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有色金属工程:2021,(4):-
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酒石酸盐浸出氧化锌烟尘提锌实验研究
马爱元, 李妍研, 李明旭, 郑雪梅
(六盘水师范学院化学与材料工程学院)
Zinc extraction from zinc oxide dust by tartrate
Ma Aiyuan, LI Yanyan, LI Mingxu, ZHENG Xuemei
(Liupanshui Normal University)
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投稿时间:2020-11-08    修订日期:2020-11-16
中文摘要: 开展了酒石酸盐强化氧化锌烟尘回收锌工艺实验研究,分别考察了NH3 - H2O、NH3- (NH4)2O6C4H4 - H2O、NH3 - C4H6O6 - H2O、NH3 - C4H8Na2O8- H2O及(NH4)2O6C4H4 - H2O体系对锌浸出率的影响,研究表明,NH3 - C4H6O6 - H2O体系浸出氧化锌烟尘效果较佳。进一步研究了NH3 - C4H6O6 - H2O体系下酒石酸浓度、浸出时间、搅拌速度等因素对锌浸出率的影响,研究结果显示:控制酒石酸浓度为0.7 mol/L,氨水浓度为5 mol/L,浸出时间为40 min,搅拌速度400 r/min,液固比为5:1,浸出温度为25 ℃条件下,锌浸出率达到76.59 %,其中酒石酸浓度、时间、搅拌速度、液固比对锌浸出率的影响显著;X射线衍射、红外光谱分析表明NH3 - C4H6O6 - H2O体系可实现ZnO的配位溶出,ZnS在酒石酸及酒石酸盐的氨性体系下难以溶出。
Abstract:An experimental study was carried out on the extraction process of zinc oxide dust with tartarate. The effects of NH3 - H2O、NH3- (NH4)2O6C4H4 - H2O、NH3 - C4H6O6 - H2O、NH3 - C4H8Na2O8- H2O and (NH4)2O6C4H4 - H2O systems on the zinc leaching rate were investigated, respectively. The results showed that the extraction effect of NH3 - C4H6O6 - H2O system was better. The influences of tartaric acid concentration, leaching time and stirring speed on the zinc leaching rate under the NH3 - C4H6O6 - H2O system were further studied. The results showed that the zinc leaching rate reached 76.59% under the condition: the concentration of tartaric acid was controlled at 0.7mol /L, the concentration of ammonia water was 5 mol/L, the leaching time was 40 min, the stirring speed was 400 r/min, the liquid-solid ratio was 5:1, and the leaching temperature was 25 ℃. The concentration of tartaric acid, time, stirring speed and the ratio of liquid to solid were significantly affected for the zinc leaching rate. X-ray diffraction (XRD) and FT-IR spectrum analysis showed that the coordination dissolution of ZnO could be realized in NH3 - C4H6O6 - H2O system, and ZnS was difficult to be dissolved in the ammoniacal system of tartaric acid and tartarate.
文章编号:     中图分类号:TF813    文献标志码:
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马爱元,李妍研,李明旭,郑雪梅.酒石酸盐浸出氧化锌烟尘提锌实验研究[J].有色金属工程,2021,(4):.

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