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Regenerative balls  

Heat storage ball
Our company designs and produces heat storage balls made of high alumina, alumina mullite, chromium corundum mullite with dia 11-22mm. Chromium corundum mullite heat storage balls have specially good residue resistance., quick heat transfer, large capacity and heat storage capacity. These features overcome the following disadvantage of common heat storage balls: easy to form slag and easy to pulverize . Therefore, their energy saving effect and life-span are greatly increased and they are very popular to customers.
Physical and chemical performance parameter of heat storage ball


item

material

 

High alumina

alumina mullite

chromium corundum mullite

AL2O3

≥65/70

≥70

≥70

SiO2

MgO

Fe2O3

density(g/cm-3)

≥2.4

≥2.5

≥2.6

Pile density (Kg/cm-3)capacity weight

1500-1700

1450-1650

1550-1800

Surface area (m2·m-3)specific area

120-160
¢11-13mm

105-120
¢14-16

95-105
¢17-19mm

heat expansion coeffcient(*10-6/℃)(20-1000℃

≤6.5

≤5.5

≤6.5

(J(Kg·K)-1 specific heat capacity

≥1.05

≥1.0

≥1.05

Thermal conductivity (1000℃)thermal conductivity

≥1.5

≥1.6

≥1.7

1000℃-20℃Water / times water quench test

≥25

≥30

≥30

Maximum temperature ℃Max service temperature

1450/1500

1550

1600

Thermal shock resistance 1100℃ Water

≥20

≥22

≥22

 

1, chemical stability, non-chemical reaction with the material, thermal storage temperature protection effect is good. 
2, mechanical strength, the use of a long cycle. 
3, high temperature performance, high heat resistance up to 1700 degrees, especially for use in the steel industry, hot air furnace and heating conversion device, in the conversion furnace, pushing plate kiln ball of gas-liquid dispersion and supporting the role of heat storage insulation. 
4, fire-resistant ball Main Specifications: ¢ 15mm-30mm

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