CAS OpenIR
Recovery of nickel and molybdate from ammoniacal leach liquor of spent hydrodesulfurization catalyst using LIX84 extraction
Wu, Hao1; Duan, Siyu1; Liu, Dandan1; Guo, Xiaofang1; Yi, Aifei2,3; Li, Haoran4
2021-08-15
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume269Pages:8
AbstractAmmonia 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.
KeywordSpent catalyst Ammonia leaching LIX84 Nickel extraction Oxalic acid stripping
DOI10.1016/j.seppur.2021.118750
Language英语
WOS KeywordVALUABLE METALS ; MOLYBDENUM ; HDS ; PRECIPITATION ; REMOVAL ; DIESEL ; COPPER ; WASTE ; NI
Funding ProjectChina Ocean Mineral Resource RD Association
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationChina Ocean Mineral Resource RD Association
WOS IDWOS:000652640300009
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/48859
Collection中国科学院过程工程研究所
Corresponding AuthorWu, Hao; Yi, Aifei
Affiliation1.Taiyuan Univ Sci & Technol, Sch Environm & Safety, Taiyuan, Peoples R China
2.GRINM Resources & Environm Technol Corp Ltd, Natl Engn Lab Biohydromet, Beijing, Peoples R China
3.GRINM Grp Corp Ltd, Beijing, Peoples R China
4.Chinese Acad Sci, State Key Lab Biochem Engn, Inst Proc Engn, Beijing, Peoples R China
Recommended Citation
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.
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