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钨矿物性脆易碎,在采矿、破碎和选矿的过程中产生许多小于74μ的細泥,难以收回,形成大量的金属損失。1956年以来,中南各钨矿相繼采取細泥归队处理的措施,使用水力旋流器、自动溜槽或舖布淘汰盤处理細泥,解决細泥的粗选問題。但是选出的钨細泥品位只有17％～20％WO_3,杂質多、不能銷售出厂;粒度細,难以有效地精选。对于这种钨細泥,过去或用来制造人选白钨,或在大批合格精矿里略为搭配少量摻合出厂。前者是水冶法,需要消耗巨量的碱(苛性鈉或苏打),操作复杂,成本高。后者的摻合数量有限,都不是最好的处理方法。
Tungsten mineral brittle fragile, in the mining, crushing and beneficiation process produces many less than 74μ fine mud, difficult to recover, the formation of a large amount of metal loss. Since 1956, all tungsten mines in Central South China have adopted the measures of fine mud rejoining one after another, using hydrocyclones, automatic chuteing or laying out of churning plates to deal with the fine mud and solve the rough selection of fine mud. However, the grade of tungsten fine mud is only 17% ~ 20% WO_3. There are many impurities and can not be sold at the factory. Fine grain size makes it difficult to select effectively. For this tungsten fine mud, the past or used to make candidates for the white tungsten, or in a large number of qualified concentrate slightly with a small amount of blending factory. The former is a hydrometallurgical method, which requires a large amount of alkali (caustic soda or soda) to be consumed, complex operation and high cost. The latter blend is limited in quantity and is not the best treatment.