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近年来我国钼精矿出口数量逐渐增加,预计到1990年我国钼精矿出口将达到2000吨以上。外商对我国出口的钼精矿均提出对铋元素含量的要求,而我国1982年发布的“钼精矿质量标准”(GB3200—82)中未对铋含量提出规定。国外各钼生产国及厂家钼精矿质量标准中除苏联外均对铋元素作了规定。现将美国、瑞典、苏联以及西德的钼精矿质量标准列表于下:
In recent years, China’s molybdenum concentrate exports gradually increased, is expected to 1990 China’s molybdenum concentrate exports will reach 2,000 tons. Foreign Molybdenum concentrate exports to China are made on the bismuth element content requirements, and China’s 1982 release of “molybdenum concentrate quality standards” (GB3200-82) did not bismuth content requirements. Foreign molybdenum producers and manufacturers of molybdenum concentrate quality standards in addition to the Soviet Union were outside the provisions of bismuth. Now the United States, Sweden, the Soviet Union and West Germany molybdenum concentrate quality standards are listed below: