Method and apparatus for electrostatic separation of crude potassium salts containing carnallite
CA 1066230 A · Owner: Kali Und Salz Ag · Inventors: Knappe, Rudolf; Geisler, Iring; Fricke, Gunter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and apparatus for electrostatic separation of carnallite containing, ground, conditioned crude potassium salts, in air having relative humidity of 5 to 25% in two, stages, by means of high voltage electric fields characterized, in that a carnallite containing fraction is separated from the feed of crude potassium salts in a first separation path whose field length (free fall path) is between 0.4 to 1.2 meters and that a middlings fraction low in carnallite grain content is directed through a second separation path of 1.5 to 2.5 m of field length (free fall path), wherein a sylvine containing preconcentrate, a middlings fraction and rejects fraction are separated from each other, said …
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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 November 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 13, 1996.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.