Acid Recovery: Ten tips for preventing corrosion on zirconium heat exchangers and other metallic components

Pickling is an economical method of using acid to remove impurties and scale from metals for etching surfaces in preparation for galvanizing, painting, etc. Wide variations are possible in the type, strength, and temperature of the acid solutions used. Sulfuric acid in the 5 to 40% concentration ran...

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Veröffentlicht in:Metal finishing 2005-05, Vol.103 (5), p.65-71
1. Verfasser: Sparkowich, Steve
Format: Artikel
Sprache:eng
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Zusammenfassung:Pickling is an economical method of using acid to remove impurties and scale from metals for etching surfaces in preparation for galvanizing, painting, etc. Wide variations are possible in the type, strength, and temperature of the acid solutions used. Sulfuric acid in the 5 to 40% concentration range is a common pickling acid for iron and steel. Sulfuric acid pickling tanks are typically heated to a temperature between 140DGF (60DGC) and 200DGF (93DGC) using steam or hot water circulating through a heat exchanger.
ISSN:0026-0576