Chemistry: physical processes – Physical processes – Crystallization
Patent
1974-06-03
1976-01-20
Scovronek, Joseph
Chemistry: physical processes
Physical processes
Crystallization
23273SP, 23290, 432262, B01D 900, B01J 300, F27B 1410
Patent
active
039334350
ABSTRACT:
Apparatus for the melt synthesis of inorganic compounds from elemental reactants, at least one of which is highly volatile at the temperature of the reaction. An enclosure means defining a reaction chamber and a reservoir-closure means containing the volatile elemental reactant form the reaction vessel which is sealed by a combination mechanical-liquid seal which is of a character to permit diffusion by high-pressure gas through it. Heating means are provided to effect at least three heating regimes: (I) liquefaction of a liquid sealant, (II) formation and maintenance of a molten reaction mass, and (III) heating of the volatile elemental reactant to vaporize it.
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patent: 3552931 (1971-01-01), Doherty et al.
patent: 3627499 (1971-12-01), Le Duc et al.
patent: 3825242 (1974-07-01), Menashi et al.
Castonguay Roger A.
Menashi Wilson P.
Wenckus Joseph F.
Arthur D. Little Inc.
Lepper Bessie A.
Scovronek Joseph
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