US4618376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a suspension of fly ash in water
Assignee: BIURO STUDIOW I PROJEKTOW ENERGETYCZNYCH "ENERGOPROJEKT" UL POLAND
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Filing: 1984-12-19
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Granted: 1986-10-21
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Expires: 2004-12-19
Abstract
Abstract The subject of the invention is a method of continuous production of fly- in water of a suspension a high concentration of ash with the subsequent addition of slag or granular ash and an installation for the application of this method. The production process is divided into subsequent stages and is realized in separate zones of a flow mixer. Ash, slag, water and granular ash are fed in a continuous manner.
Inventors
- 👤 Antoni Saternus
- 👤 Ludwik Miczek
- 👤 Mieczyslaw Bartnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:58
CPC Classifications
C; C04; C04B; C04B18/00; C04B18/04; C04B18/06; C04B18/08; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S106/00; Y10S106/01
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
121 words
A method for the continuous producing of a suspension of fly-ash in water having a concentration of 0.5 to 2.5 parts ash to 1 part water in a flow mixer including a moisturization zone, a homogenization zone, and a fluidization zone, which steps comprise: (a) adding 1 part fly ash to 0.2 parts water by weight to the moisturization zone and slowly mixing to produce an intermediate product comprising a dense plastic non-fluid substance; (b) homogenizing and dethickening the intermediate product by intensive non-turbulent mixing in the homogenization zone; and (c) in the fluidization zone, adding water to obtain said concentration and turbulently mixing said intermediate product at increasing velocity gradients to electrostatically discharge said fly ash and form said suspension.
Claim 2
Independent Claim
121 words
A method for the continuous producing of a suspension of fly-ash in water having a concentration of 0.5 to 2.5 parts ash to 1 part water in a flow mixer including a moisturization zone, a homogenization zone, and a fluidization zone, which steps comprise: (a) adding 1 part fly ash to 0.2 parts water by weight to the moisturization zone and slowly mixing to produce an intermediate product comprising a dense plastic non-fluid substance; (b) homogenizing and dethickening the intermediate product by intensive non-turbulent mixing in the homogenization zone; and (c) in the fluidization zone, adding water to obtain said concentration and turbulently mixing said intermediate product at increasing velocity gradients to electrostatically discharge said fly ash and form said suspension.
Claim 3
Dependent Claim
24 words
The method according to claim 1 wherein slag or granular ash is added to the suspension of fly-ash and water in the fluidization zone.
Claim 4
Dependent Claim
18 words
The method according to claim 2, wherein the water utilized is industrial waste water enriched with free ions.
References Cited (Backward Citations)
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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) | 1989-10-20 | 1990-04-21 | 1990-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-20 | 1994-04-21 | 1994-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-20 | 1998-04-21 | 1998-10-21 | $7700.00 | Window Closed / Lapsed |