Method of concentration of rebellious oxidized copper ores
CA 1289274 C · Owner: Sim, Svetlana P. · Inventors: Bekturganov, Nuraly S.; Chechetkin, Vladimir S.; Belyaev, Sergei V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method comprises preparation of a pulp its, sulphidizing and flotation. Sulphidizing of the pulp is carried out with molten sulphur at a temperature of 115-180°C and pressure 1.5-10 atm. in the presence of sodium sulphate or sodium chloride additives.
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 September 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2008.
- 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.