详细信息
氟化锰脱除硫酸锰溶液中钙镁的工艺条件及其动力学研究 被引量:1
Process Conditions and Kinetics of Removing Calcium and Magnesium from Manganese Sulfate Solution by Manganese Fluoride
文献类型:期刊文献
中文题名:氟化锰脱除硫酸锰溶液中钙镁的工艺条件及其动力学研究
英文题名:Process Conditions and Kinetics of Removing Calcium and Magnesium from Manganese Sulfate Solution by Manganese Fluoride
作者:裴正清 王家伟 王海峰 杨春元 周兴杰 郑可欣 鲁菊 马德华 路坊海
第一作者:裴正清
机构:[1]贵州大学材料与冶金学院,贵州贵阳550025;[2]贵州省冶金工程与过程节能重点实验室,贵州贵阳550025;[3]电池用锰材料工程技术研究中心,贵州铜仁554300;[4]贵州理工学院材料新能源工程学院,贵州贵阳550003
第一机构:贵州大学材料与冶金学院,贵州贵阳550025
年份:2024
卷号:44
期号:1
起止页码:111-115
中文期刊名:矿冶工程
外文期刊名:Mining and Metallurgical Engineering
收录:CSTPCD;;北大核心:【北大核心2023】;
基金:铜市科研(2021)13号;黔科合重大专项[2022]003;黔科合支撑[2022]重点020;黔科合支撑[2023]一般243。
语种:中文
中文关键词:硫酸锰溶液;除钙;除镁;钙镁;氟化锰;沉淀;工艺条件;动力学
外文关键词:manganese sulfate solution;calcium removal;magnesium removal;calcium and magnesium;manganese fluoride;precipitation;process conditions;kinetics
摘要:以氟化锰为脱除剂,通过单因素实验研究氟化锰过量系数、溶液pH值、反应温度以及反应时间对硫酸锰溶液中钙镁脱除率的影响。在氟化锰过量系数2.0、溶液pH=5、反应温度85℃、反应时间80 min的优化工艺条件下,钙和镁脱除率分别为97.06%和95.48%。在此基础上进行了动力学研究,硫酸锰溶液中钙和镁的沉淀反应均符合Avrami方程,其表观活化能分别为48.01 kJ/mol和53.23 kJ/mol,表面化学反应是影响钙镁沉淀反应速率的限制性环节。
The effects of excess coefficient of manganese fluoride,pH value of solution,reaction temperature and reaction time on the removal rate of calcium and magnesium from manganese sulfate solution were studied by performing single factor experiment with manganese fluoride as a removal agent.Under the optimum conditions,including an excess coefficient of manganese fluoride of 2.0,pH of 5,reaction temperature of 85℃and reaction time of 80 min,the removal rates of calcium and magnesium can reach 97.06%and 95.48%,respectively.The kinetic study on this basis shows that the precipitation reactions of both calcium and magnesium in manganese sulfate solution conform to the Avrami equation,with apparent activation energies of 48.01 kJ/mol and 53.23 kJ/mol,respectively.The surface reaction is a factor to limit the precipitation rates of calcium and magnesium.
参考文献:
正在载入数据...