ATE448853T1 - METHOD FOR IMPROVED DEWATERING OF FINE PARTICLES - Google Patents
METHOD FOR IMPROVED DEWATERING OF FINE PARTICLESInfo
- Publication number
- ATE448853T1 ATE448853T1 AT00967227T AT00967227T ATE448853T1 AT E448853 T1 ATE448853 T1 AT E448853T1 AT 00967227 T AT00967227 T AT 00967227T AT 00967227 T AT00967227 T AT 00967227T AT E448853 T1 ATE448853 T1 AT E448853T1
- Authority
- AT
- Austria
- Prior art keywords
- hlb
- appropriate
- surfactant
- contact angle
- conjunction
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 5
- 239000010419 fine particle Substances 0.000 title abstract 2
- 239000004094 surface-active agent Substances 0.000 abstract 4
- 239000003153 chemical reaction reagent Substances 0.000 abstract 2
- 230000002209 hydrophobic effect Effects 0.000 abstract 2
- 239000002002 slurry Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- 150000001298 alcohols Chemical class 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 abstract 1
- 239000012065 filter cake Substances 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- 230000005661 hydrophobic surface Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000002736 nonionic surfactant Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 abstract 1
- 239000011236 particulate material Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
Classifications
-
- 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
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/008—Organic compounds containing oxygen
-
- 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
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/006—Hydrocarbons
-
- 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
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/01—Organic compounds containing nitrogen
-
- 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
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/016—Macromolecular compounds
-
- 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- 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
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
- B03D2203/08—Coal ores, fly ash or soot
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Glanulating (AREA)
- Manufacturing Of Micro-Capsules (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
A new method of improving the process of dewatering fine particule 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 with its water contact angle considerably below 90°. A low hydrophile-lipophile balance (HLB) number surfactant is then added to the slurry, so that the surfactant molecules adsorb on the moderately hydrophobic surface primarily by hydrophobic attraction and, thereby, increase its contact angle close to or above 90°. By virtue of the greatly enhanced hydrophobicity, the water molecules adhering to the surface are destabilized and removed more readily by a mechanical dewatering process. Any nonionic surfactant with its HLB number below about 15 may be used for the hydrophobicity enhancement. The surfactants may be used in conjunction with appropriate solvents such as light hydrocarbon oils and short-chain alcohols. The moisture reduction can be further improved by using appropriate electrolytes in conjunction with the low HLB surfactants, spraying surface tension lowering reagents onto the filter cake, subjecting the cake to a suitable vibratory means, and by using combinations thereof.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2000/027082 WO2002026350A1 (en) | 2000-09-28 | 2000-09-28 | Methods of enhancing fine particle dewatering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE448853T1 true ATE448853T1 (en) | 2009-12-15 |
Family
ID=21741833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT00967227T ATE448853T1 (en) | 2000-09-28 | 2000-09-28 | METHOD FOR IMPROVED DEWATERING OF FINE PARTICLES |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1333905B1 (en) |
| AT (1) | ATE448853T1 (en) |
| AU (2) | AU7745700A (en) |
| DE (1) | DE60043356D1 (en) |
| ES (1) | ES2335472T3 (en) |
| PT (1) | PT1333905E (en) |
| WO (1) | WO2002026350A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11130686B2 (en) | 2017-01-10 | 2021-09-28 | Vermeer Manufacturing Company | Systems and methods for dosing slurries to remove suspended solids |
| CN110293005B (en) * | 2019-07-15 | 2022-02-22 | 中国矿业大学 | Liquid-solid composite collecting agent for coal slime flotation and preparation method thereof |
| CN112919515A (en) * | 2021-03-15 | 2021-06-08 | 神华准能资源综合开发有限公司 | Method for preparing alumina hollow microspheres from fly ash |
| CN113667520B (en) * | 2021-07-13 | 2022-09-09 | 浙江大学 | A kind of hydrophilic solid waste treatment and resource utilization method |
| CN116294533B (en) * | 2023-03-15 | 2024-05-17 | 中国矿业大学 | A method for dehydrating gasification fine slag with intelligent decision-making for multi-energy field cascade treatment |
| CN118616221A (en) * | 2024-07-17 | 2024-09-10 | 昆明冶金研究院有限公司 | An oxygen-sulfur separation agent RH-3000 for mixed oxygen-sulfur zinc concentrate and its preparation method and application |
| CN119219304B (en) * | 2024-10-29 | 2025-08-29 | 兖矿能源集团股份有限公司 | A combined filter aid for dehydrating fine-particle coal slime, and its preparation method and application |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1599632A (en) * | 1977-01-19 | 1981-10-07 | English Clays Lovering Pochin | Comminution of solid 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 |
| IN172903B (en) * | 1990-05-08 | 1994-01-01 | Lever Hindustan Ltd | |
| US5670056A (en) | 1995-04-17 | 1997-09-23 | Virginia Tech Intellectual Properties, Inc. | Chemical-mechanical dewatering process |
-
2000
- 2000-09-28 AT AT00967227T patent/ATE448853T1/en not_active IP Right Cessation
- 2000-09-28 WO PCT/US2000/027082 patent/WO2002026350A1/en not_active Ceased
- 2000-09-28 EP EP00967227A patent/EP1333905B1/en not_active Expired - Lifetime
- 2000-09-28 ES ES00967227T patent/ES2335472T3/en not_active Expired - Lifetime
- 2000-09-28 AU AU7745700A patent/AU7745700A/en active Pending
- 2000-09-28 PT PT00967227T patent/PT1333905E/en unknown
- 2000-09-28 DE DE60043356T patent/DE60043356D1/en not_active Expired - Lifetime
- 2000-09-28 AU AU2000277457A patent/AU2000277457B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES2335472T3 (en) | 2010-03-29 |
| EP1333905A4 (en) | 2005-10-05 |
| AU2000277457B2 (en) | 2006-08-31 |
| EP1333905A1 (en) | 2003-08-13 |
| WO2002026350A1 (en) | 2002-04-04 |
| AU7745700A (en) | 2002-04-08 |
| WO2002026350A8 (en) | 2006-10-12 |
| EP1333905B1 (en) | 2009-11-18 |
| PT1333905E (en) | 2010-01-27 |
| DE60043356D1 (en) | 2009-12-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |