公开(公告)号：US20170247271A1

公开(公告)日：2017-08-31

申请号：US15328549

申请日：2015-07-31

Applicant: Dow Global Technologies LLC

Inventor： Paul A. Gillis ,  Jason S. Moore ,  Billy G. Smith ,  Michael D. Cloeter ,  Michael K. Poindexter ,  Carol E. Mohler ,  Wu Chen ,  Cole A. Witham ,  Justice Alaboson ,  Shankhadeep Das ,  Harpreet Singh

IPC: C02F1/56 ,  C02F11/16 ,  C10G1/04 ,  B01F7/22 ,  B01F7/00 ,  C02F11/14 ,  C02F11/12

CPC classification number: C02F1/56 ,  B01F7/00141 ,  B01F7/00258 ,  B01F7/003 ,  B01F7/00341 ,  B01F7/0035 ,  B01F7/00633 ,  B01F7/0075 ,  B01F7/00908 ,  B01F7/22 ,  B01F2215/0052 ,  C02F11/127 ,  C02F11/14 ,  C02F11/16 ,  C02F2103/10 ,  C02F2103/365 ,  C02F2301/022 ,  C10G1/045 ,  C10G1/047

Abstract: The present invention relates to a method for flocculating and dewatering oil sands fine tailings. Said method comprises mixing the aqueous mineral suspension with a poly(ethylene oxide) (co)polymer to form a dough-like material. The material is then dynamically mixed in an in-line reactor to break down the dough-like material to form microflocs having an average size of 1 to 500 microns, and to release water. The internal diameter of the in-line reactor is at most five times the internal diameter of the inlet pipe of the reactor. The suspension of microflocs has a viscosity of at most 1000 cP and a yield stress of at most 300 Pa.