Process for Selective Separation of Indium from Acidic Aqueous Solutions

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This patent describes a method for selectively separating indium from acidic aqueous solutions that also contain metals such as zinc or iron. The invention uses specific 5-alkanoyl-8-hydroxyquinoline compounds as extractants to achieve efficient and selective extraction of indium from primary or secondary raw material sources.

Use CasesContent extracted from patent full text and abstract with AI.

• Recycling indium from electronic waste and other secondary sources
• Purification of indium during the production of display panels, LEDs, or photovoltaic cells
• Industrial extraction and recovery of indium from mineral ores or metal processing residues
• Environmental remediation of acidic waste streams containing indium

BenefitsContent extracted from patent full text and abstract with AI.

• High selectivity for indium extraction even in the presence of other metals like zinc or iron
• Improved efficiency in indium recovery processes, reducing waste and costs
• Facilitates recycling and sustainable sourcing of valuable indium
• Potentially lower environmental impact compared to less selective extraction methods

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Patent Abstract

Die Erfindung betrifft die Verwendung von 5-Alkanoyl-8-hydroxychinolinen der Formel (I)in einem Verfahren zur selektiven Abtrennung von Indium aus sauren wässrigen Laugungslösungen primärer oder sekundärer Rohstoffquellen, enthaltend Indium und mindestens eines der weiteren Metalle Zink oder Eisen,wobei RAlkyl der Länge C5 bis C12 ist undwobei R, Rund Runabhängig voneinander -H, -Me, -Et, -Pr, -OMe, -OEt, oder -OPr sind.