Submerged combustion in molten materials
CA 1290943 C · Owner: Union Carbide Corporation · Inventors: Rudloff, Frederick Allan; Masterson, Ian Francis; George, David Bechtel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for heating a molten material by injecting oxygen and a fuel into a molten bath of the material at a bath temperature above the spontaneous combustion temperature of the fuel at, least a portion of the fuel forming a shroud around the oxygen, and combusting the fuel to provide heat to the molten material. Where the molten material is impure copper the amount of oxygen and fuel injected may also be controlled to alternately oxidize and reduce the copper impurities and remove them from the bath. Solid material may be melted in the bath during any stage of heating or refining. In a preferred embodiment a portion of the fuel, forms a shroud around the oxygen during injection and the …
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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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 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.