1. Furnace Refractory Materials for Converters
At present, magnesia carbon bricks are used for the furnace caps, tapholes, front and rear large faces, molten pools and furnace bottoms of the converter, high strength magnesia carbon bricks are used for the trunnions and slag lines.
Magnesia content in the magnesia carbon brick is generally 70 to 75%, the graphite content is 16 to 20%, the bulk density is 2.8 to 2.9 g/cm3, and the compressive strength is 25 to 30 MPa.
High strength magnesia carbon brick with the same composition as magnesia carbon brick, but with a compressive strength of 30 to 42 MPa.
2. Industry Refractory Materials for Electric Furnaces
The furnace bottom, furnace slope and molten pool of the electric furnace are integrated with magnesia, or magnesia bricks combined with magnesia carbon brick and tar pitch, hot and slag line areas, using high quality magnesia carbon bricks,both sides of the furnace door and tapping steel El. It is a magnesia refractory brick and a chrome magnesia brick, the electric furnace cover is a high aluminum brick or a high aluminum non burned brick.
3.Refractory Materials for Ultra High Power Electric Furnace
The permanent lining of the ultra high power electric furnace is magnesia, the side column of the furnace door is magnesia chrome brick, the slag line is magnesia brick, the hot spot is magnesia carbon brick, the furnace wall is magnesia carbon brick, the eccentric bottom and the molten pool are magnesia brick, outside the steel mouth is magnesia carbon brick, the electric furnace cover is high aluminum brick, and the tapping hole filler is high iron dolomite filler.
4. Refractory Materials for Open Hearth Furnace
Furnce refractory material can be seen from the working conditions of various steelmaking furnaces that the working environment of the refractory material is very bad, therefore, no matter what refractory material is used, it must have the following properties.
1.High Temperature Resistance and High Refractoriness.
2. Refractory materiaL erosion and erosion of high temperature resistant steel and slag.
3.Refractory material for smelting furnace is intermittent operation, the refractory material is required to have good thermal shock resistance and peeling resistance.
4.Refractroy material has high mechanical strength and can withstand the impact of the body tilting and loading into the charge without damage.
