Continuous carbothermal reactor

Details Continuous carbothermal reactor Continuous carbothermal reactor

C - Chemistry, Metallurgy

01

B

23/223, 23/424

C01B 21/072 (2006.01) B01J 8/02 (2006.01) C04B 35/581 (2006.01)

Patent

CA 2031629

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. 37,740-F

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