Process of calcining limestone lime in a rotary kiln
CA 1092785 A · Owner: Metallgesellschaft Aktiengesellschaft · Inventors: Steinhofel, Horst; Serbent, Harry; Lausch, Herbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process of calcining limestone or hydrated lime by a thermal treatment with hot gases in an oxidizing atmosphere in a rotary kiln through which the kiln atmosphere and the charge are contercurrently conducted and which is fed with fuel through shell burners. The process of the invention is characterized in that different fuels which serve to produce hot gases and which release SO2 and SO3 in different quantities per unit of calorific value are introduced into the rotary kiln in such a manner that the fuel which releases a larger quantity of SO2 and SO3 per unit of calorific value is supplied to the upper portion of the rotary kiln and the fuel which releases a smaller quantity of SO2 and …
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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 January 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 6, 1998.
- 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.