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含金砂矿中金及其他有用矿物不与脉石相结合,但由于粘质物质的存在使之与砂、砾等胶结在一起.因此,在含金矿砂选别之前,必须使物料松散并除去粘土杂质及大块砾石.目前,在采金船上广泛的应用圆筒筛——洗矿筒筛,对原矿砂进行洗矿、碎散和筛分.以达到这一目的.但在生产实践中,圆筒筛的效能普遍发挥的不好,筛分效率低,金的损失大.我国某砂金矿经测定筛分效率为50%,金的回收率为71.42%.金在砾石尾矿中的损失率为16.81%,占总损失率的58.8%.特别是当采金船在挖掘含泥量大的
Gold and other useful minerals in the gold-bearing sands do not bond with the gangue but are cemented with sand, gravel, etc. due to the presence of the mucilaginous material, so the material must be loosened and removed prior to gold-bearing ore sorting Clay impurities and large gravel.Currently, in the gold mining vessels widely used cylindrical sieve - washing sieve, raw ore washing ore, crushing and sieving.To achieve this goal, but in production practice , The general performance of the cylindrical screen is not good, the screening efficiency is low, the loss of gold large.Our country is determined by a screening of gold ore screening efficiency of 50%, the gold recovery rate of 71.42% gold in the gravel tailings Of the loss rate of 16.81%, accounting for 58.8% of the total loss rate.Especially when the gold mining vessels digging mud content