用硫酸从废旧锂电池除铜尾渣中浸出镍、钴动力学
|
摘要
研究了用硫酸从废旧锂电池湿法浸出除铜尾渣中浸出镍、钴动力学,考察了温度、硫酸浓度、液固体积质量比、浸出时间和搅拌速度对镍、钴浸出率的影响。结果表明:在温度80℃、硫酸浓度1.80mol/L、液固体积质量比10∶1、浸出时间5h及搅拌速度900r/min条件下,镍、钴浸出率达85.73%和81.93%;固膜扩散是反应速率控制步骤,镍、钴浸出反应表观活化能分别为11.29、10.02kJ/mol;提高温度、硫酸浓度和液固体积质量比,均可加速镍、钴的浸出,提高镍、钴浸出率。
The leaching kinetics of nickel and cobalt from waste lithium battery using sulfuric acid was studied.The effects of leaching temperature,sulfuric acid concentration,ratio of liquid volume-to-solid mass,leaching time and stirring rate on leaching rate of nickel and cobalt were investigated.The results show that under the conditions of leaching temperature of 80℃and sulfuric acid concentration of 1.80 mol/L,ratio of liquid volume-to-solid mass of 10/1,leaching time of 5 hand stirring rate of900 r/min,the leaching rate of nickel and cobalt can reach 85.73%and 81.93%,respectively.And the orthogonal tests result confirm that the membrane diffusion is the reaction speed controlling step,and the apparent activation energy of leaching reaction is 11.29,10.02 kJ/mol for nickel and cobalt.Increasing temperature,sulfuric acid concentration and ratio of liquid volume-to-solid mass,the leaching reactions of nickel and cobalt can be accelerated,and the leaching of nickel and cobalt can be improved.
The leaching kinetics of nickel and cobalt from waste lithium battery using sulfuric acid was studied.The effects of leaching temperature,sulfuric acid concentration,ratio of liquid volume-to-solid mass,leaching time and stirring rate on leaching rate of nickel and cobalt were investigated.The results show that under the conditions of leaching temperature of 80℃and sulfuric acid concentration of 1.80 mol/L,ratio of liquid volume-to-solid mass of 10/1,leaching time of 5 hand stirring rate of900 r/min,the leaching rate of nickel and cobalt can reach 85.73%and 81.93%,respectively.And the orthogonal tests result confirm that the membrane diffusion is the reaction speed controlling step,and the apparent activation energy of leaching reaction is 11.29,10.02 kJ/mol for nickel and cobalt.Increasing temperature,sulfuric acid concentration and ratio of liquid volume-to-solid mass,the leaching reactions of nickel and cobalt can be accelerated,and the leaching of nickel and cobalt can be improved.
引文
[1]陈少斌,程来星,邹燕飞,等.用硫酸从废锂电池中浸出钴的试验研究[J].湿法冶金,2015,34(1):32-34
[2]张丽霞.从废锂离子电池中回收金属钴和锂[J].湿法冶金,2005,24(4):198.
[3]童伟锋,范兴祥,吴晓峰,等.硫酸化氧化焙烧—水浸法从红土镍矿中提取镍钴[J].有色金属(冶炼部分),2013(7):9-12.
[4]郭学益,李栋,田庆华,等.硫酸熟化—焙烧法从镍红土矿中回收镍和钴动力学研究[J].中南大学学报(自然科学版),2012,43(4):23-27.
[5]肖利,唐杰,郭权文,等.从工业废渣中浸出钴镍试验研究[J].湿法冶金,2017,36(4):267-270.
[6]李洪桂.冶金原理[M].北京:科学出版社,2005:292-293.
[7]李浩然,冯雅丽,罗小兵,等.湿法浸出粘土矿中钒的动力学[J].中南大学学报(自然科学版),2008,39(6):1181-1184.
[8]莫鼎成.冶金动力学[M].长沙:中南大学出版社,1988:293-301.
[9]傅献彩,沈文霞,姚天扬,等.物理化学[M].北京:高等教育出版社,2005:195-197.
[10]李洪桂.浸出过程的理论基础及实践[J].稀有金属与硬质合金,1993,3(4):30-36.
[2]张丽霞.从废锂离子电池中回收金属钴和锂[J].湿法冶金,2005,24(4):198.
[3]童伟锋,范兴祥,吴晓峰,等.硫酸化氧化焙烧—水浸法从红土镍矿中提取镍钴[J].有色金属(冶炼部分),2013(7):9-12.
[4]郭学益,李栋,田庆华,等.硫酸熟化—焙烧法从镍红土矿中回收镍和钴动力学研究[J].中南大学学报(自然科学版),2012,43(4):23-27.
[5]肖利,唐杰,郭权文,等.从工业废渣中浸出钴镍试验研究[J].湿法冶金,2017,36(4):267-270.
[6]李洪桂.冶金原理[M].北京:科学出版社,2005:292-293.
[7]李浩然,冯雅丽,罗小兵,等.湿法浸出粘土矿中钒的动力学[J].中南大学学报(自然科学版),2008,39(6):1181-1184.
[8]莫鼎成.冶金动力学[M].长沙:中南大学出版社,1988:293-301.
[9]傅献彩,沈文霞,姚天扬,等.物理化学[M].北京:高等教育出版社,2005:195-197.
[10]李洪桂.浸出过程的理论基础及实践[J].稀有金属与硬质合金,1993,3(4):30-36.