US20080257827A1 - Use of silicon-containing polymers to improve red mud flocculation in the bayer process - Google Patents

Use of silicon-containing polymers to improve red mud flocculation in the bayer process Download PDF

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Publication number
US20080257827A1
US20080257827A1 US12/052,415 US5241508A US2008257827A1 US 20080257827 A1 US20080257827 A1 US 20080257827A1 US 5241508 A US5241508 A US 5241508A US 2008257827 A1 US2008257827 A1 US 2008257827A1
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silicon
flocculant
hydroxamated
group
containing polymer
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US12/052,415
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English (en)
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Qi Dai
Donald Paul Spitzer
Howard I. Heitner
H-L Tony Chen
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Cytec Technology Corp
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Cytec Technology Corp
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Priority to US12/052,415 priority Critical patent/US20080257827A1/en
Assigned to CYTEC TECHNOLOGY CORP. reassignment CYTEC TECHNOLOGY CORP. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SPITZER, DONALD PAUL, CHEN, H-L TONY, HEITNER, HOWARD I., DAI, QI
Publication of US20080257827A1 publication Critical patent/US20080257827A1/en
Priority to US13/363,712 priority patent/US8906239B2/en
Priority to US14/929,914 priority patent/US20160052807A1/en
Abandoned legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F230/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
    • C08F230/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal
    • C08F230/08—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon
    • C08F230/085—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon the monomer being a polymerisable silane, e.g. (meth)acryloyloxy trialkoxy silanes or vinyl trialkoxysilanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D3/00—Differential sedimentation
    • B03D3/06—Flocculation
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
    • C01F7/0646—Separation of the insoluble residue, e.g. of red mud
    • C01F7/0653—Separation of the insoluble residue, e.g. of red mud characterised by the flocculant added to the slurry
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F216/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
    • C08F216/12—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an ether radical
    • C08F216/14—Monomers containing only one unsaturated aliphatic radical
    • C08F216/16—Monomers containing no hetero atoms other than the ether oxygen
    • C08F216/18—Acyclic compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/04—Acids; Metal salts or ammonium salts thereof
    • C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/52—Amides or imides
    • C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
    • C08F220/56—Acrylamide; Methacrylamide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
    • C08F222/04—Anhydrides, e.g. cyclic anhydrides
    • C08F222/06—Maleic anhydride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/80—Siloxanes having aromatic substituents, e.g. phenyl side groups
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/545—Silicon compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/02—Polyamines
    • C08G73/0206—Polyalkylene(poly)amines

Definitions

  • Bauxite is the basic raw material for almost all manufactured alumina compounds. In the course of production of aluminum compounds, most bauxite is refined to aluminum hydroxide by the Bayer process.
  • the Bayer process involves hot leaching of bauxite with NaOH solution in pressure vessels to obtain supersaturated sodium aluminate solutions from which Al(OH) 3 is precipitated by seeding.
  • Bayer process refineries share six common process stages: bauxite mining; raw material preparation; bauxite digestion; separation, washing, disposal of insoluble bauxite residue; aluminum hydroxide (trihydrate) precipitation; and calcinations to anhydrous alumina.
  • the process of separating bauxite residue solids from the supersaturated green liquor near its boiling point is known as “clarification”.
  • the coarser solid particles are generally removed with a “sand trap” cyclone.
  • the slurry is normally fed to the center well of a mud settler where it is treated with a flocculant composition that may be based on a variety of flocculating agents including starch, flour, polyacrylate salt polymer, acrylate salt/acrylamide copolymer, and/or water-soluble polymers containing pendant hydroxamic acid or salt groups.
  • clarified sodium aluminate solution referred to as green liquor, overflows a weir at the top of the mud settling tank and is passed to the subsequent process steps.
  • the sodium aluminate solution is generally cooled to enhance supersaturation and then seeded, e.g. with fine gibbsite seed from previous cycles to initiate precipitation of the desired end product Al(OH) 3 .
  • the present invention provides silicon-containing polymers, flocculant compositions and processes for the reduction of suspended solids from a process stream of the Bayer alumina process.
  • the processes involve contacting a Bayer process stream with such a silicon-containing polymer and/or flocculant composition to flocculate suspended solids in Bayer process streams.
  • silicon-containing polymers and flocculant compositions described herein are particularly useful for flocculating suspended DSP in Bayer process streams.
  • silicon-containing polymers include those having pendant silane groups, e.g., silicon-containing pendant groups of the Formula (I) attached thereto:
  • each R is independently hydrogen, C 1-20 alkyl, C 1-20 alkenyl, C 6-12 aryl, C 7-20 arylkyl, a group I metal ion, a group II metal ion, or NR′ 4 + ; where each R′ is independently hydrogen, C 1-20 alkyl, C 1-20 alkenyl, C 6-12 aryl, and C 7-20 arylkyl; and where R and R′ are each independently unsubstituted, hydroxy-substituted, or beta-hydroxy substituted.
  • R can be or include an aryl group.
  • aryl as used herein is a broad term and is used in its ordinary sense, including, without limitation, to refer to an aromatic carbocyclic moiety such as phenyl or naphthyl, as well as arylalkyl and alkylaryl moieties.
  • the polymer backbone comprises substituted ethylene recurring units, e.g., —[CH 2 C(R x )H]—, wherein R x comprises a silane group with or without a linking group as described elsewhere herein, or another pendant substituent.
  • R x comprises a silane group with or without a linking group as described elsewhere herein, or another pendant substituent.
  • a single kind of linking group can be employed, or combinations of linking groups can be employed.
  • additional hydrogen atoms of the ethylene recurring unit can be substituted by a pendant silane group or some other pendant group.
  • the monomers or resulting recurring units can be hydrolyzed by aqueous base, either before or after polymerization.
  • Suitable comonomers include, but are not limited to, vinyl acetate, acrylonitrile, styrene, acrylic acid and it esters, acrylamide and substituted acrylamides such as acrylamidomethylpropanesulfonic acid.
  • the copolymers can also be graft copolymers, such as polyacrylic acid-g-poly(vinyltriethoxysilane) or poly(vinylacetate-co-crotonic acid)-g-poly(vinyltriethoxysilane).
  • the silicon-containing polymer comprises recurring units, the recurring units comprising a first recurring unit having a structure —[CH 2 C(R 1 )H]—, a second recurring unit having a structure —[CH 2 C(R 2 )H]—, a third recurring unit having a structure —[CH 2 C(R 3 )H]—, a fourth recurring unit having a structure —[CH 2 C(R 4 )H]—, and a fifth recurring unit having a structure —[CH 2 C(R 5 )H]—, wherein R 1 is C( ⁇ O)NH 2 , wherein R 2 is —C( ⁇ O)O ⁇ , wherein R 3 is —C( ⁇ O)NHO ⁇ , wherein R 4 is —NHC( ⁇ O)NHCH 2 CH 2 CH 2 Si(O ⁇ ) 3 , and wherein R 5 is —NH 2 .
  • Flocculant compositions including those containing a silicon-containing polymer flocculant as described herein (e.g., a silicon-containing polymer flocculant for a DSP) and/or a polymer flocculant for a Bayer process red mud, may be concentrated or diluted (e.g., in water), and may include additional ingredients. It will be appreciated by those skilled in the art that Bayer process sites are often located far from flocculant manufactureres, and thus it is often desirable to transport the flocculant composition to the Bayer process site in a relatively concentrated form in order to minimize shipping costs.
  • a silicon-containing polymer flocculant as described herein e.g., a silicon-containing polymer flocculant for a DSP
  • a polymer flocculant for a Bayer process red mud may be concentrated or diluted (e.g., in water), and may include additional ingredients. It will be appreciated by those skilled in the art that Bayer process sites are often located far from flocculant
  • the concentrated flocculant composition can then be conveniently diluted in an aqueous medium on site to form a dilute flocculant composition, at or about the time that it is to be used.
  • the aqueous medium with which the concentrated flocculant composition is diluted may be water in a relatively pure form, recycled water from various sources, or an aqueous Bayer process stream.
  • the DSP may comprise, for example, a sodium aluminosilicate.
  • at least a portion of the DSP is suspended in the flocculant composition.
  • concentration of any particular polymer flocculant in a flocculant composition may vary over a broad range, e.g., from about 0.1 part per million to about 100% (e.g., highly concentrated form containing little or no water).
  • examples of suitable concentrations of the anionic polymer flocculant in the flocculant composition include amounts in the range of from about 0.1 part per million to about 1,000 parts per million, and examples of suitable concentrations of the silicon-containing polymeric flocculant in the flocculant composition include amounts in the range of from about one part per million to about 500 parts per million.
  • the Bayer process stream comprises suspended DSP, e.g., from about 0.02 grams per liter to about 200 grams per liter of suspended DSP.
  • suspended DSP e.g., from about 0.02 grams per liter to about 200 grams per liter of suspended DSP.
  • the polymer flocculants and flocculant compositions described herein are particularly useful for flocculating suspended DSP in Bayer process streams.
  • a synthetic Bayer liquor is made by adding 256 g sodium aluminate, 66 g sodium hydroxide, and 40 g sodium carbonate to water to make a total of 1000 ml and heating to 100° C.
  • a DSP is made by heating kaolin in sodium hydroxide solution to 150° C., followed by filtration, washing, and drying to recover dry DSP.
  • Red mud solids are obtained from mud slurry typically being discharged to waste at an operating Bayer plant. This mud is washed free of the associated dilute sodium aluminate solution, dried and ground.
  • a slurry of 9 g Pearl starch (National Starch and Chemical Co., Bridgewater, N.J., USA) is mixed with 2 g glycidoxypropyltrimethoxysilane and stirred at room temperature for 16 hours.
  • the reaction product is partially dried at 50° C., then heated to 95° C. in 20 g/l aqueous NaOH to make a 3% solution.
  • the product is Reagent C.
  • Reagent C exhibits significantly increased settling rates for suspended DSP or red mud, compared to unfunctionalized pearl starch, indicating that Reagent C is an effective flocculating agent in its own right.
  • Reagent C is even more effective in flocculating suspended DSP/red mud mixtures (10/70, 20/80, and a 40/60). Good clarity is also observed for red mud and DSP/red mud mixtures treated with Reagent C.
  • Reagent C significantly increases the settling rate of red mud and substantially improves clarity when employed in combination with Superfloc HX-400.
  • a reagent is made by a process similar to that of Example 5a, except 0.005 moles (0.60 g) styreneoxide is used instead of the epoxybutane.
  • the product is Reagent G.
  • Scripset 520 a styrene-maleic anhydride copolymer made by Hercules Inc., Wilmington, Del., USA
  • Scripset 520 a styrene-maleic anhydride copolymer made by Hercules Inc., Wilmington, Del., USA
  • toluene a styrene-maleic anhydride copolymer made by Hercules Inc., Wilmington, Del., USA
  • 2.19 g of aminopropyl-triethoxysilane in 10 g of toluene is added.
  • the mixture is refluxed for 2 hours and then cooled to ambient temperature.
  • the solid polymer is filtered off, washed with hexane, and dried at 60° C. to yield Reagent N.
  • aqueous solution of the product is prepared by breaking the white emulsion into a 2% sodium hydroxide solution containing nonylphenol ethoxylate nonionic surfactant (SURFONIC N-95 from Huntsman Petrochemical Corporation of Houston, Tex., USA), yielding Reagent S.
  • SURFONIC N-95 nonylphenol ethoxylate nonionic surfactant
  • a polymer backbone emulsion of poly(acrylamide-co-acrylic acid) is prepared in a similar process as described in Example 15, except that N-vinylformamide is not included in the aqueous phase.
  • the emulsion product contains 32% real polymer.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Treatment Of Sludge (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Silicon Compounds (AREA)
US12/052,415 2007-04-20 2008-03-20 Use of silicon-containing polymers to improve red mud flocculation in the bayer process Abandoned US20080257827A1 (en)

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Application Number Priority Date Filing Date Title
US12/052,415 US20080257827A1 (en) 2007-04-20 2008-03-20 Use of silicon-containing polymers to improve red mud flocculation in the bayer process
US13/363,712 US8906239B2 (en) 2007-04-20 2012-02-01 Use of silicon-containing polymers to improve red mud flocculation in the bayer process
US14/929,914 US20160052807A1 (en) 2007-04-20 2015-11-02 Use of silicon-containing polymers to improve red mud flocculation in the bayer process

Applications Claiming Priority (2)

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US91298107P 2007-04-20 2007-04-20
US12/052,415 US20080257827A1 (en) 2007-04-20 2008-03-20 Use of silicon-containing polymers to improve red mud flocculation in the bayer process

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US14/929,914 Division US20160052807A1 (en) 2007-04-20 2015-11-02 Use of silicon-containing polymers to improve red mud flocculation in the bayer process

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US13/363,712 Expired - Fee Related US8906239B2 (en) 2007-04-20 2012-02-01 Use of silicon-containing polymers to improve red mud flocculation in the bayer process
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US (3) US20080257827A1 (fr)
EP (2) EP3486216A1 (fr)
JP (2) JP5350362B2 (fr)
CN (2) CN102515228B (fr)
AP (1) AP2481A (fr)
AU (1) AU2008242419B2 (fr)
BR (1) BRPI0810024B1 (fr)
CA (4) CA2962679A1 (fr)
ES (1) ES2718610T3 (fr)
RU (1) RU2429207C2 (fr)
SA (1) SA08290216B1 (fr)
TR (1) TR201904663T4 (fr)
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WO2011100183A1 (fr) 2010-02-12 2011-08-18 Cytec Technology Corp. Compositions d'émulsion d'eau dans l'huile et leurs procédés d'élaboration et de mise en œuvre
WO2011100185A1 (fr) 2010-02-12 2011-08-18 Cytec Technology Corp. Compositions de floculant contenant des polymères à teneur en silicium
US8298508B2 (en) * 2010-08-09 2012-10-30 Nalco Company Recovery of alumina trihydrate during the bayer process using cross-linked polysaccharides
US9102995B2 (en) 2010-08-09 2015-08-11 Nalco Company Cross-linked ethylsulfonated dihydroxypropyl cellulose
US20150284278A1 (en) * 2012-11-07 2015-10-08 Rio Tinto Alcan International Limited Treatment of alkaline bauxite residue
US9199855B2 (en) 2010-08-09 2015-12-01 Nalco Company Chemical treatment to improve red mud separation and washing in the bayer process
WO2017213626A1 (fr) 2016-06-07 2017-12-14 Cytec Industries Inc. Les polymères floculants contenant du silicium
US10301414B2 (en) * 2014-12-08 2019-05-28 Cytec Industries Inc. Silicon containing polymer flocculants
US10315944B2 (en) * 2014-04-30 2019-06-11 Dow Global Technologies Llc Polymeric flocculants for treating aqueous mineral suspensions
US10427950B2 (en) 2015-12-04 2019-10-01 Ecolab Usa Inc. Recovery of mining processing product using boronic acid-containing polymers
US11046794B2 (en) 2014-12-17 2021-06-29 Cytec Industries Inc. Scale inhibitor compositions and methods of using
CN117699934A (zh) * 2024-02-06 2024-03-15 克拉玛依市弘智油田技术服务有限公司 一种净水剂及其制备方法

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JP5350362B2 (ja) * 2007-04-20 2013-11-27 サイテク・テクノロジー・コーポレーシヨン バイエル工程における赤泥凝集を向上させるためのケイ素含有重合体の使用
ES2550162T3 (es) * 2008-10-17 2015-11-04 Cytec Technology Corporation Uso de polímeros que contienen silicio para la floculación mejorada de sólidos en procesos para la producción de alúmina a partir de bauxita
PL3199218T3 (pl) 2009-09-15 2020-04-30 Suncor Energy Inc. Proces osuszania dojrzałych drobnych odpadów z flotacji piasków bitumicznych
CA2936031C (fr) 2009-09-15 2019-09-03 Adrian Peter Revington Techniques de floculation et de deshydratation de residus fins
US9068776B2 (en) 2009-10-30 2015-06-30 Suncor Energy Inc. Depositing and farming methods for drying oil sand mature fine tailings
CA2885192C (fr) * 2012-10-29 2019-06-04 Nalco Company Procedes pour ameliorer la filtration pour le procede bayer
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