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TREATMENT OF ZINC LEACHED SLAG AND SECONDARILY LEACHED RESIDUES FROM SAID SLAG
TREATMENT OF ZINC LEACHED SLAG AND SECONDARILY LEACHED RESIDUES FROM SAID SLAG
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机译：锌渣的锌浸出渣和二次浸出渣的处理
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摘要
PURPOSE:To recover zinc-contg. silver concentrate and lead sulfate concentrate wherein silver or lead is concd. effectively by employing a nonreduction melting method for zinc leached slag, melting zinc ferrite in the melting stage thereof completely and further adapting a flotation method for secondarily leached residues. CONSTITUTION:Leached ore slurry of 35-60g/l free sulfuric acid, and =35g/l ferric ion obtd. by mixing of zinc leached slag and sulfuric acid of 75-80 deg.C is subjected to solid-liquid sepn. at=80 deg.C. The separated liquid contg. zinc and iron is supplied to a zinc recovering system. The spigots are mixed with concd. sulfuric acid to prepare ore slurry of =100g/l free sulfuirc acid and =30g/l ferric ions. The ore slurry is subjected to solid-liquid sepn. to obtain spigots as secondarily elached residues and separated sulfuic acid soln. The spigots are made into ore slurry of =50g/l free sulfuric acid, =30g/l zinc ions and =15g/ l ferric ions by repulping; then the ore slurry is subjected to flotation, whereby silver concentrate contg. zinc as floating ore and tailing are obtained. Acetic acid salts of C12-20 primary amines are added to the tailing and the tailing is floated by flotation, whereby lead sulfate concentrate is obtained.
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机译：目的：恢复含锌量。银精矿和硫酸铅精矿，其中含有银或铅。通过对锌浸出炉渣采用非还原熔融法，在其熔融阶段将铁素体锌完全熔融，并进一步采用浮选法对二次浸出残渣进行改进，可以有效地解决这一问题。组成：含35-60g / l游离硫酸和<= 35g / l三价铁离子的浸出矿浆。通过将锌浸出的渣与75-80℃的硫酸混合而进行固液分离。在<= 80℃下分离的液体（续）。锌和铁供应到锌回收系统。插头与浓缩混合。用硫酸制备大于等于100 g / l的游离亚硫酸和小于等于30 g / l的铁离子的矿浆。使矿浆经受固液分离。以获得凸出物作为二次洗脱的残留物并分离出硫酸溶液。通过重新制浆将栓塞制成≤50g/ l的游离硫酸，≤30g/ l的锌离子和≤15g/ l的铁离子的矿浆;然后将矿浆进行浮选，从而浓缩银精矿。获得锌作为浮选矿石和尾矿。将C12-20伯胺的乙酸盐添加到尾矿中，并通过浮选使尾矿漂浮，从而获得硫酸铅浓缩物。
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