本文關(guān)鍵詞：銅渣中有價(jià)金屬酸溶出試驗(yàn)研究　出處：《上海金屬》2016年06期 　論文類型：期刊論文

  更多相關(guān)文章： 銅渣 有價(jià)金屬 硫酸溶出 溶出率

【摘要】：利用硫酸溶出銅渣中的有價(jià)元素,研究了常壓下硫酸體積分?jǐn)?shù)、浸出時(shí)間、浸出溫度和硫酸用量(固/液比)對銅渣中Fe、Cu、Co和Ni的溶出率及溶出速率的影響。結(jié)果表明:隨著硫酸體積分?jǐn)?shù)的升高,促進(jìn)了硅酸凝膠在酸液中的形成,吸附浸出液中的金屬離子,導(dǎo)致了溶液中各金屬的溶出率有所降低;浸出溫度的升高有助于提高銅渣中金屬元素的溶出率。通過試驗(yàn)研究獲得了銅渣中有價(jià)金屬浸出的最佳條件:硫酸體積分?jǐn)?shù)20%,硫酸用量為理論用量的7倍,浸出溫度90℃,浸出時(shí)間2 h,此條件下Fe、Cu、Co和Ni的溶出率分別達(dá)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，

本文編號：1425429