介绍了废锂电池的预处理以及从中回收有价金属相关工艺的研究情况,重点分析了火法冶金、湿法冶金、火法焙烧—湿法冶金联合法及生物冶金的主要过程、原理及优缺点,并对废锂电池回收行业进行了展望。火法冶金对原料普适性强、处理能力大...介绍了废锂电池的预处理以及从中回收有价金属相关工艺的研究情况,重点分析了火法冶金、湿法冶金、火法焙烧—湿法冶金联合法及生物冶金的主要过程、原理及优缺点,并对废锂电池回收行业进行了展望。火法冶金对原料普适性强、处理能力大,能充分利用废电池内部的还原性与蕴含的能量;湿法冶金容易实现金属的高浸出率,采取H 3 PO 4或氨等试剂能实现个别金属的优先提取;生物冶金在废锂电池应用上具有一定挑战性,主要是废锂电池含有毒电解质,严重影响微生物活性;火法焙烧—湿法冶金联合法综合了火法冶金及湿法冶金的优点,且能实现个别金属的优先提取,在未来具有潜在的应用前景。展开更多
The neutral zinc sulfate solution obtained from hydrometallurgical process of Angouran zinc concentrate has cadmium, nickel and cobalt impurities, that must be purified before electrowinning. Therefore, cadmium and ni...The neutral zinc sulfate solution obtained from hydrometallurgical process of Angouran zinc concentrate has cadmium, nickel and cobalt impurities, that must be purified before electrowinning. Therefore, cadmium and nickel are usually cemented out by addition of zinc dust and remained nickel and cobalt cemented out at second stage with zinc powder and arsenic trioxide. In this research, a new approach is described for determination of effective parameters and optimization of zinc electrolyte hot purification process using statistical design of experiments. The Taguchi method based on orthogonal array design(OAD) has been used to arrange the experimental runs. The experimental conditions involved in the work are as follows: the temperature range of 70-90 ℃ for reaction temperature(T), 30-90 min for reaction time(t), 2-4 g/L for zinc powder mass concentration(M), one to five series for zinc dust particle size distributions(S1-S5), and 0.1-0.5 g/L(C) for arsenic trioxide mass concentration. Optimum conditions for hot purification obtained in this work are T4(85 ℃), t4=75 min, M4=3.5 g/L, S4(Serie 4), and C2=0.2 g/L.展开更多
文摘介绍了废锂电池的预处理以及从中回收有价金属相关工艺的研究情况,重点分析了火法冶金、湿法冶金、火法焙烧—湿法冶金联合法及生物冶金的主要过程、原理及优缺点,并对废锂电池回收行业进行了展望。火法冶金对原料普适性强、处理能力大,能充分利用废电池内部的还原性与蕴含的能量;湿法冶金容易实现金属的高浸出率,采取H 3 PO 4或氨等试剂能实现个别金属的优先提取;生物冶金在废锂电池应用上具有一定挑战性,主要是废锂电池含有毒电解质,严重影响微生物活性;火法焙烧—湿法冶金联合法综合了火法冶金及湿法冶金的优点,且能实现个别金属的优先提取,在未来具有潜在的应用前景。
文摘The neutral zinc sulfate solution obtained from hydrometallurgical process of Angouran zinc concentrate has cadmium, nickel and cobalt impurities, that must be purified before electrowinning. Therefore, cadmium and nickel are usually cemented out by addition of zinc dust and remained nickel and cobalt cemented out at second stage with zinc powder and arsenic trioxide. In this research, a new approach is described for determination of effective parameters and optimization of zinc electrolyte hot purification process using statistical design of experiments. The Taguchi method based on orthogonal array design(OAD) has been used to arrange the experimental runs. The experimental conditions involved in the work are as follows: the temperature range of 70-90 ℃ for reaction temperature(T), 30-90 min for reaction time(t), 2-4 g/L for zinc powder mass concentration(M), one to five series for zinc dust particle size distributions(S1-S5), and 0.1-0.5 g/L(C) for arsenic trioxide mass concentration. Optimum conditions for hot purification obtained in this work are T4(85 ℃), t4=75 min, M4=3.5 g/L, S4(Serie 4), and C2=0.2 g/L.