炼钢炉渣的浸出和碳酸化研究  

Leaching and carbonation of steelmaking slag

作　　者：唐海燕[1,2] 孙绍恒[2] 刘辉[2] 王爽[2] 孟文佳[2] 李京社[1,2] 

机构地区：[1]北京科技大学钢铁冶金新技术国家重点实验室,北京100083 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《中国科技论文》2013年第12期1243-1246,共4页China Sciencepaper

基　　金：高等学校博士学科点专项科研基金资助项目(20100006120008);北京市本科生科技创新项目(12020142)

摘　　要：为提高炼钢炉渣中钙镁离子的浸出和碳酸化率,用荧光光谱仪分析了炉渣的成分,并用X射线衍射(XRD)分析了相组成。试验了不同剂量的盐酸和醋酸作为浸出试剂的浸出效果,以及温度、搅拌条件对浸出的影响。结果表明常温下用HCl作为浸出试剂可达到良好的浸出效果,在本实验条件下浸出率可达93.4%,用醋酸的浸出率可达85.8%。盐酸浸出后再通CO2所得碳酸钙的纯度可达91.02%,转化率56.5%;80℃时用醋酸作试剂的浸出率大于盐酸;搅拌有利于钙镁离子浸出。In order to improve the leaching and carbonation rates of calcium and magnesium ions in steelmaking slag, the chemical and phase compositions have been analyzed with fluorescence spectrometer and X-ray diffraction （XRD）. Also, the leaching of different amounts of hydrochloric acid and acetic acid and the effects of temperature and stirring conditions have been investigated. The results showed that hydrochloric acid as a leaching reagent can achieve good results with a leaching rate up to 93.40%, which was higher than the leaching rate of acetic acid 85.8%. Moreover, the purity of calcium carbonate is 91.02% and the conversion rate 56.5%. The leaching rate with acetic acid is higher than with hydrochloric acid at 80 ℃, and the stirring is favorable for ion leaching.

关 键 词：钢渣 浸出 碳酸化 

分 类 号：TF703[冶金工程—钢铁冶金] X757[环境科学与工程—环境工程]