Products Introduction
Refractory balls are made of industrial alumina and other refractory materials through mixing, molding and firing. Composed of a certain amount of aluminum, the surface is smooth, corrosion-resistant and wear-resistant, high-strength, large thermal conductivity and heat capacity, high thermal efficiency, especially excellent thermal stability, extremely high temperature resistance, high temperature resistance up to 1900°C. Storage temperature changes are not easy to break. Refractory balls are usually used as supporting and covering fillers for catalysts in converters, reformers, hydroconverters, desulfurizers, methane converters, etc., and can also be used as fillers for hot blast heaters and hot blast stoves. Can be used as thermal transformers in the steel industry. It has excellent chemical stability and does not react with materials.
Heat Storage Ceramic Ball And Thermal Storage Alumina Beads For Accumulator
Heat storage ceramic ball has the advantages of surface smooth, corrosion resistance, high strength, low abrasion loss, large heat capacity and thermal conductivity, high heat storage efficiency, good thermal stability, excellent resistance to high temperature and thermal shock.
Heat storage ceramic ball have been effectively used in regenerator in air separation process, and also used to pre-heat the gas and the air in coal gas heating furnace in iron & steel plant.
Main specifications: Φ16mm, Φ18mm, Φ20mm, Φ25mm.
Material: High aluminum and corundum mullite.
Typical chemical compositions
|
Performance / Type |
Using for Gas separation |
Using for heating furnace |
|
Al2O3 % |
20-30 |
45-75 |
|
SiO2±Al2O % |
≥92 |
≥95 |
|
Fe2O3 % |
≤1 |
≤1.5 |
|
Size mm |
10-12/12-14 |
16-18/20-25 |
|
Thermal capacity J/kg.k |
≥836 |
≥1000 |
|
Specific heat conductance w/mk |
2.6-2.9 |
|
|
Applicable temperature °C |
20~800 |
20~1000 |
|
Fire resistance °C |
1550 |
1750 |
|
Compression resistance strength N |
800-1200 |
1800-3200 |
|
Bulk density kg/m3 |
1300-1400 |
1500-1600 |
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