Method for working-up metal containing waste products
CA 1193446 A · Owner: Boliden Aktiebolag · Inventors: Lundstrom, Malkolm S.; Leirnes, Johan S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for converting metalcontaining waste material having substantial quantities of organic constiuents such as plastics, rubber, paper and greases to a product from which, metal can readily be recovered. The waste material is introduced into a reactor vessel arranged for rotation about its longitudinal axis and provided with bottom and a common charge and discharge opening whereafter the reactor vessel is rotated with its axis inclined to the horizontal plane at an angle of less than 90°. The reactor vessel is held during this rotation at a temperature which is sufficiently high to expel organic constituents in the form of a combustible gas far as long as such …
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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 September 17, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2002.
- 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.