摘要
以低品位红土镍矿((TFe)=22%、(Ni)=1.89%)为原料,运用高温电阻炉对转底炉直接还原红土镍矿新工艺进行热态模拟实验研究。通过正交实验考察了焙烧温度、焙烧时间、(C)/(O)三个因素对红土镍矿选择性还原的影响,并分析了考察因素对金属化率的影响程度,得出最优实验方案。结果表明,红土镍矿含碳球团转底炉工艺因素对金属化率影响程度依次为:(C)/(O)>焙烧温度>焙烧时间。当(C)/(O)到0.8时,铁金属化率最大为67.85%,此时XRD分析已检测不到镍氧化物的存在。
The paper conduct a thermal simulation research using high temperature electric resistance furnace on the direct reduction of the low grade laterite nickels（（TFe）=22%、（Ni）=1.89%）by using rotary hearth furnace new process.Investigate the effect of roasting temperature,roasting time and（C）/（O） on the selective reduction rate of the laterite nickels through the orthogonal test,analyze the effect of the three factors as mentioned above on the metallization rate and conclude an ideal test method.The results show that the influence degree of laterite-nickel ore carbon-containing pellet rotary hearth furnace on metallization rate order as：（C）/（O） calcination temperaturecalcination time.When the（C）/（O） reach 0.8,maximum of the iron metallization ratio is 67.85%,the XRD analysis doesn’t detect the presence of nickel oxide.
出处
《工业加热》
CAS
2013年第1期45-47,共3页
Industrial Heating
关键词
红土镍矿
焙烧
金属化率
正交实验
含碳球团
laterite nickel
roasting
metallization rate
orthogonal test
carbonic pellets
