METHOD OF PRODUCING THERMAL ANTHRACITE IN ROTARY TUBULAR FURNACE Russian patent published in 1998 - IPC

FIELD: production of electrode materials. SUBSTANCE: invention concentrates on baking carbon materials to form carbon-graphite electrodes for electric- arc furnaces and electrode mass. Anthracite, prior to be introduced into furnace, is wetted and, during the anthracite baking, gas intake is set after equal time intervals to be equal to 0.47-0.57, 0.1-0.2, and 0.33 fractions of total gas intake. After baking zone, material is maintained at 1200-1300 C for a period of time equal to 0.1-0.2 part of total material residence time in the furnace. EFFECT: increased thermophysical characteristics of anthracite, improved specific resistance, and reduced fuel consumption in baking process. 1 tbl