Method and apparatus for controlled dewaterizing of coal treatment underflow
CA 1067628 A · Owner: American Minechem Corporation · Inventors: Messer, Leonard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coal treatment underflow of an aqueous slurry of fine solid particles is dewaterized by first adding to the aqueous slurry a preferably high molecular weight flocculant lyopnobic to water and lyophilic to fine solid particles to form a mixture. The mixture is charged to a thickener where flocculated solids are settled from the mixture and water separated from the mixture. During settling the flocculated, solids are preferably subjected to increased settling area and changing direction of liquid flow to increase the settling rate of the flocculated solids. A radiation beam is impinged on the flocculated solids transverse the direction of travel of the solids adjacent the discharge means …
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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 December 4, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 4, 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
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.