摘要
研究了砷碱渣中锑和砷的分离及过程动力学。采用正交试验考察了砷碱渣水热浸出时固液比、搅拌速度、浸出温度以及时间对砷浸出率的影响。结果表明,浸出砷的最佳条件为:固液比1∶4、浸出温度90℃、搅拌速度600r/min、浸出时间60min。砷浸出过程动力学方程为1-(1-x)1/3=Mkc/br0ρt,反应活化能666.57kJ/mol,属于化学反应控制。
The leaching kinetics and separation of antimony and arsenic from arsenic alkali residue were studied.The effects of solid/liquid ratio,stirring velocity,temperature and time on arsenic leaching rate were investigated with orthogonal test.The results show that the optimum conditions include the ratio of solid to liquid of 1∶4,temperature of 90 ℃,stirring velocity of 600 r/min,and time of 60 min.The kinetics equation can be expressed as 1-（1-x）1/3=Mkc/br0ρt.The activation energy for arsenic leaching is 666.57 kJ/mol based on a chemical reaction-controlled process.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2012年第3期1-3,17,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
国家高技术研究发展计划项目(2010AA065204)
江西省自然科学基金资助项目(2010GZH0111)
关键词
砷碱渣
锑砷分离
浸出动力学
活化能
arsenic alkali residue
separation of antimony and arsenic
leaching kinetics
activation energy
