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 ›› 2013, Vol. 45 ›› Issue (2): 17-.

• 论文 • 上一篇    下一篇

硫酸锰室温固相球磨制备四氧化三锰

马玉文1,冯雅丽1,李浩然2   

  1. 1.北京科技大学土木与环境工程学院,北京100083;2.中国科学院过程工程研究所生化工程国家重点实验室
  • 出版日期:2013-02-10 发布日期:2013-02-21

Preparation of Mn3O4 from manganese sulfate by solid-state ball milling reaction at room temperature

Ma Yuwen1,Feng Yali1,Li Haoran2   

  1. 1.School of Civil and Environmental Engineering,Beijing University of Science and Technology,Beijing 100083,China;
    2.State Key Laboratory of Biochemical Engineering,Institute of Process Engineering,Chinese Academy of Sciences
  • Online:2013-02-10 Published:2013-02-21

摘要: 利用软锰矿吸收硫酸镁热解尾气二氧化硫制得硫酸锰,再与碳酸氢铵室温下固相球磨反应,制备出前躯体碳酸锰,经热分解获得四氧化三锰。分别考察了物料比、球磨时间、球料比等因素对硫酸锰转化率的影响,采用XRD对产物进行了分析。结果表明,在n(碳酸氢铵)∶n(硫酸锰)=3.5∶1、球磨时间为40 min、球料质量比为5∶1时,硫酸锰的转化率可达99.8%,将固相产物在1 000 ℃热解1 h后所制备的四氧化三锰纯度为99.9%。该工艺操作简单,产品纯度高,成本低,为硫酸锰制备四氧化三锰提供了新的途径。

关键词: 硫酸锰, 碳酸锰, 四氧化三锰, 固相球磨反应

Abstract: Manganese sulfate was prepared by reaction between pyrolusite and sulfur oxide from the pyrolysis of magnesium sulfate.Mn3O4 can be prepared by pyrolysing the precursor MnCO3.The precursor was synthesized by solid-state ball milling reaction between NH4HCO3 and MnSO4·H2O at room temperature.Effects of materials mix ratio,milling time,and ball-feed mass ratio on the conversion of manganese sulfate were investigated respectively.The products were analyzed by XRD.Results showed that the conversion rate of MnSO4·H2O could reach 99.8% under the conditions of mix ratio 3.5∶1(amount-of-substance ratio of NH4HCO3 to MnSO4·H2O),milling time 40 min,and ball-feed mass ratio 5∶1.The Mn3O4,whose purity was 99.9%,can be prepared by pyrolysing manganese carbonate at 1 000 ℃ for 1 h.The process has the advantages of simple in operation,high product purity,and low cost,and it can provide a new route for the preparation Mn3O4 from MnSO4·H2O.

Key words: manganese sulfate, manganese carbonate, trimanganese tetroxide, solid-state ball milling reaction

中图分类号: