GB1019035A - Improvements relating to the treatment of suspensions of finely-divided solids in liquids - Google Patents
Improvements relating to the treatment of suspensions of finely-divided solids in liquidsInfo
- Publication number
- GB1019035A GB1019035A GB29005/63A GB2900563A GB1019035A GB 1019035 A GB1019035 A GB 1019035A GB 29005/63 A GB29005/63 A GB 29005/63A GB 2900563 A GB2900563 A GB 2900563A GB 1019035 A GB1019035 A GB 1019035A
- Authority
- GB
- United Kingdom
- Prior art keywords
- suspension
- polyelectrolyte
- flocs
- densifier
- electrolyte
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 239000000725 suspension Substances 0.000 title abstract 14
- 239000007788 liquid Substances 0.000 title abstract 7
- 239000007787 solid Substances 0.000 title abstract 7
- 229920000867 polyelectrolyte Polymers 0.000 abstract 8
- 239000003792 electrolyte Substances 0.000 abstract 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 230000003750 conditioning effect Effects 0.000 abstract 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 abstract 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 abstract 2
- 239000000440 bentonite Substances 0.000 abstract 2
- 229910000278 bentonite Inorganic materials 0.000 abstract 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 abstract 2
- 239000003153 chemical reaction reagent Substances 0.000 abstract 2
- 230000001143 conditioned effect Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000001164 aluminium sulphate Substances 0.000 abstract 1
- 235000011128 aluminium sulphate Nutrition 0.000 abstract 1
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 abstract 1
- 239000011609 ammonium molybdate Substances 0.000 abstract 1
- 235000018660 ammonium molybdate Nutrition 0.000 abstract 1
- 229940010552 ammonium molybdate Drugs 0.000 abstract 1
- 229920001448 anionic polyelectrolyte Polymers 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000001110 calcium chloride Substances 0.000 abstract 1
- 229910001628 calcium chloride Inorganic materials 0.000 abstract 1
- 235000011148 calcium chloride Nutrition 0.000 abstract 1
- 125000002091 cationic group Chemical group 0.000 abstract 1
- 239000003245 coal Substances 0.000 abstract 1
- 238000009291 froth flotation Methods 0.000 abstract 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 abstract 1
- 235000019341 magnesium sulphate Nutrition 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 235000011121 sodium hydroxide Nutrition 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
Abstract
A suspension of a finely-divided solid in a liquid is flocculated by addition of an electrolyte and a polyelectrolyte, the liquid containing the flocs is subjected to a settling step, the settled flocs are separated from the liquid in a manner to compact the flocs together, and the compacted flocs are centrifuged. Apparatus for carrying out the process may comprise a vessel with stirrer for receiving suspension and (aqueous) reagents, a conical settling tank for receiving conditioned suspension, a densifier to receive settled solids, and a basket centrifuge to receive solids from the densifier. The densifier may be omitted; the settling tank may be omitted; two stirrer vessels may be used in series, electrolyte being added to the first and polyelectrolyte to the second; where a single stirrer vessel is used, the electrolyte may be added thereto, and the polyelectrolyte added during passage of the suspension from there to the settling tank. The electrolyte may be: calcium chloride, aluminium or magnesium sulphate, sodium hydroxide, or ammonium molybdate. The polyelectrolyte may be a polymer of acrylic acid, acrylamine or acrylamide. A cationic polyelectrolyte may be added to the suspension before or after an anionic polyelectrolyte. Suspensions of either bentonite or shale may be treated. ALSO:A suspension of a finely-divided solid in a liquid is flocculated by addition of an electrolyte and a polyelectrolyte, the liquid containing the flocs is subjected to a settling step, the settled flocs are separated from the liquid in a manner to compact the flocs together, and the compacted flocs are centrifuged. Apparatus for carrying out the process may comprise a conditioning vessel 1, Fig. 1 (not shown), to receive the suspension, and the reagents (in the form of aqueous solutions), and having a stirrer 2, a conical settling tank 3 to receive the conditioned suspension, a spiral rake densifier 5 to receive the settled solids, and a horizontal basket centrifuge 6 to receive the solids from the densifier. The densifier may be omitted, as in Fig. 3 (not shown). Two stirred conditioning vessels may be used in series, electrolyte being added to first and polyelectrolyte to the second; alternatively, the electrolyte may be added to the stirred suspension in a single conditioning vessel and thereafter the polyelectrolyte may be added to the suspension during its passage from there to the settling tank, as in Fig. 3 (not shown). As a further alternative the conical settling tank may be omitted and the settling carried out in the pool formed at the lower (entrance) end of the densifier. Bentonite suspension (in foundrysand reclamation), and shale suspension, or the tailings fraction resulting from the froth flotation of raw fine coal, may be treated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB29005/63A GB1019035A (en) | 1963-07-22 | 1963-07-22 | Improvements relating to the treatment of suspensions of finely-divided solids in liquids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB29005/63A GB1019035A (en) | 1963-07-22 | 1963-07-22 | Improvements relating to the treatment of suspensions of finely-divided solids in liquids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1019035A true GB1019035A (en) | 1966-02-02 |
Family
ID=10284731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29005/63A Expired GB1019035A (en) | 1963-07-22 | 1963-07-22 | Improvements relating to the treatment of suspensions of finely-divided solids in liquids |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1019035A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2255725A (en) * | 1991-05-17 | 1992-11-18 | Hydro Int Ltd | Liquid treatment |
| US5480559A (en) * | 1991-05-17 | 1996-01-02 | Hydro International Plc | Liquid treatment |
| US6193070B1 (en) | 1997-10-16 | 2001-02-27 | Grand Tank (International) Inc. | Apparatus for separating solids drilling fluids |
| EP1501627A1 (en) * | 2002-04-11 | 2005-02-02 | Mobius Technologies, Inc. | Process and apparatus for continuous mixing of slurry with removal of entrained bubbles |
| EP2287283A1 (en) * | 2009-08-18 | 2011-02-23 | The Procter & Gamble Company | Dynamic orifice changer |
| US8343337B2 (en) | 2008-10-29 | 2013-01-01 | E.I. Du Pont De Nemours And Company | Bitumen extraction process |
-
1963
- 1963-07-22 GB GB29005/63A patent/GB1019035A/en not_active Expired
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2255725A (en) * | 1991-05-17 | 1992-11-18 | Hydro Int Ltd | Liquid treatment |
| GB2255725B (en) * | 1991-05-17 | 1995-08-30 | Hydro Int Ltd | Liquid treatment |
| US5480559A (en) * | 1991-05-17 | 1996-01-02 | Hydro International Plc | Liquid treatment |
| US6193070B1 (en) | 1997-10-16 | 2001-02-27 | Grand Tank (International) Inc. | Apparatus for separating solids drilling fluids |
| EP1501627A1 (en) * | 2002-04-11 | 2005-02-02 | Mobius Technologies, Inc. | Process and apparatus for continuous mixing of slurry with removal of entrained bubbles |
| EP1501627A4 (en) * | 2002-04-11 | 2005-09-07 | Mobius Technologies Inc | Process and apparatus for continuous mixing of slurry with removal of entrained bubbles |
| US8343337B2 (en) | 2008-10-29 | 2013-01-01 | E.I. Du Pont De Nemours And Company | Bitumen extraction process |
| US9011972B2 (en) | 2008-10-29 | 2015-04-21 | E I Du Pont De Nemours And Company | Treatment of tailings streams |
| US9481799B2 (en) | 2008-10-29 | 2016-11-01 | The Chemours Company Fc, Llc | Treatment of tailings streams |
| EP2287283A1 (en) * | 2009-08-18 | 2011-02-23 | The Procter & Gamble Company | Dynamic orifice changer |
| US8067353B2 (en) | 2009-08-18 | 2011-11-29 | The Procter & Gamble Company | Method for making a fabric softener utilizing a dynamic orifice changer |
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