ISSN 2594-5327
57º Congresso anual — Vol. 57 , num. 1 (2002)
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The aim of this work was to treat a manganese sulfate solution obtained from the sulfuric acid leaching of Mina do Azul manganese ore (Brazil) for copper, nickel and iron removal by solvent extraction using Cyanex 302® diluted with Exxsol D-100®. The results for one stage extraction were 98% Zn, 92% Ni and 77% Fe, with more than 95% of manganese remaining in solution. The experimental conditions for maximum impurity extraction and minimum manganese extraction were 6.0% v/v Cyanex 302® in the organic phase, 3 minutes of contacting between phases and an organic/aqueous phases ratio of 5.5. Under these conditions, the results obtained were 3.7% manganese extraction, 77.1% iron, 89.7% zinc and 31.3% nickel extraction.
The aim of this work was to treat a manganese sulfate solution obtained from the sulfuric acid leaching of Mina do Azul manganese ore (Brazil) for copper, nickel and iron removal by solvent extraction using Cyanex 302® diluted with Exxsol D-100®. The results for one stage extraction were 98% Zn, 92% Ni and 77% Fe, with more than 95% of manganese remaining in solution. The experimental conditions for maximum impurity extraction and minimum manganese extraction were 6.0% v/v Cyanex 302® in the organic phase, 3 minutes of contacting between phases and an organic/aqueous phases ratio of 5.5. Under these conditions, the results obtained were 3.7% manganese extraction, 77.1% iron, 89.7% zinc and 31.3% nickel extraction.
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heavy metals, solvent extraction, hydrometallurgy
heavy metals, solvent extraction, hydrometallurgy
Como citar
Carvalhido, Carlos A.; Martins, Afonso H..
HEAVY METALS REMOVAL FROM A MANGANESE SULFATE LEACH LIQUOR BY SOLVENT EXTRACTION USING A STATISTICAL APPROACH TO THE EXPERIMENTAL DESIGN,
p. 2094-2100.
In: 57º Congresso anual,
São Paulo, Brasil,
2002.
ISSN: 2594-5327, DOI 10.5151/2594-5327-C01546
