Process and apparatus for cleaning slag from garbage incinerators
CA 1330654 C · Owner: Leo Schwyter Ag · Inventors: Schwyter, Leo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
After quenching, the slag that is generated in garbage and waste incinerators is subjected to an additional washing process in a washer unit (2). During the wash process harmful, substances such as chlorides and heavy metals for example, are, washed out of the slag. The subsequent separation of the water from the slag is effected in a separator system (4) and in a drying system (7). The slag is dried to a maximum water content of 30% and the fine components with a grain size of less than 2 mm are removed from the slag either during or after the drying process. These fine components and the wash water sludge contain practically all the soluble harmful substances and must be, processed or …
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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 July 12, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 12, 2011.
- 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.