FR2395057A1 - Decanter for purifying water contg. particulate materials - incorporates scraper which can be lifted clear of deposited mud, facilitating starting after prolonged stoppage - Google Patents
Decanter for purifying water contg. particulate materials - incorporates scraper which can be lifted clear of deposited mud, facilitating starting after prolonged stoppageInfo
- Publication number
- FR2395057A1 FR2395057A1 FR7719552A FR7719552A FR2395057A1 FR 2395057 A1 FR2395057 A1 FR 2395057A1 FR 7719552 A FR7719552 A FR 7719552A FR 7719552 A FR7719552 A FR 7719552A FR 2395057 A1 FR2395057 A1 FR 2395057A1
- Authority
- FR
- France
- Prior art keywords
- scraper
- decanter
- mud
- incorporates
- particulate materials
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract 3
- 230000002035 prolonged effect Effects 0.000 title abstract 2
- 239000011236 particulate material Substances 0.000 title 1
- 238000010908 decantation Methods 0.000 abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000003245 coal Substances 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 239000008394 flocculating agent Substances 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 230000000750 progressive effect Effects 0.000 abstract 1
- 238000007670 refining Methods 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
- B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
-
- 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
- B01D21/02—Settling tanks with single outlets for the separated liquid
- B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
- B01D21/06—Settling tanks with single outlets for the separated liquid with moving scrapers with rotating scrapers
-
- 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
- B01D21/18—Construction of the scrapers or the driving mechanisms for settling tanks
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Centrifugal Separators (AREA)
Abstract
A decanter, consisting of a decantation tank and a scraper driven axially to circulate decanted mud from the periphery of the tank to the centre where it is discharged, incorporates means of raising or lowering the scraper, pref. independent of its means of rotation, and such that the rate of lifting is considerably greater than that of lowering. Used partic. for the purificn. of water which has been used to wash material extracted from quarries and sand-pits or coal or mineral mines. Process facilitates starting of the scraper after a prolonged stoppage resulting in a thick layer of mud. The scraper can be raised out of the layer, then started up and lowered so that it enters the mud in a very progressive manner until it comes back to its normal operating regime. Decanter may be used when decantation gives rise to the formation of dense muds, e.g. in sugar refining, in the cases when a flocculating agent is made heavy by a flocculant and in the case where a ppte. is formed by crystallisation in a liq. medium other than water.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7719552A FR2395057A1 (en) | 1977-06-22 | 1977-06-22 | Decanter for purifying water contg. particulate materials - incorporates scraper which can be lifted clear of deposited mud, facilitating starting after prolonged stoppage |
IT49940/78A IT1105014B (en) | 1977-06-22 | 1978-06-20 | DECANTER WITH VERTICAL SCRAPER IN PARTICULAR FOR STONE AND SAND QUARRIES |
ES471056A ES471056A1 (en) | 1977-06-22 | 1978-06-22 | Decanter for purifying water contg. particulate materials - incorporates scraper which can be lifted clear of deposited mud, facilitating starting after prolonged stoppage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7719552A FR2395057A1 (en) | 1977-06-22 | 1977-06-22 | Decanter for purifying water contg. particulate materials - incorporates scraper which can be lifted clear of deposited mud, facilitating starting after prolonged stoppage |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2395057A1 true FR2395057A1 (en) | 1979-01-19 |
FR2395057B3 FR2395057B3 (en) | 1980-04-04 |
Family
ID=9192585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7719552A Granted FR2395057A1 (en) | 1977-06-22 | 1977-06-22 | Decanter for purifying water contg. particulate materials - incorporates scraper which can be lifted clear of deposited mud, facilitating starting after prolonged stoppage |
Country Status (3)
Country | Link |
---|---|
ES (1) | ES471056A1 (en) |
FR (1) | FR2395057A1 (en) |
IT (1) | IT1105014B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007093015A1 (en) * | 2006-02-17 | 2007-08-23 | Alan Lewis Fitzmaurice | Clarifier |
-
1977
- 1977-06-22 FR FR7719552A patent/FR2395057A1/en active Granted
-
1978
- 1978-06-20 IT IT49940/78A patent/IT1105014B/en active
- 1978-06-22 ES ES471056A patent/ES471056A1/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007093015A1 (en) * | 2006-02-17 | 2007-08-23 | Alan Lewis Fitzmaurice | Clarifier |
Also Published As
Publication number | Publication date |
---|---|
FR2395057B3 (en) | 1980-04-04 |
ES471056A1 (en) | 1979-09-16 |
IT7849940A0 (en) | 1978-06-20 |
IT1105014B (en) | 1985-10-28 |
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