Method for the removal of copper from a zinc sulphate solution
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United States of America Patent
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Mar 23, 2010
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Oct 22, 2004
filing date -
Nov 7, 2003
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Abstract
The purpose of the invention is to remove copper selectively from a concentrated zinc sulphate solution by ion exchange. The method enables a significant reduction in the use of zinc powder during the solution purification of zinc sulphate solution and makes possible to avoid usage of arsenic or antimony trioxides as a precipitation chemical. The method is to be combined with the chloride removal that occurs as a sub-stage of solution purification.
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