详细信息
废旧阴极-赤泥协同处理烧结熟料的溶出性能 ( EI收录)
Digestion performance of roasted sample produced by co-treatment of spent pot-lining and red mud
文献类型:期刊文献
中文题名:废旧阴极-赤泥协同处理烧结熟料的溶出性能
英文题名:Digestion performance of roasted sample produced by co-treatment of spent pot-lining and red mud
作者:路坊海 郑凯 苏向东 陈肖虎 黄芳 王芝成 谷晓菲 鄢青松
第一作者:路坊海
通信作者:Lu, Fang-Hai
机构:[1]贵州理工学院材料与冶金工程学院,贵州贵阳550003;[2]贵州理工学院,贵州省轻金属材料制备技术重点实验室,贵州贵阳550003;[3]贵州亿维德环保科技发展有限公司,贵州清镇551400
第一机构:贵州理工学院材料与冶金工程学院
年份:2020
卷号:40
期号:7
起止页码:3037-3043
中文期刊名:中国环境科学
外文期刊名:China Environmental Science
收录:CSTPCD;;EI(收录号:20203409068757);Scopus;北大核心:【北大核心2017】;CSCD:【CSCD2019_2020】;
基金:国家自然科学基金资助项目(51664010,51664008);贵州省高层次创新型人才培养项目(GZSQCC2018002);贵阳市科技计划项目(筑科合同[2019]10-3号);贵州省流程性工业新过程工程研究中心(黔教合KY[2017]021号);贵州理工学院高层次人才科研启动经费项目(XJGC20181010)。
语种:中文
中文关键词:赤泥;协同处理;熟料;溶出性能;回收
外文关键词:red mud;co-treatment;roasted sample;digestion performance;recovery
摘要:采用XRF,ICP-MS,XRD及SEM-EDS检测手段,研究了废旧阴极-赤泥高温协同处理所得熟料的溶出性能.结果表明,Na2CO3浓度,温度,时间及液固比因素对Al2O3,Na2O溶出率TFe2O3的富集效果的影响趋势一致.最适宜溶出条件为:Na2CO3 30g/L,温度50℃,时间30min,液固比8.该条件下,熟料中Al2O3和Na2O溶出率分别高达为87.41%和92.51%;相应的SiO2和CaO溶出率仅为3.02%和0.36%,铁矿物几乎不溶.溶出渣中的TFe2O3含量从熟料中23.64%提高到39.89%,研究表明溶出工艺同步实现了熟料中铝、钠的回收和铁的富集.再者,处理后溶出渣较熟料减量近16%(以铝和钠溶出率测算),且属于非危险性废物.
The digestion performance of roasted sample produced by co-treatment of spent pot-lining and red mud at high temperature were studied using XRF,ICP-MS,XRD and SEM-EDS.The experimental results showed that the influences of alkali concentration(Na2CO3),temperature,digestion duration and liquid-solid ratio on the digestion rates of Al2O3 and Na2O and the enrichment of TFe2O3 were consistent.The optimal digestion conditions were below:Na2CO3 30g/L,temperature 50℃,time 30min,liquid-solid ratio 8.Under these conditions,the digestion rates of Al2O3 and Na2O in the roasted sample were 87.41% and 92.51% respectively;while only 3.02% of SiO2 and 0.36% of CaO were digested,and iron minerals were almost indissoluble in alkaline solution.The content of TFe2O3 increased to 39.89% in the digested residue from 23.64% in the roasted sample.The results showed that the efficiently recovery of aluminum,sodium and the enrichment of iron from the roasted sample were achieved simultaneously by the digestion process.Moreover,compared with the roasted sample,the amount of digested residue was reduced by nearly 16%(evaluated based on the digestion rates of Al2O3 and Na2O),and it was non-hazardous.
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