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研究了在普里莫尔斯克(Примолск)白钨矿选矿厂中应用细筛代替水力分级的可能性,并分析了这个方案的可行性。值得指出的是,应用细筛可以在磨矿后直接获得在粒度组成上适于浮选的最终给矿。筛孔尺寸为0.23 mm的由聚胺酯制造的Derrick筛分机工业试验结果表明,应用细筛后,分离到筛下产品中的粒度为-0.25+0.08 mm的白钨矿的分布率提高25%~35%。使得为白钨矿浮选准备的磨矿回路的效率提高10%~12%。筛分机的筛板的使用时间可长达6个月,筛分机的处理能力达到38 t/h。
The possibility of using a fine sieve instead of a hydraulic classification in a scheelite concentrator at Primorsk was studied, and the feasibility of this scheme was analyzed. It is worth noting that the application of fine sieving can directly obtain the final ore feed suitable for flotation after grinding. The industrial test results for Derrick screens made of polyurethane with a mesh size of 0.23 mm show that the distribution of scheelite with a particle size of -0.25 + 0.08 mm isolated into a sub-sieve product is increased by 25% to 35% %. Making the efficiency of the grinding circuit prepared for the flotation of scheelite increased by 10% ~ 12%. Sieve sieve of the use of time up to 6 months, the screening machine capacity of 38 t / h.