摘要
钢渣是钢铁企业利用率比较低的大宗固体废物之一,目前我国钢渣的综合利用率仅为20%左右,与许多发达国家90%以上的钢渣利用率相差甚远,尚未利用的钢渣存放量高达10亿t。本文综合分析了国内外学者关于钢渣综合利用的文献,主要从以下几方面进行阐述:首先,简单对比分析国内主要的六种钢渣处理工艺及其优缺点;其次,从企业内部循环利用的角度分析介绍钢渣在有价金属回收、烧结方面的应用;最后,从企业外部非循环利用的角度出发分析介绍钢渣在建筑材料、筑路施工、农业肥料、陶瓷产品、海域及水污染治理等领域的综合利用现状。通过分析,笔者认为建立更加详细的钢渣分类系统、升级粉磨工艺及设备是钢渣综合利用的前提。
Steel slag is one of the bulk sold wastes that have not been well utilized by steel mills.At present,the overall utilization rate of steel slag in China is only around 20%,much lower than in many developed countries,in which over 90% of the slag can be utilized.The amount of unused steel slag stock in China is enormous:1 billion metric tons.After an overview of the related literature by scholars of China and other countries on steel slag utilization,the paper gives a short description of the six main processes of steel slag treatment in China,and compares their advantages and disadvantages.Then the paper reviews the recycling practices inside steel mills,including recovering valuable metals and sintering.Lastly the paper reviews the recycling practices outside steel mills,including the utilization of steel slag in construction materials making,road pavement,fertilizers,ceramic products,pollution control of sea and other water bodies.The paper concludes that for better utilization of steel slag,a more detailed classification system,upgraded milling process and equipment are needed.
作者
王吉凤
付恒毅
闫晓彤
王乐
王鹏程
WANG Ji-feng;FU Heng-yi;YAN Xiao-tong;WANG Le;WANG Peng-cheng
出处
《中国有色冶金》
CAS
北大核心
2021年第6期77-82,共6页
China Nonferrous Metallurgy
基金
河北省高等学校科学技术研究项目资助(ZD2021331)。
关键词
钢渣
处理工艺
存放量
综合利用
有价金属回收
利用率
钢渣分类
steel slag
treatment processes
slag storage
comprehensive utilization
recovery of valuable metals
utilization rate
classification of steel slag
