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奥托昆普公司科科拉炼锌厂1969年刚投产时,浸出液的净化是采用两段间断式净液,第一段加锌粉和砒霜除铜、钴和镍;第二段加锌粉除镉。1974和1975年将它改为现在的三段净液:即第一段加锌粉除去大部份铜,第二段用锌粉和砒霜除去残余的铜、钴和镍,第三段加锌粉沸腾净液除镉。第一和第三段是连续作业,而第二段是自动控制的间断式作业。这样改进的目的是在净液过程中尽可能将其中的杂质分离和富集起来,以避免其在过程中循环和便于直接进一步回收而消除中间处理步骤。现行方法的特点是:对杂质含量有较大的适应性;和低的锌粉消耗,依杂质含量不同约为阴极锌的2.5—3.0%。 文章论述了主要作业过程,还讨论了材料消耗数据、劳动力和维护要求,各项费用的分布。
Outokumpu company Kokor zinc smelter Just put into operation in 1969, the leachate purification is the use of two intermittent clean liquid, the first paragraph of zinc and arsenic in addition to copper, cobalt and nickel; the second paragraph plus zinc In addition to cadmium. In 1974 and 1975 it was changed to the current three paragraphs of net liquid: the first paragraph of zinc powder to remove most of the copper, the second paragraph of zinc and arsenic to remove residual copper, cobalt and nickel, the third paragraph of zinc Powder boiling addition to cadmium. The first and third sections are continuous operations, and the second section is automatic controlled intermittent operations. The purpose of such improvement is to separate and enrich the impurities in the net liquid as far as possible so as to avoid the process of recycling and facilitating the direct further recovery to eliminate the intermediate processing steps. The current method is characterized by: a greater adaptability to the impurity content; and low zinc powder consumption, depending on the impurity content of about 2.5-3.0% of the cathode zinc. The article discusses the main operation process, but also discusses the material consumption data, labor and maintenance requirements, the distribution of fees.