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color:white
shape:block and particals
Main usage:heat preservation
rubber,plastic,cable
and sound insulation
Perlite sand(unexpanded perlite):12-16mesh,14-20mesh,16-32mesh,20-40mesh
30-50mesh,50-150mesh,200-325mesh
Physical and Chemical Properties of Expanded Perlite :
|
Physical Properties
|
Chemical Compositions |
||
|
Exterior |
Grey peppets |
SiO2 |
68-74 |
|
Specific gravity |
2.2-2.4g/cc |
Al2O3 |
12-16 |
|
Vickers hardness |
5.5-7 |
Fe2O3 |
0.1-2 |
|
Softening point |
890-1090 |
CaO |
0.15-1.5 |
|
Melting point |
1280-1350 |
Na2O |
4-5 |
|
PH |
6.5-7.5 |
K2O |
1-4 |
|
Liquid solubility |
<1% |
Loss in burning |
4-8 |
|
Acid solubility |
<2% |
MgO |
0.3 |
|
Dioptre |
1.483-1.506 |
|
|
