8 mm弹性杆筛板在煤泥减量化生产中的应用研究

Study on application of 8 mm elastic-rod screenplate in slime-reduction

由于矿井原煤中细粒煤含量增大,加压过滤机排料周期延长,快开压滤机使用频次升高且产品水分偏大,导致浮选精煤水分控制难度加大,煤泥水系统成为洗选系统处理能力提升的瓶颈。新桥选煤厂应用弹性杆筛板进行原煤8 mm深度筛分,实现煤泥减量化生产,系统内煤泥含量降低3.93%,缓解了煤泥水系统压力,洗选系统处理量增大45 t/h,浮选精煤占末精煤中比重降低了5.54%,末精煤产率提高了12.42%,促进了末精煤水分恢复正常,生产时间缩短,洗选成本降低,每年可增加经济效益约2 380.31万元。

Due / cntent of fines in ra＊w c a l has been increased,and discharge cycle has prolongquency of quick-filter has increased, and product moisture higher than before, resul/ng in quality control The slime water system becomes choke point of washing system processing capacity. Xinqiao Coal Preparation Plant applied elastic-rod screenplate in the 8 mm depth screening of raw coal to achieve slime reducing production. T h e slime content decreased 3. 93% , relie-ving pressure of slurry system. The treatment capacity of processing system increased 45 t /h,the proportion of flotation concentrate in small clean coal decreased by 5. 54% , and small clean coal yield increased by 12. 42% , which promoted moisture recovery of final clean coal,and processing time w as shortened, and cost of coal processing w as reduced, a nd economic benefit w as increased about23. 803 1 million yuan.