Process for demetallizing highly acid baths and use of said process for electropolishing special steel surfaces
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United States of America Patent
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Mar 16, 1999
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N/A
app pub date -
Mar 4, 1998
filing date -
Jun 9, 1995
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Abstract
The invention relates to a process for the demetallization of highly acidic baths based on phosphoric acid and sulphuric acid, and also to a process for the electropolishing of stainless-steel surfaces, in which a regeneration of, in particular, spent electrolyte compositions for electropolishing can be achieved by separate electrolytic reduction of Fe(III) to Fe(II) and subsequent removal of precipitates.
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