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公开(公告)号：US20180071752A1
公开(公告)日：2018-03-15
申请号：US15538471
申请日：2015-12-18
Applicant: KEMIRA OYJ
Inventor： Lucas Moore , Xihui Yin , Jean Robert Durand
CPC classification number: B03D1/016 , B03D1/008 , B03D1/01 , B03D2201/06 , B03D2203/02
Abstract: Depressants comprising a polymer comprising: a) recurring units of one or more acrylamide monomers; b) recurring units of one or more monomers selected from hydroxyalkyl alkylacrylate, allyloxyalkyldiol, allyloxyethanol, trimethylolpropane allyl ether, and 2-hydroxy ethyl acrylate; and optionally, c) recurring units of one or more acrylic acid monomers 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.
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公开(公告)号：US20190381428A1
公开(公告)日：2019-12-19
申请号：US16480547
申请日：2018-02-07
Applicant: Kemira OYJ
Inventor： Marcelo Moreira Da Costa , Xihui Yin , Sergio Cabo , Luis Irineu
Abstract: Selective flocculants for beneficiation of bauxite ore comprise one or more types of polysaccharides comprising one or more types of pentosan units. Also disclosed are processes for enriching aluminum hydroxide and alumina from bauxite ore comprising the aluminum hydroxide and alumina and clay materials and and/or siliceous gangue, wherein the process comprises carrying out a selective flocculation process in the presence of one or more of the selective flocculants.
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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
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.
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公开(公告)号：US20170283515A1
公开(公告)日：2017-10-05
申请号：US15473715
申请日：2017-03-30
Applicant: Kemira Oyj
Inventor： Xihui Yin , Duane C. Wilson , Stephanie A. Kofsky-Wofford , Marcelo Moreira da Costa
CPC classification number: C08B37/0057 , B03D1/016 , B03D2201/02 , B03D2201/06 , B03D2203/02 , C08H8/00 , C08L5/00 , C08L89/00 , C08L97/005
Abstract: Multi-extraction methods for preparing hemicellulose compositions are provided. Depressant compositions comprising hemicellulose compositions 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 hemicellulose.
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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
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.
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Patent Agency Ranking
公开(公告)号：US20170368480A1
公开(公告)日：2017-12-28
申请号：US15538446
申请日：2015-12-18
Applicant: KEMIRA OYJ
Inventor： Lucas Moore , Xihui Yin , Jean Robert Durand , Marcelo Moreira da Costa
IPC: B01D21/01 , C08L33/02 , C08F220/56 , C08L33/26 , B03D3/06
CPC classification number: B01D21/01 , B03D3/06 , C08F220/56 , C08L33/02 , C08L33/26 , C08F220/20 , C08F220/06
Abstract: Selective flocculants comprise a polymer comprising recurring units of one or more acrylamide monomers; recurring units of one or more monomers selected from hydroxyalkyl alkylacrylate, allyloxyalkyldiol, allyloxyethanol, trimethylolpropane allyl ether, and 2-hydroxy ethyl acrylate; and optionally, recurring units of one or more acrylic acid monomers. 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 selective flocculation process in the presence of one or more of the selective flocculants.
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7.发明授权公开(公告)号：US11612898B2
公开(公告)日：2023-03-28
申请号：US16329404
申请日：2017-08-30
Applicant: KEMIRA OYJ
Inventor： Marcelo Moreira Costa , Xihui Yin , Sergio Cabo
IPC: B03D1/016 , B03D1/06 , C02F1/24 , C08F220/34 , C08F220/56 , C08G59/10 , C08L39/04 , C08L79/02 , B03D1/00 , C02F103/10 , B03D1/01 , C02F1/56 , C02F101/20
Abstract: The present embodiments generally relate to a technology for improving Cu/Mo grade by the addition of cationic polymers as selective depressants for acid insoluble matters, e.g., silicates and/or clays, in the flotation circuit. Various types of cationic polymers are demonstrated to be effective depressants including polyamine, polyDADMAC, and cationic polyacrylamide. 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 cationic polymer depressants.
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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
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.
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公开(公告)号：US20190381518A1
公开(公告)日：2019-12-19
申请号：US16480548
申请日：2018-02-07
Applicant: Kemira OYJ
Inventor： Sergio Cabo , Marcelo Moreira Da Costa , Xihui Yin
Abstract: Selective polysaccharide agents or flocculants comprise one or more types of polysaccharides comprising one or more types of pentosan units. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue and/or other minerals, wherein the process comprises treating the ore in an aqueous medium with one or more selective polysaccharide agents or flocculants comprising one or more types of polysaccharides comprising one or more types of pentosan units.
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10.发明申请公开(公告)号：US20190217311A1
公开(公告)日：2019-07-18
申请号：US16329404
申请日：2017-08-30
Applicant: KEMIRA OYJ
Inventor： Marcelo Moreira Costa , Xihui Yin , Sergio Cabo
IPC: B03D1/016 , C08F220/34 , C08F220/56 , C08L39/04 , C08L79/02 , C08G59/10
CPC classification number: B03D1/016 , B03D1/00 , B03D1/01 , B03D1/06 , B03D2201/002 , B03D2201/06 , B03D2203/02 , B03D2203/025 , C02F1/24 , C02F1/56 , C02F2101/20 , C02F2103/10 , C08F220/34 , C08F220/56 , C08G59/10 , C08L39/04 , C08L79/02
Abstract: The present embodiments generally relate to a technology for improving Cu/Mo grade by the addition of cationic polymers as selective depressants for acid insoluble matters, e.g., silicates and/or clays, in the flotation circuit. Various types of cationic polymers are demonstrated to be effective depressants including polyamine, polyDADMAC, and cationic polyacrylamide. 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 cationic polymer depressants.
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