Method for leaching precious metals contained in waste denitrification catalyst using pressure leaching process
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United States of America Patent
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Feb 9, 2021
Grant Date -
Mar 16, 2017
app pub date -
Feb 27, 2015
filing date -
Mar 5, 2014
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Abstract
The present invention relates to a method for leaching precious metals contained in a waste denitrification catalyst by using a pressure leaching process, and more specifically, to a method for leaching precious metals contained in a waste denitrification catalyst by using a pressure leaching process, the method comprising the steps of: forming a mixture by mixing a waste denitrification catalyst with a sodium salt solution; and leaching vanadium and tungsten contained in the mixture by feeding the mixture into a sealed pressurized reactor, and then heating and stirring the mixture.
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