由二次原料生产钨

来源 :中国钨业 | 被引量 : 0次 | 上传用户:hunterfall_horse
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80年代国外生产中的钨废料占钨总需求量的20~25%。美国、日本和西欧国家的钨精矿和钨废料需求量如下。因在钨产品总需求量中没有考虑所利用的钨化合物(仲钨酸铵和三氧化钨),所以废料所占的比例提高了一些。但很显然,在1982—1983年间,亦即原生产品钨精矿和仲钨酸铵的生产积极性和需求量最低落的时期,这一比例达到了最高值。
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