Emissions of inorganic dust belong to the group of unorganized emissions that are generated from large areas. Air pollution in the area of coal industry enterprises depends on climatic and mining and geological conditions. The solution of the current mining technical problem of improving the efficiency and safety of mining operations in the development of mineral deposits, which is of great economic and social importance, is inextricably linked with the improvement of methods for fixing dusty surfaces on the objects of the mining complex. Methods of dust suppression are considered and analyzed. Industrial tests of special preventive drugs were carried out and the necessary expenditures of funds and methods of their effective use were determined.
Gravity separation is considered as the most used processing technique for thermal coal cleaning. A broad variety of methods and machines was developed for that purpose. However, the performance of those apparatus under different conditions is not the same. In this article, the results of coarse thermal coal cleaning in various equipment were simulated by means of mathematical modelling. The comparison of obtained quantitative and qualitative indicators of gravity separation showed that for processing of difficult-to-wash thermal coal the heavy medium-based processes are more favorable, whereas for more easily washable coal jigging can be efficiently used as well.
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