摘要
赤泥是氧化铝生产过程中产生的碱性工业固废。以赤泥为主要原料制备CO_(2)吸收矿化材料,分析了吸收矿化反应过程、反应前后赤泥浆液中Na^(+)转移特性及pH与吸收矿化效率的关系。结果表明,赤泥浆液吸收矿化CO_(2)后,赤泥出现一定量的钙霞石和方解石、比表面积增加至12.0 m^(2)/g。同时,部分Na^(+)从赤泥转入溶液中,溶液中钠离子升高至2.81 g/L。采用赤泥吸收矿化CO_(2)效率为27%以上,矿化CO_(2)后产生的赤泥pH稳定维持在7.5左右。
Red mud is an alkaline industrial solid waste produced in alumina production.CO_(2) absorption mineralized materials was prepared from red mud.The transfer characteristics of Na^(+) in red mud and relationship between pH value and absorption efficiency were analyzed.The results show that there is a certain amount of cancrinite and calcite in red mud after CO_(2) mineralization absorbed by red mud slurry,and the specific surface area rises to 12.0 m^(2)/g.At the same time,part of Na^(+) transfers from red mud into the solution,and Na^(+) concentration in the solution rises to 2.81 g/L.The absorption efficiency of mineralization CO_(2) by red mud is 27%above,and pH value of red mud generated after CO_(2) mineralization remains stable at about 7.5.
作者
曹瑞雪
康泽双
刘万超
闫琨
张腾飞
张延利
CAO Rui-xue;KANG Ze-shuang;LIU Wan-chao;YAN Kun;ZHANG Teng-fei;ZHANG Yan-li(Zhengzhou Non-ferrous Metals Research Institute Co.,Ltd.,of CHALCO,Zhengzhou 450041,China;CHINALCO Environmental Protection and Energy Conservation Group Co.,Ltd.,Beijing 101300,China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2022年第4期57-60,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
中铝集团青年科技人才启明星计划资助项目(2018MXJH08)。
关键词
赤泥
吸收
矿化
二氧化碳捕集
red mud
absorption
mineralization
CO_(2)capture
