Extraction of copper, zinc and cadmium from copper-cadmium-bearing slag by oxidative acid leaching process

doi:10.1007/s12598-016-0759-7

	Extraction of copper, zinc and cadmium from copper-cadmium-bearing slag by oxidative acid leaching process
	Li, Meng 1,3; Zhang, Ying 1; Wang, Xiao-Hui 1; Yang, Jian-Guang 2; Qiao, Shan 1; Zheng, Shi-Li 1; Zhang, Yi 1
刊名	RARE METALS
	2021-10-01
卷号	40 期号:10 页码:2975-2984
关键词	Copper-cadmium-bearing slag Catalytic oxidative acid leaching Activated carbon Kinetics
ISSN号	1001-0521
DOI	10.1007/s12598-016-0759-7
英文摘要	An intensified oxidative acid leaching of copper-cadmium-bearing slag featuring using high-efficient oxygen carrier, such as activated carbon, was investigated to achieve high leaching rate of valuable metals. The effects of leaching variables, including agitation rate, sulfuric acid concentration, temperature, slag particle size, activated carbon and cupric ion concentration, were examined. It is found that leaching rates of cadmium and zinc both exceed 99 % in a very short time, but for copper, leaching rate of 99 % is achieved under the optimized leaching parameters, which are agitation rate of 100 r.min(-1), sulfuric acid concentration of 15 wt%, leaching temperature of 80 degrees C, slag particle size of 48-75 mu m, activated carbon concentration of 3 g.L-1, liquid-to-solid ratio of 4:1, oxygen flow rate of 0.16 L.min(-1), and leaching time of 60 min. The macro-leaching kinetics of copper metal was analyzed, and it is concluded that the inner diffusion is the controlling step, with apparent activation energy of 18.6 kJ.mol(-1). The leaching solution with pH value of 2-4 can be designed to selectively extract valuable metals without neutralization, and the leaching residue can be treated by prevailing Pb smelting process.
资助项目	National Science & Technology Pillar Program during the Twelfth Five-Year Plan Period of China[2012BAC12B01] ; Major Scientific and Technological Special Project of Hunan Province, China[2012FJ1010]
WOS关键词	SOLVENT-EXTRACTION ; DISSOLUTION ; KINETICS ; RECOVERY ; FERRITE ; SPHALERITE ; SULFATE ; GRAPHITE
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	NONFERROUS METALS SOC CHINA
WOS记录号	WOS:000658809100003
资助机构	National Science & Technology Pillar Program during the Twelfth Five-Year Plan Period of China ; Major Scientific and Technological Special Project of Hunan Province, China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/49228]
专题	中国科学院过程工程研究所
通讯作者	Zheng, Shi-Li
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Cent South Univ, Sch Met & Environm, Changsha 410083, Peoples R China 3.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Li, Meng,Zhang, Ying,Wang, Xiao-Hui,et al. Extraction of copper, zinc and cadmium from copper-cadmium-bearing slag by oxidative acid leaching process[J]. RARE METALS,2021,40(10):2975-2984.
APA	Li, Meng.,Zhang, Ying.,Wang, Xiao-Hui.,Yang, Jian-Guang.,Qiao, Shan.,...&Zhang, Yi.(2021).Extraction of copper, zinc and cadmium from copper-cadmium-bearing slag by oxidative acid leaching process.RARE METALS,40(10),2975-2984.
MLA	Li, Meng,et al."Extraction of copper, zinc and cadmium from copper-cadmium-bearing slag by oxidative acid leaching process".RARE METALS 40.10(2021):2975-2984.