钢渣资源化技术及展望  

Technologies and prospects for resource utilization of steel slag

作　　者：崔心宇 那贤昭[1] CUI Xinyu;NA Xianzhao(State Key Laboratory of Advanced Steel Processes and Products,Central Iron and Steel Research Institute Co.,Ltd.,Beijing 100081,China)

机构地区：[1]钢铁研究总院有限公司先进钢铁流程及材料国家重点实验室,北京100081

出　　处：《中国冶金》2024年第10期16-25,共10页China Metallurgy

基　　金：国家自然科学基金资助项目(51574091)。

摘　　要：随着中国钢铁产量不断提高,钢铁工业面临着严重的资源和环境问题,在钢渣的处理和利用方面尤为突出。目前的钢渣处理工艺中,钢渣热能大量浪费,金属铁回收过程能源消耗大;大部分钢渣填埋堆存,尾渣综合利用水平较低。“双碳”背景下,发展低碳绿色钢渣资源化技术势在必行。总结了目前主流的钢渣处理工艺并分析讨论了不同方法的优缺点;归纳了钢渣主要的资源化利用途径,对近年来钢渣综合利用的技术进行分析。结合钢渣处理和利用现状,讨论并展望了钢渣资源化技术的发展方向。在“双碳”目标下,应该利用好熔融钢渣的热能,发展余热回收和热态钢渣提铁技术,利用钢渣碳化技术制备高附加值产品,实现热、铁、尾渣资源的全面回收与利用。With the continuous increase in China′s steel production,the steel industry is facing severe resource and environmental problems,especially in the treatment and utilization of steel slag.In the current steel slag treatment process,a significant amount of thermal energy from steel slag is wasted,and the process of recovering metallic iron is highly energy-intensive.Additionally,the comprehensive utilization rate of tail slag is low,with most steel slag being landfilled or stockpiled.In the context of the"carbon peaking"and"carbon neutrality"targets,the development of low-carbon and green technologies for steel slag treatment and utilization is imperative.The current mainstream processes for steel slag treatment are summarized,and the advantages and disadvantages of different methods are discussed.The main pathways for resource utilization of steel slag are concluded,and the technologies for comprehensive utilization of steel slag in recent years are analyzed.Considering the current state of steel slag treatment and utilization,the future directions in this field are discussed and anticipated.Under the"carbon peaking"and"carbon neutrality"targets,it is essential to effectively utilize the thermal energy of molten steel slag,develop technologies for waste heat recovery and hot steel slag iron extraction,and use steel slag carbonation techniques to produce high value-added products,so as to realize comprehensive recovery and utilization of heat,iron and tail slag resources.

关 键 词：钢渣 处理工艺 余热回收 综合利用 “双碳”目标 

分 类 号：X757[环境科学与工程—环境工程]