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refractory ceramic ball

Refractory ball size is ranged diameter 20~80mm.
 
It’s made of industrial alumina and Kaolin as the mainly raw materials, by process of scientific proportion, shaping, and calcinating at high tempreture .
 
Characters: 
1.good mechanical strength, long service life.
2.Good chemical stability, uneasily reacting with chemical materials.
3.Superior high tempreture resistance, max up to 1900℃。
Specification for Refractory Alumina Ball 
Chemical Analysis Al2O3 % ≥ 65-70
SiO2 % ≥ 25-30
Fe2O3 % ≤ 1.5
Physical Index Bulk density   g/cm3  ≥ 2.3
Bulk spesific weight   kg/m3 1600~1650
Specific surface area   m2/ m3 200~220
Alkali resistance % 85
Absorption % 5
Moh's hardness 7
Thermal shock resistance at 1100, cold water, cycles ≥ 30
Service temperature(℃) 1550
Size(mm) 15-60
Application Regenerator, Incinerator, Smelting furnace
 
Application:
Refractory ball is mainly used as catalyst support and covering fillers in shift converter and reformer of inammonia plant.
 
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