砂金矿中小于0.1毫米的物料一般不含金或含金甚微。例如珲春金矿的砂金矿中小于0.1毫米的金占0.18%,而同粒级矿泥则占原矿砂的13.77%。小于0.1毫米的金俗称漂浮金,在选别过程中很难回收,而同一粒级的矿泥却对选别过程,特别是机械选别过程起干扰作用。所以,在砂金矿机械选矿厂内,总是设法将小于0.1毫米的矿泥脱掉。生产上常用的脱泥设备为各种规格的脱泥斗,而溜槽选金允许的物料粒级宽,且处理量大,因而溜槽选别之前不脱泥。
Gold in less than 0.1 mm of material is generally not gold or gold effect. For example, gold placer gold deposits in Hunchun in less than 0.1 mm gold accounted for 0.18%, while the same size accounted for 13.77% of the raw ore slime. Less than 0.1 mm gold commonly known as floating gold in selected don't process is difficult to recover, and slime of the same particle level but the separation process, especially machinery course interference effect. So, in the sand gold mineral processing plant machinery, always try to place less than 0.1 mm slime off. Production of commonly used off mud equipment for a wide variety of desliming hopper, chute gold allow solid particle size, and large processing capacity, and chute don't before non desliming.
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