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锰铁冶炼烟尘灰中锰锌的浸出实验研究

杨逢时,苏毅,李国斌,胡亮   

  1. 昆明理工大学化工学院,云南 昆明 650500
  • 出版日期:2014-05-05 发布日期:2014-05-05

Experimental study on manganese and zinc leaching from ferromanganese smelting dust

YANG Fengshi,SU Yi,LI Guobin,HU Liang   

  1. Faculty of Chemical Engineering,Kunming University of Science and Technology,Kunming 650500,Yunnan,China
  • Online:2014-05-05 Published:2014-05-05

摘要: 以锰铁冶炼烟尘灰为原料,FeSO4?7H2O为还原剂,经硫酸浸出,使锰及锌元素以Mn2+、Zn2+形式进入溶液中,分离提取锰、锌元素。研究表明,浸出的最佳工艺条件为:H2SO4质量分数为20%,反应时间为4h,反应温度为90℃,液固比为5∶1,还原剂FeSO4?7H2O加入量为75g,搅拌速率为300r/min。锰浸出率可达96.76%,锌浸出率为84.88%。

关键词: 锰铁冶炼烟尘灰, 硫酸, 锰, 锌, 浸取, 反应, 溶液, 锰铁冶炼烟尘灰, 硫酸, 锰, 锌, 浸取

Abstract: With FeSO4?7H2O as a reducing agent,manganese and zinc in ferromanganese smelting dust ash were leached in the form of Mn2+,Zn2+ by sulfuric acid. The optimal leaching condition was as follows:the concentration of H2SO4 was 20%,reaction time was 4 hours,reaction temperature was 90℃,liquid-solid ratio was 5∶1,dosage of FeSO4?7H2O was 75g,and stirring rate was 300 r/min. The highest leaching rate of manganese reached 96.76% and that of zinc was 84.88%.

Key words: ferromanganese smelting dust, sulfuric acid, manganese, zinc, leaching, reaction, solution, ferromanganese smelting dust, sulfuric acid, manganese, zinc, leaching

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