Zircon refractory bricks

Zirconia refractory

The relative molecular mass of zirconia (ZrO2) is 123.2, the true density is 5.68g/cm3, the melting point is 2670°C, the Mohs hardness is 6.5 degrees, and the average linear expansion coefficient at 20~1000°C is 10×10-6/°C:, 1000 The ℃ thermal conductivity is 2.30W/(m·k). The compressive strength of zirconia ceramic products can reach 2100MPa.

Zircon products are close to acidic refractory materials and have good corrosion resistance to acidic or neutral slag. It is very stable to use under oxidizing atmosphere conditions.

At different temperatures, zirconia exists as monoclinic, tetragonal, and cubic.

What are the products of zircon refractory bricks?

Zircon bricks, pure zirconium bricks, dense zircon bricks, ordinary zircon bricks, zircon corundum bricks, zircon mullite bricks, medium zirconium bricks, zircon hollow ball bricks, etc.

Zircon refractory bricks are made by mixing, forming, drying of ingredients, and firing at high temperature in a shuttle kiln.

How about zircon refractory bricks?

Zircon brick products have dense crystal structure, high bulk density, large volume, high mechanical strength at room temperature and high temperature, good thermal shock stability, small refire shrinkage and high temperature creep, and have extremely high chemical stability and alkali resistance. Sexual medium erosion and other characteristics.

Zircon bricks, in the process of steelmaking, adopt the method of tapping and degassing, and zircon refractories have good corrosion resistance and thermal shock resistance to slag and molten steel, and are suitable for working under reduced pressure. It is widely used in the metallurgical industry as the lining of steel ladles for masonry degassing, as well as the lining of stainless steel ladles, the lining of continuous casting ladles, casting bricks, plug bricks, sleeve bricks and high temperature induction. Electric furnace lining, etc. Zircon refractory bricks have high resistance to acid slag and glass, so they are also widely used in severely damaged parts of glass kilns for smelting active glass. Zircon-based refractories also have the property of not being penetrated by metal aluminum, aluminum oxides and their slag, so they also obtain good results on the bottom of aluminum smelting.

Zircon mullite fused bricks are characterized by dense crystal structure, high softening temperature under load, good thermal shock resistance, high mechanical strength at room temperature and high temperature, good wear resistance, good thermal conductivity, and excellent resistance to slag erosion. This kind of product has a wide range of uses, and is used for the discharge port of metallurgical heating furnace, soaking furnace, calcium carbide furnace, glass melting furnace wall, etc., and the use effect is very good.

Dense zircon bricks are mainly used in soda-lime glass kiln middle layer bricks, arch bricks, etc.; zirconium-containing bricks are mainly used in large glass kiln melting pools, picture tube furnaces, regenerator partition wall bricks and chemical and metallurgical industry furnaces Parts eroded by the solution.