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废旧硬质合金的回收大部分都采用锌熔法和化学法。尽管从费用角度看 ,锌熔法更加有利 ,但在目前世界范围内 ,不用化学法进行“纯化” ,只用锌熔法是不行的。“纯化”将避免不理想的、对质量有害的杂质的积聚。因此 ,这两种方法被认为是相互的补充
Most of the recycling of used carbide is zinc melting and chemical methods. Although the zinc melting method is more advantageous from a cost point of view, it is not feasible to use the zinc melting method in the current world without the “purification” of chemical methods. “Purification” will avoid the build-up of undesirable, mass-detrimental impurities. Therefore, these two methods are considered to complement each other