公开(公告)号：US10661282B2

公开(公告)日：2020-05-26

申请号：US15707255

申请日：2017-09-18

Applicant: KEMIRA OYJ

Inventor： Duane C. Wilson ,  Xihui Yin ,  Stephanie Kofsky-Wofford ,  Anna I. Casasús

IPC: B03D1/016 ,  B03D1/02 ,  C08L5/14 ,  C08B37/00

Abstract: Methods for preparing agglomerated hemicellulose compositions are provided. Agglomerated hemicellulose compositions comprising agglomerates are also provided herein. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and a depressant composition comprising an agglomerated hemicellulose composition.

公开(公告)号：US20180099883A1

公开(公告)日：2018-04-12

申请号：US15728786

申请日：2017-10-10

Applicant: Kemira Oyj

Inventor： Duane C. Wilson ,  Thomas Fenderson ,  Igal Maasen ,  Sukhjit Aujla

IPC: C02F1/56 ,  C08L33/26 ,  C08F220/56

CPC classification number: C02F1/56 ,  C02F11/14 ,  C02F2103/10 ,  C08F220/56 ,  C08L33/26 ,  C08L2205/025 ,  C08F220/06

Abstract: The present embodiments generally relate to the use of one or more polymers, e.g., one or more dry acid polymers and/or one or more dry acid polymers with salt, as flocculants, generally for treating tailings, e.g., oil sands tailings, in need of solid-liquid separation, e.g., in order to efficiently recycle water and/or to reduce the volume of tailings which may be transferred to a tailings pond and/or a dedicated disposal area.

公开(公告)号：US11001513B2

公开(公告)日：2021-05-11

申请号：US15728786

申请日：2017-10-10

Applicant: Kemira Oyj

Inventor： Duane C. Wilson ,  Thomas Fenderson ,  Igal Maasen ,  Sukhjit Aujla

IPC: C02F1/56 ,  C02F11/14 ,  C08F220/56 ,  C08L33/26 ,  C02F103/10

Abstract: The present embodiments generally relate to the use of one or more polymers, e.g., one or more dry acid polymers and/or one or more dry acid polymers with salt, as flocculants, generally for treating tailings, e.g., oil sands tailings, in need of solid-liquid separation, e.g., in order to efficiently recycle water and/or to reduce the volume of tailings which may be transferred to a tailings pond and/or a dedicated disposal area.

公开(公告)号：US10589293B2

公开(公告)日：2020-03-17

申请号：US15275869

申请日：2016-09-26

Applicant: Kemira Oyj

Inventor： Duane C. Wilson

IPC: C08B31/18 ,  B03D1/016 ,  B03D1/02 ,  C08B37/00 ,  C08L3/10 ,  C08L5/00

Abstract: Depressants comprising a moderately oxidized polysaccharide having about 0.05 to about 4.5 mmol of anionic charge per gram at a pH of about 6 to about 7, or about 0.2 to about 5 mmol of anionic charge per gram at a pH of about 10 to about 11.2, are provided. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more of the depressants.

公开(公告)号：US20200238302A1

公开(公告)日：2020-07-30

申请号：US16846819

申请日：2020-04-13

Applicant: KEMIRA OYJ

Inventor： Duane C. Wilson ,  Xihui Yin ,  Stephanie Kofsky-Wofford ,  Anna I. Casasús

IPC: B03D1/016 ,  C08B37/00 ,  B03D1/02 ,  C08L5/14

Abstract: Methods for preparing agglomerated hemicellulose compositions are provided. Agglomerated hemicellulose compositions comprising agglomerates are also provided herein. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and a depressant composition comprising an agglomerated hemicellulose composition.

公开(公告)号：US20180078951A1

公开(公告)日：2018-03-22

申请号：US15707255

申请日：2017-09-18

Applicant: KEMIRA OYJ

Inventor： Duane C. Wilson ,  Xihui Yin ,  Stephanie Kofsky-Wofford ,  Anna I. Casasús

IPC: B03D1/016 ,  C08B37/00

CPC classification number: B03D1/016 ,  B03D1/02 ,  B03D2201/06 ,  B03D2203/02 ,  C08B37/0057 ,  C08L5/14

Abstract: Methods for preparing agglomerated hemicellulose compositions are provided. Agglomerated hemicellulose compositions comprising agglomerates are also provided herein. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and a depressant composition comprising an agglomerated hemicellulose composition.

公开(公告)号：US20170100724A1

公开(公告)日：2017-04-13

申请号：US15275869

申请日：2016-09-26

Applicant: Kemira Oyj

Inventor： Duane C. Wilson

IPC: B03D1/016 ,  B03D1/02 ,  C08B31/18

Abstract: Depressants comprising a moderately oxidized polysaccharide having about 0.05 to about 4.5 mmol of anionic charge per gram at a pH of about 6 to about 7, or about 0.2 to about 5 mmol of anionic charge per gram at a pH of about 10 to about 11.2, are provided. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more of the depressants.

公开(公告)号：US11560323B2

公开(公告)日：2023-01-24

申请号：US17230494

申请日：2021-04-14

Applicant: KEMIRA OYJ

Inventor： Duane C. Wilson ,  Thomas Fenderson ,  Igal Maasen ,  Sukhjit Aujla

IPC: C02F1/56 ,  C02F11/147 ,  C02F11/14 ,  C08F220/56 ,  C08L33/26 ,  C02F103/10

Abstract: The present embodiments generally relate to the use of one or more polymers, e.g., one or more dry acid polymers and/or one or more dry acid polymers with salt, as flocculants, generally for treating tailings, e.g., oil sands tailings, in need of solid-liquid separation, e.g., in order to efficiently recycle water and/or to reduce the volume of tailings which may be transferred to a tailings pond and/or a dedicated disposal area.

公开(公告)号：US20210300803A1

公开(公告)日：2021-09-30

申请号：US17230494

申请日：2021-04-14

Applicant: KEMIRA OYJ

Inventor： Duane C. Wilson ,  Thomas Fenderson ,  Igal Maasen ,  Sukhjit Aujla

IPC: C02F1/56 ,  C02F11/14 ,  C08F220/56 ,  C08L33/26

Abstract: The present embodiments generally relate to the use of one or more polymers, e.g., one or more dry acid polymers and/or one or more dry acid polymers with salt, as flocculants, generally for treating tailings, e.g., oil sands tailings, in need of solid-liquid separation, e.g., in order to efficiently recycle water and/or to reduce the volume of tailings which may be transferred to a tailings pond and/or a dedicated disposal area.

公开(公告)号：US20180036743A1

公开(公告)日：2018-02-08

申请号：US15665994

申请日：2017-08-01

Applicant: KEMIRA OYJ

Inventor： Duane C. Wilson ,  Xihui Yin ,  Scott Rosencrance ,  Anna Casasus

IPC: B03D1/02 ,  B03D1/016

CPC classification number: B03D1/02 ,  B03D1/008 ,  B03D1/01 ,  B03D1/016 ,  B03D2201/007 ,  B03D2201/02 ,  B03D2201/06 ,  B03D2203/02 ,  B03D2203/04

Abstract: Processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, are provided, wherein the process comprises carrying out a flotation process in the presence of one or more chelating agents, one or more collecting agents, one or more types of multivalent metal ions, and optionally, one or more depressants, in a solution, wherein the one or more chelating agents are capable, alone or as a group of compounds, of sequestering a metal or metal ion in the form of a metal-chelating agent complex that remains at least partially soluble in the solution.