REVERBERATING FURNACE GAS DISCHARGE CONDUIT Russian patent published in 1999 - IPC

FIELD: nonferrous metallurgy, in particular, copper refining reverberating furnaces. SUBSTANCE: gas discharge conduit has cooled vertical gas discharge channel connected with horizontal gas discharge channel, which is provided with heat-absorbing surfaces and air heater mounted within this channel. Air heater is formed of coiled tubular packs. Gas discharge conduit has dust catching and removing hoppers. Hopper has scaly petals positioned on inner side in its lower part at the level making 2/3 of its height. Each petal is attached with its upper part, with lower part being free. Air heater tube coils are offset in vertical plane for distance equal to space between adjacent coiled tube packs. Such construction allows dust to be prevented from settling in air heater and from adhering to hopper wall. EFFECT: increased efficiency and enhanced reliability in operation. 4 dwg