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(A) The checking before the starting-up of the concentrator
1.Making sure the overload signal device is in the normal position;
2.The parts need lubricants have efficient lubricant;
3.Ensuring that the screws and the keys are tightened and the security guards are secure and reliable.
4. Checking to find out whether the debris has fallen in the bottom of the high efficiency concentrator or not and whether the discharge opening is blocked or not;
5. Linkage is intact and the valve is flexible;
6. Rake stand is not buried by the ores and the lifting device is flexible.
7. making sure that the electrical parts are sensitive and reliable.
(B) The operation sequence and matters needing attention.
1. If there were problems, the first step is to solve the problem timely.
2. After making sure that there is nothing wrong, the operator can start the machine, the sequence is as following:
(1) After the contact with the upper and lower positions, pressing the motor start button and observing the position of the overload signal device.
(2) After the normal start, falling the rake slowly on the specified location.
3. The start is not allowed when the rake is buried on the ores.
4. After the start, hand touch on the rotating part and move freely guards is not allowed.
5. That wet hands to manipulate electrical facilities is strictly prohibited.
(C) The operation of stopping the machine and the matters need attention
1. The operation sequence is as follows:
(1) Stopping the feeding.
(2) Continuing to discharge the ores until the concentration of the concentrated product is less than 25% and then stopping the concentrator.
(3) Lifting the rake stand.
2. If there is a need to stop the machine because of the accident, lifting the rake stand quickly.
3. Generally, it is not allowed to stop the machine when the high efficiency concentrator is in operation.
flotation cells : http://www.ore-mills.com/flotation-cell.html
Generally, the flotation concentrator and magnetic separator (dry magnetic separator and wet magnetic separator) are suitable for the rougher flotation, cleaning and scavenging.
After the initial sorting, the ores will go through the following procedures such as flotation, re-election or magnetic separation, which will sort part of the gangue or the surrounding rock with water content out, obtaining the products whose ore grade is higher than that of the raw materials. This is called coarse concentrates, which generally cannot reach the quality requirements of concentrate. This process is called roughing service industry.
The procedure that reselecting the rough concentrate to get qualified concentrates is called selection operation. Sometimes, the rough concentrate needs several times of selection to produce the qualified concentrate. The operations in turn are called primary selection, secondary selection….
The general rougher tailings should not be treated as the final tailings to be wasted, which often need the next processing, this job is called scavenging. In order to improve the recovery rate of the metal and sometimes only after repeated scavenging, the final tailings can be obtained.
After the sorting processing, most of the gangue and impurities are removed of the ores and the useful minerals are enriched, which is called concentrate. Concentrate is the final product of the dressing plant, and sometimes it is also called the final concentrate, which is generally used as the raw materials of smelting. The final concentrate whose main component and impurities have reached the national standard can be called qualified concentrate.
After each flotation, the products that are apart from the concentrate and tailings are called middling.
After sorting processing, the main ingredient of the ores has been enriched in the concentrate and some minor components of the ore or other associated metals have been recovered through comprehensive treatment. Therefore, the content of the useful ingredients in the remaining part of the product is very low; this part of the product is called tailings, or the final tailings. Generally tailings dumps are saved in the tailings pond.
The intermediates obtained in the sorting process are known as the middling. The content of the useful ingredients in the middling generally range between that of the concentrate and tailings. In the process of sorting, the middling generally needs returning to the proper place of operations to be processed or being conducted separate processing.
Mixing barrel is used for the ore pulp stirring before the flotation operation to make the ore pulp fully mix with the medicament, creating the conditions for the mineral processing operations.
Mineral mixing barrel is usually used for the stir of slurry in the mining industry, the mechanical stir of the various chemical industries and the stir of burdening of raw material in chemical operations. It is particularly suitable for the mixing stir of the powdered, granular and small piece of materials that have small controllable degree, such as coal, cement, stone, sand, clay, ore and etc.
The maintenance of the mixing barrel is an extremely important regular work, it should be in close coordination with its operation and overhaul.
1. Just like many other mining machinery (sand washer, vibrating feeder) the bearing plays a crucial role in the equipment. The bearing shoulders the entire load of the machine, so the good lubrication of the bearing has great impact on the service life, which directly affects the service life of the machine and the operating rate. Therefore, the lubricants injected must be clean with good sealing. The main oiling parts of the mixing machine include rolling bearings, all gears, live bearing and sliding surface.
2. The newly installed tires are prone to loosen and they must be checked frequently.
3. Paying attention to each part of the machine to ensure that they are working properly.
4. Paying attention to the degree of wear of the wear parts and timely replaces the worn parts.
5. The chassis plane which is used to place the movable equipment should be kept clear so that the live bearing can move on the base when the machine encounters the difficult-broken materials to avoid a serious accident.
6. If the oil temperature of the bearing rises, the operator should immediately stop to find out the reason to eliminate them.
7. When the gear is in operation, if it has impact sound, the operator should immediately stop to check and eliminate.
The majority of our mining resources are in the lower grade. Before being put into the use for the next industrial activities, they should be processed of the dressing plant. However, in the production process of the dressing plant, it has caused a lot of environmental problems, such as toxic agents in the air, dust pollution, the waste and pollution of water resources. In order to make the processing of mineral resources more environmental friendly, we can start from the following aspects:
Firstly, in order to save energy, the enterprises should select the ore beneficiation that is featured with high efficiency and energy saving. The efficient and energy-saving ore beneficiation will help to save a lot of running costs and make the overall cost of the processing plant under control, though the initial investment capital is relatively large. What is more, the energy-saving effect of energy-saving ore beneficiation generally can reach 60%.
Secondly, the running of the dressing plant takes a lot of water resources. To realize environmental protection must save water resources; and on the other hand, the dressing plant needs to reduce the discharge of sewage to reduce the impact on the surrounding environment. Dry emission of the tailings has been a kind of ways of tailings disposal in recent years as well as the direction of future tailings disposal, which can obtain nearly 90% of the backwater through the tailings dewatering. If this part of the backwater is applied to the beneficiation production operation once again, the water resources will be saved. At the same time, the backwater utilization also reduces the discharge of sewage. In this way, both the cost of water and the cost of wastewater treatment are reduced accordingly.
Thirdly, with regard to the restoring of green land and farmland, the dry emission of the tailings also allows enterprises to obtain additional economic benefits. The dry emission of the tailings can reduce chunk of floor space. And the dry tailings can be used for the filling of mined-out area, which not only eliminates the risk of the tailings dam break in environmental protection, but also saves the costs of purchasing tailings land, construction costs and maintenance costs.
Henan Hongxing Ming Machinery Co., Ltd. is one of the important mining machinery manufacturing bases domestically. Later, after continuous development, it has been the large production base, which integrates the projects of ore beneficiation, crushing and screening. With the industrial restructuring of the mining machinery, Hongxing Heavy Industries makes the main focus of accelerating the structural adjustment of mining manufacturing and upgrade clear and definite, actively building mining machinery manufacturing base and making a breakthrough.
The main products produced by the company such as cone crushers, sand making machine and so on are widely used in the country's major construction, mining coal, metallurgy, ore crushing, transportation construction, municipal construction, water conservancy and other fields, involving more than 100 industries. It has played an extremely important role in stone shaping, construction waste disposal etc.
In recent years, in accordance with the requirements of structural adjustment and upgrade of the mining machinery, Hongxing Heavy Industries has determined the new development strategy, adhering to the principle of independent innovation, cyclic development, deepening reform and vigorously promoting technological innovation and upgrades, the optimization and upgrade of product and the cluster development of enterprises.
On product innovation, Hongxing Heavy Industries has done a better job. Many products has obtained national patent. Impact crushing machine has adopted advanced hydraulic start device and hydraulic insurance system, which can greatly lessen the problem of starting slowly and easy to be out of order. Moreover, it is made from wear resistant materials with advanced design. The crushing equipment uses a unique sealing structure and they are energy saving and environmental protection, which can effectively improve production efficiency and reduce the cost of production inputs.
Currently, the increasing development of national economic construction, a large number of sand and gravel materials is needed. The company constantly conducts innovation and improvement of mining machinery and the technical content of the crusher developed is high, which has won the favor of many customers in the domestic market. At the same time, the crushing equipment with high scientific and technological content is popular among more than 30 countries in Europe, Asia and Africa, which helps the company to compete in the international market and vigorously promotes the position of innovation strategic of Chinese national industries in the international arena.
As for the mining machinery enterprises, they are the ones to serve for the mineral resources companies. Therefore, the mining machinery enterprises and the nonferrous metals industry enterprises such as coal, iron ore, zinc and other nonferrous metals are in the same industrial chain. From the perspective of industry chain, the boom of the mineral resources is closely related with mining machinery. The boom of mineral resources will inspire more industrial capital to expand the exploration, increasing the demand for mining equipment (jaw breakers, belt conveyor). On the other hand, the expansion of mineral scale will also increase the demand for mining equipment.
Viewing from the coal industry, coal is the main energy in our country, which is an indispensable material base for the development of economy and society and plays an important role in China's energy structure. Entering the 21st century, coal industry developed rapidly. The coal industry is one of the important basic industries and the coal production is the first in the world. At present, the coal industry in our country has the capacity to design, construct and manage ten million tons of open pit coal mine and medium-sized mines. The construction of large scale coal base and modern large scale mines provides a good opportunity for the development of mining machinery industry.
Mining machinery enterprises should seize the opportunity of industrial restructuring and deepening the reform to accelerate the pace of combination, merger, restructuring and joint-stock reform of mining machinery manufacturing enterprises under the guidance of the national policy, setting up the large-scale mining equipment group that regards the mining machinery manufacturing enterprises as the main body, coal production enterprises take a share and the research institutes participate to form a enterprise entity with manufacturing and development capabilities, engineering sets capacity and innovation capability. Building the enterprise into a mining construction enterprise group with modern market competitiveness and risk-resisting ability, striving to provide the mines with complete set of equipment to reduce the risk and make a positive contribution to the development of China's coal industry.
For a long time, the extensive industrial production mode has caused a great waste of resources and environmental damage. In recent years, as the problem of energy shortage has become increasingly prominent and the problem of environmental pollution has left a serious impact on the lives of people, low-carbon and environmental protection have become the world's common pursuit of economic growth mode. There is no exception with China. Especially after the "12th Five-Year Plan, the construction of a resource-saving and environmental-friendly society has become a society-wide consensus. Mining machinery industry, as the industry with larger energy consumption,should also do its best to reduce the energy consumption, achieving green development.
After years of development, at present, China has become the big country of the production and consumption of mining machinery in the world. The mining machinery industry has formed a large industrial scale and the annual output is increasing year by year. In addition to meet the needs of the domestic market, the mining equipment (cement plant) has also been exported to Africa, Latin America and other regions, having made outstanding contributions to China's economic growth.
But another phenomenon should arouse the attention of the mining equipment (hammer crusher) industry in China. The high production of the mining equipment just has opened the market of underdeveloped regions such as Africa, Latin America and other regions in the international market, but for the Europe and America market, the field that the mining machinery of the world compete for, our mining machinery does not seem to produce a satisfactory report card.In fact, it is largely because that our mining machinery can not meet the demand of the U.S. and European markets for energy conservation. Energy waste of our mining machinery is not only reflected in the manufacturing process, but also reflected in the usage. Compared with the products of developed countries in Europe and the United States,the products with high energy consumption in our country is not in line with the concept of low-carbon and environmental protection. Therefore,many domestic mining equipments (impact breaker) are shut out of the U.S. and European markets.
Taking an overview of the international mining equipment market, the competitive focus of mining equipment is placed on the words of the "low-carbon and environmental protection”. If the domestic mining equipment industry does not put more efforts in the low carbon and environmental protection and improve the "green content" of the mining machinery, they will certainly be frustrated in the international market. Speeding up the transformation from from extensive production mode to intensive development mode helps to achieve sustainable development of China's mining machinery industry.
Taking an overview of the development of mining machinery industry last year, it seems that more and more relevant manufacturers begin to enter the mining machinery industry so that the ore beneficiation plant and coal preparation plant and other enterprises are gradually set up,which put forwards higher requirements for mining equipment. Because of the strong advocation of energy saving and environmental protection in the "Twelfth Five-Year" period, mining equipment industry begins to start up the development and application of energy saving and environmental protection products.
With regard to the traditional mining equipment, there is still a lot of aspects for improvement.Increasing the processing capacity of the new products (ball mill) is the most important task, on this basis, it is necessary for the workers in this industry to work hard to reduce the use of hazardous materials,improve the environmental performance of the equipment and reduce the weight of large equipment (mobile crushing station).
Currently, many medium and small size enterprises imitate traditional equipment to earn a living, but not to improve the quality of the products (sand washing machine), which leads to the instability in the mining industry as a whole and hinders the development pace of the overall market.Only the excellent quality is the key to win between companies in the same industry, but the poor quality products not only disrupt the formal market, but also invades the rights and interests of the user. Such kind of enterprise will not develop for a long-term.
In fact, the most critical way for the development of enterprise is to open up the market with high quality products. If the mining machinery enterprises want long-term and stable development of the mining enterprise, they must abandon the suppress of traditional equipment, possess the unique market competitiveness and independently research new environmental friendly products to avoid being eliminated by the fierce market competition to stand on the forefront of the industry for a long time.
The sustained development of economy can not separated from the continuous innovation of each pillar industries.Mining machinery industry, as an indispensable part of the domestic economy construction industry, has always been widely used in the field of construction, transportation, production and construction. Moreover, with the acceleration of the pace of development, the demand for domestic mining machinery industry is also increasing.
In recent years, the state's construction projects have been put into the implementation and the infrastructure construction and the rectification of the residential housing are inseparable from the mining machinery. Ore beneficiation, crushing equipment (combination crusher, impact breaker) and milling equipment (cement plant) always follow the development needs of the domestic equipment,conducting ongoing innovation and structural adjustment of the production scale of enterprises.
Therefore, with regard to the development of the domestic mining machinery industry, in such a great development prospect, steadily grasping opportunities for development of the industry, conducting active innovation of mining machinery and equipment, constantly improving the quality of the machinery and equipment and at the same time enhancing the capacity of establishing brand of the domestic mining machinery enterprises and make unremitting efforts for the domestic mining machinery industry to root in the international market stably.
After years of development, Hongxing Heavy Industries not only has an absolute advantage in the domestic market, but also occupies a certain percentage of the share in the international market. At the same time, the company continues to explore and make innovation of the core technology of crushing and screening equipment and other mining machinery to seize the upstream market of the industry chain, enlarge the expansion of the global mining machinery market, lead the domestic mining machinery industry to compete in the international mining machinery market, striving to make the national mining crushing equipment occupy a position in the fierce competition in the world market.
Mining machinery industry, as an important part of China's machinery manufacturing industry, also shoulder the major responsibility to supply mainstream equipment to support the national economy. It reflects the level of development of the country's industrialization. With the development of economic globalization, the development direction of domestic mining machinery industry also inclines to intelligent, pleasant, digital and large-scale.
Currently, some problems exist in the development of mining machinery industry, which is restricted by the factors that the overall strength is not strong, the technological base is relatively weak, and product quality and technology. Therefore, to speed up the integration and develop high-end products through independent innovation is the best way to adapt to the current economic development pattern, which is the development focus of the domestic mining machinery in the future.
Firstly, the system of mining machinery industry is huge, when emphasizing on the innovation and research, it is necessary to focus on the improvement of technology level. In the machinery manufacturing industry, the enterprises should locate their own position well, be awareness of corporate characteristics and cultural ideas, establish their own brand image and strengthen the brand effect and a sense of crisis. Mining machinery industry should also not expand the production blindly, regard technological innovation as the heart of the concept, focus on the development of the high-end crusher equipment (cone crushers, hammer crusher)with industrial competitiveness, strengthen the integration of science and technology, and enhance the efficiency of comprehensive usage.
Secondly, the future development space of the mining machinery industry is vast. To strengthen the investment in research and the training of personnel to prepare for the development of high-tech industry in the future. Vigorously implementing the scientific equipment with independent intellectual property rights and promoting the construction of equipment industrial base to lay a solid foundation for the path of international development.