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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100～120 min,可达到高碳铬铁冶炼所需的1 550～1 620℃,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+Al_2O3)=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。
Abstract：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 1 550-1 620℃,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=SiO2(MgO+Al_2O3)=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.
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基本信息:
中图分类号:TF641
引用信息:
[1]赵志民,庞建明,方建锋,等.微波冶炼高碳铬铁研究[J].有色金属(冶炼部分),2020(11):85-88+106.
基金信息:
陕西省2018年重点研发计划(2018ZDXM-GY-157)
2020-11-10
2020-11-10