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3.Expansion ratio of silver raw
vermiculite :7-10tims
Expansion ratio of gold raw
vermiculite :5.5-8times
Bulk density of gold expanded
vermiculite :130-180kgs/m3
Bulk density od silver expanded
vermiculite:100-150kgs/m3
4.vermiculite specification: Porosity: 1100 Kg/m3-1200
Kg/m3
Hardness:1-1.5
Melting point: 1320°C-1370°C
Compressive ressitance: 100 Mpa
-150 Mpa
Index of refraction: Ng=1.525-
1.561 Ng=1.545-1.581
Moisture conten: 7%
Moisture absorbency:<2
Anticongelation: good
Antibioticity: good
Corrosion resistance: Alkali-
resitant
water-absorbable:500-
650liter/m3
5.contact:86-13403119627. seller5 at kedahua dot cn
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