东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (2): 241-244.DOI: 10.12068/j.issn.1005-3026.2014.02.020

• 材料与冶金 • 上一篇    下一篇

FeS2-MnO2-H2SO4浸出软锰矿反应

冯雅丽1,张旭1,李浩然2,杨志超1   

  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, 北京100190)
  • 收稿日期:2013-05-06 修回日期:2013-05-06 出版日期:2014-02-15 发布日期:2013-11-22
  • 通讯作者: 冯雅丽
  • 作者简介:冯雅丽(1967-),女,北京人,北京科技大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(21176242,21176026);中央高校基本科研业务费专项资金资助项目(FRT-TP-09-002B);国家科技支撑计划项目(2012BAB14B05,2012AA062401);中国大洋矿产资源研究开发计划项目(DY125-15-T-08).

Pyrolusite Leaching Reactions in FeS2MnO2H2SO4 System

FENG Yali1, ZHANG Xu1, LI Haoran2, YANG Zhichao1   

  1. 1. Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, China; 2. National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
  • Received:2013-05-06 Revised:2013-05-06 Online:2014-02-15 Published:2013-11-22
  • Contact: LI Haoran
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摘要: 针对FeS2-MnO2-H2SO4浸出软锰矿的浸出过程进行了研究,考察了反应过程中FeS2反应方式对MnO2浸出的影响.研究过程中分别对矿浆中的Mn2+,Fe2+和Fe3+质量浓度,以及矿浆电位的变化进行了监测,并对浸出过程进行了阶段的划分与分析.通过对浸出过程中不同反应阶段的分析,发现不同反应阶段过程中Mn2+与Fe3+浸出速率的比值是不同的,说明在不同阶段存在着不同的反应方式,导致FeS2的利用率在不同阶段存在明显差异.同时,对矿浆电位的监测表明,高电位有利于FeS2浸出Fe2+,从而加快了MnO2的浸出速率.

关键词: 软锰矿, 黄铁矿, 浸出率, 浸出速率, 反应过程

Abstract: The process of pyrolusite leaching in FeS2MnO2H2SO4 system and the effect of FeS2 reaction pattern on leaching efficiency of MnO2 were experimentally studied. The concentrations of Mn2+,Fe2+,Fe3+ and pulp potential were monitored, and the process was divided into some phases and then analyzed. The results show that the leaching rate ratio of Mn2+ to Fe3+ is different in different phases, which shows that different reactions occurred in the pulp in different phases, leading to obvious difference in the utilization ratio of pyrite. The monitoring of pulp potential shows that high potential is favorable to the leaching of pyrite and also speeding up the leaching rate of MnO2.

Key words: pyrolusite, pyrite, leaching efficiency, leaching rate, reaction process

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