热酸浸出富铟锌浸渣提取锌铟的研究  

RECOVERY ZINC AND INDIUM FROM INDIUM-BEARING ZINC RESIDUE BY HOT-ACID LEACHING

作　　者：朱北平 邓志敢[2] 张帆[2] 魏昶[2] 

机构地区：[1]云南华联锌铟股份有限公司,云南文山663701 [2]昆明理工大学冶金与能源工程学院,昆明650093

出　　处：《矿冶》2016年第3期45-49,共5页Mining And Metallurgy

基　　金：国家自然科学基金资助(51474117;51564030)

摘　　要：以富含铟的湿法炼锌中性浸出渣为研究对象,研究了热酸浸出过程中锌、铟等有价金属的溶解行为。结果表明,随着锌浸渣的溶解,浸出液中Fe3+浓度及氧化还原电位不断升高,抑制了铁酸锌的溶解,在第一、二段浸出条件分别为:反应温度90℃、液固比10∶1、浸出时间4 h;初始硫酸浓度160 g/L、反应温度90℃、液固比10 m L/g、浸出时间4 h的试验条件下,采用两段逆流浸出工艺处理该渣,锌、铟的浸出率分别为96.53%、94.85%。The treatment of indium-bearing zinc residue by hot-acid leaching was studied. By dissolving zinc ferrite, Fe^3＋ was released. The concentration of Fe^3＋ and redox potential of solution was increased with increasing reaction time. The high Fe^3＋ concentration and redox potential of solution were adverse to the dissolution of zinc ferrite. The leaching behavior of zinc and indium was analyzed during the hot-acid leaching. The leaching rate of zinc and indium were 96.53% and 94. 85% , respectively, by a two-stage adverse current leaching. The optimum parameters of the first stage are temperature 90 ℃, liquid-to-solid ratio 10：1 and leach time 4 h; The optimum parameters of the second stage are initial sulfuric concentration 160 g/L, temperature 90℃ , liquid-to-solid ratio 10 mL/g and leach time 4 h.

关 键 词：含铟锌浸渣 热酸浸出 锌 铟 

分 类 号：TF813[冶金工程—有色金属冶金] TF843.1