Treatment of material with hydrogen chloride
CA 1060662 A · Owner: Matthey Rustenburg Refiners (Pty) Ltd. · Inventors: Oliver, Raymond E.; Mcguire, George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel process is provided for the separation of components of base metal (e.g. Sb, Sn, Pb, Zn, Cu, N1 Fe or As) and silver from precious, metal components in mineral concentrates. The process comprises reacting together gaseous hydrogen and chlorine so as to produce a flame providing a reaction zone having a temperature in excess of 900°C to 2500°C and passing into the reaction zone of the flame the mineral concentrate in finely divided particulate form. In this reaction the silver and base metal, in the concentrate are converted into their volatile chlorides while the, precious metal components in the concentrate remain in a solid water-insolu-, ble form. This enables the facile …
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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 August 21, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 21, 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.