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 ›› 2019, Vol. 51 ›› Issue (9): 67-71.doi: 10.11962/1006-4990.2018-0590

• 环境·健康·安全 • 上一篇    下一篇

原位中和法脱除锰冶金浸出液中铁铝新过程研究

张贺杰1,2,李平2,陈欣2,王宏岩2,郑诗礼2,张懿2   

  1. 1. 北京科技大学冶金与生态工程学院,北京 100083
    2. 中国科学院过程工程研究所,湿法冶金清洁生产技术国家工程实验室
  • 收稿日期:2019-03-22 出版日期:2019-09-10 发布日期:2020-06-10
  • 作者简介:张贺杰(1995— ),男,硕士研究生;E-mail: zhanghejie163@163.com。
  • 基金资助:
    国家自然科学基金面上项目(51574212)

New process research on removal of Fe and Al from MnSO4 leaching solutions of manganese metallurgy by in situ neutralization precipitation

Zhang Hejie1,2,Li Ping2,Chen Xin2,Wang Hongyan2,Zheng Shili2,Zhang Yi2   

  1. 1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing,Beijng 100083, China
    2. National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology,Institute of Process Engineering,Chinese Academy of Sciences
  • Received:2019-03-22 Online:2019-09-10 Published:2020-06-10

摘要:

在对前期已构建的溶液中铁铝成核和长大过程体系研究的基础上,开发了锰冶金过程硫酸锰浸出液原位中和脱除铁铝的新技术,同步脱除铁铝,将硫酸锰浸出液中的铝铁杂质由现行方法中的氢氧化铝和氢氧化铁直接转变成γ-AlOOH和α-FeOOH,替代现行工艺中采用的中和除铁铝方法,将渣中的锰带损由7%~8%降低到2%~3%,渣的过滤性能提高了50%。该方法没有大幅度改变现行工艺的各项条件,对于现行工业生产扰动小,同时能解决目前渣中锰吸附夹带量高、过滤性能差的问题,在提高锰直收率的同时降低了渣中的锰含量,兼顾环境和经济效益,为中国锰冶金清洁生产技术的推行提供助力。

关键词: 锰冶金, 硫酸锰浸出液, 原位中和, 脱除铁铝, 渣带损

Abstract:

A new technology for Fe and Al removal from MnSO4 leaching solutions of manganese metallurgy by in situ neutralization precipitation was developed to decrease the loss of Mn and improve the filtration performance of Mn-containing residues,based on the pre-established nucleation and growth system of Fe and Al in the solutions.The results showed that the γ-AlOOH and α-FeOOH had been prepared by the new technology instead of conventional Al(OH)3 and Fe(OH)3 obtained from the neutralization process from MnSO4 leaching solutions.Mn loss decreased from 7%~8% to 2%~3% while the filtration rate of Mn-containing residues increased 50%.The technology did not greatly change the various conditions of the current process,and had little disturbance to the current industrial production.The technology also effectively resolved the high Mn contents and bad filtration performance of Mn-containing residues,not only increasing the direct yield of Mn,but also decreasing Mn content of residues.It has environmental and economic benefits and provides assistance for the implementation of China’s manganese metallurgical clean production technology.

Key words: manganese metallurgy, MnSO4 leaching solutions, in situ neutralization precipitation, removal of Fe and Al, slag loss

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