摘要
针对云南某氧化锌矿,采用硫酸作为浸出剂进行了搅拌浸出试验,探讨了浸出温度、加酸量、液固比以及反应时间对锌浸出率的影响,结果表明最佳的反应条件为温度70°C,加酸量120 g/L,液固比5∶1,反应时间90 min,此时锌的浸出率能达到85.37%。氧化锌矿硫酸浸出过程中的反应符合缩核模型,受化学反应控制,反应的表观活化能为13.35 kJ/mol。
The agitation leaching test is carried out for one zinc oxide ore in Yunnan that suphuric acid is adopted as the leaching agent,it is discussed the effect of leaching temperature,acid addition amount,liquid-solid ratio and the reaction time on zinc leaching rate,the results show,the optimal reaction conditions are:the temperature is 70°C,the acid addition amount is 120 g/L,the liquid-solid ratio is 5∶1,the reaction time is 90 min,with all the above mentioned conditions,the leaching rate of zinc can reach to 85.37%.The reaction of zinc oxide ore in sulphuric acid leaching process conform to the shrinking core model,which is controlled by chemical reaction,the apparent activation energy of the reaction is 13.35 kJ/mol.
作者
卢佐菊
梅相位
包崇军
周先超
LU Zuo-ju;MEI Xiang-wei;BAO Chong-jun;ZHOU Xian-chao(Yunnan Yongchang Lead&Zinc Co.,Ltd.,Baoshan,Yunnan 678307,China;Yunnan Metallurgical Research Institute Company Limited,Kunming,Yunnan 650031,China)
出处
《云南冶金》
2020年第5期51-54,共4页
Yunnan Metallurgy
基金
云南省科技厅科技人才和平台计划(2017HC031)
云南省基础研究计划项目(2017FA031)。
关键词
氧化锌矿
硫酸浸出
动力学
缩核模型
zinc oxide ore
sulfuric acid leaching
kinetics
shrinking core model
