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降低送往选矿厂的钨矿石质量会增加包括粗精矿精选在内的不同选矿阶段的金属损失。 某选厂由于方解石与白钨矿品位之比为80～120:1、甚至200:1,在矿石中有钨以不溶形式存在的矿物以及由于钼白钨矿含量的增加和铁化白钨矿的出现等原因,使粗精矿在精选成水冶能加工的合格产品的过程中钨损失了大约10％。在选别许多其它钨矿床的矿石时也有这种情况。 研究结果指出,用常规的浮选方法消除恶化精选过程未获成功。最有效的途径看来是要用湿法冶金方法代替浮选方法来处理粗精矿。为此必须考虑到,选矿厂转为生产含2～3％WO_3粗精矿时,粗精矿的产率比生产富标准精矿的产率要增加许多倍。在没有根本改全工艺流程的情况下,湿法冶金加工只能是全工艺的一小部分。
Reducing the quality of the tungsten ore sent to the concentrator increases the metal loss at different beneficiation stages, including the selection of coarse concentrates. In a beneficiation plant, due to the fact that the ratio of calcite to scheelite grade is 80-120: 1 or even 200: 1, the presence of tungsten in the ore as an insoluble form of minerals and the increase in the content of scheelite due to the addition of scheelite And other reasons, the rough concentrate will lose about 10% of tungsten in the process of selecting qualified products that can be processed into water. This is also the case when sorting ore from many other tungsten deposits. The results indicate that the use of conventional flotation methods to eliminate the deterioration of the selection process was unsuccessful. The most effective way seems to be to use the hydrometallurgical method instead of flotation method to deal with crude concentrate. To this end, it must be taken into account that when converting concentrates to the production of coarse concentrates containing 2 to 3% WO3, the crude concentrate yields have many times more productivity than the production of standard concentrate. Without a fundamental change to the process, hydrometallurgical processing can only be a small part of the overall process.