US4019897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurizing and inoculating agent for molten iron
Assignee: Aikoh Co Ltd
•
Filing: 1975-09-08
•
Granted: 1977-04-26
•
Expires: 1995-09-08
Abstract
Abstract A moulding for the treatment of molten iron characterized in that magnesium particle or powder having a diameter of approximately less than 10 mm is mixed for moulding with 1 - 20% by weight of refractory fibrous material, 0.1 - 10% by weight of organic fibrous material and 0.1 - 10% by weight of binder in the whole amount.
Inventors
- 👤 Hiroshi Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:57
CPC Classifications
C; C21; C21C; C21C1/00; C21C1/10; C21C1/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
57 words
A magnesium base molding for the treatment of molten iron comprising 1 to 20% by weight of refractory fibrous material; 0.1 to 10% by weight of organic fibrous material; in excess of 1.2% by weight magnesium particles, said magnesium particles having a diameter of less than about 10 mm; and 0.1 to 10% by weight of binder.
Claim 2
Dependent Claim
57 words
A magnesium base molding for the treatment of molten iron comprising 1 to 20% by weight of refractory fibrous material; 0.1 to 10% by weight of organic fibrous material; in excess of 1.2% by weight magnesium particles, said magnesium particles having a diameter of less than about 10 mm; and 0.1 to 10% by weight of binder.
Claim 3
Dependent Claim
32 words
The magnesium base molding of claim 1 which further includes from 10 to 50% by weight of a material selected from the group consisting of carbonaceous particles, refractory particles and mixtures thereof.
Claim 4
Dependent Claim
38 words
The magnesium base molding of claim 1 having on its outer surface a shell including 20 to 90% by weight refractory fibrous material, 5 to 20% by weight organic fibrous material, and 5 to 20% by weight binder.
Claim 5
Dependent Claim
34 words
The magnesium based molding of claim 3 wherein said outer shell further includes 20 to 60% by weight of a material selected from the group consisting of carbonaceous particles, refractory particles and mixtures thereof.
References Cited (Backward Citations)
US3459541A
Cited
US3656989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |