High Alumina Refractory Balls

  • High Alumina Refractory Balls

Product Description And Parameters

Strong oxidation resistance and slag resistance

Good thermal shock stability

Good thermal conductivity

Small coefficient of thermal expansion

High alumina refractory ball has the characteristics of strong oxidation resistance and slag resistance.High alumina refractory ball is easy to replace and clean and can be reused.
Main specifications of refractory ball: Φ40mm Φ50mm Φ60mm Φ70mm
The material of High alumina refractory ball is divided into high alumina, corundum and zirconium corundum.

High density 90%-99% Al2O3 corundum fireball refractory ball for chemical industry with good price

Refractory corundum ball with low reburning line shrinkage, high temperature under load softening temperature, corrosion resistance, high strength, large heat storage and release, good thermal shock stability, good thermal conductivity, small coefficient of thermal expansion and other remarkable characteristics, is an excellent refractory material.By double preheating of gas (blast furnace, converter) and air (single heat storage mode of combustion supporting air is adopted for oil and high calorific value gas), the exhaust volume of regenerative heating furnace can be reduced by 20-50%, the exhaust temperature can be reduced to less than 150 degrees, the output can be increased by 15-20%, the heating time of billet can be shortened by 50%, and the oxidation burning loss can be reduced by 30-50%.

Types of High alumina refractory ball

High alumina refractory ball can be used in high and low temperature shifting furnaces, reforming furnaces, hydroconverters, desulfurization tanks, and refractory balls and heating conversion equipment that are replaced by hot blast stoves in the steel industry.

Items Technical Data
High Alumina Ball

Modified High


High Alumina

High Density

High Density

Low Confucianism

Al2O3 % 55 65-75 70 70-80
Fe2O3 % 2 1.8 1.8 1.8
Refractoriness 1750 1770 1790 1790
Apparent Porosity % 26 25 24 20
Bulk Density(g/cm3) g/cm3 2.35 2.35 2.6 2.75

Normal temperature

compressive strength

Mpa 10 11 12 13

Refractoriness ℃

under load of 0.2Mpa

1420 1450 1480


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