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早在1975年就工业化生产的锌熔法今天仍被看作是回收硬质合金废料的重要方法。12年来,美国特列达因、华昌公司利用锌熔法回收了大约5500吨废料,其中,4500吨钨、550吨钴,90吨钽/铌和60吨钛。按现在价格算,回收材料价值10亿美元。据估计,美国碳化物工业使用了大约8～12％的锌法回收材料,欧洲的这个百分率略低,而日本不足2％。美国目前的锌熔法产量为600吨/年
As early as 1975, the zinc melt method for industrialized production is still today regarded as an important method for the recovery of hard alloy scrap. For 12 years, the United States Treasury Department, Huachang companies use zinc melting method to recover about 5,500 tons of waste, of which 4,500 tons of tungsten, 550 tons of cobalt, 90 tons of tantalum / niobium and 60 tons of titanium. Calculated at the current prices, the value of recycled materials 1 billion US dollars. It is estimated that the U.S. carbide industry uses about 8-12% of zinc recovered material, which is slightly lower in Europe and less than 2% in Japan. The current zinc melt production in the United States is 600 tons / year