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Insulation engineering solutions
Expanded perlite
Introduction：
Expanded perlite is a kind of white granular material with honeycomb structure inside, which is made by preheating perlite ore and sintering and expanding at instantaneous high temperature. Perlite raw materials can be imported or domestically produced according to user needs.
Product features：
Product performance and technical indicators
Physical characteristics | Unit | Technical parameters |
Use | Storage Thermal insulation of the annular cavity between the inner and outer walls of the tank | |
Loose density | kg/m3 | 35-55 |
| Tap density | kg/m3 | 48-65 |
Average thermal conductivity< /p> | W/(m·K)(0℃) | ≤0.04 |
Water content | % | <0.3 (weight) |
Organic content | % | < 0.1 (weight) |
PH value | 6.5-7.5 |
Expanded perlite particle size distribution
Particle size distribution (%)
| Particle size mm | % Pass rate | |
Minimum pass rate | Maximum pass rate | ||
＞1.18 | 90 | 100 | |
0.85 | 65 | 100 | |
0.6 | 30 | 95 | |
0.3 | 10 | 70 | |
0.15 | 0< /p> | 10 | |
<0.15 | 0 | 10 | |
Applications
In the low-temperature field, it is mainly used for low-temperature cold box insulation and low-temperature double-wall storage tank interlayer insulation.