Silbrico

Silbrico
  Silbrico
  
TYPICAL PHYSICAL PROPERTIES
Softening point 1600°F-2000°F
Fusion point 2300°F-2450°F
pH 6.6 to 8.0
Specific Heat 0.20 CAL/G°C
Specific Gravity 2.2 to 2.4
Retractive Index 1.5
% Free Moisture, Max. < 0.5

TYPICAL CHEMICAL ANALYSIS*
Silicon 33.8
Aluminum 7.2
Potassium 3.5
Sodium 3.4
Iron 0.6
Calcium 0.6
Magnesium 0.2
Traces 0.2
Oxygen (by difference) 47.5
    Net Total 97.0
Bound Water 3.0
    Total 100.0

Trace Elements (in percent %)
Arsenic <0.001**
Barium <0.1
Boron <0.01
Chlorine <0.0005
Chromium <0.0075
Copper <0.0015
Gallium <0.05
Lead <0.001**
Manganese <0.3
Molybdenum <0.002
Nickel <0.002
Sulfur <0.2
Titanium <0.1
Zirconium <0.003
**By Food Chemicals
     Codex Method

* All analyses are shown in elemental form even though the actual forms present are mixed glassy silicates. Free Silica may be present in small amounts, characteristic of the particular ore body.

TYPICAL SCREEN ANALYSIS (Packaged in 4 cu. ft. bags)
This listing is for standard grades. Other grades available upon request.

GRADE No. 1 Bag Wt.
31 to 34 Lbs.
Mesh

+8
-8 +10
-10 +20
-20 +30
-30 +50
-50 +100
-100
% Volume

11
14
49
7
8
5
6
% Weight

8
11
51
7
9
6
8
Packing Density

8 Lbs.
per
cu. ft.

GRADE No. 2-A Bag Wt.
28 to 32 Lbs.
Mesh

+8
-8 +10
-10 +20
-20 +30
-30 +50
-50 +100
-100
% Volume

Trace
1
38
22
18
10
11
% Weight

Trace
1
41
18
20
10
10
Packing Density

7.5 Lbs.
per
cu. ft.

GRADE No. 39 Bag Wt.
27 to 32 Lbs.
Mesh

+30
-30 +50
-50 +100
-100 +200
-200
% Volume

12
52
24
8
4
% Weight

5
44
38
9
4
Packing Density

7 Lbs.
per
cu. ft.

GRADE No. 3-S Bag Wt.
10 to 14 Lbs.
Mesh

+10
-10 +20
-20 +30
-30 +50
-50 +100
-100
% Volume

0
5
20
44
19
12
% Weight

0
4
14
41
24
17
Packing Density

3 Lbs.
per
cu. ft.

GRADE No. 5 Bag Wt.
24 to 30 Lbs.
Mesh

+6
-6 +8
-8 +16
-16
% Volume

23
29
33
15
% Weight
< br /> 21
30
31
18
Packing Density

6.5 Lbs.
per
cu. ft.

Silbrico Info
Silbrico Info
Silbrico Info

REFERENCES:
  • J.L.F. Research, Inc., Reports dated December 24,1962, January 2,1964, July 1, 1965.
  • "Thermal Conductivity of Expanded Perlite Cryogenic Fill Insulation," G.R. Kinzer, Jr., ASHRAE Journal, February, 1963 and 1967.
  • Perlite Institute - TDS 2-4 1983