无机盐工业

无机盐工业 ›› 2021, Vol. 53 ›› Issue (2): 66-70.doi: 10.11962/1006-4990.2020-0172

• 环境·健康·安全 • 上一篇    下一篇

电解锰渣中锰组分的粉磨浸取工艺研究

李涛1(),马国华2   

  1. 1.成都大学,四川省粉末冶金工程技术研究中心,四川成都 610106
    2.西南科技大学,矿物材料及应用研究所
  • 收稿日期:2020-08-19 出版日期:2021-02-10 发布日期:2021-02-06
  • 作者简介:李涛(1974— ),男,博士,副教授,从事无机非金属材料和功能材料的研究;E-mail: 547677025@qq.com
  • 基金资助:
    材料腐蚀与防护四川省重点实验室基金项目(2017CL20);成都大学博士基金项目(208191913)

Research on milling and leaching process of manganese in electrolytic manganese slag

Li Tao1(),Ma Guohua2   

  1. 1. Sichuan Province Engineering Center for Powder Metallurgy,Chengdu University,Chengdu 610106,China
    2. Institute of Mineral Materials and Application,Southwest University of Science and Technology
  • Received:2020-08-19 Online:2021-02-10 Published:2021-02-06

摘要:

为促进电解锰渣的资源化综合利用,减少锰资源的浪费,以电解锰渣为原料,深入研究粉磨浸取工艺条件对锰元素浸取效率的影响。采用XRD、SEM、XRF以及AAS等手段检测分析样品的物相、成分、锰含量等属性。结果表明:二次粉磨可显著提高锰渣粉体中细粉的含量以及细粉中锰的含量。锰渣粉体细度和表面积的增加,加快了锰渣中锰矿颗粒的浸取反应速度,提高了锰的浸取率。浸取时间和浸取温度均显著影响了锰的浸取率,其中温度的影响更为重要。适宜的浸取反应温度为70~85 ℃。当反应温度为85 ℃、反应时间为1 h时,锰的浸取率可达97.15%。

关键词: 电解锰渣, 锰元素, 粉磨, 浸取

Abstract:

In order to promote the comprehensive utilization of electrolytic manganese slag and reduce the waste of manganese resources,using electrolytic manganese slag as raw material,the influence of milling and leaching process conditions on the leaching efficiency of manganese element was researched.The methods of XRD,SEM,XRF and AAS were used to test and analyze the phase,composition and manganese content of manganese slag samples.Results showed that the content of fine particles and the content of manganese in the fine particles were obviously increased via the secondary milling process of manganese slag.Due to the increase of fineness and surface area,the reaction speed of acid leaching of manganese mineral particles in manganese slag was accelerated and the leaching rate was increased.The leaching rate of manganese was obviously affected by time and temperature,but the influence of temperature was more important.The suitable temperature of leaching reaction should be in the range of 70~85 ℃.The leaching rate of manganese was 97.15% when the reaction tempera-ture was 85 ℃ and the time was 1 h.

Key words: electrolytic manganese slag, manganese element, milling, leaching

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