1/ The furnace structure is jointing by A3 steel plate and shaped steel. Furnace bottom adopts I beam and channel steel as frame, frame sealing 8-10mm A3 plate. The furnace side USES I beam and channel steel,the frame sealed 8-10mmA3 plates. All of the frame and stll plate interface welded, good rigidity and tightness.the funace door frame welded by channel and steel plate. 2/Corhart : The melting pool and furnace bottom is built by high quality seep-resist aluminum brick. Over the melting pool adopts high quality third class alumina brick,the out insulation use 20mm alu silicate stick on the armor plate and then masonry diatomite insulating brick.the thickness of furnace wall is 500mm. The furnace door welded 10mmA3 board and welded in gridding type, fill in cotton and low cement high-strength concrete pouring materials,sealing surface flatness,to fit with the seal of furnace,the structure is simple and practical. The door with a weight tray jointing by rope or chain. After the door and weight tray jointing,the both weight just balance, the door stopped random in travel.the lifting motion is hydraulic or windlass. 4/ The burning system is controlled automatic to ensure the temperature of aluminum water is controlled in enactment ±3℃. When up to the enactment temperature it will stop and ignition automatic.