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 SiO2 and Fe2O3 slag agents to oxidize and refine ferrosilicon. The results show that the final Al 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 SiO2 and Fe2O3 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.
作者
张彦辉
李亚琼
张立峰
ZHANG Yanhui;LI Yaqiong;ZHANG Lifeng(School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing,Beijing 100083, China;Beijing Key Laboratory of Rare and Precious Metals Green Recycling and Extractiong, Beijing 100083, China)
出处
《铁合金》
2019年第1期31-34,共4页
Ferro-alloys
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)
