公开(公告)号：US20180272359A1

公开(公告)日：2018-09-27

申请号：US15763978

申请日：2016-10-17

Applicant: CiDRA CORPORATE SERVICES INC

Inventor： Paul J. ROTHMAN ,  Mark R. FERNALD ,  Peter A. AMELUNXEN

IPC: B03D1/016 ,  B03D1/02

CPC classification number: B03D1/016 ,  B03C1/01 ,  B03D1/0046 ,  B03D1/023

Abstract: A selective recirculation circuit has a loading stage, a stripping stage and a filtering stage for use in processing a feed stream or slurry containing mineral particles. The stripping stage forms a first loop with the loading stage, and a second loop with the filtering stage. The loading stage has a loading mixer and a loading washing screen. The stripping stage has a stripping mixer and a stripping washing screen. The loading mixer receives the slurry and causes barren media in the circuit to contact with the slurry so that the mineral particles in the slurry are loaded onto the barren media. The media is directed to the stripping stage where the mineral particles are removed from the media. The barren media is recycled to the loading stage. The stripping solution recovered from the filtering stage is returned to the stripping stage and the mineral particles are discharged as concentrate.