无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2021, Vol. 53 ›› Issue (1): 82-86.doi: 10.11962/1006-4990.2020-0074

• 环境·健康·安全 • 上一篇    下一篇

电解锰渣盐酸浸取钙的动力学研究

杨晓红1(),薛希仕2,张露露1,常军1   

  1. 1.铜仁学院材料与化学工程学院,贵州铜仁 554300
    2.贵州开盛钾业科技有限公司
  • 收稿日期:2020-07-24 出版日期:2021-01-10 发布日期:2021-01-08
  • 通讯作者: 杨晓红
  • 作者简介:杨晓红(1987— ),女,硕士,副教授,主要研究方向为矿产资源及固体废物的综合利用;E-mail: yangxiaohong201101@163.com
  • 基金资助:
    贵州省科技合作项目(黔科合LH字[2016]7295号);贵州省科技计划项目(LH[2017]7312);贵州省基础研究计划项目([2019]1311)

Kinetics study of calcium leaching from electrolytic manganese residue by hydrochloric acid

Yang Xiaohong1(),Xue Xishi2,Zhang Lulu1,Chang Jun1   

  1. 1. School of Materials and Chemical Engineering,Tongren University,Tongren 554300,China
    2. Guizhou Kaisheng Potassium Co.,Ltd.
  • Received:2020-07-24 Online:2021-01-10 Published:2021-01-08
  • Contact: Yang Xiaohong

摘要:

以电解锰加工过程中产生的酸性废渣为原料,以盐酸为浸取剂,对电解锰渣中的钙进行浸取实验研究。结果表明:盐酸浓度为3 mol/L、液固体积质量比为6 mL/g、反应温度为80 ℃、反应时间为60 min的条件下,钙的浸取率为94.2%。酸浸过程的动力学分析表明,锰渣中钙的酸浸反应过程符合收缩核模型,受化学反应控制,其反应的表观活化能Ea为43.96 kJ/mol,反应级数为0.872 5。

关键词: 电解锰渣, 动力学, 盐酸浸取, 表观活化能, 指前因子

Abstract:

The acidic slag was used as raw material which produced in the process of electrolytic manganese processing,with hydrochloric acid as the leaching agent,a leaching process of calcium in electrolytic manganese residue was conducted.The results showed that under the conditions as follows:hydrochloric acid concentration of 3 mol/L,the volume-mass ratio of liquid to solid of 6 mL/g,the acid leaching temperature of 80 ℃ and reaction time of 60 min,the leaching rate of Ca reached 94.2%.The kinetic analysis of the acid leaching process indicated that the acid leaching process of calcium from electrolytic manganese residue was controlled by chemical reactions,following shrinking core mode with apparent activation energy of reaction of 43.96 kJ/mol and the reaction order of 0.872 5.

Key words: electrolytic manganese residue, kinetics, hydrochloric acid leaching, apparent activation energy, preexp-ontial factor

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