In order to realize the operation of complete slag - free steel and slag - retention of the furnace
In the process design of the furnace, in order to completely realize the operation of steel and slag without slag, it is mainly necessary to determine the reasonable distance (eccentricity) between the center of the outlet and the center of the furnace and the size of the outlet, so as to ensure the molten steel and slag in the outlet within 1 to 2min. The steel slag can be extracted as much as possible and can be retained, and the Angle of inclination is not more than 12°-15°, so as to facilitate the maintenance of the steel outlet.
In general structure, it is equipped with a steel outlet box protruding the furnace shell on the side of the original outlet steel to replace the original outlet steel trough. Refractory materials are laid inside the steel box to form a small melting pool, which is connected with the large melting pool at the bottom of the original furnace and smooth transition. The outlet is opened vertically at the bottom of the small molten pool in the outlet box. The upper part of the steel box is provided with a water-cooled cover plate (with an operating hole) to close the small melting pool and clean and maintain the steel outlet. The steel outlet is double-layer structure, the outer layer is square block brick, the inner layer is sleeve brick, and the layer between layer is filled with magnesia refractory material, so as to facilitate the replacement of sleeve brick. The opening and closing of the outlet can be accomplished by the swinging cover plate. The tail brick is cooled with water. The cover and tail brick are made of graphite to protect the furnace from high temperature deformation.
On 2018-08-08 11:45:46
