近十几年来,苏联选煤厂的原料基地有了很大变化,选煤能力也相应提高。在被选煤中,细粒级的含量急速增长,选煤厂的年生产能力从290万 t 增长到340万 t。因此,洗选精煤产生的细粒产品、中煤和煤泥的脱水是十分重要的问题。在洗选粒度为0～13mm的跳汰机中,由于颗粒尺寸小于0.5mm 的 In the past ten years, the raw material base of the Soviet Union coal preparation plant has undergone great changes, and the coal preparation capacity has also been correspondingly raised. In the selected coal, the fine-grained content increased rapidly, and the annual production capacity of the coal preparation plant increased from 2.9 million tons to 3.4 million tons. Therefore, the washing of fine-grained coal products produced, coal and slime dehydration is a very important issue. In the washing jig size 0 ~ 13mm jig, because the particle size is less than 0.5mm