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Dolomite Mining Crusher in Mexico
- Dolomite Mining Crusher in Mexico
Dolomite Mining Crusher in Mexico.Dolomite Mining Crusher in Mexico Uses of Dolomite Dolomite is used as an ornamental stone, a concrete aggregate, a source of magnesium oxide and in the Pidgeon process for the production of magnesium. It is an important petroleum reservoir rock, and...
- Feldspar Mining Crusher in Ameria
Feldspar Mining Crusher in Ameria.Feldspar Mining Crusher in Ameria Production and uses of Feldspar About 20 million tonnes of feldspar was produced in 2010, mostly by three countries: Italy (4.7 Mt), Turkey (4.5 Mt), and China (2 Mt). Feldspar is a common raw material used in glassm...
- Kaolin Mining Crusher
Kaolin Mining Crusher.Kaolin Mining Crusher Use of Kaolin Kaolin is used in ceramics, medicine, coated paper, as a food additive in toothpaste, as a light diffusing material in white incandescent light bulbs, and in cosmetics. It is generally the main component in porcela...
- Limestone Mining Crusher
Limestone Mining Crusher.Limestone Mining Crusher Uses of Limestone Limestone is very common in architecture, especially in Europe and North America. Many landmarks across the world, including the Great Pyramid and its associated complex in Giza, Egypt, are made of limestone...
- Alunite Crusher
Alunite Crusher.Alunite Crusher Crushed Alunite Application It is a good source of alum. Sometimes, it is also used to recover potassium and aluminum. Commercially it is used as alloys, tools, equipment. ALUNITE IS also known as alumstone. This mineral was first obs...
- Aragonite Crusher
Aragonite Crusher.Aragonite Crusher What is Aragonite ? Aragonite is a carbonate mineral, one of the two common, naturally occurring, crystal forms of calcium carbonate, CaCO3 (the other form being the mineral calcite). It is formed by biological and physical processe...
Aggregate Mining Process in South Africa
- Aggregate Mining Process in South Africa
Aggregate Mining Process in South Africa.The aggregate mining process need lots of aggregate mining equipment,includes jaw crusher, VSI (vertical shaft impact) crusher(sand making machine), vibrating screen, sand washing machine and belt conveyer. ...
- Barite crushing line
Barite crushing line.Barite crushing line Barite production line is the whole set of barite crushing and grinding, including feeder, barite crusher, screening equipment and grinding mill. XSM design barite production line for barite industry in the industry....
- Granite crushing line
Granite crushing line.Granite crushing line The complete granite crushing plant includes jaw crusher as primary crusher, impact crusher as secondary crusher, cone crusher as fine crusher, and belt conveyor, screening machine. Jaw crusher is the primary granite c...
- Kaolinite crushing line
Kaolinite crushing line.Kaolinite crushing line involved Kaolin clay crusher is key equipment to break the mined kaolin stone into small particles. Kaolin crusher is also called kaolinite crusher because of the name of this material. In the kaolin beneficiation pr...
- Calcite crushing line
Calcite crushing line.Calcite crushing line involved As to the calcite crushing, our company suggest you the jaw crusher, impact crusher, cone crusher and so on calcite mining equipment. And you can also use our matched grinding equipment such as the ball mill a...
- Tombarthite crushing line
Tombarthite crushing line.Tombarthite crushing line involved It is often used in conjunction with Jaw crusher - Cone Crusher Impact Crusher - Sand Making Machine - VSI Crusher - Vibrating Feeder - Vibrating Screen - Sand Washing Machine Belt Conveyor, thus forming t...
The Rapid Development of Mining Grinding Technology
- The Rapid Development of Mining Grinding Technology
Our national grinding technology has gradually achieved one stable technology according to the scientific progress and social development since our country enters into the 21 century....
- The Excellent Design on Sand Maker with Energy Saving
XSM mining machinery insists on the continuous innovation on the mining products, which has made some breakthroughs at some point, so the green concept on impact sand making industry with energy saving can be easily accepted by the most of the mining customers in a short time....
- The Working Principle of LPM series Vertical Crusher
LPM vertical crusher is suitable for crushing many types of materials such as cement clinker, limestone, sand rock, shale, gangue, coal, aluminum ore, gold ore and molybdenum ore in such industrial departments as building material, chemistry, metallurgy, power station, coal and mining....
- The Improvement of General Level of Sand Maker Needs Innovati
It is imperative to improve the general innovation level of the sand maker technology, and at the same time, when choosing sand maker brand, the sand and stone aggregate plants must pay attention to the technical power of the company....
- XSM Mill Improves Using Performance of Concrete
The superfine grinding mill produced by our company can process the industrial wastes into superfine powders and mix them into cement, thus greatly improving the performance of the concrete....
- Jaw Crusher Achieves Lasting Fame in the Mining Industry
The reason why jaw crusher achieves lasting fame in the crushing industry is that the designing principle of the professional equipment is indeed excellent....
The Comprehensive Usage of Fly Ash by XSM Mining Grinder
- The Comprehensive Usage of Fly Ash by XSM Mining Grinder
The discharging of this amount of fly ash has caused much more damage to the whole mainland environment, which can be one of the fatal elements polluting the environment....
- More and More Applying Scope of Crusher in Stone Production L
Crushing machine is mainly used in mining, metallurgy, building material, highway, railway, water conservancy and the chemical industry. The common crushing machine used by us includes jaw crusher, impact crusher, vertical shaft impact crusher, hydraulic cone crusher, hammer crusher and rod crusher....
- The Hot Popularity of Hammer Crusher in Mainland Market
Jaw crusher and hammer crusher are the key and essential machines in the sandstone production line, which is applied for the crushing rock, limestone, granite and some other mining materials....
- The Strong Support of Crushing Machine on Railway Paving
XSM mining machinery can specially design the advanced production line for the railway paving and highway building according to the new demand for the aggregate used in the construction....
- The New Developing Tendency of Modern Crushing Industry
The background of our national crushing machine has two aspects, one is the western development and the other is the basic construction....
- The Development Challenges for Mining Mechanical Industry
Our nation has begun to pay much more attention to the building of security housing and to lower the influence of carbon on environment, which asks for the higher standard on the mining products....
The effectiveness with the aac block creation line may be very high
Programs Of Stone Crushing Plant :
Reasonable approach might be designed according to those specialized datas.
Below are a few realistic stone generation line programs:
one. Vibrating feeder jaw crusher Multi-cylinder Hydraulic cone crusher reshaping device (PF crusher) vibrating display Primary figures of the plan is that it adopts state-of-the-art multi-cylinder hydraulic cone crusher. This helps make fine items to take a bigger proportion. 80% of your finals may be scaled-down in comparison to the size of discharge opening. It will of course enhance processing ability and decrease typical electricity value. Insert reshaping equipment because the secondary crusher can assure the standard and shape on the final solutions on one hand; on the other hand , some sands may be selected for other utilization.
The performance of your aac block production line is very high. Doing work life of easy-worn components is extended. Continual running time from the machines is more time, and it's easy to maintain. The general financial earnings are larger than the common plants.
two. Vibrating feeder Jaw crusher CS cone crusher Reshaping device vibrating screen This program adopts higher efficiency CS cone crusher and yes it would make good merchandise to choose a bigger proportion. It lessens secondary crushing and gets much extra last products and solutions. The reshaping equipment because the secondary crusher can guarantee the standard as well as the shape in the final items on one particular hand; however , some sands is often picked for other use.
Doing work life of easy-worn parts with the complete production line is extended. It's got the feature of uncomplicated upkeep, much less expenditure at just one time, scaled-down working expense and higher general financial profits.increase ball mill output.
three. Vibrating feeder Jaw Crusher HP single-cylinder cone crusher vibrating display
This approach is principally well suited for processing difficult materials, like granite. Because the secondary crusher is hydraulic equipment, it's the attribute of effortless routine maintenance, significantly less financial commitment at a single time, straightforward flow procedure, very easy to run. It can be extensively employed inside the marketplace which provides blended components or there is reduce requirement of form with the materials. This line gets the options of mixing with several kinds of equipments, simple servicing, and indiscrete composition. It's suitable for any scale of expense thanks to lesser flooring room requirement.
four. Vibrating feeder Jaw crusher CS cone crusher vibrating monitor
This approach is ideal for processing difficult resources, like granite. Evaluating together with the exact same scale programs, the apparent feature of this prepare is more compact expense at a person time, straightforward circulation system, effortless running and routine maintenance. The easy-worn areas applying is fewer. Its financial revenue are higher although production price tag is reduced.crusher spare pieces
five. Vibrating feeder Ring Hammer Crusher affect crusher vibrating monitor
This strategy is especially suitable for processing comfortable materials, like rock. Comparing along with the same scale strategies, the apparent element of the plan is lesser investment decision at one time, simple move process, quick functioning and routine maintenance. This 50000 aac block earning device can generate excellent last merchandise with good form stones.
Mobile crushing plant and conveying in mining & quarries - a
- Mobile crushing plant and conveying in mining & quarries - a
Nowadays cost reduction in every part of a production plant is a major key to surviving in global as well as in regional markets. Therefore, for quarries it is also necessary to review where money can be saved in order to increase profits and face ch...
- Specialising in the operations and maintenance of fixed and m
Part of ChinaMining Division, XSM Mining is a leader in the china resources industry.We operate world class mines and are the countrys largest contract miner and processor of iron ore. Were also experts in underground mining and in mining precious...
- Coal crushing equipment of coal handling plant system in the
The coal handling plant (CHP) in a thermal power station covers unloading of coal, its crushing, storage and filling of boiler bunkers. The planning and design of the CHP is site specific and depends on the following factors:Station capacity ,Coal so...
- A manufactured sand producer in Tennessee finds that using th
A manufactured sand producer in Tennessee finds that using the right jaw-crusher wear parts saves time and money in the long run. Highland Sand Co. in Crab Orchard, Tenn., produces manufactured sand at its quarry operation. The site produces only man...
Crusher Grinding Mill For Gabon Mining Minerals
Crusher Grinding Mill For Gabon Mining Minerals
The apron feeder crusher hydraulic drive into a variable frequency drive technologyThe feasibility of using a drive plate feeder crusher working characteristics: ① most no-load start, basically no overload phenomenon, occasionally with a rated load start, subject to a maximum of 70t coal hoppers; ② requirements start at zero speed, the speed range of 0 ~ 0.6 m / min, can be controlled manually slow acceleration or deceleration, speed and 0.3 ~ 0.5m/min using more stable operation; ③ stable stable operation of the external load, impact resistance is small; ④ the lower ambient temperature, dust bigger. Inverter Work characteristics: with automatic acceleration, deceleration function, you can adjust the acceleration and deceleration time, select acceleration, deceleration, as well as frequency hopping feature, you can ensure that the motor has a rated torque at low speeds; efficiency, small impact on power, the failure rate low. These features make the variable frequency drive plate feeder fully meet the needs of drivers. Semi-continuous system face tape machine (inverter drives) work characteristics and the running time and the crusher plate feeder basically the same. With these two devices of the performance indicators and maintenance cost comparison, you cSF flotation machinean better analyze replaced with inverter-driven hydraulic drive operability and economy. Two variable frequency drive plate feeder main equipment and selection of variable frequency drive plate feeder main equipment: drive 2, drive motor, 2 sets of two planetary gear sets (using the equipment has been put into use reducer). (1) gear equipment selection: Now the planetary gear system requirements Rated input power 130kW, input speed 1500r/min, consider the equipment to run most of the time in 0.3 ~ 0.5m/min below the maximum speed work, and the AC Average speed 1488r/min Motor inverter can not exceed 5% overshoot meet 1500r/min work requirements, so you can keep using the planetary gear. (2) Motor Equipment Selection: from the apron feeder rated drive power selection formula indicates: traction FZ = F1 + F2 + F3 + F4 + F5 = 18065 +1806.5 +243 +154227 +140810 = 315151.5 (N) Apron feeder rated drive power: P rated = 1.3FZv/1000η = 1.3 × 315151.5 × 0.6/1000 × 0.8 = 307 (kW) by the overloaded motor selection another empirical formula: P overloaded = (1.1 ~ 1.6) P rated Apron feeder driving power P drive = P overloaded = (1.1 ~ 1.6) P rated Considering crusher apron feeder motor drive using two sets required to keep a certain overload, overload starts more often in winter but also in the hopper After freezing sticky load of coal started, so take coefficient 1.6, then the total drive power P drive = 491.2kW, system uses two motors coaxial drive, select each motor power 250kW. motor main parameters are as follows: Power 250kW, the number of revolutions 1500 r / min, voltage 400V, frequency 50Hz. semi-continuous system using Siemens 1PQ series variable frequency drive motor, the above parameters selectable motor Model: 1PQ8315-4BP, power 250kW, revolution 1500r/min, voltage 400V, rated current 430A, Power factor 0.87, IP55. (3) drive selection. Drive selection process is the best match of the inverter and the motor process, generally drive capacity should be greater than or equal to the motor capacity. Industrial production in the motor capacity is too large, so the selection of the motor load power inverter is working to meet the needs. For continuous work capacity of the inverter rated motor current method can be selected: the above calculation, the inverter capacity should be at 313.5 ~ 328.5kW. Consider the design of the motor up and running by overloading selected, the safety factor is large, the inverter rated Current general admission motor rated current 1.1 to 1.5 times, the drive current is 473 ~ 645A, determined by the drive inverter model selection Manual ACS800-07-0400-3. main parameters are as follows: Operating voltage 400V, current 693 A capacity 315kW. semi-continuous system B, it transferred the same drive motor inverter, the device can be inte235tph Cement Ball Mill for Sale in Italyrchanged. 3 hydraulic drive equipment costs into variable frequency drive dissect the hydraulic drive can be used with variable frequency drive planetary gear unit has been put into use, the following comparison is not considered in the analysis of planetary gear. Spare parts and renovation cost comparison: To ensure reliable operation of the hydraulic system, timely maintenance, the need to purchase the appropriate spare parts: drive motor 2 700,000 yuan, spur gear 2 240,000 yuan, 1.28 million yuan four hydraulic pumps, hydraulic motors 2 sets of 700,000 yuan and 300,000 yuan 1 set of hydraulic accessories, the total cost of 3.22 million yuan (excluding cost of spare parts planetary gear). Transformation inverter with variable frequency drive interchangeability of parts just put an electric motor 350,000. TransforCrusher Grinding Mill For Gabon Mining Mineralsmation frequency transformation initial investment capital: 250kW motor variable frequency drive 2 700,000 yuan, ABB inverter 2 sets 50 million, an electrical room and Annex 1 sets 450,000 yuan, steel transformation equipment a coupling sleeve 30 million and is two sets of 200,000 yuan, the total cost of 2.15 million yuan. Simply hydraulic spares cost 3.22 million yuan into the transformation frequency to meet the cost of renovation and spare parts. 4 hydraulic drive with inverter-driven operation and maintenance of both comparative analysis 2008-2009, Yimin pit semi-continuous system better play to the rated efficiency. Inverter-driven face tape machine with hydraulic drive plate feeder work of a similar nature, the same running time. Through both operation and maintenance of the indicators contrast analysis, you can better reflect the hydraulic drive and the advantages and disadvantages between inverter-driven economic situation. (A) failure rate and maintenance cost comparison. Failure statistics for 2008-2009 can be seen, variable frequency drive hydraulic drive failure rates than the failure rate is much less, if the plate feeder variable frequency drive hydraulic drive into the annual increase equipment uptime 112h, produce more coal 22.4 million t, reduced maintenance costs 91,000 yuan. (2) routine maintenance cost comparison. Apron feeder hydraulic drive hydraulic oil should be replaced every year, the total material cost 156,000 yuan, the total cost of replacing all the filters 20,000. Original replacement hydraulic handling hydraulic failure often occurs hydraulic oil leaks, the need for timely up the oil, the total cost of 40,000 yuan. Face inverter only requires regular dusting, maintenance can be, almost no maintenance costs. Annual savings of maintenance costs 216,000 yuan. 5 hydraulic drive with inverter drive both comprehensive economic analysis we can see from the above comparative analysis, the apron feeder into a variable frequency drive hydraulic drive is technically feasible, transformation costs 2.15 million yuan. By contrast economic analysis in Table 5 shows that: After transformation, the annual savings of routine maintenance costs 286,000 yuan, 242,000 yuan savings breakdown maintenance costs, hydraulic drive device statistics total 528,000 yuan, is expected to save costs by only 40 months to recover the transformation costs. After transformation equipment failure rate is much lower, reduce equipment downtime, increase the annual output of 114,000 t, increase the output value 1140 yuan. 6 Conclusions By Yimin pit semi-continuous system hydraulic drive plate feeder with variable frequency drive face analysis of comparison, that the apron feeder into a variable frequency drive hydraulic drive is technically feasible, with practical operational , will bring high economic benefits for the enterprise, you can better play semi-continuous system productivity. Using only the cost of spare parts can be achieved hydraulic plate feeder drive the transformation of work, annual savings of routine maintenance costs 286,000 yuan, 242,000 yuan breakdown maintenance costs; increase the working time 169h, increase coal production 338 000 t, increase output 3300 million. By Yimin pit apron feeder drive the analysis, for a similar transformation of equipment provided technical reference.
Crusher Grinding Mill For Gabon Mining Minerals
Crusher Grinding Mill For Gabon Mining Minerals
The apron feeder crusher hydraulic drive into a variable frequency drive technologyThe feasibility of using a drive plate feeder crusher working characteristics: ① most no-load start, basically no overload phenomenon, occasionally with a rated load start, subject to a maximum of 70t coal hoppers; ② requirements start at zero speed, the speed range of 0 ~ 0.6 m / min, can be controlled manually slow acceleration or deceleration, speed and 0.3 ~ 0.5m/min using more stable operation; ③ stable stable operation of the external load, impact resistance is small; ④ the lower ambient temperature, dust bigger. Inverter Work characteristics: with automatic acceleration, deceleration function, you can adjust the acceleration and deceleration time, select acceleration, deceleration, as well as frequency hopping feature, you can ensure that the motor has a rated torque at low speeds; efficiency, small impact on power, the failure rate low. These features make the variable frequency drive plate feeder fully meet the needs of drivers. Semi-continuous system face tape machine (inverter drives) work characteristics and the running time and the crusher plate feeder basically the same. With these two devices of the performance indicators and maintenance cost comparison, you cSF flotation machinean better analyze replaced with inverter-driven hydraulic drive operability and economy. Two variable frequency drive plate feeder main equipment and selection of variable frequency drive plate feeder main equipment: drive 2, drive motor, 2 sets of two planetary gear sets (using the equipment has been put into use reducer). (1) gear equipment selection: Now the planetary gear system requirements Rated input power 130kW, input speed 1500r/min, consider the equipment to run most of the time in 0.3 ~ 0.5m/min below the maximum speed work, and the AC Average speed 1488r/min Motor inverter can not exceed 5% overshoot meet 1500r/min work requirements, so you can keep using the planetary gear. (2) Motor Equipment Selection: from the apron feeder rated drive power selection formula indicates: traction FZ = F1 + F2 + F3 + F4 + F5 = 18065 +1806.5 +243 +154227 +140810 = 315151.5 (N) Apron feeder rated drive power: P rated = 1.3FZv/1000η = 1.3 × 315151.5 × 0.6/1000 × 0.8 = 307 (kW) by the overloaded motor selection another empirical formula: P overloaded = (1.1 ~ 1.6) P rated Apron feeder driving power P drive = P overloaded = (1.1 ~ 1.6) P rated Considering crusher apron feeder motor drive using two sets required to keep a certain overload, overload starts more often in winter but also in the hopper After freezing sticky load of coal started, so take coefficient 1.6, then the total drive power P drive = 491.2kW, system uses two motors coaxial drive, select each motor power 250kW. motor main parameters are as follows: Power 250kW, the number of revolutions 1500 r / min, voltage 400V, frequency 50Hz. semi-continuous system using Siemens 1PQ series variable frequency drive motor, the above parameters selectable motor Model: 1PQ8315-4BP, power 250kW, revolution 1500r/min, voltage 400V, rated current 430A, Power factor 0.87, IP55. (3) drive selection. Drive selection process is the best match of the inverter and the motor process, generally drive capacity should be greater than or equal to the motor capacity. Industrial production in the motor capacity is too large, so the selection of the motor load power inverter is working to meet the needs. For continuous work capacity of the inverter rated motor current method can be selected: the above calculation, the inverter capacity should be at 313.5 ~ 328.5kW. Consider the design of the motor up and running by overloading selected, the safety factor is large, the inverter rated Current general admission motor rated current 1.1 to 1.5 times, the drive current is 473 ~ 645A, determined by the drive inverter model selection Manual ACS800-07-0400-3. main parameters are as follows: Operating voltage 400V, current 693 A capacity 315kW. semi-continuous system B, it transferred the same drive motor inverter, the device can be inte235tph Cement Ball Mill for Sale in Italyrchanged. 3 hydraulic drive equipment costs into variable frequency drive dissect the hydraulic drive can be used with variable frequency drive planetary gear unit has been put into use, the following comparison is not considered in the analysis of planetary gear. Spare parts and renovation cost comparison: To ensure reliable operation of the hydraulic system, timely maintenance, the need to purchase the appropriate spare parts: drive motor 2 700,000 yuan, spur gear 2 240,000 yuan, 1.28 million yuan four hydraulic pumps, hydraulic motors 2 sets of 700,000 yuan and 300,000 yuan 1 set of hydraulic accessories, the total cost of 3.22 million yuan (excluding cost of spare parts planetary gear). Transformation inverter with variable frequency drive interchangeability of parts just put an electric motor 350,000. TransforCrusher Grinding Mill For Gabon Mining Mineralsmation frequency transformation initial investment capital: 250kW motor variable frequency drive 2 700,000 yuan, ABB inverter 2 sets 50 million, an electrical room and Annex 1 sets 450,000 yuan, steel transformation equipment a coupling sleeve 30 million and is two sets of 200,000 yuan, the total cost of 2.15 million yuan. Simply hydraulic spares cost 3.22 million yuan into the transformation frequency to meet the cost of renovation and spare parts. 4 hydraulic drive with inverter-driven operation and maintenance of both comparative analysis 2008-2009, Yimin pit semi-continuous system better play to the rated efficiency. Inverter-driven face tape machine with hydraulic drive plate feeder work of a similar nature, the same running time. Through both operation and maintenance of the indicators contrast analysis, you can better reflect the hydraulic drive and the advantages and disadvantages between inverter-driven economic situation. (A) failure rate and maintenance cost comparison. Failure statistics for 2008-2009 can be seen, variable frequency drive hydraulic drive failure rates than the failure rate is much less, if the plate feeder variable frequency drive hydraulic drive into the annual increase equipment uptime 112h, produce more coal 22.4 million t, reduced maintenance costs 91,000 yuan. (2) routine maintenance cost comparison. Apron feeder hydraulic drive hydraulic oil should be replaced every year, the total material cost 156,000 yuan, the total cost of replacing all the filters 20,000. Original replacement hydraulic handling hydraulic failure often occurs hydraulic oil leaks, the need for timely up the oil, the total cost of 40,000 yuan. Face inverter only requires regular dusting, maintenance can be, almost no maintenance costs. Annual savings of maintenance costs 216,000 yuan. 5 hydraulic drive with inverter drive both comprehensive economic analysis we can see from the above comparative analysis, the apron feeder into a variable frequency drive hydraulic drive is technically feasible, transformation costs 2.15 million yuan. By contrast economic analysis in Table 5 shows that: After transformation, the annual savings of routine maintenance costs 286,000 yuan, 242,000 yuan savings breakdown maintenance costs, hydraulic drive device statistics total 528,000 yuan, is expected to save costs by only 40 months to recover the transformation costs. After transformation equipment failure rate is much lower, reduce equipment downtime, increase the annual output of 114,000 t, increase the output value 1140 yuan. 6 Conclusions By Yimin pit semi-continuous system hydraulic drive plate feeder with variable frequency drive face analysis of comparison, that the apron feeder into a variable frequency drive hydraulic drive is technically feasible, with practical operational , will bring high economic benefits for the enterprise, you can better play semi-continuous system productivity. Using only the cost of spare parts can be achieved hydraulic plate feeder drive the transformation of work, annual savings of routine maintenance costs 286,000 yuan, 242,000 yuan breakdown maintenance costs; increase the working time 169h, increase coal production 338 000 t, increase output 3300 million. By Yimin pit apron feeder drive the analysis, for a similar transformation of equipment provided technical reference.
Crusher Grinding Mill For Gabon Mining Minerals
Crusher Grinding Mill For Gabon Mining Minerals
The apron feeder crusher hydraulic drive into a variable frequency drive technologyThe feasibility of using a drive plate feeder crusher working characteristics: ① most no-load start, basically no overload phenomenon, occasionally with a rated load start, subject to a maximum of 70t coal hoppers; ② requirements start at zero speed, the speed range of 0 ~ 0.6 m / min, can be controlled manually slow acceleration or deceleration, speed and 0.3 ~ 0.5m/min using more stable operation; ③ stable stable operation of the external load, impact resistance is small; ④ the lower ambient temperature, dust bigger. Inverter Work characteristics: with automatic acceleration, deceleration function, you can adjust the acceleration and deceleration time, select acceleration, deceleration, as well as frequency hopping feature, you can ensure that the motor has a rated torque at low speeds; efficiency, small impact on power, the failure rate low. These features make the variable frequency drive plate feeder fully meet the needs of drivers. Semi-continuous system face tape machine (inverter drives) work characteristics and the running time and the crusher plate feeder basically the same. With these two devices of the performance indicators and maintenance cost comparison, you cSF flotation machinean better analyze replaced with inverter-driven hydraulic drive operability and economy. Two variable frequency drive plate feeder main equipment and selection of variable frequency drive plate feeder main equipment: drive 2, drive motor, 2 sets of two planetary gear sets (using the equipment has been put into use reducer). (1) gear equipment selection: Now the planetary gear system requirements Rated input power 130kW, input speed 1500r/min, consider the equipment to run most of the time in 0.3 ~ 0.5m/min below the maximum speed work, and the AC Average speed 1488r/min Motor inverter can not exceed 5% overshoot meet 1500r/min work requirements, so you can keep using the planetary gear. (2) Motor Equipment Selection: from the apron feeder rated drive power selection formula indicates: traction FZ = F1 + F2 + F3 + F4 + F5 = 18065 +1806.5 +243 +154227 +140810 = 315151.5 (N) Apron feeder rated drive power: P rated = 1.3FZv/1000η = 1.3 × 315151.5 × 0.6/1000 × 0.8 = 307 (kW) by the overloaded motor selection another empirical formula: P overloaded = (1.1 ~ 1.6) P rated Apron feeder driving power P drive = P overloaded = (1.1 ~ 1.6) P rated Considering crusher apron feeder motor drive using two sets required to keep a certain overload, overload starts more often in winter but also in the hopper After freezing sticky load of coal started, so take coefficient 1.6, then the total drive power P drive = 491.2kW, system uses two motors coaxial drive, select each motor power 250kW. motor main parameters are as follows: Power 250kW, the number of revolutions 1500 r / min, voltage 400V, frequency 50Hz. semi-continuous system using Siemens 1PQ series variable frequency drive motor, the above parameters selectable motor Model: 1PQ8315-4BP, power 250kW, revolution 1500r/min, voltage 400V, rated current 430A, Power factor 0.87, IP55. (3) drive selection. Drive selection process is the best match of the inverter and the motor process, generally drive capacity should be greater than or equal to the motor capacity. Industrial production in the motor capacity is too large, so the selection of the motor load power inverter is working to meet the needs. For continuous work capacity of the inverter rated motor current method can be selected: the above calculation, the inverter capacity should be at 313.5 ~ 328.5kW. Consider the design of the motor up and running by overloading selected, the safety factor is large, the inverter rated Current general admission motor rated current 1.1 to 1.5 times, the drive current is 473 ~ 645A, determined by the drive inverter model selection Manual ACS800-07-0400-3. main parameters are as follows: Operating voltage 400V, current 693 A capacity 315kW. semi-continuous system B, it transferred the same drive motor inverter, the device can be inte235tph Cement Ball Mill for Sale in Italyrchanged. 3 hydraulic drive equipment costs into variable frequency drive dissect the hydraulic drive can be used with variable frequency drive planetary gear unit has been put into use, the following comparison is not considered in the analysis of planetary gear. Spare parts and renovation cost comparison: To ensure reliable operation of the hydraulic system, timely maintenance, the need to purchase the appropriate spare parts: drive motor 2 700,000 yuan, spur gear 2 240,000 yuan, 1.28 million yuan four hydraulic pumps, hydraulic motors 2 sets of 700,000 yuan and 300,000 yuan 1 set of hydraulic accessories, the total cost of 3.22 million yuan (excluding cost of spare parts planetary gear). Transformation inverter with variable frequency drive interchangeability of parts just put an electric motor 350,000. TransforCrusher Grinding Mill For Gabon Mining Mineralsmation frequency transformation initial investment capital: 250kW motor variable frequency drive 2 700,000 yuan, ABB inverter 2 sets 50 million, an electrical room and Annex 1 sets 450,000 yuan, steel transformation equipment a coupling sleeve 30 million and is two sets of 200,000 yuan, the total cost of 2.15 million yuan. Simply hydraulic spares cost 3.22 million yuan into the transformation frequency to meet the cost of renovation and spare parts. 4 hydraulic drive with inverter-driven operation and maintenance of both comparative analysis 2008-2009, Yimin pit semi-continuous system better play to the rated efficiency. Inverter-driven face tape machine with hydraulic drive plate feeder work of a similar nature, the same running time. Through both operation and maintenance of the indicators contrast analysis, you can better reflect the hydraulic drive and the advantages and disadvantages between inverter-driven economic situation. (A) failure rate and maintenance cost comparison. Failure statistics for 2008-2009 can be seen, variable frequency drive hydraulic drive failure rates than the failure rate is much less, if the plate feeder variable frequency drive hydraulic drive into the annual increase equipment uptime 112h, produce more coal 22.4 million t, reduced maintenance costs 91,000 yuan. (2) routine maintenance cost comparison. Apron feeder hydraulic drive hydraulic oil should be replaced every year, the total material cost 156,000 yuan, the total cost of replacing all the filters 20,000. Original replacement hydraulic handling hydraulic failure often occurs hydraulic oil leaks, the need for timely up the oil, the total cost of 40,000 yuan. Face inverter only requires regular dusting, maintenance can be, almost no maintenance costs. Annual savings of maintenance costs 216,000 yuan. 5 hydraulic drive with inverter drive both comprehensive economic analysis we can see from the above comparative analysis, the apron feeder into a variable frequency drive hydraulic drive is technically feasible, transformation costs 2.15 million yuan. By contrast economic analysis in Table 5 shows that: After transformation, the annual savings of routine maintenance costs 286,000 yuan, 242,000 yuan savings breakdown maintenance costs, hydraulic drive device statistics total 528,000 yuan, is expected to save costs by only 40 months to recover the transformation costs. After transformation equipment failure rate is much lower, reduce equipment downtime, increase the annual output of 114,000 t, increase the output value 1140 yuan. 6 Conclusions By Yimin pit semi-continuous system hydraulic drive plate feeder with variable frequency drive face analysis of comparison, that the apron feeder into a variable frequency drive hydraulic drive is technically feasible, with practical operational , will bring high economic benefits for the enterprise, you can better play semi-continuous system productivity. Using only the cost of spare parts can be achieved hydraulic plate feeder drive the transformation of work, annual savings of routine maintenance costs 286,000 yuan, 242,000 yuan breakdown maintenance costs; increase the working time 169h, increase coal production 338 000 t, increase output 3300 million. By Yimin pit apron feeder drive the analysis, for a similar transformation of equipment provided technical reference.
Washing Plant for Gold Mining
Washing Plant for Gold Mining
Wear raw materials for the cement industry trends and application
11 balls, lining a common carbon steel segment and the rolling ball, white is the traditional cast-iron ball and lining wear-resistant materials are now being phased out. But still using white iron liners, mainly used for the production of corrugated liner mill two positions, as well as with the mill facilities, in order to reduce overall costs. 12 medium and high carbon steel balls with the segment in the early 1980s, for ordinary carbon steel balls, paragraph do not wear, low hardness, deformation and other issues, domestic development of medium and high carbon forged steel ball, segments, such as 45Mn2, 50Mn2 , 65Mn and so on, there are new developments in recent years, the use of waste heat quenching, the hardness increase, energy conservation, and improve the wear resistance, but without losing a round, worn to a small diameter also remained rounded. According to this type of technology, such as conditional factory Anshan, Baotou Steel, Panzhihua Iron and Steel, etc., then the direct use of homegrown rail heavy rail, light rail material rolling balls and paragraphs (capsules ball), the effect is very good. Such rolling ball, paragraph hardness greater than HRC55, impact toughness greater than 9J / CM 2, abrasion and low chrome cast iron is not much, but better toughness, no crushing, process tolerance, good quality and stability. Medium and high carbon steel balls with the segment mainly used for sorting and mining, in the mid-1980s was extensive use of the cement industry, and is suitable for wet, dry process. But in the cement consumption greatly reduced, and was replaced by low-chrome cast ball. Low chrome cast ball better wear resistance. From the appearance of heavy rail segment can be divided into two types, one is a capsule-shaped, ie capsules ball, suitable for processing operations; Another is eager or prestressed cold cutting steel bars, heat hardening treatment after forging, more suitable for cement grinding operations. Medium and high carbon steel balls and paragraphs many manufacturers, especially in the former Soviet Union, a large number of rail entering the country, which is used to produce a large number of balls, segments. 13 low chrome cast ball, low chrome cast segments to produce materials without liner. Low chrome cast ball, casting segment due to the production process is relatively simple, process tolerance is good, so now manufacturers who very much. Large companies such as building materials industry Ningguo, Maanshan, Tongling. Current low chrome cast ball, cast as a multi-stage multBall mill rubber lineri-alloyed main alloying elements chromium, molybdenum, copper, vanadium, titanium, etc., can effectively improve the overall performance of materials; 6 hours using 650 ℃ annealing processes, reduce costs, improved wear resistance. Low chrome cast ball, cast a very wide application segment in recent years, its price, performance, one-time investment is more suitable for Chinas national conditions, are very popular, accounting for most of the domestic market. However, due to the market downturn in recent years, molybdenum, copper prices, some of the factory, including some large ball mill to take jerry approach without adding expensive alloying elements, only in the material by adding 1% of chromium, a significant reduction in price in order to attract customers and make balls quality greatly affected, out of round seriously, seriously affecting the grinding efficiency. 14 high chrome material for the production of high chrome ball material can also be used to produce the backing. High chromium cast ball chromium content of 12% D 36%, the current of the high chromium cast ball substantially chromium content of 12% D 15%, a small amount of chromium content of 20% of the ball, a chromium-containing 24% D 26 % of the ball. High chrome cast ball is characterized by excellent wear resistance, the current foreign industrial countries, the cement industry with the ball, high chrome cast ball dominant, overall economic efficiency is very good. Domestic application of high chromium cast ball is now more extensive, occupy a large market share, but a one-time investment is large, limited to the specific situation of Chinas current economy, the application subject to certain restrictions. Current domestic production of high chromium cast ball called chromium content of Cr12% D 15%, for the multi-alloy materials, including vanadium, titanium, molybdenum, copper, niobium. Representative manufacturers such as Jilin meihekou, Hebei Kaiyuan, Chengde, Hebei, Shandong Linyi, Beijing water machine, etc., have been able to stably produce high chrome cast ball, wear no more than 60g / T Cement. In particular, Linyi, Shandong, using vacuum solid casting, product quality up to international advanced level; Beijing Water production Φ15, Φ17, Φ25 small-diameter high-chrome cast ball, also reached the international advanced level of similar products. Production cold windy fog, quenched and tempered or annealed cast. Matrix of martensite or troostite. Such materials are characterized by high chromium corrosion resistant to, production of raw materials can not be used in wet grinding. Also be used to produce the backing. Containing Cr20% above the high chromium material is currently not used for the cement industry, mainly for the power sector. Cr20% of which materials are used roller, grinding ring, developed by the North China Institute of Electric Power; made of a material containing Cr25% ball from Beijing Cement Machinery Plant developed and produced, wear and corrosion performance is very good, overall economic efficiency is good However, the high price of such materials. Class 15 ductile iron wear-resistant material 151 class traditional wear resistant materials are ductile iron ductile iron manganese, used in China longer, wider application in the cement industry. However, ductile iron manganese matrix organization residual austenite content is high, the process of using fatigue spalling. Is now being phased out, replaced the martensite and bainite ductile iron. 1512 martensite ductile iron building materials industry in Shandong Longkou Special wear-resistant materials Plant and Beijing-based organization of production ironworks martensite typiWashing Plant for Gold Miningcal ductile material, its relevant properties are as follows: Microstructure: Fine needle martensite + ferrite + small amount of crushed carbide; graphite morphology: Ball of level two, the size of five; ball drop ball Views:> 25000 (Agricultural Machinery Institute MQ type drop ball machine) Chemical composition and mechanical properties Table 3. Martensite ductile iron chemical composition and mechanical properties proved martensite ductile iron ball is a good grinding body, not only can and martensitic ductile iron liner with pay, more suitable for high manganese and high chromium with iron and other payment liner and liner can effectively prolong the service life. 1513 Bainite Ductile iron is isothermal bainite ductile iron one (such as ductile iron is austenitic bainite ductile iron and cast iron in general, the foreign system called Austempered DuctileIron, referred to ADI , its performance over a wide range and adjustable), this material and wear characteristics similar to ductile iron martensite, but better toughness. Typical martensite / bainite ductile iron complex phase of the chemical composition shown in Table 4 Table 4 martensite / bainite ductile iron complex phase chemical composition table martensite / bainite ductile iron complex phase of comprehensive performance little difference with the martensite ductile iron, hardness is slightly lower, good toughness. Cupola production, continuous quenching process. 16 in alloy liner in alloy liner is referred to, is a wrong call, called carbon low-alloy steel liner, is the rise in recent years of new material, very many species, such as the stars in the sky, but the main alloying elements Cr, Mn, Si. If 35Cr2MnSiMoR, 75Cr2MnSiMoB TiR, 65Cr2MnSiNiMo, 40Cr4MnMoVBR, 50CrMnSiMo TiR and 40CrMnSi etc., the matrix of martensite or martensite / bainite composite phase, heat treatment process for the quenching and tempering. The alloy is a good liner material, the better the alloy currently used in the cement mill liner up to three to five years, much better than the traditional high manganese steel liner, cement, especially now most is a large cement plant have been used in the alloy liner. 17 high-manganese steel liner has been used for nearly a century, is still in use, but still widely used in China at present. Steel No. ZGMn13, the national standard is GB5680D 85. High manganese steel wear resistance is achieved through the shock hardening, but on the characteristics of the cement industry, mining, it is difficult to make high-manganese steel liner fully hardening, especially small and medium mill, which has a large number of facts show and is currently in the academic session of this feature for high-manganese steel has also been reached. From a development perspective, as a kind of high-manganese steel liner material is not ideal, will eventually be eliminated. In recent years, high manganese steel developed on the basis of an ultra-high manganese steel and manganese steel, manganese content of 18%, respectively, and 6%, through a special manufacturing process used to make linings, have a certain effect, but it is not very satisfactory. 18 bainitic steel MnD B series bainitic steel by Tsinghua University Professor Fang Hongsheng and Professor Zheng Yankang successfully developed, which is to produce steel billets, and then forging, rolling into a ball, air cooling can be. In addition for the manufacture of balls, but also for the production of wear parts such as crankshafts, widely used. Since bainite bainitic steels actual content of only 20D 30%, so the bainitic steel great debate in the academic title, later renamed Hung Kang Beishi body of steel. Forged or bainitic steel ball is rolling, abrasion resistance and low chrome cast ball almost, but without lCement Plant Open And Close Circuitosing a round, corrosion-resistant. More bainitic steel ball used in mines and less for the cement industry. Manufacturers such as Hebei Xinji, Panjin Hengtai Tangshan, Hebei and so on. 19 Composite Materials Composite Materials in recent years more research is wear-resistant materials is an important research direction. Mainly to the high hardness materials and composite materials with high toughness to maximize the advantages of both. More mature, such as high chromium cast iron and steel complex for the production of liners, crusher jaw plates. Studies with manufacturers such as Guangzhou colored homes, Linyi, Shandong, Jiangsu and 6108 factory. This material advantages more, the price is higher. 21 kinds of balls, lining material performance comparison table can also be used to produce low-alloy steel hammer, but the smelting process is complex and demanding, only a few manufacturers are able to produce, wear-resistant materials such as LMG center, weight and other North . LMG production of the hammer of the material is ZG35CrMn2SiBRe, HRC45, Ak120J / cm 2. There is also a high manganese materials, on behalf of manufacturers Tang machine, manganese 18%, with favorable results for Jidong MB70 / 90 single-stage hammer broke, each pay 1.8 million tons of limestone can be broken hammer. If PC6040 small hammer crusher hammer, some manufacturers try to make use of martensite ductile iron, but the effect is not ideal. Composite high chromium cast iron hammer is better. 312 board hammer material is high manganese and chromium mainstream high manganese steel. 2PF1250 payment can hammer a broken limestone 7D 11 tons of mining conditions are right, crushing capacity of up to 200,000 tons. Other materials are now developed, such as low alloy steel manufacturers, too. Another double horse crusher supporting multiple high chromium cast iron plate hammer, but also very representative. 41 standards and grades of these resistant materials research and development of fast, but also very complicated, from the alloy structure, the only have dozens of high chromium cast iron, heat treatment process also varies; many varieties of steel, difficult to unity, grades are not good statistics. According to the current cement industry research and production of wear-resistant material application, the standard is clearly behind. The current standard is high manganese 1985 (GB5680D 85), without the high manganese and manganese in the description. Chromium alloy casting ball standard building materials industry standard (JC / T533D 94), 1994 was implemented, for the classification of chrome alloy casting ball just simply divided into high and low chromium chromium, no further classification. In fact, there are only a variety of high-chrome cast ball, chromium content from 12% D 36% range, performance is also different. Such as the North Water Machine Cr25 cast ball no standard to follow. Metallurgical industry standard chrome alloy casting ball proceed to develop only in 1995, the Department of the reference building materials industry and power industry standards, not too new. The martensite ductile iron is neither standard, grade mark nor clear, because we can not use low-alloy cast iron grades to sign a general manner. 51 Conclusion (1) After ten years of development, Chinas wear-resistant materials research and development has entered a period of relative stability, wear-resistant materials, the overall consumption by 800 ~ 1000g / T Cement reduced to the current national average of 500g / T Cement or so, some of the products have reached the international advanced level, is a big step forward. However, compared with developed countries, the overall level (
