WO2002026340A3 - Methods of using natural products as dewatering aids for fine particles - Google Patents

Methods of using natural products as dewatering aids for fine particles Download PDF

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Publication number
WO2002026340A3
WO2002026340A3 PCT/US2000/026925 US0026925W WO0226340A3 WO 2002026340 A3 WO2002026340 A3 WO 2002026340A3 US 0026925 W US0026925 W US 0026925W WO 0226340 A3 WO0226340 A3 WO 0226340A3
Authority
WO
WIPO (PCT)
Prior art keywords
fine particles
dewatering
hydrophobic
hydrophobicity
methods
Prior art date
Application number
PCT/US2000/026925
Other languages
French (fr)
Other versions
WO2002026340A2 (en
Inventor
Roe-Hoan Yoon
Original Assignee
Roe-Hoan Yoon
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Roe-Hoan Yoon filed Critical Roe-Hoan Yoon
Priority to EP00967147A priority Critical patent/EP1406711B1/en
Priority to ES00967147T priority patent/ES2335384T3/en
Priority to PCT/US2000/026925 priority patent/WO2002026340A2/en
Priority to DE60043357T priority patent/DE60043357D1/en
Priority to AU7739500A priority patent/AU7739500A/en
Priority to AT00967147T priority patent/ATE448846T1/en
Priority to PT00967147T priority patent/PT1406711E/en
Priority to AU2000277395A priority patent/AU2000277395B2/en
Publication of WO2002026340A2 publication Critical patent/WO2002026340A2/en
Publication of WO2002026340A3 publication Critical patent/WO2002026340A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/005—Drying solid materials or objects by processes not involving the application of heat by dipping them into or mixing them with a chemical liquid, e.g. organic; chemical, e.g. organic, dewatering aids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/18—Sludges, e.g. sewage, waste, industrial processes, cooling towers

Abstract

A new method of improving the process of dewatering fine particulate materials is disclosed. In this method, an aqueous slurry of fine particles is treated with appropriate hydrophobizing reagents so that the particulate material becomes moderately hydrophobic. A lipid of vegetable or animal origin is then added to the slurry in solutions of light hydrocarbon oils and short-chain alcohols, so that the hydrophobic lipid molecules adsorb on the moderately hydrophobic surface and, thereby, greatly enhance its hydrophobicity. By virtue of the enhanced hydrophobicity, the water molecules adhering to the surface are destabilized and more readily removed during the process of mechanical dewatering. The moisture reduction can be further improved using appropriate electrolytes in conjunction with the lipids, spraying surface tension lowering reagents onto the filter cake, subjecting the cake to a suitable vibratory means, and using combinations thereof.
PCT/US2000/026925 2000-09-28 2000-09-28 Methods of using natural products as dewatering aids for fine particles WO2002026340A2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP00967147A EP1406711B1 (en) 2000-09-28 2000-09-28 Methods of using natural products as dewatering aids for fine particles
ES00967147T ES2335384T3 (en) 2000-09-28 2000-09-28 PROCEDURE FOR THE USE OF NATURAL PRODUCTS AS DEHYDRATION ASSISTANTS FOR FINE PARTICLES.
PCT/US2000/026925 WO2002026340A2 (en) 2000-09-28 2000-09-28 Methods of using natural products as dewatering aids for fine particles
DE60043357T DE60043357D1 (en) 2000-09-28 2000-09-28 PROCESS FOR THE USE OF NATURAL PRODUCTS AS DEHYDRATION AID FOR FINE PARTICLES
AU7739500A AU7739500A (en) 2000-09-28 2000-09-28 Methods of using natural products as dewatering aids for fine particles
AT00967147T ATE448846T1 (en) 2000-09-28 2000-09-28 METHOD FOR USING NATURAL PRODUCTS AS DEWATERING AIDS FOR FINE PARTICLES
PT00967147T PT1406711E (en) 2000-09-28 2000-09-28 Methods of using natural products as dewatering aids for fine particles
AU2000277395A AU2000277395B2 (en) 2000-09-28 2000-09-28 Methods of using natural products as dewatering aids for fine particles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2000/026925 WO2002026340A2 (en) 2000-09-28 2000-09-28 Methods of using natural products as dewatering aids for fine particles

Publications (2)

Publication Number Publication Date
WO2002026340A2 WO2002026340A2 (en) 2002-04-04
WO2002026340A3 true WO2002026340A3 (en) 2004-01-15

Family

ID=21741825

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/026925 WO2002026340A2 (en) 2000-09-28 2000-09-28 Methods of using natural products as dewatering aids for fine particles

Country Status (7)

Country Link
EP (1) EP1406711B1 (en)
AT (1) ATE448846T1 (en)
AU (2) AU2000277395B2 (en)
DE (1) DE60043357D1 (en)
ES (1) ES2335384T3 (en)
PT (1) PT1406711E (en)
WO (1) WO2002026340A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2376400B1 (en) * 2008-12-19 2016-02-24 DENNERT PORAVER GmbH Open pore mold and method for producing the same
US9896366B2 (en) * 2014-02-26 2018-02-20 Ecolab Usa Inc. Alternative additives to enhance slurry dewatering
CN111646663B (en) * 2020-06-30 2021-08-24 广东源控环保科技有限公司 Process for breaking sludge through hydrodynamic cavitation

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207186A (en) * 1978-12-05 1980-06-10 American Cyanamid Company Process for dewatering mineral concentrates
US4210531A (en) * 1977-12-15 1980-07-01 American Cyanamid Company Process for dewatering mineral concentrates
US4278208A (en) * 1977-01-19 1981-07-14 English Clays Lovering Pochin & Co., Ltd. Comminution of materials
US4561953A (en) * 1983-06-16 1985-12-31 Battelle Memorial Institute Solid-liquid separation process for fine particle suspensions by an electric and ultrasonic field
US5346630A (en) * 1990-05-08 1994-09-13 Unilever Patent Holdings B.V. Coal dewatering
US5670056A (en) * 1995-04-17 1997-09-23 Virginia Tech Intellectual Properties, Inc. Chemical-mechanical dewatering process
US5814210A (en) * 1988-01-27 1998-09-29 Virginia Tech Intellectual Properties, Inc. Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2864765A (en) 1953-09-01 1958-12-16 Internat Nickel Co Inc Dewatering ore concentrates
JPS5243477B2 (en) 1974-03-20 1977-10-31
US4191655A (en) 1977-07-07 1980-03-04 Betz Laboratories, Inc. Dewatering composition
US4206063A (en) 1978-12-05 1980-06-03 American Cyanamid Company Dewatering aid composition
US4410431A (en) 1982-04-01 1983-10-18 Nalco Chemical Company Composition for altering the water function characteristics of mineral slurries
US4447344A (en) 1983-06-02 1984-05-08 Nalco Chemical Company Dewatering aids for coal and other mineral particulates
US4770766A (en) 1986-03-12 1988-09-13 Otisca Industries, Ltd. Time-controlled processes for agglomerating coal
DE68910823T2 (en) 1988-06-30 1994-03-17 Ind Minerals Res & Dev Drainage of aluminum trihydrate and drainage agent.
US5048199A (en) 1989-01-06 1991-09-17 Wen-Don Corporation Dewatering composition
US4969928A (en) 1989-03-03 1990-11-13 The United States Of America As Represented By The United States Department Of Energy Combined method for simultaneously dewatering and reconstituting finely divided carbonaceous material
DE3918274A1 (en) 1989-06-05 1990-12-06 Henkel Kgaa USE OF HYDROXYMISCHETHERS AS A SOLVENT FOR SOLIDS HEATING
US5405554A (en) 1990-02-08 1995-04-11 Cytec Technology Corp. High performance dewatering aids
US5167831A (en) 1991-06-20 1992-12-01 Nalco Chemical Company Non-ionic surfactants plus fatty-acids as dewatering aids for alumina trihydrate
US5256169A (en) 1991-07-12 1993-10-26 Betz Laboratories, Inc. Methods and compositions for dewatering and suppressing dust during processing of fine coal
US5379902A (en) 1993-11-09 1995-01-10 The United States Of America As Represented By The United States Department Of Energy Method for simultaneous use of a single additive for coal flotation, dewatering, and reconstitution

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278208A (en) * 1977-01-19 1981-07-14 English Clays Lovering Pochin & Co., Ltd. Comminution of materials
US4210531A (en) * 1977-12-15 1980-07-01 American Cyanamid Company Process for dewatering mineral concentrates
US4207186A (en) * 1978-12-05 1980-06-10 American Cyanamid Company Process for dewatering mineral concentrates
US4561953A (en) * 1983-06-16 1985-12-31 Battelle Memorial Institute Solid-liquid separation process for fine particle suspensions by an electric and ultrasonic field
US5814210A (en) * 1988-01-27 1998-09-29 Virginia Tech Intellectual Properties, Inc. Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles
US5346630A (en) * 1990-05-08 1994-09-13 Unilever Patent Holdings B.V. Coal dewatering
US5670056A (en) * 1995-04-17 1997-09-23 Virginia Tech Intellectual Properties, Inc. Chemical-mechanical dewatering process

Also Published As

Publication number Publication date
EP1406711A4 (en) 2005-10-05
AU2000277395B2 (en) 2005-11-10
ES2335384T3 (en) 2010-03-26
EP1406711A2 (en) 2004-04-14
PT1406711E (en) 2010-01-27
WO2002026340A2 (en) 2002-04-04
ATE448846T1 (en) 2009-12-15
AU7739500A (en) 2002-04-08
EP1406711B1 (en) 2009-11-18
DE60043357D1 (en) 2009-12-31

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