Apparatus for the preparation of a compound or an alloy

Details Apparatus for the preparation of a compound or an alloy Apparatus for the preparation of a compound or an alloy

1975-03-17

1977-07-12

Bascomb, Jr., Wilbur L.

Chemistry: physical processes

Physical processes

Crystallization

156609, 156616A, 156617H, 156619, 423111, 423299, B01D 900, B01J 1708

Patent

active

040351548

ABSTRACT:
An apparatus for preparing a semiconductor compound, having one compound with a substantially higher vapor pressure than the other using a closed horizontal tube disposed in a pressure vessel. The two ends of the tube are located in respective heating ovens having their ends facing away from the tube closed. The heating ovens and tube are disposed within a pressure vessel with the heating ovens having an outside diameter which is considerably smaller than the inside diameter of the pressure vessel and with the total length of the heating ovens arranged one behind the other in the axial direction of the tube substantially smaller than the length of the pressure vessel. In addition, a portion of the tube located between the ovens has associated therewith a separate cooling device.

REFERENCES:
patent: 2893847 (1959-07-01), Schweickert et al.
patent: 3188373 (1965-06-01), Brunet et al.
patent: 3366454 (1968-01-01), Folberth et al.
patent: 3725284 (1973-04-01), Touchy
patent: 3877883 (1975-04-01), Berkman et al.
patent: 3884642 (1975-05-01), Benedict
C. J. Frosch et al., J. of the Electrochemical Soc., vol. 108, pp. 251-257, 1961.
F. A. Cunnell et al., J. of Scientific Instruments, vol. 37, Nov. 1966, pp. 410-414.

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