Process for the recovery of cuprous chloride in the presence of metal impurities
CA 1066870 A · Owner: Cyprus Metallurgical Processes Corporations · Inventors: Kruesi, Paul R.; Goens, Duane N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is disclosed for separating cuprous chloride from a solution comprising cuprous chloride and one or more of a number of metal impurities, the process comprising crystallizing the cuprous chloride from the solution in the presence of copper as cupric chloride in a concentration of a least about 20 grams per liter. In one embodiment, the process is employed for recovering substantially pure copper from copper sulfide concentrates containing one or more metal impurities the basic process com-, prising leaching the copper sulfide concentrates with ferric chloride to produce a leach solution comprising cuprous chloride cupric chloride, ferrous chloride and the metal impurities crys-, …
Read the whole patent
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 November 27, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 27, 1996.
- 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
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.