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A Novel Approach for Separation and Recovery of Titanium, Scandium, Iron from Acidic Wastewater and Red Gypsum Utilization
Ju, Jinrong1,2,3; Feng, Yali1; Li, Haoran2,3; Wang, Ben1,2,3
2022-04-21
Source PublicationMINING METALLURGY & EXPLORATION
ISSN2524-3462
Pages16
AbstractAt present, acidic wastewater is directly neutralized with lime or limestone, which wastes resources such as titanium, scandium, and iron and generates a great deal of solid waste. This study proposes a novel approach for the separation and recovery of titanium, scandium, and iron from acidic wastewater and red gypsum utilization. The recovery efficiency of titanium in acidic wastewater was 97.59% under the molar ratio of titanium dioxide to phosphoric acid of 1:2.2, the reaction temperature of 85 degrees C, and the reaction time of 45 min. The scandium in the filtrate after the recovery of titanium can be finely extracted with P507, and 99.79% scandium can be extracted by single-stage extraction under the P507 concentration of 15%, the phase ratio (O/A) of 1:13, and extraction time of 6 min. In addition, the process of extracting scandium with P507 is an exothermic reaction by thermodynamic analysis. The raffinate after extracting scandium can be used for leaching red gypsum. As a result, calcium sulfate with a purity of 98.34% and whiteness of 94.27% was obtained under the leaching temperature of 60celcius, the leaching time of 30 min, and the ratio of raffinate volume to red gypsum mass (L/S) of 3.5:1. Subsequently, the 97.64% iron in the leaching solution was recovered by the ammonium jarosite precipitation process, and ammonium sulfate with a purity of 99.65% can be obtained. The process can competently be applied to recover titanium, scandium, and iron in acidic wastewater and resource treatment of red gypsum.
KeywordAcidic wastewater Red gypsum Phosphoric acid precipitation Solvent extraction Ammonium jarosite
DOI10.1007/s42461-022-00600-5
Language英语
WOS KeywordSOLVENT-EXTRACTION ; SULFURIC-ACID ; PRECIPITATION ; PHOSPHATE ; JAROSITE ; SORPTION ; CONVERSION ; MECHANISM ; VANADIUM ; REMOVAL
Funding ProjectChina Ocean Mineral Resources RD Association[JS-KTHT-2019-01] ; China Ocean Mineral Resources RD Association[DY135-B2-15]
WOS Research AreaMetallurgy & Metallurgical Engineering ; Mining & Mineral Processing
WOS SubjectMetallurgy & Metallurgical Engineering ; Mining & Mineral Processing
Funding OrganizationChina Ocean Mineral Resources RD Association
WOS IDWOS:000784615300001
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/52830
Collection中国科学院过程工程研究所
Corresponding AuthorFeng, Yali; Li, Haoran
Affiliation1.Univ Sci & Technol Beijing, Civil & Resource Engn Sch, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Biochem Engn, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Ju, Jinrong,Feng, Yali,Li, Haoran,et al. A Novel Approach for Separation and Recovery of Titanium, Scandium, Iron from Acidic Wastewater and Red Gypsum Utilization[J]. MINING METALLURGY & EXPLORATION,2022:16.
APA Ju, Jinrong,Feng, Yali,Li, Haoran,&Wang, Ben.(2022).A Novel Approach for Separation and Recovery of Titanium, Scandium, Iron from Acidic Wastewater and Red Gypsum Utilization.MINING METALLURGY & EXPLORATION,16.
MLA Ju, Jinrong,et al."A Novel Approach for Separation and Recovery of Titanium, Scandium, Iron from Acidic Wastewater and Red Gypsum Utilization".MINING METALLURGY & EXPLORATION (2022):16.
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