Inert Ceramic Ball /Alumina Ball /Catalyst Support Ball
Inert alumina balls possess the characteristics of high strength, high chemical stability, low water absorption, and thermal stability. They can resist high temperatures, high pressures, corrosion from acids, alkalis, salts, and various organic solvents, and can withstand temperature changes occurring during the production process. Widely used in petroleum, chemical, chemical fertilizer, natural gas, environmental protection and other industries, they serve as supporting and covering materials for catalysts in reactors. They can buffer the impact of liquids and gases entering the reactor on the catalyst, support and protect active catalysts with low strength, and improve the distribution of liquids and gases in the reactor.
Inert alumina balls have many names. According to their application functions, they can be called packing balls or supporting balls; according to their chemical properties, they can be called inert ceramic balls; according to their chemical composition, they can be called alumina ceramic balls. Regardless of the name, they all utilize the characteristics of inert alumina balls, such as good strength, high hardness, excellent wear resistance, good heat resistance, and low reactivity. Inert alumina balls are made from alumina powder as the main raw material, formed by high-temperature sintering.
According to alumina content, alumina balls are divided into different materials such as feldspathic, feldspar-mullite, mullite, mullite-corundum, and corundum. The ratio is adjusted according to different design requirements of customers. Generally, industrial alumina is used for high-alumina balls, while chemical clay is usually used as the raw material for low-alumina balls.
Product Specifications
|
Item |
Inert Ceramic Ball |
Alumina Ball |
Catalyst Support Ball |
|
Main Composition |
Feldspar, clay, alumina (30%-60%) |
Alumina (60%-99%), yttrium oxide (optional stabilizer) |
High-purity alumina (75%-95%), mullite (optional) |
|
Alumina Content |
30%-60% |
60%-99% |
75%-95% |
|
Vickers Hardness (HV) |
≥ 500 HV |
≥ 800 HV |
≥ 700 HV |
|
True Density |
2.4-2.8 g/cm³ |
3.2-3.9 g/cm³ |
3.0-3.6 g/cm³ |
|
Bulk Density |
1.4-1.6 g/cm³ |
1.8-2.2 g/cm³ |
1.7-2.0 g/cm³ |
|
Water Absorption |
≤ 3.0% |
≤ 0.5% |
≤ 1.0% |
|
Operating Temperature |
≤ 1000℃ |
≤ 1600℃ |
≤ 1400℃ |
|
Particle Size Range |
1mm-100mm (customizable) |
1mm-100mm (customizable) |
1mm-50mm (customizable, precision size available) |
|
Sphericity |
≥ 0.90 |
≥ 0.95 |
≥ 0.95 |
|
Compressive Strength |
≥ 150 MPa |
≥ 300 MPa |
≥ 250 MPa |
|
Chemical Stability |
Resistant to weak acids, alkalis, and organic solvents |
Resistant to most acids, alkalis, salts, and organic solvents |
Highly inert, no reaction with catalysts or reaction media |
|
Packaging |
20kg/50kg sealed plastic bags; 100kg/200kg fiber drums (with moisture-proof lining); custom packaging available |
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