Coal Enrichment by Pneumatic Separation Method Using «SEPAIR»

In the process of gravity enrichment of the Kara-Kech coal deposit of the Kyrgyz Republic, a sample of ordinary coal with a grain size of 0.5-100 mm was used. The studies were carried out to determine the parameters of the pneumatic separation process. As a result of the research, the main technological parameters of pneumatic coal separation have been determined. The chemical analysis of the enrichment products was performed in the laboratory of Scientific Research Center "Ugol" LLP. Dry pneumatic separation of coals is provided by the process of separating products by density in a pseudo-liquefied layer with controlled circulation of the layer, which makes it possible to obtain enrichment products that meet the requirements. When coal was enriched by dry pneumatic separation, coal concentrate was obtained, with an ash content that decreased by 12.67% relative to the initial ordinary coal with a yield of 61.92%. The ash content of the industrial product was 35.97% with a yield of 3.03%, and waste with an ash content of 85.06% and a yield of 10.52%, the amount of the resulting spillage with unenriched coal fines, the total ash content 24.70% with an output of 24.53%.