Study on recovery of heavily oxidized fine coal slime

The fine coal slime in Changzhi Mining Area is difficult to get effectively separated with the use of flotation process. To tackle this problem, an analysis is made on the property of the slime. Based on analysis result, the existing coal cleaning system is renovated through the use of hydrocyclone in combination with the LXA spiral separator and ZKJ-D laminated vibrating fine screen. The renovation makes it possible to realize effective separation of the heavily-oxidized fine coal with a high separation sharpness and feasibility, creating as a result a noticeably favorable economic benefit for the plant.