公开(公告)号：US20220380865A1

公开(公告)日：2022-12-01

申请号：US17770499

申请日：2020-10-29

申请人： TNG LIMITED

发明人： Damian Edward Gerard CONNELLY ,  Denis Stephen YAN ,  Paul Edward BURTON ,  Herbert WEISSENBAECK

IPC分类号： C22B34/22 ,  C22B3/06

摘要： A vanadium recovery process (10), the process comprising: (i) passing an ore or concentrate (12) containing vanadium, titanium and iron to a reduction step (18) forming a reduced ore or concentrate; (ii) passing the reduced ore or concentrate to a ferric leach step (22) to produce a ferric leachate (26) containing iron and a ferric leach residue (30) containing vanadium; (iii) passing the ferric leachate (26) to a ferric oxidation step (28) producing an iron product (68); (iv) passing the ferric leach residue (30) to an acid leach step (32) producing an acid leachate (44) containing vanadium and an acid leach residue (36) containing titanium; (v) Passing the acid leachate (44) to a vanadium recovery step (46, 48) from which a vanadium product is produced; and (vi) Passing the acid leach residue (36) to a titanium pigment production process (42) whereby a titanium dioxide pigment is produced.

公开(公告)号：US20210403339A1

公开(公告)日：2021-12-30

申请号：US17291106

申请日：2019-11-07

申请人： TNG LIMITED

发明人： Damian Edward Gerard CONNELLY

IPC分类号： C01G23/053 ,  C01G23/08

摘要： A method for the preparation of titanium dioxide, the method comprising the steps of subjecting a titanium containing leach residue to a concentrated sulfuric acid digest step; and in turn subjecting that residue to a leach in dilute sulfuric acid, whereby a black liquor is obtained and from which titanium dioxide is in turn obtained.

公开(公告)号：US11535910B2

公开(公告)日：2022-12-27

申请号：US16494567

申请日：2018-04-04

申请人： TNG LIMITED

发明人： Damian Edward Gerard Connelly ,  Denis Stephen Yan

IPC分类号： C22B5/10 ,  C22B3/10 ,  C22B34/22

摘要： A method (10) for preparing a leach feed material, the method (10) comprising the steps of: passing an ore or concentrate containing vanadium and iron to a reduction step (12) to form a reduced ore or concentrate; and passing the reduced ore or concentrate to a ferric leach step (14) to produce a ferric leachate containing iron and a ferric leach residue containing vanadium, wherein the ferric leach residue is suitable for use as the leach feed material for extracting and recovering vanadium.