我国选煤厂大于0.5mm的煤一般采用跳汰和重介选,而小于0.5mm的煤则采用浮选。近几年煤泥分选技术虽有新的发展,但尚不能满足选煤生产的需要,并存在如下问题:1.许多选煤厂跳汰机的分选下限高,而用振动筛回收粗煤泥时,因其灰分高,在掺入出厂精煤后,影响销售精煤的灰分或全厂精煤的产率。2.有的选煤厂因入选原煤量增加,而浮选车间的处理能力不足,造成出厂煤泥量增加,并影响全厂精煤的产率。3.有的小型炼焦煤选煤厂不设浮选车间,煤泥不经分选而直接排至厂外沉淀池,不但使煤炭资源得不到合理利用,而且加剧矿区环境污染。螺旋分选机是分选煤泥的新重选设备,国外一些国家已在选煤生产中广泛应用,国内近几年只在选矿生产中推广使用。为了提高我国煤泥处理的技术水平,改 China’s coal preparation plant is greater than 0.5mm coal generally used jigging and HM, while less than 0.5mm coal flotation. In recent years, although the slime sorting technology has a new development, but can not meet the needs of coal preparation, and the existence of the following problems: 1. Many coal preparation plant jig sorting lower limit, and coarse with shale recovery Slime, because of its high ash, after the incorporation of refined coal, the impact of sales of coal ash or whole plant clean coal yield. 2. Some coal preparation plants because of the increase in the amount of raw coal selected, and the flotation plant’s lack of capacity, resulting in an increase in the amount of the factory slime and affect the entire plant yield of clean coal. 3. Some small coking coal preparation plant without flotation plant, slime without sorting directly discharged to the factory outside the sedimentation tank, not only the rational use of coal resources, but also aggravate mine pollution. Spiral sorting machine is the new re-election slime sorting equipment, some foreign countries have been widely used in the production of coal preparation, the domestic production in recent years, only in the promotion of the use of dressing. In order to improve the technical level of China’s slime treatment, change