| Product Name: | High Alumina Ceramic Ball |
|---|---|
| Material: | Alumina Ceramic |
| Size: | 3-75 mm |
|
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High-alumina inert ceramic balls are engineered precision spheres manufactured from ≥90% pure industrial alumina (Al2O3), fired at ultra-high temperatures (>1,600°C) to achieve exceptional density and chemical inertness. Designed for extreme chemical and thermal environments, these balls deliver unmatched:
*Mechanical Strength - Resist crushing in high-pressure reactors
*Acid/Alkali Immunity - Withstand concentrated acids (H2SO4, HCl) and caustics (NaOH, KOH)
*Thermal Shock Resistance - Sustain rapid temperature cycling (ΔT >800°C)
*Ultra-Low Contamination - Near-zero leachables for sensitive processes
Primary Functions:
* Catalyst Bed Support - Protect expensive catalysts in hydrotreaters/reactors
* Fluid Distribution - Optimize gas/liquid flow in packed towers
* Reactor Fillers - Minimize void volume in high-temperature vessels
* Abrasion Barriers - Shield sensitive internals from erosive flows
Ideal for: Refineries, petrochemical plants, syngas production, and aggressive acid/alkali processes where standard ceramic balls fail.
| Parameter | Specification Range |
|---|---|
| Alumina Content (Al2O3) | 92%, 95%, 99% (Customizable) |
| Bulk Density | 1.75-1.90 g/cm³ (109-118 lb/ft³) |
| Water Absorption | ≤ 0.5% (Near-zero porosity) |
| Compressive Strength | ≥ 13,000 N/ball (Ø13mm) → Scales with size |
| Hardness (Mohs Scale) | 9 |
| Continuous Operating Temp. | ≤ 1,650°C (3,000°F) |
| Thermal Shock Resistance | >30 cycles (1,000°C ⇄ Room Temp) |
| Acid Resistance (24h) | alleviate <0.1% (20% H2SO4, 100°C) |
| Alkali Resistance (24h) | alleviate <0.2% (20% NaOH, 100°C) |
| Size Range | 3-75 mm (Ø3/6/10/13/16/20/25/30/40/50/75mm) |
| Size Tolerance | ±0.5% (Precision-sorted) |
| Sphericity | >98% (True-sphere geometry) |
| Attribute | High-Alumina Balls (92-99% AlO) | Standard Balls (45-70% AlO) |
|---|---|---|
| Crush Strength | 2.5-3× Higher | Baseline |
| Acid Resistance | Withstands HF, hot H3PO4, conc. H2SO4 | Fails in pH <4 or >10 |
| Lifetime | 8-15 years (harsh service) | 2-5 years |
| Dust Generation | Negligible (<0.01% attrition) | Moderate (>0.1% attrition) |
|
Item
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high alumina ceramic grinding ball
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middle alumina ceramic grinding ball
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|
micro crystal middle alumina
|
carborundum middle alumina
|
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|
Al2O3(%)
|
92% Al2O3
|
95% Al2O3
|
65-75% Al2O3
|
60-70% Al2O3
|
|
SiO2(%)
|
3.81
|
3
|
20-15
|
|
|
Fe2O3(%)
|
0.06
|
0.05
|
0.41
|
<0.5
|
|
TiO2(%)
|
0.02
|
0.04
|
1.7
|
1.8
|
|
Other
|
2.53
|
1.9
|
5
|
10
|
|
Bulk density kg/m3
|
3.65
|
3.68
|
2.93-3.0
|
2.90-3.0
|
|
Water absorption
|
max 0.01
|
max 0.005
|
max 0.01
|
max 0.05
|
|
Moh's hardness
|
9
|
9
|
min 8
|
min 8
|
|
Compressium strength
|
2000
|
2100
|
1000
|
1000
|
|
Abrasion
|
0.01
|
0.0084
|
0.02
|
0.03
|
|
Color
|
white
|
white
|
yellow/white
|
brown
|
|
Raw material
|
calcined alumina
|
calcined alumina
|
refined bauxite powder
|
bauxite powder
|
|
Forming method
|
Isostatic pressing
|
Isostatic pressing
|
impact briquetting
|
handmade
|
*Oil & Gas: Hydrodesulfurization (HDS) reactors, FCC units, guard beds
*Chemicals: Sulfuric acid regeneration, chlor-alkali towers, chloride reactors
*Syngas/Coal Chem: Gasifiers, shift converters
*Environmental: Flue gas desulfurization (FGD), harsh scrubbing systems
*Specialty: peroxide, electronic chemicals, nuclear waste treatment
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