It is a steel-making auxiliary equipment between the blast furnace and the converter. It is mainly used to adjust and balance the supply and demand of hot metal between the blast furnace and the converter, to ensure the continuous supply of the hot metal needed by the converter. The hot metal is stored and mixed in the mixed furnace Composition and uniform temperature, it is very beneficial to converter steelmaking. Mixed iron furnace-generally divided into 300 tons, 600 tons, 900 tons and 1300 tons, mainly composed of: base, furnace body, transmission mechanism, rotary mechanism, cover opening mechanism, blast device, gas air pipe, pneumatic brake delivery device , Dry oil lubrication device, mixed iron furnace platform, electrical system and other 11 parts. The furnace body is composed of a detachable side convex end cover and a round simplification with an iron pouring nozzle and an iron pouring nozzle. The furnace body is filled with refractory material, and a diatomite filler layer is filled between the refractory material and the furnace shell, so as to insulate and buffer the pressure on the furnace shell caused by the thermal expansion of the furnace lining. The filler layer is lined with silicon bath bricks Insulation, diatomite bricks are clay bricks, but clay bricks are working layers that are in direct contact with molten iron. The working layers are built with magnesium bricks. For a 600-ton mixed iron furnace, the total thickness of the lining is 650mm, of which the filler layer is 10mm and the diatomite brick layer is 65mm. Clay brick layer 115mm, magnesia carbon brick layer 460mm. The weight of the whole furnace body is transferred to the supporting base directly fixed on the foundation through the eccentric hoop near the two ends of the simplified Chinese, and the arc roller table composed of round rollers.
There are two types of layout of the mixed iron furnace in the workshop, one is placed inside the span, so that ironing and tapping are carried out in the same span. The other is to arrange between two adjacent spans. Ironing and tapping are performed separately in the two spans.
The mixed iron furnace is used to store and keep the hot metal smelted from the blast furnace, and can mix the molten iron of different temperature and chemical composition evenly smelted from different blast furnaces to supply it to the open furnace or the furnace steelmaking. It belongs to iron and steel metallurgy equipment. The utility model is composed of a furnace door shaft, a furnace door frame, two sets of sliding bearings and two rod-shaped counterweights. The furnace door frame and the furnace are welded together. Each is equipped with a steel sealing groove, inlaid with refractory fibers, refractory bricks embedded in the frame, the two ends of the furnace door shaft are placed on two sets of sliding bearings, the bearing seat is welded on both sides of the iron outlet, and the Each end is installed with a rod-shaped counterweight. There is a fixed angle a between the rod-shaped counterweight and the furnace door frame.
