Method and apparatus for continuous synthesis of aqueous aluminum sulfate solution from aluminum hydroxide sludge
CA 1328980 C · Owner: Ykk Corporation · Inventors: Yoshizaki, Hideo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method for continuous synthesis of an aqueous aluminum sulfate solution from aluminum sludge comprising the steps of feeding in turn, the aluminum, sludge arising in an aluminum surface treatment process waste, sulfuric acid arising during the removal step of coat in the process and an aluminum sulfuric acid solution arising during the recovery step of sulfuric acid in the process into a plurality of reaction tanks one by one so as to make reaction of those in the tanks, respectively, while mixing stirring and, heating at the temperature of 80°C to the boiling point of the reaction solution, and feeding part of the aluminum sulfuric acid solution into at …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 3, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 3, 2011.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.