Rotary kiln for roasting ores, slags, ashes and other materials
CA 1070942 A · Owner: Vyzkumny Ustav Kovu · Inventors: Pedlik, Miroslav; Smalek, Josef; Reichrt, Vaclav
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotary kiln and method are provided for roasting ores; the kiln comprises a rotatably mountable kiln body having an inlet end and an outlet end; an inlet spiral duct mounted in the body at the inlet end and an outlet spiral duct mounted in said body at the outlet end and means associated with each spiral duct effective in use to maintain a controlled atmosphere in said body between the inlet duct and the outlet duct; suitably the ducts include baffles.
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 February 5, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 5, 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.