Coal Processing Plant
Coal preparations goal is to remove or reduce impurities in raw coal (including ash, waste rock, sulfur, etc.) and the treated coal is split into a number of different kinds of grades to fulfill the needs of users.
Coal preparation serves several purposes. One important purpose would be to raise the heating price of the coal by mechanical removing impurities. This is needed in order to locate a industry for the merchandise. Run-of-mine coal from a modern mine may incorporate as much as 60 % reject materials. Tanzania copper ore crusher Pollution control often requires partial removal of pyrites using the ash to reduce the sulfur content of the ore. Ash content often has to be controlled to conform with a prescribed quality stipulated in contractual agreements. Due to firing characteristics, it is as essential to offer the ash content with a given level as it is to reduce it.
Freight savings are substantial when impurities are removed prior to loading. Finally, the rejected impurities will be more easily disposed of in the mine site remote from cities than in the burning site, that is usually in the populated area.
Technology of Coal Preparation Processing
Coal preparation based on different methods can be split into physical preparation, physical and chemical preparation, chemical and microbial preparation and other coal preparation.
Physical coal preparation is beneath the physical properties of coal and impurities (for example particle size, density, hardness, magnetic and electrical properties, etc.) on the difference of separation, the key types of physical separation:
1. Preparation of gravity, including jigs, heavy-medium coal preparation, coal preparation chute, shaking preparation, for example wind preparation.
2. Electromagnetic election, while using electromagnetic properties of coal and impurities separation differences, this method is not in the production using coal.
Chemical coal preparation takes benefit of chemical a reaction to produce a useful component of ore enrichment, remove impurities and harmful elements process. granite production process Currently found in the laboratory technique is chemical desulfurization. In accordance with widely used chemical reaction mechanism of numerous types and will be split into alkali treatment, oxidation and solvent extraction.
Microbial coal preparation is making use of some microbial autotrophic and heterotrophic microorganisms, directly or indirectly, to use its metabolites within the leaching of sulfur from coal to own reason for desulfurization.
Clean coal ore technology is a group of newly developed coal processing, conversion and combustion of soot inside the flue gas channel from the general purification technology. Aim is to decrease the pollution of coal burning around the environment, improve row stone utilization efficiency, and lower costs.
Clean coal technologies could be divided into three categories. Before burning through coal preparation or admixture of other substances to boost combustion efficiency and pollutant removal; combustion, combustion and the nature of change in the combustion process to get rid of contaminants; combustion, flue gas decontamination.
Using low-grade coal or pulverized coal to produce a certain shape made of coal goods are called moulded coal. Moulded stone may be split up into 2 kinds of civil and industrial use, the previous including coal ball and honeycomb, the second including for industrial boilers, kilns, and for the vaporization of steam coal, iron smelting and casting coke.
Burning coal in accordance includes anthracite, bituminous, cannel ore, peat, numerous other sub and so on. Burning coal can improve the thermal efficiency of coal combustion, save coal and lower pollution. jaw crusher in Indonesia Such as my subject from the national coal briquette, if accompanied by advanced stoves, more efficient than burning coal for heat twice, save 20% ~ 30% of material, the emission of numerous harmful substances reduced by 40% to 80%. Briquette energy saving rate is the highest among all the clean coal technology relative environmental benefits are high.