INFLUENCE OF ORGANIC AND IN ORGANIC COMPOUNDS ON FLOTATION OF LOW COAL RANK
The article deals with the development of selective reagent modes of flotation of low coal ranks of Kuznetsk and Donets Basins on the basis of the influence of organic and inorganic compounds on physicochemical and flotation properties of these coals. It was proved that the presence of mineral impurities and oxygen containing compounds in the gas coals in question as well as the presence of microcracks and large voids cause energy unsaturation of their surfaces. The authors studied the influence of compound ethers structure on their adsorption and flotation characteristics. It was found that application of compound ethers of isomeric structure improves the quality of coal concentrates. It was also proved that coal surface modifying with inorganic sulphur-containing salines makes it possible to reduce the content of pyritic impurities in coal concentrates.