US4969407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Containerized hazardous waste homogenate
Assignee: LAMCO Ltd Inc A CORP OF
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Filing: 1990-01-11
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Granted: 1990-11-13
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Expires: 2010-01-11
Abstract
Abstract A method is described for environmentally sound usage of combustible hazardous waste in an operating rotary kiln. The method is particularly adapted for disposal of solid hazardous wastes, optionally in the form of a blended waste homoenate, packaged in sealable containers. The containers are used as fuel modules and charged into a rotary kiln cylinder where kiln gas temperatures range from about 950° to about 1200° C. to achieve high destruction and removal efficiencies.
Inventors
- 👤 Michel R. Benoit
- 👤 Eric R. Hansen
- 👤 Theodore J. Reese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:52
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/08; C; C04; C04B; C04B7/00; C04B7/36; C04B7/43; C04B7/44; C04B7/4407; C04B7/4438; F23G5/20; F23G5/44; F23G5/442; F23G5/448; F27; F27B; F27B7/00; F27B7/20; F27B7/32; F27B7/34; F23G2203/00; F23G2203/20; F23G2203/206; F23G2206/00; F23G2206/20; F23G2206/201; F27B7/3205; F27B2007/3247; F27D; F27D99/00; F27D99/0001; F27D99/0033; F27D2099/0051; Y; Y02; Y02E; Y02E20/00; Y02E20/30; Y02P; Y02P40/00; Y02P40/10; Y02P40/125
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
56 words
A method for preparing hazardous waste material comprising solid waste for environmentally sound disposal by thermal degradation, said method comprising the steps of blending the hazardous waste material to form a hazardous waste homogenate, and packaging portions of said homogenate into containers, said containers of waste homogenate being adapted to be charged into a rotary kiln.
Claim 2
Independent Claim
56 words
A method for preparing hazardous waste material comprising solid waste for environmentally sound disposal by thermal degradation, said method comprising the steps of blending the hazardous waste material to form a hazardous waste homogenate, and packaging portions of said homogenate into containers, said containers of waste homogenate being adapted to be charged into a rotary kiln.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein the containers are sealed metal containers.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein the sealed container is of a fiber construction.
Claim 5
Dependent Claim
29 words
The method of claim 1 wherein the portion of hazardous waste homogenate in each sealed container is sized to have an energy value within a predetermined energy value range.
Claim 6
Dependent Claim
24 words
A fuel module for a rotary cement kiln consisting essentially of containerized hazardous waste homogenate prepared in accordance with the method of claim 1.
Claim 7
Dependent Claim
24 words
A fuel module for a rotary cement kiln consisting essentially of containerized hazardous waste homogenate prepared in accordance with the method of claim 4.
Claim 8
Dependent Claim
15 words
The method of claim 1 wherein the hazardous waste homogenate consists essentially of solid waste.
Claim 9
Dependent Claim
15 words
The method of claim 4 wherein the hazardous waste homogenate consists essentially of solid waste.
References Cited (Backward Citations)
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Cited
US3987916A
Cited
US4136624A
Cited
US4315712A
Cited
US4419943A
Cited
US4785745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-11-12 | 1994-05-14 | 1994-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-12 | 1998-05-14 | 1998-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-12 | 2002-05-14 | 2002-11-13 | $7700.00 | Window Closed / Lapsed |