为了扩大旋流细筛的应用范围,探求在锡选矿上的适应性,在云锡公司新冠采选厂进行了筛分分级试验。实验室的试验结果表明,在给矿浓度波动较大范围内(10～30％)均能获得大于60％的沉砂浓度,筛下产出率可达48～58％,且有富集作用,沉砂中减少合格粒级入磨 In order to expand the application scope of the swirl fine sieve and explore the adaptability in the tin beneficiation, a screening classification test was carried out in the new crown mining plant of Yunxi. The laboratory test results show that grit concentration of more than 60% can be obtained within the range of 10-30% of ore concentration fluctuations, and the yield rate under the screen can reach 48-58% with enrichment , Grit to reduce the qualified particle size into the mill