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Chemical composition
Typical Technical Composition | Min. % | Max. % | Usual % |
SiO2 | ****** | 0.20 | 0.18 |
Al2O3 | 99.00 | 99.60 | 99.30 |
Fe2O3 | ****** | 0.20 | 0.02 |
TiO2 | ****** | 0.55 | 0.02 |
CaO | ****** | 0.10 | 0.20 |
MgO | ****** | 0.10 | 0.05 |
Na2O | ****** | 0.25 | 0.10 |
K2O | ****** | 0.20 | 0.13 |
Physical properties
Index | Value | Value |
Leachable Iron | ≤ 0.01% |
|
Apparent Porosity by Weight | ≤ 7.0% |
|
Moh's Hardness Scale | >8.0 |
|
Water Absorption | <4.0wt.% |
|
Acid Resistance | >99.8% |
|
Thermal Conductivity | 0.7-0.8 w/m 2 .k |
|
Thermal Expansion @ 500°C | 0.10% |
|
Thermal Shock Stability, 1000°C then water cooling | 10 times |
|
Max. Operating Temperature | 1550 °C | 2822 °F |
Specific Density | 3,400 kg /m 3 | 212 lb /ft 3 |
Bulk Density (Packing Density) | 2,100 g /cm 3 | 131 lb /ft 3 |
Crush Strength
Size / | Crush Strength | |||
Nominal Size | (lbs) | (kg) | (N/pc) | |
mm | inch | min. | min. | min. |
3 | 1/8 | 115 | 52 | 510 |
6 | 1/4 | 230 | 105 | 1030 |
10 | 3/8 | 440 | 200 | 1961 |
13 | 1/2 | 1355 | 615 | 6031 |
16 | 5/8 | 1720 | 780 | 7650 |
19 | 3/4 | 2315 | 1050 | 10297 |
25 | 1 | 3130 | 1420 | 13925 |
38 | 1-1/2 | 4034 | 1830 | 17946 |
50 | 2 | 4960 | 2250 | 22065 |
Product Properties1. Low silica content;2. High purity and strength;3. Avoid the problems of leached silica coating downstream equipment or fouling or poisoning the catalyst bed.
Applications:1.Ammonia production:high temperature resistance up to 1250 degree and high strength resistance up to 3500KPA;2.Methanol and hydrogen production;3.Alkylation process using hydrogen fluoride;4.Naphtha reforming;5.Isomerization
high alumina grinding balls (equal to abrasive ball s )Al2O3 99.2%