文献类型：期刊文献

英文题名：Co-Treatment of Spent Pot-Lining and Red Mud for Carbon Reutilization and Recovery of Iron, Aluminum and Sodium by Reductive Roasting Process

作者：Lu, Fanghai Su, Xiangdong Huang, Fang Wang, Jiawei Wang, Haifeng

第一作者：路坊海

通信作者：Lu, FH[1];Lu, FH[2]

机构：[1]Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Peoples R China;[2]Guizhou Inst Technol, Key Lab Light Met Mat Proc Guizhou Prov, Guiyang 550003, Peoples R China;[3]Guizhou Univ, Sch Mat & Met Engn, Guiyang, Peoples R China

第一机构：贵州理工学院材料与冶金工程学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Peoples R China;corresponding author), Guizhou Inst Technol, Key Lab Light Met Mat Proc Guizhou Prov, Guiyang 550003, Peoples R China.|贵州理工学院;贵州理工学院材料与冶金工程学院;

年份：2020

卷号：51

期号：4

起止页码：1564-1575

外文期刊名：METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE

收录：;EI(收录号：20202508845716);Scopus(收录号：2-s2.0-85088415069);WOS:【SCI-EXPANDED(收录号:WOS:000540398000002)】；

基金：This work was supported by the National Natural Science Foundation of China (51664010 and 51664008), Science and Technology Foundation of Guizhou Province ([2018]0002), Guizhou Novel Process Engineering Research Center of Process industry, China [KY(2017)021], and High-level Talents Foundation of Guizhou Institute of Technology (XJGC20181010).

语种：英文

外文关键词：Alumina - Aluminum - Aluminum oxide - Calcination - Calcium oxide - Carbon - Fluorine compounds - Leaching - Magnetic separation - Molar ratio - Sodium - Sodium compounds

摘要：Spent pot-lining (SPL) and red mud (RM) are the two major solid wastes of the aluminum industry. In this study, an innovative method has been proposed for co-treatment of SPL and RM to reuse carbon and recover metal (iron, aluminum and sodium) by a reductive roasting-leaching-magnetic separation process (RRLMS process). Moreover, the transformation behaviors of fluoride, cyanide and sulfur present in these residues were studied. The effects of parameters such as temperature, CaO/SiO(2)molar ratio, addition amount of SPL, Na2O/Al(2)O(3)molar ratio and roasting time on the result of the process were investigated. Under optimum conditions, the recovery extents of Al(2)O(3)and Na2O were 83.12 and 91.80 pct, respectively. The corresponding leaching extent and loss of F upon roasting process were 16.03 and 35.27 pct, respectively, and only 29.02 pct of S(T)in the roasted product was leached. Furthermore, reduction extent of 78.65 pct and a metallization extent of 62.83 pct for iron minerals were achieved. The SPL-RM mixture after treatment was rendered non-hazardous. Finally, wet magnetic separation at 1.2 A current (magnetic field strength of approximately 130 mT) provided 30.83 wt pct concentrate yield with 59.09 wt pct total iron concentration and iron recovery extent of 65.25 pct from the leached residue.