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US3793007A Expired / Lapsed US ⏱️ 0.0 years remaining

Manganese compositions

Assignee: Foote Mineral Co
•
Filing: 1971-07-12
•
Granted: 1974-02-19
•
Expires: 1991-07-12
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Abstract

Abstract A method, articles and compositions are described for the direct addition of manganese metal to molten aluminum, which provide more rapid dissolution of the manganese in the aluminum than has been possible heretofore. The manganese is added to the molten aluminum in powder form (minus 14 mesh) in intimate admixture with a flux capable of forming a molten phase at the temperature of the molten aluminum to which the mixture is added. The flux, which is employed in an amount from about 3 to about 10 percent by weight of the total manganese-flux composition, contains chlorides other than those of manganese, fluorides and mixtures of such chlorides and fluorides; the preferred flux being 40 percent sodium chloride, 40 percent potassium chloride and 20 percent cryolite (Na3AlF6).

Inventors

  • 👤 J Kline
  • 👤 W Yeh
  • 👤 U Preston

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 01:06
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02; C22C1/026

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 24 words
A composition according to claim 1 wherein the flux melts at a temperature in the range from about 660* C. to about 710* C.
Claim 2
Dependent Claim 16 words
A composition according to claim 2 wherein the manganese metal is substantially all minus 30 mesh.
Claim 3
Dependent Claim 21 words
A composition according to claim 3 wherein not more than about 20 percent of the manganese metal is minus 100 mesh.
Claim 4
Dependent Claim 16 words
A composition according to claim 3 wherein the manganese metal is substantially all plus 100 mesh.
Claim 5
Dependent Claim 34 words
A composition according to claim 1 wherein the flux consists essentially of materials selected from the group consisting of metal chlorides other than manganese chlorides, metal fluorides, and mixturEs of said chlorides and fluorides.
Claim 6
Dependent Claim 47 words
A composition according to claim 6 wherein said metal chlorides are selected from the group consisting of the chlorides of sodium, potassium, aluminum, titanium, and zirconium, and said metal fluorides are selected from the group consisting of the fluorides of sodium, potassium, aluminum, titanium, zirconium and manganese.
Claim 7
Dependent Claim 19 words
A composition according to claim 1 wherein said flux is a mixture of sodium chloride, potassium chloride and cryolite.
Claim 8
Dependent Claim 25 words
A composition according to claim 1 wherein said flux contains about 40 percent sodium chloride, about 40 percent potassium chloride and about 20 percent cryolite.

References Cited (Backward Citations)

US2935397A Cited
US3592637A Cited
US3591369A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-02-18 1977-08-20 1978-02-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-02-18 1981-08-20 1982-02-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-02-18 1985-08-20 1986-02-19 $7700.00 Window Closed / Lapsed

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