Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Utilizing mist prevention
Patent
1997-06-27
1999-12-07
Gorgos, Kathryn
Electrolysis: processes, compositions used therein, and methods
Electrolytic coating
Utilizing mist prevention
204279, 204471, 205283, 205334, 205560, 205571, 205574, 205597, 205602, 205640, C25D 2111
Patent
active
059977116
ABSTRACT:
Disclosed is a method for reducing metal acid or salt evolved from electrolytic baths housed in electrolytic tanks during electrolytic operations. This method involves covering all of the surface of the electrolytic bath with a layer of shredded foam (e.g., polymeric foam, metal foam, glass foam, or vitreous material foam). The shredded foam is irregular in shape, lacking in uniform particle size, is inert to the electrolytic operation, and floats at the surface of the electrolytic bath. Desirably, the layer of shredded foam is about 3 to 4 inches (76-102 mm) in thickness. Examples of specific processes benefiting from the present invention are anodizing, electroplating, electrowinning, and electrophoresis operations.
REFERENCES:
patent: 2223973 (1940-12-01), Teats
patent: 3657080 (1972-04-01), Chessin
patent: 3755095 (1973-08-01), Boycott, Jr.
patent: 3948747 (1976-04-01), Cordiana et al.
patent: 5104496 (1992-04-01), Dupree
C.T. Thomas, "The Conservation of Chromic Acid in Chromium Plating", The Monthly Review, pp. 720-721, Aug. 1943.
C.T. Thomas, The Conservation of Chromic Acid in Chromium Plating, The Monthly Review, American Electroplating Society, pp. 720, 722, Aug. 1943.
Arthur Stern et al, The Use of Plastic Beads on Chrome Plating Tanks, News Notes, pp. 67N-68N, date not available.
AON International, Inc.
Gorgos Kathryn
Leader William T.
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