在洗煤工艺中,过滤机的运行效果直接影响末级洗煤回收率。相对颗粒较小的煤粉在原煤中占相当比例,若不能有效进行回收,不仅使精煤回收率降低,增加生产经营成本,同时还可导致煤泥水含量增加,使环保运行负担加重。2007年3月,天宏焦化公司为实现外排水达标和节约用水,将部分二次水用于洗煤生产,由于二次水对真空过滤机配风管有 In the coal washing process, the operation of the filter directly affects the final stage of coal recovery. Relatively small particles of coal in the coal accounted for a considerable proportion, if not effectively recovered, not only reduce the recovery of coal, increase production and management costs, but also can lead to increased slime water content, increasing environmental operational burden. In March 2007, Tianhong Coking Company to achieve external drainage standards and water conservation, part of the secondary water for coal washing, the secondary water on the vacuum filter with duct