Component Composition Of Refractory Materials

     Jes Refractories used in refractory masonry pit and its related parts are hot-working equipment for heating and heat-resisting ingot in the first rolling mill. The refractory used in building furnace is gradually changed from refractory brick to amorphous refractory, and the service life of the body is improved greatly. The upper one-side burner heat-exchanging soaking furnace (see photo) has the advantages of compact pit layout, large ingot loading, good quality of burning steel, high utilization rate of Liao material and easy to realize automatic control.Refractory Materials

     The furnace body is composed of furnace bottom, furnace wall and Shanghai cover, which is square or rectangular, also known as pits. The furnace wall is divided into side walls and end walls. Depending on the height of the ingot, the height of the furnace wall is generally 31 SM and the wall thickness is about 580mm. Refractory Materials

     When the furnace wall is high, it is necessary to dispose the tensile brick or metal anchor piece in the wall and upper part to enhance the stability of the furnace wall. The furnace wall is damaged faster by the mechanical wear and impact of high temperature, sudden temperature, slag erosion, steel ingot and clamping clamp of loading machine. Therefore, the use period of the furnace wall, that is, the service life of soaking pits.Refractory Materials

     In the furnace wall, the lower part of the general use of silica brick masonry. The strength and load softening temperature of silica brick are all higher, 76. ℃ above the thermal expansion rate is small, the volume stability is good, and the surface forms the thin metamorphic layer, does not produce the structure spalling, therefore the service life is longer, generally is the 1~2a. The bottom of the furnace wall needs Magnesia brick or magnesia-chrome brick protective layer to resist the erosion of the oxidized slag. Refractory Materials

    The upper part of the furnace wall is usually built with clay bricks and high alumina bricks, and the sand seal bricks are built on top of it, and the inner quartz sand is used to make the sand sealing knife around the lid of the furnace to be planted to ensure the tightness of the pits. When the furnace wall is masonry with high alumina bricks, the service life of the upper one-side burner soaking pit with dry slagging operation is about 2a.Refractory Materials