US4171215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloying addition for alloying manganese to aluminum
Assignee: Foote Mineral Co
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Filing: 1978-07-03
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Granted: 1979-10-16
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Expires: 1998-07-03
Abstract
Abstract Manganese is alloyed into aluminum using a solid compact prepared by blending finely divided particles comprising beta manganese with aluminum particles and then compacting the mixture into a readily useable form such as a briquette. The resultant briquette provides rapid dissolution of the beta manganese in the aluminum and improved manganese recoveries. The beta manganese may be prepared by heating manganese to 1305°-1990° F. followed by water quenching and crushing to obtain a product of controlled particle size having a reduced percentage of fines.
Inventors
- 👤 Charles E. Dremann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:11
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02; C22C1/026; C22C1/03
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
87 words
An alloying addition for alloying manganese with aluminum which comprises a mixture of finely divided particles of aluminum and beta manganese, said beta manganese being present as manganese metal or in the form of a manganese-aluminum alloy comprising from about 75 to about 98 percent, by weight, manganese, said alloying addition comprising from about 50 to about 90 percent, by weight, of beta manganese and from about 10 to about 50 percent aluminum, at least about 10 percent by weight of the total composition comprising aluminum powder.
Claim 2
Dependent Claim
87 words
An alloying addition for alloying manganese with aluminum which comprises a mixture of finely divided particles of aluminum and beta manganese, said beta manganese being present as manganese metal or in the form of a manganese-aluminum alloy comprising from about 75 to about 98 percent, by weight, manganese, said alloying addition comprising from about 50 to about 90 percent, by weight, of beta manganese and from about 10 to about 50 percent aluminum, at least about 10 percent by weight of the total composition comprising aluminum powder.
Claim 3
Dependent Claim
26 words
An alloying addition according to claim 1 in the form of a solid compact comprised of a mixture of finely divided beta manganese and aluminum particles.
Claim 4
Dependent Claim
26 words
An alloying addition according to claim 2 comprising from about 70 to about 80 percent beta manganese and from about 20 to about 30 percent aluminum.
Claim 5
Dependent Claim
18 words
An alloying addition according to claim 3 comprising about 75 percent beta manganese and about 25 percent aluminum.
Claim 6
Dependent Claim
17 words
An alloying additive according to claim 1 in which said beta manganese is present as manganese metal.
Claim 7
Dependent Claim
25 words
An alloying additive according to claim 1 in which said beta manganese is present in the form of an alloy of beta manganese and aluminum.
Claim 8
Dependent Claim
15 words
An alloying addition according to claim 6 comprising at least about 25 percent aluminum powder.
Claim 9
Independent Claim
45 words
A method for preparing manganese powder having a controlled particle size and a reduced fines content which comprises heating manganese to a temperature in the range of from about 1305° to about 1990° F., quenching the hot metal in water, and crushing the cooled metal.
Claim 10
Independent Claim
45 words
A method for preparing manganese powder having a controlled particle size and a reduced fines content which comprises heating manganese to a temperature in the range of from about 1305° to about 1990° F., quenching the hot metal in water, and crushing the cooled metal.
Claim 11
Dependent Claim
23 words
The method according to claim 8 in which the manganese is heated to a temperature of from about 1400° to about 1600° F.
Claim 12
Dependent Claim
16 words
The method according to claim 9 in which said cooled metal is subjected to roll crushing.
References Cited (Backward Citations)
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US3941588A
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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) | 1982-10-15 | 1983-04-16 | 1983-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-15 | 1987-04-16 | 1987-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-15 | 1991-04-16 | 1991-10-16 | $7700.00 | Window Closed / Lapsed |