Conversion of molybdenite concentrate to ferro- molybdenum and simultaneous removal of impurities by direct reduction with sulfide forming reducing agents
CA 1090140 A · Owner: Ferrolegeringar Trollhatteverken Ab · Inventors: Wallen, Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A molybdenite concentrate is reduced by adding it to a melt of ferro-manganese or a melt which is a mixture of ferro-manganese and iron. This results in a metal phase containing molybdenum and iron which have been purged of copper and sulfur, and a slag phase which contains manganese copper and sulfur. The phases are then separated.
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 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 1997.
- 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.