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铁帽型金银矿石显著特点是金属矿物氧化率高,含泥量很大,含银很富,金银比为1:50左右,金银主要嵌布于褐铁矿中,并以细粒及显微细粒为主。脉石矿物含吸水性矿物约占45％。漫出后矿浆帖稠,体积膨胀,液固分离特别困难,属难处理矿石。经全泥氰化,金、银浸出率A样为93.05％,82.72％,B样为90.55％、73.10％。实验研究的核心是采用炭浆吸附还是锌粉置换的问题。炭浆吸附金、银吸附率为100％及99％。锌粉置换采用技A—700～1000型阴离子絮凝剂,效果非常显著。经对比后,推荐选用全泥氰化—絮凝沉降—锌粉置换流程。
Iron-capped gold and silver ore is characterized by the high oxidation rate of metal minerals, mud content is very large, very rich in silver, silver and silver ratio of about 1:50, mainly embedded in limonite gold and silver, and fine particles And fine-grained-based. Gangue mineral water-absorbing minerals account for about 45%. After the thick pulp paste diffuse, volume expansion, liquid-solid separation is particularly difficult, is difficult to deal with ore. After all muddy cyanidation, the gold and silver leaching rates were 93.05%, 82.72%, B samples were 90.55% and 73.10% respectively. The core of the experimental study is the use of carbon adsorption or zinc powder replacement problem. Carbon adsorption of gold, silver adsorption rate of 100% and 99%. Zinc powder replacement technology A-700 ~ 1000 anionic flocculant, the effect is very significant. After comparison, it is recommended to use full mud cyanide - flocculation settling - zinc powder replacement process.