ELECTRIC FURNACE FOR TREATMENT OF LOOSE MATERIALS Russian patent published in 1997 - IPC

FIELD: electric furnaces for treatment and heating of loose materials. SUBSTANCE: furnace has body inside which heating channel is located; loading and unloading devices are mounted in upper and lower portions of furnace. Heating channel is formed by elements made from conducting and nonconducting materials in form of hollow truncated cones, pyramids or spheroids whose larger bases are connected with larger bases and smaller bases are connected with smaller bases. Elements forming the heating channel are alternating in different combinations from conducting and nonconducting materials. Bases of truncated cones, pyramids and spheroids are interconnected by means of intermediate elements having form of ring, polygon or spheroid in section. EFFECT: avoidance of fluctuations of electrothermal mode and uniformity of temperature in loose material. 3 cl, 2 dwg