Process for regeneration of electrolytes from pickle liquor, in particular of NA2S04 from pickle liquor for stainless steel
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United States of America Patent
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Jan 14, 2003
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N/A
app pub date -
Feb 15, 1996
filing date -
Feb 15, 1995
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Abstract
A process for regeneration of electrolytes, in particular Na.sub.2 SO.sub.4, from waste pickles created during picking of stainless steel, in particular stainless steel strips. The electrolytes are regenerated by adding Na.sub.x H.sub.y S.sub.z O.sub.v in an acid solution whereby Cr.sup.6+ is reduced to Cr.sup.3+. Variables x, y, z and v having the following values: x=0 to 2, y=0 to 2, z=1 to 6, v=2 to 6.
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