铜渣中有价金属酸溶出试验研究

发布时间：2018-01-14 21:33

  本文关键词：铜渣中有价金属酸溶出试验研究　出处：《上海金属》2016年06期 　论文类型：期刊论文

  更多相关文章： 铜渣 有价金属 硫酸溶出 溶出率

【摘要】：利用硫酸溶出铜渣中的有价元素,研究了常压下硫酸体积分数、浸出时间、浸出温度和硫酸用量(固/液比)对铜渣中Fe、Cu、Co和Ni的溶出率及溶出速率的影响。结果表明:随着硫酸体积分数的升高,促进了硅酸凝胶在酸液中的形成,吸附浸出液中的金属离子,导致了溶液中各金属的溶出率有所降低;浸出温度的升高有助于提高铜渣中金属元素的溶出率。通过试验研究获得了铜渣中有价金属浸出的最佳条件:硫酸体积分数20%,硫酸用量为理论用量的7倍,浸出温度90℃,浸出时间2 h,此条件下Fe、Cu、Co和Ni的溶出率分别达到94.5%、69.7%、73.9%、36.4%。
[Abstract]:The effect of sulfuric acid volume fraction, leaching time, leaching temperature and the amount of sulfuric acid (solid / liquid ratio) on FeCU in copper slag was studied by using valuable elements in copper slag dissolved by sulfuric acid. The results showed that with the increase of sulfuric acid volume fraction, the formation of silicic acid gel in acid solution and the adsorption of metal ions in leaching solution were promoted. The dissolution rate of each metal in the solution was decreased. The increase of leaching temperature is helpful to improve the dissolution rate of metal elements in copper slag. The optimum conditions of leaching valuable metal in copper slag are obtained by experiment: sulfuric acid volume fraction 20%. The leaching temperature was 90 鈩，

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