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+Al2O3+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。
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% , Fel7% , 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.
出处
《金属矿山》
CAS
北大核心
2012年第2期73-76,共4页
Metal Mine
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
Manganese oxide ore, Direct reduction, Phase changing, Basicity, Carbon coefficient, Amount of additive
