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前言磷是钨精矿中的有害杂质,由于冶炼过程75—85%的磷直接进入钨铁,严重影响质量,因此,冶炼厂对原料中含磷要求严格。吉林铁合金厂炼一级钨铁限制原料含磷小于0.035%。1982年以前,我国选厂商品钨精矿均按冶金部 YB-504-65标准进行生产,黑、白钨一级品精矿要求含磷0.05—0.1%。1981年第一次全国钨业科技工作会议,提出振兴钨业,改善钨精矿产品质量,增强在国际市场的竞争能力。对钨精矿产品质量,制定了新
Preface Phosphorus is a harmful impurity in tungsten concentrates. Since 75-85% of the phosphorus in the smelting process directly enters the ferro-tungsten and seriously affects the quality, the smelter has strict requirements on the phosphorus in the raw materials. Jilin ferroalloy refining a class of tungsten limit raw materials containing phosphorus less than 0.035%. Before 1982, China’s tungsten concentrates were all produced according to the YB-504-65 standard of the Ministry of Metallurgy. The requirements for the primary and secondary concentrates of black and white tungsten were 0.05-0.1% phosphorus. In 1981 the first meeting of the national tungsten industry science and technology work, proposed to revitalize the tungsten industry, improve the quality of tungsten concentrate products, enhance the competitiveness in the international market. The quality of tungsten concentrate products, developed a new