發(fā)布時(shí)間：2018-04-29 21:41

  本文選題：鉛陽極泥 + Te�。� 參考：《稀有金屬與硬質(zhì)合金》2016年06期

【摘要】：對(duì)鉛陽極泥進(jìn)行預(yù)氧化、浸出和還原沉淀處理回收Te,結(jié)果表明,優(yōu)化的Te回收工藝為自然堆放氧化處理-硫酸+氯化鈉+氯酸鈉體系浸出-控電位亞硫酸鈉沉Te。鉛陽極泥經(jīng)過自然堆放氧化處理4d后,在3 mol/L硫酸+3mol/L氯化鈉+20%氯酸鈉體系、L/S=5∶1、反應(yīng)溫度80℃、反應(yīng)時(shí)間4h的條件下攪拌浸出,Te浸出率達(dá)到了92.15%,Cu及其他有價(jià)元素的浸出率均在90%以上,Ag、Pb則留在渣中。對(duì)浸出液進(jìn)行控電位亞硫酸鈉沉Te,控制電位在0.342~0.568V之間,以兩倍理論量的亞硫酸鈉作為還原劑,Te還原率達(dá)92.57%,Cu及其他有價(jià)元素留在溶液中進(jìn)行下一步回收。采用該優(yōu)化工藝從鉛陽極泥中回收Te至粗Te渣,Te綜合回收率可達(dá)85%以上。
[Abstract]:Lead anode slime was preoxidized, leached and reduced precipitated to recover Te. the results showed that the optimized recovery process of Te was natural heap oxidation, sodium chlorate sulfate leaching and precipitation of sodium sulfite with controlled potential. The lead anode mud was treated by natural stacking and oxidation for 4 days, and the reaction temperature was 80 鈩，

本文編號(hào)：1821681