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It's widely used in petroleum, chemical, fertilizer, gas and environmental protection industries, as a catalyst in the reactor to cover support material and tower packing. It has a high temperature and high pressure resistance, bibulous rate is low, the characteristics of the chemical performance is stable. Can withstand the erosion of acid, alkali and other organic solvents, and can endure in the production process of temperature changes. Its main function is to increase gas or liquid distribution points, support and protection intensity is not high activity of the catalyst.
| Al2O3 + SiO2 | Al2O3 | Fe2O3 | CaO | MgO | K2O + Na2O | Other |
|---|---|---|---|---|---|---|
| > 93% | 23% | < 1% | < 0.5% | < 0.5% | < 4% | < 0.5% |
* Leach able Fe2O3 is less than 0.1%.
| Item | Value |
|---|---|
| Water absorption (%) | >0.5 |
| Bulk density (g/cm³) | 1.35 - 1.41 |
| Specific gravity (g/cm³) | 2.3 - 2.4 |
| Free volume (%) | 40% |
| Operation temp. (max) (℃) | 1250 |
| Moh's hardness (scale) | >6.5 |
| Acid resistance (%) | >98 |
| Alkali resistance (%) | >92 |
| Size | Crush Strength | |
|---|---|---|
| Kg/particle | KN/particle | |
| 1/8" (3mm) | >35 | >0.35 |
| 1/4" (6mm) | >60 | >0.60 |
| 3/8" (10mm) | >85 | >0.85 |
| 1/2" (13mm) | >185 | >1.85 |
| 3/4" (19mm) | >487 | >4.87 |
| 1" (25mm) | >850 | >8.5 |
| 1-1/2" (38mm) | >1200 | >12 |
| 2" (50mm) | >5600 | >56 |
| Size and tolerance (mm) | ||||
|---|---|---|---|---|
| Size | 3 / 6 / 9 | 9 / 13 | 19 / 25 / 38 | 50 |
| Tolerance | ± 1.0 | ± 1.5 | ± 2 | ± 2.5 |
They are widely utilized across petrochemical, chemical, fertilizer, natural gas, and environmental protection plants as catalyst bed support and reactor tower packings.
They act as support and covering media for catalyst beds, improving fluid/gas distribution patterns while protecting delicate catalyst structures from thermal and pressure variations.
The material exhibits excellent thermal properties, accommodating maximum continuous process operating temperatures up to 1250°C.
With an acid resistance exceeding 98% and alkali resistance above 92%, it reliably endures severe chemical attack from corrosive acids, bases, and organic compounds.
The leachable Fe2O3 content remains below 0.1%, preventing contamination of sensitive downstream catalysts and processes.
