摘要
为开发洁净、高效的高碳铬铁冶炼新工艺,对微波加热铬矿球团冶炼高碳铬铁进行试验研究,探明配碳量、配渣对铬回收率的影响。结果表明,微波加热铬矿球团100~120min,可达到高碳铬铁冶炼所需的1550~1620℃,得到符合国标要求的高碳铬铁,铬回收率超过94%。当配碳系数为1.1,加入硅石使炉渣R=SiO2(MgO+Al2O3)=0.55时,冶炼效果最好。当炉渣R值较低时,合金铬含量及回收率均明显下降,可以通过延长微波加热时间进行改善。
In order to develop a new clean and efficient high-carbon ferrochrome smelting process,experiments of microwave heating chrome ore pellets to smelt high-carbon ferrochrome were carried out.Influence of proportion of carbon and slag allocation on recovery rate of chromium was investigated.The results show that microwave heating of chromium ore pellets for 100 to 120 minutes can reach a high-carbon ferrochrome smelting temperature of 1550—1620℃,and obtain high-carbon ferrochrome that meets the requirements of national standards with chromium recovery rate of 94%above.When carbon allocation coefficient is 1.1 and silica is added to make slag R=SiO 2(MgO+Al 2O 3)=0.55,the smelting effect is the best.When R value is lower,chromium content in alloy and recovery rate are significantly reduced,which can be improved by prolonging microwave heating time.
作者
赵志民
庞建明
方建锋
邸久海
李石稳
何家庆
ZHAO Zhi-min;PANG Jian-ming;FANG Jian-feng;DI Jiu-hai;LI Shi-wen;HE Jia-qing(New Metallurgy Hi-Tech Group,China Iron and Steel Research Institute,Beijing 100081,China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2020年第11期85-88,106,共5页
Nonferrous Metals（Extractive Metallurgy)
基金
陕西省2018年重点研发计划(2018ZDXM-GY-157)。
关键词
微波加热
配碳量
配渣
回收率
microwave heating
carbon allocation
slag allocation
recovery rate
