US3889029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladle brick for lining high temperature vessels
Assignee: Freeport Brick Co
•
Filing: 1973-11-09
•
Granted: 1975-06-10
•
Expires: 1993-11-09
Abstract
Abstract A refractory brick for lining a vessel that receives molten metal has a vessel-engaging face and an opposite face for engagement by the molten metal. The brick is formed from two different compositions that are united between said faces, the composition of the portion of the brick with the vessel-engaging face being a blend of refractory bond clay and calcined fireclay and the composition of the rest of the brick being a blend of refractory bond clay and calcined high alumina material.
Inventors
- 👤 Leroy A Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:59
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/26
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
159 words
A FIRED REFRACTORY BRICK FOR LINING A VESSEL FOR MOLTEN METAL, THE BRICK HAVING A VESSEL-ENGAGING FACE AND AN OPPOSITE FACE TWO DIFFERENT COMPOSITIONS INTEGRALLY UNITED BETWEEN FROM TWO DIFFERENT COMPOSITION OF THE PORTION OF THE BRICK WITH SAID FACES, THE COMPOSITION OF THE PORTION OF THE BRICK WITH SAID VESSEL-ENGAGING FACE BEING AT LEST ONE INCH THICK AND ESSENTIALLY A BLEND OF REFRACTORY BOND CLAY AND CALCINED FIRECLAY, AND THE COMPOSITION OF THE PORTION OF THE BRICK WITH SAID METAL-ENGAGING FACE BEING ESSENTIALLY A BLEND OF REFRACTORY BOND CLAY AND CALCINED HIGH ALUMINA MATERIAL, WHEREBY SAID LAST-MENTIONED FACE HAS MORE RESISTANCE TO CORROSION AND EROSION BY MOLTEN METAL THAN SAID FIRST-MENTIONED FACE, SAID BLENDS HAVING SUBSTANTIALLY THE SAME COEFFICIENTS OF THERMAL EXPANSION DURING FIRING OF THE BRICK, AND SAID FIRST-MENTIONED PORTION OF THE FIRED BRICK HAVING THE PROPERTY OF GREATER EXPANSION THAN THE OTHER PORTION OF THE BRICK WHEN THE FIRED BRICK IS HEATED ABOVE 2,400*F IN USE.
Claim 2
Dependent Claim
159 words
A FIRED REFRACTORY BRICK FOR LINING A VESSEL FOR MOLTEN METAL, THE BRICK HAVING A VESSEL-ENGAGING FACE AND AN OPPOSITE FACE TWO DIFFERENT COMPOSITIONS INTEGRALLY UNITED BETWEEN FROM TWO DIFFERENT COMPOSITION OF THE PORTION OF THE BRICK WITH SAID FACES, THE COMPOSITION OF THE PORTION OF THE BRICK WITH SAID VESSEL-ENGAGING FACE BEING AT LEST ONE INCH THICK AND ESSENTIALLY A BLEND OF REFRACTORY BOND CLAY AND CALCINED FIRECLAY, AND THE COMPOSITION OF THE PORTION OF THE BRICK WITH SAID METAL-ENGAGING FACE BEING ESSENTIALLY A BLEND OF REFRACTORY BOND CLAY AND CALCINED HIGH ALUMINA MATERIAL, WHEREBY SAID LAST-MENTIONED FACE HAS MORE RESISTANCE TO CORROSION AND EROSION BY MOLTEN METAL THAN SAID FIRST-MENTIONED FACE, SAID BLENDS HAVING SUBSTANTIALLY THE SAME COEFFICIENTS OF THERMAL EXPANSION DURING FIRING OF THE BRICK, AND SAID FIRST-MENTIONED PORTION OF THE FIRED BRICK HAVING THE PROPERTY OF GREATER EXPANSION THAN THE OTHER PORTION OF THE BRICK WHEN THE FIRED BRICK IS HEATED ABOVE 2,400*F IN USE.
Claim 3
Dependent Claim
75 words
A fired refractory brick according to claim 1, in which said first-mentioned composition amounts to about 30 to 95 percent of said refractory bond clay and about 70 to 5 percent of said calcined fire-clay, and said second-mentioned composition amounts to about 30 to 95 percent of said refractory bond clay and about 70 to 5 percent of said calcined high alumina material, said percentages being based on the raw dry blend of each composition.
Claim 4
Dependent Claim
49 words
A fired refractory brick according to claim 1, in which the ratio of refractory bond clay to calcined fireclay in said first-mentioned composition is approximately 35 to 65, and the ratio of refractory bond clay to calcined high alumina material in said second-mentioned composition is approximately 35 to 65.
Claim 5
Dependent Claim
17 words
A fired refractory brick according to claim 1, in which said calcined high alumina material is bauxite.
Claim 6
Dependent Claim
22 words
A fired refractory brick according to claim 1, in which said second-mentioned composition is at least half as thick as the brick.
Claim 7
Dependent Claim
62 words
A fired refractory brick according to claim 1, in which said second-mentioned composition is at least half as thick as the brick, the ratio of refractory bond clay to calcined fireclay in said first-mentioned composition is approximately 35 to 65, and the ratio of refractory bond clay to calcined high alumina material in said second-mentioned composition is approximately 35 to 65 also.
References Cited (Backward Citations)
US2949704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |