Method for recycling indium
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United States of America Patent
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Oct 24, 2017
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app pub date -
Jul 9, 2015
filing date -
Mar 18, 2015
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Abstract
Provided is a method for recycling indium from a panel on which an electrode layer made of indium tin oxide (ITO) is formed, comprising:
- S1 —removing each of pattern layers on the panel to obtain particles formed by the pattern layers;S2 —adding an acid solution to the particles so as to dissolve the substances which can be dissolved in the acid solution, and then filtering to give a solution containing indium ion;S3 —adding an alkaline solution to the solution obtained in step S2, so that metal ions other than indium ion can form precipitates with hydroxyl ion;S4 —filtering off the precipitates formed in step S3; andS5 —evaporating the solution obtained in step S4 to obtain crystals of indium salt. The method improves the reusing rate of the defective panels, is helpful to environment protection, and saves resources.
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