Method of producing carbonaceous blocks in a tunnel type furnace

Details Method of producing carbonaceous blocks in a tunnel type furnace Method of producing carbonaceous blocks in a tunnel type furnace

1983-08-05

1986-02-11

Dixon, Jr., William R.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

264 291, 264 296, 264 297, C01B 3100

Patent

active

045698350

ABSTRACT:
This invention relates to a method of producing carbonaceous blocks, and more particularly to a method of manufacturing anodes for the electrolytic reduction of aluminum, consisting of coating said blocks with an antioxidizer protective powder and calcining them while being passed through a tunnel type furnace in an oxidizing atmosphere in conformity with thermal conditions whereby, as said blocks reach a temperature of 200.degree.-600.degree. C. at which they release volatile organic substances, said oxidizing atmosphere has a temperature of at least 550.degree. C.; thus, complete combustion of the volatile substances is accomplished in said furnace to yield gases which are free of said volatile organic substances, and wherein said blocks later attain a final baking temperature of up to about 1,200.degree. C.

REFERENCES:
patent: 1170313 (1916-02-01), Nagelschmitz
patent: 2594226 (1952-04-01), Shea, Jr.
patent: 2983022 (1961-05-01), Dressler et al.
patent: 3009863 (1961-11-01), Angevine
patent: 3822190 (1974-07-01), Fischer

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