利用钢渣制备钙基CO_(2)循环吸附材料  

Preparation of calcium-based CO_(2)cyclic sorbents from steel slag

作　　者：刘军 李宇蒙 曹志众 刘玉峰 陶梦洁 赵青[2,3,4,5] LIU Jun;LI Yumeng;CAO Zhizhong;LIU Yufeng;TAO Mengjie;ZHAO Qing(National and Local Joint Engineering Laboratory of Advanced Automotive Steel Development,Technology Center,Ben Steel Group Co.,Ltd.,Benxi 117000,Liaoning,China;Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education),Northeastern University,Shenyang 110819,Liaoning,China;School of Metallurgy,Northeastern University,Shenyang 110819,Liaoning,China;National Frontiers Science Center for Industrial Intelligence and Systems Optimization,Northeastern University,Shenyang 110819,Liaoning,China;Key Laboratory of Data Analytics and Optimization for Smart Industry(Ministry of Education),Northeastern University,Shenyang 110819,Liaoning,China)

机构地区：[1]本钢集团有限公司技术中心先进汽车用钢开发与应用技术国家地方联合工程实验室,辽宁本溪117000 [2]东北大学多金属共生矿生态化冶金教育部重点实验室,辽宁沈阳110819 [3]东北大学冶金学院,辽宁沈阳110819 [4]东北大学工业智能与系统优化国家级前沿科学中心,辽宁沈阳110819 [5]东北大学智能工业数据解析与优化教育部重点实验室,辽宁沈阳110819

出　　处：《钢铁研究学报》2025年第2期258-268,共11页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(52374327,52074078);辽宁省应用基础研究计划资助项目(2023JH2/101600002);沈阳市中青年科技创新人才支持计划资助项目(RC220491);本钢集团辽宁省钢铁产业产学研创新联盟合作资助项目(KJBLM202202);中央高校基本科研业务专项资金资助项目(N2201023,N2325009);辽宁省教育厅2024年基本科研重点资助项目(2024JYTZD-03);东北大学2023年研究生教育质量保障工程资助项目;111计划项目(B16009)。

摘　　要：“碳中和2060”背景下研究钢渣碳捕集应用的意义不言而喻。为提高钢渣资源的综合利用,减少钢铁冶炼过程排放的CO_(2),采用湿法浸出技术提取了钢渣中的Ca、Mg组元,针对获得的Ca-Mg-Si-Al体系,开展了利用化学共沉淀法、溶胶-凝胶法和水热合成法3种方式制备CO_(2)吸附剂的实验研究,通过XRF、XRD、SEM、BET等检测手段对吸附剂的物化特性及循环吸附性能进行了表征分析。结果表明,与其他2种方法相比,化学共沉淀法在50℃、pH=10和陈化时间2 h条件下制备的吸附剂具有较高的初次吸附容量,为0.258 g/g。制备方式不同,CO_(2)吸附剂循环吸附性能表现出不同规律。化学共沉淀法制备的CO_(2)吸附剂吸附容量随循环次数增加呈下降趋势,水热合成法制备的CO_(2)吸附剂,呈先增高后降低的趋势。Under the background of the“Carbon Neutrality 2060”initiative,the significance of studying the application of steel slag carbon capture is self-evident.To enhance the comprehensive utilization of steel slag resources and reduce CO_(2)emissions during the steelmaking process,wet leaching technology was employed to extract Ca and Mg components from steel slag.Focusing on the resulting Ca-Mg-Si-Al system,experimental studies were conducted to prepare CO_(2)adsorbents using three different methods:chemical co-precipitation,sol-gel,and hydrothermal synthesis.The physicochemical properties and cyclic adsorption performance of the adsorbents were characterized and analyzed by XRF,XRD,SEM,BET,and other detection methods.The results indicated that,compared to other two methods,the adsorbent prepared by the chemical co-precipitation method under conditions of 50℃,pH=10,and an aging time of 2 h exhibited a higher initial adsorption capacity of 0.258 g/g.Different preparation methods demonstrated various patterns in the cyclic adsorption performance of the CO_(2)adsorbents.The adsorption capacity of the adsorbent prepared by the chemical co-precipitation method showed a decreasing trend with an increase in the number of cycles,while the adsorbent prepared by the hydrothermal synthesis initially exhibited an increase followed by a decrease in adsorption capacity.

关 键 词：钢渣 CO_(2)吸附剂 化学共沉淀法 溶胶-凝胶法 水热合成法 

分 类 号：X756[环境科学与工程—环境工程]