造渣精炼去除硅铁合金中铝钙杂质研究

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英文篇名：REMOVING ALUMINUM AND CALCIUM IMPURITIES FROM FERROSILICON BY SLAG REFINING 作者：张彦辉 ; 李亚琼 ; 张立峰 英文作者：ZHANG Yanhui;LI Yaqiong;ZHANG Lifeng;School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing;Beijing Key Laboratory of Rare and Precious Metals Green Recycling and Extractiong; 关键词：硅铁合金 ; 造渣精炼 ; SiO2 ; Fe2O3 ; 洁净度 英文关键词：ferrosilicon;;slag refining;;SiO2;;Fe2O3;;cleanliness 中文刊名：THJN 英文刊名：Ferro-Alloys 机构：北京科技大学冶金与生态工程学院;稀贵金属绿色回收与提取北京市重点试验室; 出版日期：2019-02-28 出版单位：铁合金 年：2019 期：v.50;No.276 基金：国家自然科学基金(51725402、51604023);; 印刷电路板稀贵金属绿色提取新工艺研究(Z171100002217063) 语种：中文; 页：THJN201901014 页数：4 CN：01 ISSN：22-1145/TF 分类号：39-42

摘要

Al、Ca是硅铁合金中两种主要的有害杂质元素。为了寻求一种高效率去除铝钙的方法,文章尝试采用SiO_2和Fe_2O_3渣剂对硅铁合金进行造渣氧化精炼试验。研究发现:造渣精炼后,硅铁合金中的Al、Ca杂质含量分别降为0.13%、0.005%,去除率分别达到88.28%、98.38%。该方法不仅能有效避免渣剂对硅铁合金造成二次污染,还能大幅度降低铝钙杂质含量,从而提高了硅铁合金的洁净度。
        Aluminum and calcium are the two main harmful impurity elements in ferrosilicon. In order to remove Al and Ca impurities efficiently,this paper attempted to use SiO_2 and Fe_2O_3 slag agents to oxidize and refine ferrosilicon. The results show that the final A1 and Ca contents after slag refining were reduced to 0.13% and 0.005% respectively,and the corresponding removal efficiencies got 88.28% and 98. 38%. It indicated that slag refining by using SiO_2 and Fe_2O_3 slag agents can reduce drastically Al and Ca contents and avoid the secondary pollution of ferrosilicon caused by slag agent,which finally improved the cleanliness of ferrosilicon.

引文

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