Recovery of nickel and molybdate from ammoniacal leach liquor of spent hydrodesulfurization catalyst using LIX84 extraction

doi:10.1016/j.seppur.2021.118750

	Recovery of nickel and molybdate from ammoniacal leach liquor of spent hydrodesulfurization catalyst using LIX84 extraction
	Wu, Hao 3; Duan, Siyu 3; Liu, Dandan 3; Guo, Xiaofang 3; Yi, Aifei 1,4; Li, Haoran 2
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2021-08-15
卷号	269 页码:8
关键词	Spent catalyst Ammonia leaching LIX84 Nickel extraction Oxalic acid stripping
ISSN号	1383-5866
DOI	10.1016/j.seppur.2021.118750
英文摘要	Ammonia leaching can achieve selective recovery of nickel and molybdenum without aluminum extraction from spent hydrodesulfurization catalyst. In this study, a method for selective nickel extraction by LIX84 from ammoniacal leach liquor is proposed. After a two-stage countercurrent extraction, 99.977% Ni was extracted, while 0.096% Mo, 0.431% Al and 2.812% P were co-extracted under LIX84 concentration of 5%, initial pH value of 11.5, and phase ratio (O/A) of 2/1.1. Then a 0.1 mol/L oxalic acid (initial pH 1.36) was used to strip Ni-loaded organic phase under the phase ratio (O/A) of 0.5. 99.91% nickel in organic phase can be stripped into aqueous phase, while 91.16% nickel in aqueous phase can be precipitated as pure nickel oxalate dihydrate, and the oxalic acid solution containing dissolved nickel can be returned to the next stripping process to achieve nickel recovery. Subsequently, ammonium molybdate product can be obtained from molybdenum-containing raffinate by evaporation and crystallization after impurity removal. In addition, thermodynamic calculations show that the nickel extraction process by LIX84 from ammoniacal solution is an endothermic reaction. The present approach may efficiently be applied to recovery of molybdenum and nickel from spent hydrodesulfurization catalyst as per the proposed schematic flow-sheet.
资助项目	China Ocean Mineral Resource RD Association
WOS关键词	VALUABLE METALS ; MOLYBDENUM ; HDS ; PRECIPITATION ; REMOVAL ; DIESEL ; COPPER ; WASTE ; NI
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000652640300009
资助机构	China Ocean Mineral Resource RD Association
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/48858]
专题	中国科学院过程工程研究所
通讯作者	Wu, Hao; Yi, Aifei
作者单位	1.GRINM Resources & Environm Technol Corp Ltd, Natl Engn Lab Biohydromet, Beijing, Peoples R China 2.Chinese Acad Sci, State Key Lab Biochem Engn, Inst Proc Engn, Beijing, Peoples R China 3.Taiyuan Univ Sci & Technol, Sch Environm & Safety, Taiyuan, Peoples R China 4.GRINM Grp Corp Ltd, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wu, Hao,Duan, Siyu,Liu, Dandan,et al. Recovery of nickel and molybdate from ammoniacal leach liquor of spent hydrodesulfurization catalyst using LIX84 extraction[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2021,269:8.
APA	Wu, Hao,Duan, Siyu,Liu, Dandan,Guo, Xiaofang,Yi, Aifei,&Li, Haoran.(2021).Recovery of nickel and molybdate from ammoniacal leach liquor of spent hydrodesulfurization catalyst using LIX84 extraction.SEPARATION AND PURIFICATION TECHNOLOGY,269,8.
MLA	Wu, Hao,et al."Recovery of nickel and molybdate from ammoniacal leach liquor of spent hydrodesulfurization catalyst using LIX84 extraction".SEPARATION AND PURIFICATION TECHNOLOGY 269(2021):8.