|
Items
|
Unit
|
Index
|
Typical
|
|
Chemical
composition
|
SiO2
|
%
|
99.90 min
|
99.95
|
|
Al2O3
|
ppm
|
300 max
|
120
|
|
Fe2O3
|
ppm
|
50 max
|
30
|
|
Na2O+K2O
|
ppm
|
100 max
|
60
|
|
Refractoriness
|
?/span>
|
1750 min
|
|
Specific gravity
|
g/cm3
|
2.15
|
Mohs hardness
|
---
|
7 min
|
Refractory grade
|
Grains
|
mesh
|
4/10, 10/20, 20/50, 50/100
|
Powder
|
mesh
|
-120, -150, -200, -325, ?/span>
|
|
Application: Investment Casting, Refractory and Electronic industry
|
|
| |
|
PARTICLE SIZE SPECIFICATIONS
|
|
|
cullets
|
4+10 mesh
|
4+20 mesh
|
10+20 mesh
|
20+50
mesh
|
50+100
mesh
|
100+200 mesh
|
|
60mm**
|
|
|
|
|
|
|
|
|
4 mesh
|
|
0%-20%
|
0%-5%
|
|
|
|
|
|
5 mesh
|
|
|
|
|
|
|
|
|
6 mesh
|
|
20%-48%
|
5%-20%
|
|
|
|
|
|
8 mesh
|
|
|
|
|
|
|
|
|
10 mesh
|
|
29%-59%
|
|
0%-1%
|
|
|
|
|
14 mesh
|
|
|
|
|
|
|
|
|
20 mesh
|
|
2%-20%
|
70%-80%
|
80%-95%
|
0%-1%
|
|
|
|
30 mesh
|
|
Pan:0%-2%
|
pan 0%-1%
|
2%-16%
|
25%-40%
|
|
|
|
40 mesh
|
|
|
|
|
32%-45%
|
0%-0.5%
|
|
|
50 mesh
|
|
|
|
0%-4%
|
15%-30%
|
3%-12%
|
0
|
|
70 mesh
|
|
|
|
Pan:0%-2%
|
|
|
|
|
80 mesh
|
|
|
|
|
0%-11%
|
|
|
|
100 mesh
|
|
|
|
|
Pan:0%-0.5%
|
72%-87%
|
0%-5%
|
|
120 mesh
|
|
|
|
|
|
|
|
| ** accumulated ranges, US screen except for cullets |
|
|
PARTICLE SIZE SPECIFICATIONS
|
| |
cullets |
100 mesh |
120 mesh |
200 mesh |
| 60mm** |
|
|
|
|
| |
|
|
|
|
| 40 mesh |
|
|
|
|
| 50 mesh |
|
|
0%-0.5% |
|
| 70 mesh |
|
|
|
0% |
| 80 mesh |
|
0%-1% |
|
0%-0.5% |
| 100 mesh |
|
0%-8% |
4%-12% |
0%-0.5% |
| 120 mesh |
|
|
|
|
| 140 mesh |
|
15%-45% |
7%-13% |
0%-4% |
| 200 mesh |
|
10%-35% |
10%-15% |
3%-9% |
| 270 mesh |
|
7%-30% |
|
|
| 325 mesh |
|
2%-12% |
14%-20% |
13%-20% |
| |
|
pan:4%-20% |
pan:45%-55% |
pan:69%-81% |
|
|
** accumulated ranges, US screen except for cullets
Grains and powders are available in all the internationally used standard sizes. |
