EGYPTIAN foundry SAND
EGYPTIAN foundry SAND
What is Foundry Silica?
For many years there has been a requirement for high quality silica sand in the Foundry industry. Foundries use a clean, well graded sand to produce moulds for the production of metal castings which are the basis of engineering and manufacturing industries across the world.
Foundries in the vary in size and in type with some capable of producing extremely high quality, specialist parts for the aero space mining and automotive industries, Foundry applications are by far the most demanding of sand. For mould or core making, the sand is mixed with a chemical binder, or bentonite water and coal dust if required. This would be for green sand moulding, where the sand remains uncured, but rigid enough to be able to cast molten metal compacted over a shaped pattern, or into a core cavity and removed (stripped) when sufficient strength has developed
Critical requirements include:- Grain (particle) Shape
- Nominal particle size
- Particle size distribution
- Composition
- Thermal stability
We produce specialist and Industrial Sands for a range of uses from foundry to grout and drainage systems.
|
PRODUCTS |
20-30 AFS |
30-35 AFS |
35-40 AFS |
40-45 AFS |
47-52 AFS |
SCREENS |
|
|||||
1 mm |
1-15 |
0-5 |
0-1 |
0-1 |
0 |
|
710 µm |
10-30 |
2-10 |
1-5 |
1-4 |
0-1 |
|
500 µm |
25-55 |
21-43 |
10-33 |
7-22 |
1-7 |
|
355 µm |
8-36 |
20-42 |
18-45 |
15-42 |
6-25 |
|
250 µm |
0-15 |
3-26 |
10-40 |
28-48 |
25-55 |
|
180 µm |
0-4 |
1-8 |
2-15 |
5-25 |
20-45 |
|
125 µm |
0-2 |
0-1 |
0-4 |
0-5 |
3-10 |
|
90 µm |
0-0,5 |
0-1 |
0-2 |
0-1 |
0-1 |
|
63 µm |
0 |
0 |
0 |
0 to 0.2 |
0-, 02 |
|
AFS Number |
20-30 AFS |
30-35 AFS |
35-40 AFS |
40-45 AFS |
47-52 AFS |
|
COVER. GRAIN GRAIN (µm) |
500-700 |
450-600 |
390-450 |
390-330 |
320-270 |
|
QUANTITY OF CLAY (%) |
0.1 to 0.16 |
0,1-0,2 |
0.1 to 0.22 |
0.14 to 0.24 |
0.2-0.3 |
|
|
PRODUCTS |
55-60 AFS |
60-65 AFS |
65-70 AFS |
70-75 AFS |
80-100 AFS |
110-140 AFS |
SCREENS |
|
||||||
1 mm |
0 |
0 |
0 |
0 |
0 |
0 |
|
710 µm |
0-1 |
0 to 0.1 |
0 |
0 |
0 |
0 |
|
500 µm |
1-3 |
0-1 |
0-0,5 |
0-0,5 |
0 to 0.1 |
0 |
|
355 µm |
4-30 |
0-3 |
0-2 |
0-2 |
0-2 |
0 |
|
250 µm |
25-55 |
15-30 |
7-25 |
2-15 |
0-5 |
0-1 |
|
180 µm |
30-60 |
40-60 |
30-65 |
20-50 |
2-25 |
0.5-3 |
|
125 µm |
1-20 |
10-25 |
10-35 |
25-55 |
40-70 |
9-25 |
|
90 µm |
0-2 |
0-4 |
0-10 |
3-15 |
5-35 |
35-60 |
|
63 µm |
0-, 02 |
0-2 |
0-2 |
0-3 |
0-5 |
10-30 |
|
AFS Number |
55-60 AFS |
60-65 AFS |
65-70 AFS |
70-75 AFS |
80-100 AFS |
110-140 AFS |
|
COVER. GRAIN GRAIN (µm) |
270-240 |
210-240 |
210-180 |
180-170 |
170-140 |
120-90 |
|
QUANTITY OF CLAY (%) |
0.2-0.3 |
0.3-0.5 |
0.3-0.5 |
0.4-0.6 |
0.6-0.8 |
0,8-1,2 |
|
