Indium recovery from acidic aqueous solutions by solvent extraction with D2EHPA: a statistical approach to the experimental design
Document title: Indium recovery from acidic aqueous solutions by solvent extraction with D2EHPA: a statistical approach to the experimental design
Journal: Brazilian journal of chemical engineering
Database: PERIÓDICA
System number: 000308878
ISSN: 0104-6632
Authors: 1
2
Institutions: 1Comissao Nacional de Energia Nuclear, Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Minas Gerais. Brasil
2Universidade Federal de Minas Gerais, Departamento de Engenharia Metalurgica e de Materiais, Belo Horizonte, Minas Gerais. Brasil
Year:
Season: Jun
Volumen: 20
Number: 2
Pages: 121-128
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract This experimental work presents the optimization results of obtaining a high indium concentration solution and minimum iron poisoning by solvent extraction with D2EHPA solubilized in isoparaffin and exxsol. The variables studied in the extraction step were D2EHPA concentration, acidity of the aqueous phase and time of contact between phases. Different hydrochloric and sulfuric acid concentrations were studied for the stripping step. The optimum experimental conditions resulted in a solution with 99% indium extraction and less than 4% iron. The construction of a McCabe-Thiele diagram indicated two theoretical countercurrent stages for indium extraction and at least six stages for indium stripping. Finally, the influence of associated metals found in typical sulfate leach liquors from zinc plants was studied. Under the experimental conditions for maximum indium extraction, 96% indium extraction was obtained, iron extraction was about 4% and no Ga, Cu and Zn were co-extracted
Disciplines: Química,
Ingeniería
Keyword: Ingeniería metalúrgica,
Química metalúrgica,
Recuperación de metales,
Di(2-etilhexil) ácido fosfórico,
Extracción por solventes,
Indio
Keyword: Chemistry,
Engineering,
Metallurgical engineering,
Metallurgical chemistry,
Metal recovery,
Di(2-ethylhexyl) hydrogen phosphate,
Solvent extraction,
Indium
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