Search International and National Patent Collections

1. (WO2017034790) FLOCCULATION OF HIGH-SOLIDS MINERAL SLURRIES

Pub. No.:    WO/2017/034790    International Application No.:    PCT/US2016/046108
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Wed Aug 10 01:59:59 CEST 2016
IPC: B01D 21/01
B03D 3/06
C02F 1/56
C02F 11/14
Applicants: DOW GLOBAL TECHNOLOGIES LLC
Inventors: MOHLER, Carol E.
DOWNING, Domonique
GILLIS, Paul A.
HUGHES, Stephanie L.
MOORE, Jason S.
POINDEXTER, Michael K.
SANDERS, Thomas L.
SINGH, Harpreet
WITHAM, Cole A.
Title: FLOCCULATION OF HIGH-SOLIDS MINERAL SLURRIES
Abstract:
The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a mixture of polyethylene glycol and polyethylene oxide polymers, in particular a mixture of one or more low molecular mass polyethylene glycol with one or more high molecular mass polyethylene oxide. Said mixture of polyethylene glycol and polyethylene oxide polymers is useful for the treatment of suspensions of particulate material, especially waste mineral slurries. The invention is particularly suitable for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.