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金属矿山 ›› 2012, Vol. 41 ›› Issue (02): 73-76.

• 矿物工程 • 上一篇    下一篇

氧化锰矿石直接还原制备锰铁合金

周超洋,吴光亮   

  1. 中南大学资源加工与生物工程学院
  • 出版日期:2012-02-15 发布日期:2012-05-30

Producing Mn-Fe Alloy by Direct Reduction to Manganese Oxicle Ore

Zhou Chaoyang,Wu Guangliang   

  1. School of Minerals Processing and Bioengineering,Central South University
  • Online:2012-02-15 Published:2012-05-30

摘要: 以某氧化锰矿石为原料,采用直接还原工艺制备锰铁合金,重点研究了碱度、配碳系数、添加剂加入量对还原过程的影响。研究结果表明:合适的碱度是实现渣与金属分离的重要条件,配碳系数影响产物中金属的迁移、聚集,添加剂对降低渣系熔点、促进金属相聚集长大效果明显。试样在碱度为2.0、配碳系数为1.0、添加剂配入量为CaO+AlAl2O3+SiO2+MgO总量的5%、温度为1 350 ℃条件下还原焙烧30 min,可获得金属锰含量约71%、金属铁含量约17%、碳含量约7%的锰铁合金。

关键词: 氧化锰矿石, 直接还原, 相变分离, 碱度, 配碳系数, 添加剂用量

Abstract: Producing Mn-Fe alloys with direct reduction to manganese oxicle ore has been researched. The effect of the basicity, carbon coefficient and additive on Fe-Mn alloy producing process were discussed and analysed. The results show that, the appropriate basicity is the important condition to separate the slag and metal, the carbon coefficient influences the metallic phase migrating and gathering, additive has a strong impact in reducing the melting point of slag and promoting the metal grain grow up together. The Fe-Mn alloy containing Mn71%, Fe17%, C7.0% is obtained in the condition that the temperature is 1 350 ℃and maintain 30 min, basicity is 2.0, carbon coefficient is 1.0, the amount of additive is 5% of total amount of CaO+Al2O3+SiO2+MgO slag.

Key words: Manganese oxide ore, Direct reduction, Phase changing, Basicity, Carbon coefficient, Amount of additive