公开(公告)号：US20240149277A1

公开(公告)日：2024-05-09

申请号：US18546436

申请日：2022-02-15

Applicant: TESSENDERLO KERLEY, INC.

Inventor： Melissa RHODEHOUSE ,  Mukund VASUDEVAN ,  Michael HOJJATIE ,  Paul MORAN

IPC: B03D1/012 ,  B03D1/008 ,  B03D1/01 ,  B03D1/014 ,  B03D1/018 ,  C07C333/14

CPC classification number: B03D1/012 ,  B03D1/008 ,  B03D1/01 ,  B03D1/014 ,  B03D1/018 ,  C07C333/14 ,  B03D2201/02 ,  B03D2201/06 ,  B03D2203/02

Abstract: A process for recovering a first mineral comprising the steps of: (a) providing a pulp comprising solids and water, wherein the solids comprise the first mineral; (b) adding a first depressant to the pulp; (c) subjecting the pulp to a froth flotation process to produce a froth comprising the first mineral; and (d) recovering the froth; characterized in that the first mineral is a sulfide mineral, and the first depressant consists of one or more dithiocarbamic acids or salts thereof of formula (I). A composition comprising the first depressant, and further comprising one, two or three of a collector, a second depressant and a mineral. The use of a dithiocarbamic acid or salt thereof of formula (I). The dithiocarbamic acid or salt thereof of formula (I) which is 3-ammo-1,2-propanediol dithiocarbamic acid or a salt thereof, 2-amino-2-methyl-1,3,-propanediol dithiocarbamic acid or a salt thereof, or N-phenylethylenediamine dithiocarbamic acid or a salt thereof.