Shijiazhuang eternal building materials Company limited
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Price: | 200.0~500.0 USD |
Payment Terms: | T/T,L/C,D/A,D/P |
Place of Origin: | Hebei, China (Mainland) |
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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 |