利用废渣冶炼回收硅铁的研究  

Study on Smelting SiFe Alloy From Waste Residue

作　　者：卢学峰[1,2] 南雪丽[1,2] 郭鑫[1,2] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州730050 [2]兰州理工大学有色金属合金及加工教育部重点实验室,甘肃兰州730050

出　　处：《铸造技术》2008年第12期1689-1691,共3页Foundry Technology

基　　金：甘肃省经贸委资助项目:甘肃省工业废渣利用的研究

摘　　要：利用金川公司的废渣和石英砂为主要原料,以焦碳和木炭作为还原剂,利用自制的小型直流电弧炉和混合加料法冶炼硅铁合金,并利用XRD和光学显微镜对合金进行了分析。实验表明,当石英砂质量分数为20%,炉料的配碳量为1.9∶1时,硅铁的回收率最高,产物中得到了Fe5Si3和Fe3Si。利用直流电弧炉冶炼硅铁合金具有独特的优势,在冶炼过程中解决了炉底上涨的技术难题。本研究不但可以解决废渣利用方面的问题,而且能合理的利用废渣起到环保作用,还能产生更好的经济效益。Utilizng Jinchuang Corporation＇s waste slag and quartz sand as main raw materials and charred coal and charcoal as reducing agent, ferro-silicon alloy was reclaimed by mixed charging method in self-made DO arc furnace. The alloy was analysed by means of XRD and optical microscope. The results show that when the mass ratio of quartz sand is 20% and the ratio of material and reducing agent is 1.9, the recovery rate of SiFe is the highest, and Fe5Si3 and Fe3Si can be obtained. DO arc furnace has a unique advantage in smelting FeSi alloy and can tackle bottom rise in smelting process. The technology can not only utilize waste slag but also protect environment.

关 键 词：废渣 硅铁 直流电弧炉 回收率 

分 类 号：TF645[冶金工程—钢铁冶金]