Crude Perlite Ore
|
- - - -
|
A
|
B
|
C
|
|
SiO 2 (%)
|
72.59
|
72.59
|
72.23
|
|
Al2O3(%)
|
12.63
|
12.46
|
12.31
|
|
K2O(%)
|
4.74
|
4.65
|
4.67
|
|
Na2O(%)
|
3.45
|
3.45
|
3.29
|
|
Others (%)
|
6.59
|
6.46
|
7.5
|
|
Specific Gravity
|
2.26
|
2.4
|
2.32
|
|
Hardness(HV)
|
648
|
643
|
652
|
|
Expansion Rate
|
K0≥15
|
K0≥15
|
K0≥18
|
|
Expa-temperature(℃)
|
1000-1200
|
1050-1250
|
1200-1300
|
|
Pre-heating (℃)
|
300-400
|
300-400
|
350-420
|