摘要
基于冶金行业发展循环经济和加强环保需求,便于精炼渣和工业烟气的资源综合利用,以精炼渣为原材料制备了钙基材料,并进一步对比研究了钙基材料对纯CO2气体和高炉煤气中CO2的吸附性能。采用“破碎-超声预处理-乙酸浸出-沉淀-焙烧”路线,对精炼渣中的钙组分进行提取和回收。结果表明,在乙酸浓度为1mol/L、固液比为1∶10、浸出时间为1h、浸出温度为40℃时,精炼渣中钙的回收率可以达到32.7%,制备的钙基材料中CaO质量分数为94.1%。在400℃,钙基材料对纯CO2气体和高炉煤气中CO2的吸附量分别为30.8和19.1mg/g。钙基材料对高炉煤气中CO2吸附量为对纯CO2气体吸附量的62%,说明该材料对高炉煤气中CO2有较好的吸附作用。
Based on the requirements for developing circular economy and enhancing environmental protection in the metallurgical industry,calcium-based material was prepared with refining slag as the raw material,which is convenient for comprehensive utilization of refining slag and industrial flue gas.The adsorption of pure CO2 gas and CO2in blast furnace gas by calcium-based material was further comparatively studied.Through the route of“crushing-ultrasonic pretreatmentacetic acid leaching-precipitation-calcination”,the calcium components in refining slag were extracted and recovered.The results show that when the acetic acid concentration is 1mol/L,the solid-liquid ratio is 1∶10,the leaching time is 1h,and the leaching temperature is 40℃,the recovery rate of calcium in refining slag can reach 32.7%,and the mass fraction of CaO in the prepared calcium-based material is 94.1%.At 400℃,the adsorption capacity of calcium-based material to pure CO2 gas and CO2 in blast furnace gas is 30.8 and 19.1mg/g,respectively.The adsorption capacity of the calciumbased material to CO2 in blast furnace gas is 62% of that to pure CO2 gas,which shows a good performance of the material for CO2 adsorption from blast furnace gas.
作者
李玲玲
陈韧
张作良
孟祥然
林君
邹宗树
LI Ling-ling;CHEN Ren;ZHANG Zuo-liang;MENG Xiang-ran;LIN Jun;ZOU Zong-shu(School of Metallurgy Engineering,Liaoning Institute of Science and Technology,Benxi 117004,Liaoning,China;School of Metallurgy,Northeastern University,Shenyang 110819,Liaoning,China)
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2020年第7期550-555,共6页
Journal of Iron and Steel Research
基金
国家自然科学基金资助项目(21503027)
辽宁省自然科学基金资助项目(2019-MS-175,2019-ZD-0519)
辽宁省百千万人才资助项目。
关键词
CO2
高炉煤气
乙酸浸出
钙基吸附剂
精炼渣
carbon dioxide
blast furnace gas
acetic acid leaching
calcium-based adsorbent
refining slag
