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