公开(公告)号：US20200318013A1

公开(公告)日：2020-10-08

申请号：US16753529

申请日：2018-10-12

Applicant: Dow Global Technologies LLC

Inventor： Lizbeth Rostro ,  Wu Chen ,  Paul A. Gillis ,  Michael K. Poindexter ,  Jason A. Tubbs ,  Cole A. Witham

IPC: C10G1/04 ,  C10G33/04 ,  C02F11/14 ,  C02F1/56 ,  C08L71/02

Abstract: The present invention relates to a method for transporting, flocculating, and dewatering an aqueous tailings stream. Said method comprises adding a flocculant composition comprising a poly(ethylene oxide) (co)polymer with the aqueous tailings stream wherein the aqueous tailings stream has 15 wt % or less solids. Said method is particularly useful for the treatment of suspensions of particulate material, especially waste mineral slurries, especially for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.

公开(公告)号：US20210371316A1

公开(公告)日：2021-12-02

申请号：US16319062

申请日：2017-09-14

Applicant: Dow Global Technologies LLC

Inventor： Paul A. Gillis ,  Jason S. Moore ,  Michael K. Poindexter ,  Jason A. Tubbs

IPC: C02F11/147 ,  B01D21/01 ,  B01D21/26 ,  C02F11/127 ,  C02F11/16

Abstract: The present invention relates to an in-line blending apparatus and use therein for flocculating and dewatering an aqueous mineral suspension. Said method comprises blending an aqueous mineral suspension and a poly(ethylene oxide) (co)polymer using a progressive cavity pump. Said method is particularly useful for the treatment of suspensions of particulate material, especially waste mineral slurries, especially for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.