US4208226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy producing waste material composition
Assignee: Individual
•
Filing: 1978-05-01
•
Granted: 1980-06-17
•
Expires: 1998-05-01
Abstract
Abstract Waste materials from the conversion of iron ore to pig iron or steel combine with a reducing metal, such as aluminum or magnesium, and a small portion of a mineral acid to form a reaction mixture which gives a heat output superior to many conventional fuels. The materials are processed in several steps to produce either a shaped or loose composition, a portion of which is then heated to a reaction temperature. Retardants for the reaction may be added.
Inventors
- 👤 Paul A. Deardorff
- 👤 Robert C. Wood
- 👤 Sante M. Cundari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:16
CPC Classifications
C; C06; C06B; C06B43/00; C06B47/00; C06B47/14; C10; C10L; C10L5/00; C10L5/40; Y; Y02; Y02E; Y02E50/00; Y02E50/30
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
59 words
A composition for the production of heat comprising the reaction product of mixing about 50% to 95% by weight of an iron-containing by-product from the production of steel; a mineral acid; about 10% to about 25% by weight pulverulent reducing metal selected from the group consisting of aluminum, magnesium, and manganese; and water, said iron-containing by-product including iron oxide.
Claim 2
Dependent Claim
59 words
A composition for the production of heat comprising the reaction product of mixing about 50% to 95% by weight of an iron-containing by-product from the production of steel; a mineral acid; about 10% to about 25% by weight pulverulent reducing metal selected from the group consisting of aluminum, magnesium, and manganese; and water, said iron-containing by-product including iron oxide.
Claim 3
Dependent Claim
12 words
A composition as defined in claim 1 and additionally comprising a retardant.
Claim 4
Dependent Claim
20 words
A composition as defined in claim 1 and additionally comprising a plurality of iron-containing by-products from the production of steel.
Claim 5
Dependent Claim
14 words
A composition as defined in claim 1 wherein the iron-containing by-product is flue dust.
Claim 6
Dependent Claim
14 words
A composition as defined in claim 1 wherein the iron-containing by-product is mill scale.
Claim 7
Dependent Claim
14 words
A composition as defined in claim 1 wherein the iron-containing by-product is B.O.P. dust.
Claim 8
Dependent Claim
14 words
A composition as defined in claim 1 wherein the iron-containing by-product is filter cake.
Claim 9
Dependent Claim
15 words
A composition as defined in claim 1 wherein the iron-containing by-product is a sinter blend.
Claim 10
Dependent Claim
13 words
A composition as defined in claim 1 wherein the mineral acid is hydrochloric.
Claim 11
Dependent Claim
47 words
A composition as defined in claim 1 wherein the reducing metal is aluminum in the amount of about 15% to about 25% by weight and wherein the aluminum is in powdered form such that the largest dimension of any aluminum particles does not exceed about 1/8 inch.
Claim 12
Dependent Claim
20 words
A composition as defined in claim 1 wherein the pulverulent reducing metal is in the form of an impure waste.
Claim 13
Dependent Claim
15 words
A composition according to claim 1 wherein the pulverulent reducing metal is aluminum dross waste.
References Cited (Backward Citations)
US1430667A
Cited
US1751550A
Cited
US2276671A
Cited
GB579741A
Cited
US3160537A
Cited
US3347721A
Cited
DE1467737A1
Cited
US3745077A
Cited
US4055881A
Cited
US4114591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-06-17 | 1983-12-17 | 1984-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-17 | 1987-12-17 | 1988-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-17 | 1991-12-17 | 1992-06-17 | $7700.00 | Window Closed / Lapsed |