Patent ID: 7792177
Filing Date: 2010-09-07
Classification: B01J,C10L,H05B

Abstract:
1. An electrical calcination furnace enabling utilization of volatile matters comprising: an anode; a cathode; a furnace body having a furnace wall which defines a hearth for containing raw materials to be calcinated; a fume duct disposed in the furnace wall, the fume duct being in communication with the hearth for receiving and directing volatile matters from the hearth; and an air passage disposed in the furnace wall, the air passage being in communication with the fume duct and outer atmosphere for directing air into the fume duct, wherein in operation a resistance heat is generated by applying an electrical current through the raw materials by the anode and the cathode, and a combustion heat is generated by combusting a mixture of the volatile matters, and the air is directed along the fume duct, wherein the anode, the cathode and the fume duct are positioned so that the raw materials located in at least a part of the hearth is heated by the resistance heat and the combustion heat simultaneously, and wherein the fume duct includes a plurality of annular passages spaced apart from one another in a direction along the furnace body, and each of the plurality of annular passages surrounds the hearth.