>
Product name
Spec.
Heaping density(kg /m3)
Heat resistance (%)
Acid resistance (%)
Alkaline resistance (%)
Mohs hardness (grade)
Quenched experiment (OC)
Specific heat (Cal/mh OC)
plum blossom supporting ball
F6
1100-1400
1300-1500
99
82
7
20-800
0.15-0.2
F8
1180-1400
F10
1150-1350
F13
1140-1350
F15
1130-1320
F19
1120-1300
F25
1100-1300
F30
1100-1290
=1
F40
1100-1280
F50
1100-1270
F60
1100-1260
AL2O3 ( %)
SiO2 ( %)
Fe2O3 ( %)
CaO ( %)
Na2O ( %)
MgO ( %)
K2O ( %)
other
23-90
68-2
<0.5
<1.8
<0.15
<1.5
burned