US4501446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of fine-grained sediments from water bodies
Assignee: Ed Zueblin AG
•
Filing: 1982-09-24
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Granted: 1985-02-26
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Expires: 2002-09-24
Abstract
Abstract A method for removing fine-grained sediments from flowing or standing bodies of water. The sediment is dredged from the bottom of the body of water. The dredged sediment is dewatered and classified in a sieve plant. At least a fine-grained admixture material such as fly ash or refined clay is admixed to the dewatered sediment material. The admixture is granulated and the resulting granulate is dried and fired under swelling. The swelled, fired granulate is cooled and further processed. The light weight granulate is admixed to concrete or used in the production of building materials such as sinter blocks and bricks. The noxious materials and heavy metals contained in the sediment are substantially sealed into the granules produced by sintering. The resulting waste waters can be cleared such that they are suitable for feeding back into the bodies of water. The residues of the waste water treatment can also be employed as admixture component in the granulate production.
Inventors
- 👤 Eberhard Glaser
- 👤 Eberhard Beitinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:40
CPC Classifications
E; E02; E02F; E02F1/00; B; B01; B01D; B01D36/00; B01D37/00; C; C02; C02F; C02F11/00; C02F11/12; C02F11/121; C02F11/123; C04; C04B; C04B18/00; C04B18/02; C04B18/027; C04B18/04; C04B18/0436; C04B20/00; C04B20/02; C04B20/04; C04B20/06; C04B20/068; E02B; E02B3/00; E02B3/02; E02B3/023; E02F5/00; E02F5/28; E02F7/00; E02F7/06; E02F7/065; Y; Y02; Y02A; Y02A10/00; Y02W; Y02W10/00; Y02W10/40; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S210/00; Y10S210/901
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
67 words
A method for removing fine-grained sediments from flowing or standing bodies of water comprising dredging the segment from the bottom of the body of water; classifying and dewatering the dredged sediment including the fine-grained material; admixing to the dewatered sediment including the fine-grained material at least a fine-grained admixture material; granulting the mixture; drying the granulate; firing the granulate under swelling; and cooling the swelled, fired granulate.
Claim 2
Independent Claim
67 words
A method for removing fine-grained sediments from flowing or standing bodies of water comprising dredging the segment from the bottom of the body of water; classifying and dewatering the dredged sediment including the fine-grained material; admixing to the dewatered sediment including the fine-grained material at least a fine-grained admixture material; granulting the mixture; drying the granulate; firing the granulate under swelling; and cooling the swelled, fired granulate.
Claim 3
Dependent Claim
16 words
The method for removing fine-grained sediments according to claim 1 wherein the sediments contain noxious materials.
Claim 4
Dependent Claim
16 words
The method for removing fine-grained sediments according to claim 1 wherein the sediments contain organic components.
Claim 5
Dependent Claim
16 words
The method for removing fine-grained sediments according to claim 1 further comprising processing the cooled granulate.
Claim 6
Dependent Claim
27 words
The method for removing fine-grained sediments according to claim 1 further comprising employing the fired granulate as a light weight admixture in the production of building materials.
Claim 7
Dependent Claim
21 words
The method for removing fine-grained sediments according to claim 1 wherein fly ash is employed as a fine grain mineral admixture.
Claim 8
Dependent Claim
36 words
The method for removing fine-grained sediments according to claim 1 wherein the dewatered sediment is admixed with at least one admixture material at a ratio of 70 to 30 percent as referred to the dry weight.
Claim 9
Dependent Claim
20 words
The method for removing fine-grained sediments according to claim 1 wherein refined clay is added as the fine-grained admixture material.
Claim 10
Dependent Claim
21 words
The method for removing fine-grained sediments according to claim 1 further comprising mixing an admixture material from clay and fly ash.
Claim 11
Dependent Claim
27 words
The method for removing fine-grained sediments according to claim 1 further comprising adding to the mixture an additive at an amount of up to 5 weight percent.
Claim 12
Dependent Claim
16 words
The method for removing fine-grained sediments according to claim 10 wherein the additive comprises red mud.
Claim 13
Dependent Claim
15 words
The method for removing fine-grained sediments according to claim 10 wherein the additive comprises oil.
Claim 14
Dependent Claim
16 words
The method for removing fine-grained sediments according to claim 10 wherein the additive comprises waste oil.
Claim 15
Dependent Claim
29 words
The method for removing fine-grained sediments according to claim 10 further comprising mixing red mud and oil for producing an additive and adding this mixture to the sediment composition.
Claim 16
Dependent Claim
16 words
The method for removing fine-grained sediments according to claim 1 wherein the granulate is dried uniformly.
Claim 17
Dependent Claim
38 words
The method for removing fine-grained sediments according to claim 1 wherein the drying is performed such that the noxious materials are not carried out and in particular the organic components in the granulate are not allowed to degasify.
Claim 18
Dependent Claim
21 words
The method for removing fine-grained sediments according to claim 1 wherein the granulate is fired and swelled in a rotary kiln.
Claim 19
Dependent Claim
19 words
The method for removing fine-grained sediments according to claim 1 wherein the mixture is mixed in a positive mixer.
Claim 20
Dependent Claim
24 words
The method for removing fine-grained sediments according to claim 1 further comprising separating oversize particles from the sediment and refining them for further use.
Claim 21
Dependent Claim
22 words
The method for removing fine-grained sediments according to claim 19 wherein the oversize particles are employed in the production of building materials.
Claim 22
Dependent Claim
33 words
The method for removing fine-grained sediments according to claim 1 wherein the sediment is dewatered by machine; further comprising feeding the filtrate waste water generated after purification back to the body of water.
Claim 23
Dependent Claim
29 words
The method for removing fine-grained sediments according to claim 1 wherein the washing waters of the oversize grain refining are purified and fed back to the body of water.
Claim 24
Dependent Claim
23 words
The method for removing fine-grained sediments according to claim 1 further comprising employing the exhaust air of a rotary kiln for drying purposes.
Claim 25
Dependent Claim
30 words
The method for removing fine-grained sediments according to claim 1 further comprising generating energy from the thermal energy of the exhaust air of the rotary kiln suitable for cooling purposes.
Claim 26
Dependent Claim
37 words
The method for removing fine-grained sediments according to claim 1 further comprising cleaning the exhaust air of the firing process and of the drying process and adding the resulting particle depositions as an admixture to the mixture.
Claim 27
Dependent Claim
26 words
The method for removing fine-grained sediments according to claim 1 further comprising feeding the sludge generated during the waste water cleaning to a mechanical dewatering stage.
Claim 28
Dependent Claim
18 words
The method for removing fine-grained sediments according to claim 1 wherein the sediment is classified by mechanical sieving.
Claim 29
Dependent Claim
36 words
The method for removing fine-grained sediments according to claim 1 wherein the sediment is sieved and dewatered in a mobile plant and where the admixing, granulating, drying, firing and cooling is performed in a stationary plant.
Claim 30
Dependent Claim
19 words
The method for removing fine-grained sediments according to claim 1 wherein the method is performed in a mobile plant.
Claim 31
Dependent Claim
21 words
The method for removing fine-grained sediments according to claim 1 wherein the sediment is dewatered in a band filter press machine.
References Cited (Backward Citations)
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US2861353A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |