公开(公告)号：US11926532B2

公开(公告)日：2024-03-12

申请号：US17572920

申请日：2022-01-11

Applicant: University of Kansas

Inventor： Mark Brandon Shiflett ,  David Richard Corbin ,  Andrew M. Danby ,  Bala Subramaniam

IPC: C01G23/053

CPC classification number: C01G23/053

Abstract: Provided are processes for producing metal oxides, including pigmentary TiO2. In embodiments, a process for producing a metal oxide comprises combining a metal halide and an oxidant in a liquid phase medium under conditions to oxidize the metal halide in the liquid phase medium to produce a metal oxide therefrom.

公开(公告)号：US12049683B2

公开(公告)日：2024-07-30

申请号：US17287258

申请日：2019-10-22

Applicant: University of Kansas

Inventor： Mark Brandon Shiflett ,  David Richard Corbin ,  Ankit Verma

IPC: C22B7/00 ,  C22B26/12 ,  H01M10/54

CPC classification number: C22B7/008 ,  C22B7/007 ,  C22B26/12 ,  H01M10/54

Abstract: Methods for recovering metals from metal-containing materials are provided. The metal-containing material comprises either Co and Li (e.g., an electrode material from a spent lithium ion battery) or Fe and Al (e.g., bauxite). The metal-containing material is exposed to a leaching solution comprising ammonium hydrogen oxalate, oxalic acid, or both, to provide a solid composed of either cobalt oxalate or iron oxalate, and a solution of either lithium oxalate or aluminum oxalate. The solid is processed to provide either cobalt oxide or iron oxide; the solution is processed to provide either a lithium precipitate or an aluminum precipitate, and a filtrate comprising an oxalate; and the filtrate comprising the oxalate is processed to recover ammonium hydrogen oxalate, oxalic acid, or both. The method further comprises repeating the digestion step with the recovered ammonium hydrogen oxalate, the recovered oxalic acid, or both.

公开(公告)号：US20220349025A1

公开(公告)日：2022-11-03

申请号：US17243032

申请日：2021-04-28

Applicant: University of Kansas

Inventor： Mark Brandon Shiflett ,  David Richard Corbin ,  Ankit Verma

IPC: C22B21/00 ,  C01F7/20 ,  C01G49/02 ,  C22B3/12

Abstract: Methods for recovering a metal from a metal-containing material are provided. In embodiments, such a method comprises exposing a metal-containing material to a leaching solution comprising a solvent and a binoxalate, a tetraoxalate, or a combination thereof, under conditions to provide a leachate comprising a soluble metal oxalate; inducing precipitation of a metal-containing precipitate comprising the metal of the soluble metal oxalate from the leachate; and recovering the metal-containing precipitate.

公开(公告)号：US20220220002A1

公开(公告)日：2022-07-14

申请号：US17572920

申请日：2022-01-11

Applicant: University of Kansas

Inventor： Mark Brandon Shiflett ,  David Richard Corbin ,  Andrew M. Danby ,  Bala Subramaniam

IPC: C01G23/053

Abstract: Provided are processes for producing metal oxides, including pigmentary TiO2. In embodiments, a process for producing a metal oxide comprises combining a metal halide and an oxidant in a liquid phase medium under conditions to oxidize the metal halide in the liquid phase medium to produce a metal oxide therefrom.

公开(公告)号：US12054805B2

公开(公告)日：2024-08-06

申请号：US17243032

申请日：2021-04-28

Applicant: University of Kansas

Inventor： Mark Brandon Shiflett ,  David Richard Corbin ,  Ankit Verma

IPC: C22B21/00 ,  C01F7/20 ,  C01G49/02 ,  C22B3/12

CPC classification number: C22B21/0015 ,  C01F7/20 ,  C01G49/02 ,  C22B3/12

Abstract: Methods for recovering a metal from a metal-containing material are provided. In embodiments, such a method comprises exposing a metal-containing material to a leaching solution comprising a solvent and a binoxalate, a tetraoxalate, or a combination thereof, under conditions to provide a leachate comprising a soluble metal oxalate; inducing precipitation of a metal-containing precipitate comprising the metal of the soluble metal oxalate from the leachate; and recovering the metal-containing precipitate.

公开(公告)号：US20210395857A1

公开(公告)日：2021-12-23

申请号：US17287258

申请日：2019-10-22

Applicant: University of Kansas

Inventor： Mark Brandon Shiflett ,  David Richard Corbin ,  Ankit Verma

IPC: C22B7/00 ,  C22B26/12 ,  H01M10/54

Abstract: Methods for recovering metals from metal-containing materials are provided. The metal-containing material comprises either Co and Li (e.g., an electrode material from a spent lithium ion battery) or Fe and Al (e.g., bauxite). The metal-containing material is exposed to a leaching solution comprising ammonium hydrogen oxalate, oxalic acid, or both, to provide a solid composed of either cobalt oxalate or iron oxalate, and a solution of either lithium oxalate or aluminum oxalate. The solid is processed to provide either cobalt oxide or iron oxide; the solution is processed to provide either a lithium precipitate or an aluminum precipitate, and a filtrate comprising an oxalate; and the filtrate comprising the oxalate is processed to recover ammonium hydrogen oxalate, oxalic acid, or both. The method further comprises repeating the digestion step with the recovered ammonium hydrogen oxalate, the recovered oxalic acid, or both.