Method of obtaining copper from sulphurized concentrates
CA 1105410 A · Owner: Societe Miniere Et Metallurgique De Penarroya · Inventors: Demarthe, Jean-Michel; Sonntag, Alain; Georgeaux, Andre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The specification discloses a method for the treatment of sulphurized copper concentrates which, treatment is particularly applicable to copper ores such as bornite, chalcopyrite and chalcocite. It is well-known that these copper-bearing ores are always accompanied by gangue or other types of ore such as pyrites, quartz and calcite the, major portion of this gangue being eliminated during the preliminary stage in the concentration of the ore. A concentrate is thus obtained which contains for example approximately 15 to 50% of copper and 5 to 35% of iron. The specification discloses a method which comprises the following stages, a) lixiviation of said sulphurized concentrate by an aqueous …
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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 July 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.