The invented upright roaster contains stoving bed, hollow wall, roasting chamber, combustion chamber, unloading device and sorrounding tubes for stack gas distribution. Its features are that the stoving bed is conic shape, the beam of stoving bed and fire grate are made with special refractory or beatproof steel, their weights are born by the furnace wall of roasting chamber and the hollow wall eliminating, the water cooled beam is. The hollow wall is cylinderic shape, its weight is born by the pillars of reinforced concrete, eliminating the water cooled beam. The roasting chamber is a circular structure without dead angle, the distribution of air flow and roasting are fairly even. The combustion chamber and the sorrouding tubes for stack gas distribution are linked closely and all are circular structures, so the bearing forces are even, no reinfocement is necessary and can save steel material. The unloading device includes gear roller, catching stuff valve and up and down sealing..... |