B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 37/03 (2006.01)
Patent
CA 2561659
A method of enhancing the recovery of useful coal or potassium chloride from screenbowl centrifuge separation operations comprising adding to the screenbowl centrifuge, from about 0.005 lbs active polymer/ton dry solids in centrifuge to about 0.70 lbs active polymer/ton dry solids in centrifuge, of an anionic copolymer, wherein said anionic copolymer is selected from the group comprising copolymers of acrylam ide and acrylic acid and the known salts thereof.
Cette invention concerne un procédé permettant d'améliorer la récupération de charbon utile et de chlorure de potassium à partir des opérations de séparation d'une centrifugeuse à bol plein perforé. Le procédé décrit dans cette invention consiste à ajouter à la centrifugeuse à bol plein perforé une quantité d'un copolymère anionique comprise entre environ 0,005 lbs et 0,70 lbs de polymères actifs/tonne matière sèche. Le copolymère anionique est choisi dans le groupe comprenant les copolymères de l'acrylamide et de l'acide acrylique et les sels connus de ceux-ci.
Dimas Peter A.
Mcgough Kenneth M.
Bcf Llp
Nalco Company
LandOfFree
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