HEATING FURNACE

摘要

A method and apparatus for heating a material to a high temperature in a heating drum. The heating drum, capable of heating to a high emperature and rotatable around an axis, is light weight and can be mobile on wheels. The metal drum has a smooth mirror-like and wear resistant inner surface. Infrared radiation is reflected from the mirror-like polished metal surface back into the heating drum and to a material to be heated, which is at the same an abrasive of which is supplemented with an abrasive. The transfer of radiation heat from metal to a material to be heated is efficient by virtue of the metal's heat delivering capacity. Heating temperatures can be increased by virtue of the drum being fireproof or refractory.