Alireza Afradi - Department of Mining and Geology, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran
Gheys Habibi mahali - Department of Mining and Geology, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran

Coal is a light, brittle, black substance left over from the half -burning of wood or other plant and animal organs, most of whose compounds have been converted to carbon. Coal is a combination of sulfur, shale, kaolin, clay minerals and carbonate, and compounds in coal ash, silica, aluminum oxide and other materials such as Fe۲o۳, Cao, Mgo. Due to the low quality of coal in recent years, the need Increased charcoal washing. For this reason, in this study, we analyzed coal processing and its effects.

coal, quality, processing