用矿热炉和摇炉生产金属锰的工艺探讨  

Discussion on process of smelting metal manganese by submerged arc furnace and rocking furnace

作　　者：鲁路[1] 任宇君 袁守谦[1] 

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055

出　　处：《中国冶金》2016年第7期58-62,共5页China Metallurgy

摘　　要：该工艺是在矿热炉中用焦炭还原锰铁矿石,将还原反应的温度控制为1 500℃以下,渣碱度ω(CaO)/ω(SiO2)为0.16,SiO2的质量分数为18%,生产出的富锰渣中MnO的质量分数不小于70%,同时有副产物碳素锰铁产生。然后将富锰渣热兑入摇炉中,加石灰精炼生产调和渣,使其碱度提高到2.0,这样有利于脱除磷、硫,并降低SiO2的活度。最后在摇炉中加入工业硅还原调和渣中的锰,获得锰质量分数不小于99%的金属锰,节能效果明显。In submerged arc furnace, coke was used to reduce manganese iron ore in process, reaction temperature was strictly controlled under 1 500 ℃, slag basicity cocaoro〈slo2 was 0.16 ,mass fraction of SiO2 was 18 %, mass fraction of MnO in manganese rich slag was not less than 70 %. Meanwhile,byproduct carbon ferromanganese was produced. Hot rich-manganese slag was poured into rocking furnace to refine and product harmonic slag which basicity will be increased to 2.0. This condition was beneficial to remove P and S,and decreased activity of SiO2. Finally,industrial silicon was added to reduce Mn of harmonic slag and get metal manganese,in which mass fraction of Mn was not less than 990//00 in rocking furnace. It can have a remarkable energy saving effect.

关 键 词：矿热炉 摇炉 金属锰 

分 类 号：TF792[冶金工程—钢铁冶金]