会泽铅锌矿长期以来,采用锰粉和高锰酸钾作氧化剂,氧化硫酸锌溶液中的亚铁。由于使用的原料是从烟化炉挥发富集而得的氧化铅锌烟尘,在烟尘中含有尚未燃烧的细粒粉煤,占烟尘量的0.5～3%。为了综合回收锗,用丹宁富集,沉锗后的溶液含有溶解的丹宁有机物。细粒粉煤及丹宁有机物的存在,使得氧化除铁时,锰粉及高锰酸钾的用量远远超过亚铁氧化的理论量。多年的生产实践表明:每吨锌消 Huize lead-zinc mine has long been the use of manganese oxide and potassium permanganate as oxidant, oxidation of ferrous sulfate solution. Since the raw materials used are volatile zinc oxide dust derived from the fuming furnace, it contains 0.5-3% of the amount of dust which is not burnt in the soot. In order to comprehensively recover germanium, enriched with tannin, the germanium-germanium solution contains dissolved tannin organic matter. The presence of fine-grained coal and tannin makes the amount of manganese and potassium permanganate far exceed the theoretical amount of ferrous oxidation when oxidizing iron and iron. Years of production practice shows that: zinc consumption per ton