Ceramic Ball

Typical Technical Composition

Min.%

Max. %

Usual %

Si02

61.50

77.00

74.90

AI203

18.50

26.00

19.90

Fe203

******

1.60

0.90

ri02

****** 1.40

0.93

CaO ******

1.00

0.13

MgO ******

1.00

0.34

Na20 ******

1.80

1.56

K20 ******

5.50

2.34

AI203+Si02

90.00

96.00

92.80

= Physical properties

Index

Value

Value

Leachabte Iron

<0.1%

Apparent Porosity by Weight

2-6%

Moh's Hardness Scale

>6.5

Water Absorption

<1.0wt%

Add ResistafKe

>99.8%

Thermal Corxlucbvity

0.9-1.0w/m2 .k

Thermal Expansion @ 500 'C

! 0.20%

Specific Heat

628-837 j/kgq

Thermal Shock Stability, @ 500 "C then water cooling

10 times

Max. Operating Temperature

1050 x: 1

1922 T

Specific Density

2,200 kg /m 3 |

137 lb/ft 3

Bulk Density (Packing Density)

1,300g/cm3 |

81 Ib/fl3