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US3969104A Expired / Lapsed US ⏱️ 0.0 years remaining

Granules of magnesium and its alloys

Assignee: Individual
•
Filing: 1975-02-18
•
Granted: 1976-07-13
•
Expires: 1995-02-18
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Abstract

Abstract The invention relates to magnesium-containing mixtures, in the form of granules of a particular shape, made by the introduction of a salt to liquid metal at a temperature of 670 DEG -720 DEG C, heated to a temperature of 670 DEG -730 DEG C, composed of metal chlorides and fluorides not reducible by magnesium, taken separately or in combination, and having an initial crystallization temperature below that of the granulated metal, and a density at the temperature of 670 DEG -730 DEG C equal to 0.95-1.2 of the density of the metal. The molten mixture is atomized by centrifugal force with subsequent cooling of the thus produced discrete particles by air flow. The mixture obtained in producing granules of magnesium or its alloys comprises in weight per cent: 65-97 of granulated magnesium, 0.3-16 of magnesium and alkali metal chlorides, 0.1-10 of one of the fluorides, up to 3 of alkaline-earth metal chlorides, and up to 6 of magnesium oxide. The above mixture can also comprise in weight per cent: 60-97 of granulated magnesium alloy, 0.3-16 of magnesium and alkali metal chlorides, 0.1-10 of one of the fluorides, 0.3-10 of alkaline-earth metal chlorides, and not over 5.0 of magnesium oxide.

Inventors

  • 👤 Ivan Andreevich Barannik
  • 👤 Gennady Ivanovich Belkin
  • 👤 Viktor Ivanovich Borodin
  • 👤 Natalya Alexandrovna Voronova
  • 👤 Oleg Nikolaevich Romanenko
  • 👤 Alexandr Petrovich Bogdanov
  • 👤 Valery Sergeevich Belosludtsev
  • 👤 Vladimir Dmitrievich Marfin
  • 👤 Nikolai Yakovlevich Shish
  • 👤 Anatoly Filippovich Shevchenko
  • 👤 Ivan Yakovlevich Emelyanov
  • 👤 Jury Nikolaevich Boiko
  • 👤 Mikhail Nikolaevich Kljuchnik
  • 👤 Nikolai Vasilievich Khaber
  • 👤 Viktor Georgievich Raskatov
  • 👤 Alexandr Fedorovich Trukhin
  • 👤 Anatoly Borisovich Kondratenko
  • 👤 Vladimir Dmitrievich Yazev
  • 👤 Viktor Stepanovich Alontsev
  • 👤 Valery Alexeevich Startsev
  • 👤 Jury Alexandrovich Sergeev

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 02:46
CPC Classifications
B; B22; B22F; B22F1/00; B22F1/16

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 51 words
A magnesium-salt powder consisting essentially in weight percent of 65 to 97 granulated magnesium, 0.3 to 16 magnesium and alkali metal chlorides, 0.1 to 10 of a fluoride selected from the group consisting of alkali and alkaline-earth metal fluorides, up to 3 alkaline-earth metal chlorides, and up to 6 magnesium oxide.
Claim 2
Dependent Claim 51 words
A magnesium-salt powder consisting essentially in weight percent of 65 to 97 granulated magnesium, 0.3 to 16 magnesium and alkali metal chlorides, 0.1 to 10 of a fluoride selected from the group consisting of alkali and alkaline-earth metal fluorides, up to 3 alkaline-earth metal chlorides, and up to 6 magnesium oxide.
Claim 3
Dependent Claim 52 words
A magnesium-salt powder consisting essentially in weight percent of 60 to 97 granulated magnesium alloy, 0.3 to 16 magnesium and alkali metal chlorides, 0.1 to 10 of a fluoride selected from the group consisting of alkali and alkaline-earth metal fluorides, 0.3 to 10 alkaline-earth metal chlorides, and up to 5 magnesium oxide.
Claim 4
Dependent Claim 52 words
A magnesium-salt powder consisting essentially in weight percent of 60 to 97 granulated magnesium alloy, 0.3 to 16 magnesium and alkali metal chlorides, 0.1 to 10 of a fluoride selected from the group consisting of alkali and alkaline-earth metal fluorides, 0.3 to 10 alkaline-earth metal chlorides, and up to 5 magnesium oxide.
Claim 5
Dependent Claim 32 words
The mixture as defined in claim 2, wherein the salt addition amounts to 2.5 to 20 weight percent, and wherein over 50 percent of the granulated magnesium has spherical or ellipsoidal granules.
Claim 6
Dependent Claim 38 words
The mixture as defined in claim 2, wherein the salt addition amounts to 0.5 to 2.5 weight percent, and wherein over 50 percent of the granulated magnesium has elongated granules whose lengths are at least twice their thicknesses.
Claim 7
Dependent Claim 68 words
The mixture as defined in claim 2, wherein the salt addition comprises up to 5 weight percent of at least one component selected from the group consisting of magnesium, calcium and barium chlorides, up to 2 weight percent of at least one component selected from the group consisting of sodium and magnesium fluorides, the balance being sodium and potassium chlorides taken in a proportion from 1.1 to 1.5.
Claim 8
Dependent Claim 32 words
The mixture as defined in claim 5, wherein the salt addition amounts to 2.5 to 20 weight percent, and wherein over 50 percent of the granulated magnesium has spherical or ellipsoidal granules.
Claim 9
Dependent Claim 37 words
The mixture as defined in claim 5, wherein the salt addition amounts to 0.5 to 2.5weight percent, and wherein over 50 percent of the granulated magnesium has elongated granules whose lengths are at least twice their thicknesses.

References Cited (Backward Citations)

US2304130A Cited
US2699576A Cited
US3520718A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-07-13 1980-01-12 1980-07-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-07-13 1984-01-12 1984-07-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-07-13 1988-01-12 1988-07-13 $7700.00 Window Closed / Lapsed

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