Method for reclaiming metal sulfate-containing waste sulfuric acid
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United States of America Patent
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Jan 8, 2002
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N/A
app pub date -
Mar 28, 1995
filing date -
Jul 30, 1993
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Expired
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Abstract
For the purpose of efficiently and easily regenerating a sulfuric acid solution having a high concentration and a low impurity content from a metal sulfate-containing waste sulfuric acid solution and waste liquor formed during acid cleaning which are discharged from titanium (IV) oxide-production process carried out according to the sulfuric acid method, titanium present in the metal sulfate-containing waste sulfuric acid solution is removed through a solvent-extraction treatment and then the solution obtained after the solvent-extraction is subjected to a diffusive dialysis treatment.
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