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国外制取钨精矿的原料来源,既可以是钨矿石(白钨矿和黑钨矿),也可以是各种有色金属复合矿石。用钨矿石生产的钨大约占精矿中钨总生产量的50%(表1)。美国、加拿大、澳大利亚、玻利维亚、南朝鲜是钨精矿的最大生产国。就钨的产量而言,中华人民共和国占世界首位。近年来,加拿大、土耳其和美国一批新建企业已开工生产,澳大利亚的选厂和加拿大的选厂为增加生产能力而进行了扩建。1985年英国联合企业的开工,预计每年能生产2.3万吨钨;加拿大选厂的投产,预计每年能生产4.2万吨钨。
Foreign sources of raw materials for the preparation of tungsten concentrates, both tungsten ore (scheelite and wolframite), can also be a variety of non-ferrous metal composite ore. Tungsten produced from tungsten ore accounts for about 50% of the total tungsten production in concentrate (Table 1). The United States, Canada, Australia, Bolivia, South Korea is the largest producer of tungsten concentrates. In terms of tungsten production, the People’s Republic of China ranks first in the world. In recent years, a batch of new-build enterprises in Canada, Turkey and the United States have started production, while Australian processing plants and processing plants in Canada have expanded their production capacity. The start of a British conglomerate in 1985 is expected to produce 23,000 tons of tungsten per year; the commissioning of Canadian processing plants is expected to produce 42,000 tons of tungsten per year.