Heat storage ceramic ball is characterized by its high strength, low abrasion loss, large heat capacity and thermal conductivity, excellent resistance to high temperature and the thermal shock. The product is widely used in recuperator in air separation process, and also used in blast furnace gas heating furnaces in iron & steel plants.
Main Performance
|
type
index
|
air separation heat
storage ball
|
heating furnace
heat storage ball
|
|
chemical
composition
|
Al2O3 %
|
20-30
|
60-65
|
|
SiO2+Al2O3%
|
≥90
|
≥90
|
|
Fe2O3%
|
≤1
|
≤1.5
|
|
size mm
|
10-12 / 12-14
|
16-18 / 20-25
|
|
specific capacity J/Kg K
|
≥836
|
≥1000
|
|
thermal conductivity Kcal/mh
|
2.6-2.9
|
/
|
|
thermal shock resistance ℃
|
800
|
1000
|
|
refractoriness ℃
|
1550
|
1750
|
|
abrasion loss %
|
≤0.1
|
≤0.1
|
|
moh’s hardness scale
|
≥6.5
|
≥6.5
|
|
compressive strength N
|
800-1200
|
1800-3200
|
|
bulk density Kg/m3
|
1300-1400
|
1500-1600
|
