碱分解钨渣硫酸浸出的正交试验研究  

Orthogonal Experimental Study on Sulfuric Acid Leaching of Alkali-Decomposed Tungsten Slag

作　　者：李祖怡 张勇 郑彬涛 侯志明 龚丹丹 LI Zu-yi;ZHANG Yong;ZHENG Bin-tao;HOU Zhi-ming;GONG Dan-dan(School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;Chongyi Zhangyuan Tungsten Co.,Ltd.,Chongyi 341300,China)

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州341000 [2]崇义章源钨业股份有限公司,江西崇义341300

出　　处：《稀有金属与硬质合金》2023年第1期1-4,共4页Rare Metals and Cemented Carbides

基　　金：江西省自然科学基金项目(20224BAB204037,20212BAB214024);江西省教育厅科学技术研究项目(GJJ190487);大学生创新创业训练项目(202110407033);江西理工大学博士启动项目(jxxjbs19017)。

摘　　要：采用L_(25)(5^(6))正交试验研究了碱分解钨渣硫酸浸出过程的硫酸浓度、液固比、浸出温度、搅拌转速、反应时间、钨渣粒度对钨浸出率的影响,并对试验结果进行了分析。结果表明:影响钨浸出率的因素显著性依次为浸出温度>硫酸浓度>钨渣粒度>液固比>搅拌转速>反应时间。钨的浸出优化条件为浸出温度40℃、硫酸浓度20%、钨渣粒度75~150μm、液固比20∶1、搅拌转速250 r/min、反应时间1.5 h,在此条件下钨渣中钨的浸出率可达91.63%。本研究可为优化碱分解钨渣的硫酸浸出工艺提供参考。The L_(25)(5^(6))orthogonal test was used to study the effects of sulfuric acid concentration,liquid-solid ratio,leaching temperature,stirring speed,reaction time and tungsten slag particle size on the tungsten leaching rate in the sulfuric acid leaching process of alkali-decomposed tungsten slag,and the experimental results were analyzed.The results show that the significant factors affecting the tungsten leaching rate are in the descending order of leaching temperature,sulfuric acid concentration,tungsten slag particle size,liquid-solid ratio,stirring speed and reaction time.The optimum conditions for tungsten leaching are leaching temperature 40℃,sulfuric acid concentration 20%,tungsten slag particle size 75~150μm,liquid-solid ratio 20∶1,stirring speed 250 r/min and reaction time 1.5 h.Under the optimum conditions,the tungsten leaching rate can reach 91.63%.This study can provide a reference for optimizing the sulfuric acid leaching process of alkali-decomposed tungsten slag.

关 键 词：钨渣 碱分解 浸出 硫酸 正交试验 工艺条件 

分 类 号：TF841.1[冶金工程—有色金属冶金]