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一、前言 为了克服焙烧——浸出——电解从硫化物中提取锌而存在的SO_2对环境造成的污染,有效地从品位低的复杂硫化矿中提取金属锌,人们已对硫化矿的直接浸出作了许多的研究。在实际的工业生产过程中,即使是被选出的精矿,也不免含有SiO_2以及铁、铜、铅、钴、镉、锑的硫化物,在用高铁盐浸做浸出剂时,除SiO_2完全不溶外,其它的金属硫化物或多或少地进入溶液,从而得到一种含有多种金属离子的溶液。
I. INTRODUCTION In order to overcome the pollution caused by SO2 existing in the roasting-leaching-electrolysis process of extracting zinc from the sulfide and effectively extracting metallic zinc from complex sulphide ore with low grade, direct leaching of sulphide ore has been carried out Made a lot of research. In the actual process of industrial production, even the concentrate that is selected can not avoid containing sulfides of SiO 2, iron, copper, lead, cobalt, cadmium and antimony. When using high-iron salt as leaching agent, Insoluble, other metal sulfides enter the solution more or less, resulting in a solution containing a plurality of metal ions.