
Introduction
High alumina inert ceramic balls are inert ceramic spheres made mainly from high-purity alumina (with an alumina content typically ≥71%) through high-temperature sintering. They possess extremely strong chemical stability, high-temperature resistance (capable of withstanding temperatures above 1200 ° C), acid and alkali corrosion resistance, high mechanical strength, low thermal conductivity, and uniform bulk porosity. And it is not prone to chemical reactions with the medium during use. It is mainly applied in the catalyst support layer of industries such as chemical engineering, petroleum, and natural gas. For instance, it serves as a support filling material for catalyst carriers in fixed-bed reactors, desulfurization towers, and shift furnaces. It can also be used in scenarios such as gas distribution and liquid filtration. Its core function is to form a stable support structure through uniform accumulation, preventing the catalyst particles from moving down and blocking the pipeline. At the same time, it takes advantage of its inert nature to avoid side reactions with the reaction medium, ensuring the uniform distribution of gas or liquid flow during the process, improving the efficiency of catalyst utilization and the stability of equipment operation, and extending the operation cycle of the device.

applications:
- Filler material: High-alumina balls are also used in the field of filler materials, such as for filling tower plates, and as fillers in zeolites and plastics.
- Refractory materials:High-alumina refractory balls are mainly used in industrial furnaces to store heat, suitable for blast furnace iron smelting, hot air furnace, fertilizer plant, high-and-low temperature change furnace, conversion furnace, hydrogen conversion reactor, desulfurization tank and methanation furnace, etc. industrial furnaces.
- Catalyst carrier and filler:High-alumina ceramic balls have important applications in the catalyst carrier in the petroleum, chemical, and power industries, effectively dispersing the catalyst, improving the activity of the catalyst, and serving as fillers and support materials to increase the reaction area, promote the uniform distribution of fluid, and improve the mass transfer and heat transfer efficiency.
- Environmental protection field: High-alumina balls also have applications in the field of environmental protection, such as as adsorbents or reactants in wastewater treatment and flue gas desulfurization processes, effectively removing harmful substances from wastewater or flue gas and reducing environmental pollution.
ChemicaI Composition
Al2O3 | SiO2 | Fe2O3 | CaO+MgO | TiO2 | K2O+Na2O |
90—99% | ≤0.25% | ≤0.1% | ≤0.2% | ≤0.1% | ≤0.4% |
Technical Parameters of Alumina Ceramic Balls
Parameters of Inert Alumina Ceramic Balls | |
Item | Value |
Water absorption (%) | <5 |
Bulk Density (kg/m3) | 1.8-1.9 |
Operation temp.(max) (℃) | 1500 |
Moh’s hardness (scale) | >7 |
Acid resistance (%)(%) | >99.6 |
Alkali resistance (%)(%) | >85 |
high alumina ceramic balls Crush Strength
Crush Strength | ||
Size | Crush Strength | |
(kg) | (N/pc) | |
1/8″(3mm) | >55 | >0.45 |
1/4″(6mm) | >90 | >0.80 |
3/8″(10mm) | >125 | >15 |
1/2″(13mm) | >215 | >2.2 |
3/4″(19mm) | >557 | >4.97 |
1″(25mm) | >1050 | >9.5 |
1-1/2″ (38mm) | >1500 | >14 |
2″(50mm) | >6600 | >66 |

The market price of high alumina ceramic balls:
The price of high alumina ceramic balls varies depending on factors such as alumina content, size specifications, and production processes. Generally speaking, the higher the alumina content, the larger the size specifications, and the more complex the production process, the higher the price. For example, the price of ordinary high alumina ceramic balls may be in the thousands of yuan per ton, while some high-performance, high-precision products may exceed 10,000 yuan per ton.
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