Continuous carbothermal reactor

Details Continuous carbothermal reactor Continuous carbothermal reactor

1989-12-07

1991-01-08

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

423412, C04B 3538

Patent

active

049835530

ABSTRACT:
By supplying gaseous nitrogen throughout a discrete aliquot of a preferably pelletized mixture of aluminum oxide, carbon and, optionally, calcium oxide during the carbothermal reduction thereof to aluminum nitride and continuously removing gaseous reaction products therefrom, a high quality aluminum nitride is produced. One means of supplying gaseous nitrogen to the mixture of solid reactants is a perforated tray having a hollowed-out bottom. Gaseous nitrogen supplied to the hollowed-out portion flows through the perforations and throughout solid reactants contained in the tray. The carbon may be alternatively supplied, in whole or in part, as a gaseous reactant.

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patent: 4618592 (1986-10-01), Kuramoto
patent: 4784839 (1988-11-01), Bachelard et al.
patent: 4818511 (1989-04-01), Nishi et al.

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