(廣東省稀有金屬研究所 廣東省稀土開發(fā)及應(yīng)用重點實驗室，廣州 510650)
摘 要: 針對鐵礬渣的危害性及處理現(xiàn)狀，結(jié)合其物相特點，提出“焙燒-水浸法”從含銦鐵礬渣中回收鋅、銦的清潔工藝，系統(tǒng)研究焙燒過程物相變化及反應(yīng)機理，確定最佳焙燒條件。考察浸出時間、溫度、固液比對浸出的影響規(guī)律。結(jié)果表明：在650 ℃焙燒2 h，可使含銦鐵礬渣分解，同時Zn和In生成易于浸出的ZnSO4和In2(SO4)3，鐵以難浸出Fe2O3形式存在。在常溫下，控制液固比5:1，用水浸出焙砂 0.5 h，Zn和In浸出率分別為72.02%和78.73%，F(xiàn)e浸出率僅為4.42%，而Ag和Pb進入渣中富集回收。
關(guān)鍵字: 含銦鐵礬渣；焙燒；水浸；Zn；In
（Guangdong Province Research Institute of Rare Metal, Guangdong Province Key Laboratory of Rare Earth Development and Application, Guangzhou 510650, China）
Abstract:Based on the perniciousness and dispose status of ammonium jarosite residue and its phase characteristics, a new process recovering Zn and In from ammonium jarosite residue bearing indium by roasting - water leaching method was put forward. The phase transformation and reaction mechanism of roasting process were investigated, and the best roasting conditions were determined. The effect laws of leaching time, temperature and solid-liquid ratio on leaching were investigated. The results show that, after roasting of jarosite at 650 ℃ for 2 h, ammonium jarosite bearing indium is decomposed into Fe2O3, ZnSO4 and In2(SO4)3. The roasted jarosite residue is leached by water at room temperature for 0.5 h. The leaching rate of Zn and In are 72.02% and 78.73%. The leaching rate of Fe is only 4.42%, Ag and Pb are enriched into the residue.
Key words: ammonium jarosite residue bearing indium; roasting; water leaching; Zn; In
