Medium Alumina Ball
Classification:
Keyword:
- Product Description
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Medium-Alumina Ceramic Balls (31–75% Al₂O₃) provide a cost-effective solution for grinding and catalyst support in medium-temperature applications. They balance performance and affordability, ideal for chemical, ceramic, and mineral processing industries where ultra-high purity is unnecessary but durability is critical.
Characteristics:
1. High fire resistance: The increase in alumina content significantly enhances its fire resistance (typically > 1750°C) and the melting point, which is much higher than that of clay-based refractory materials.
2. Excellent thermal shock resistance: Due to the presence of a certain amount of mullite phase in its structure, it can better withstand sudden temperature changes and is less prone to cracking.
3. Excellent chemical resistance: It has good resistance to acidic slag and molten slag.
4. High mechanical strength: It has sufficient compressive strength at room temperature and high-temperature structural strength.
5. High cost-effectiveness: Compared to products with higher alumina content, its raw material cost and production cost have advantages, making it an economically efficient choice for many applications.Application fields
1. Ceramic building materials industry: Wet ball milling of building ceramic raw materials and glazes; Fine grinding of sanitary ceramic raw materials; Grinding of daily-use ceramic raw materials and glazes.
2. Traditional grinding sector: Processing of non-metallic minerals (such as quartz, feldspar, etc.); Dispersion grinding of chemical pigments and dyes; Processing of powder for pesticides and fertilizers.
3. Emerging application fields: Pre-treatment of environmental protection materials (ceramic granules, adsorbents); Initial grinding of raw materials for refractory materials.
4. Special process scenarios: Media for the initial grinding section of large ball mills; Protective grinding for ordinary white content requirements; General grinding media for teaching experiments.
name of product
Ordinary porcelain ball
23-30% AL203 ceramic balls
Aluminium Ceramic Balls
High Alumina Ceramic Balls
99 High Alumina Porcelain Balls
Al203+SiO2(%)
>93
>92
>93
>94
>99
Al203(%)
17-23
23-30
40-75%
85-97
99
Fe203(%)
<1
<1
<1
<1
0.2
Ca0(%)
<0.5
<1.5
<1.5
<0.5
0.2
MgO(%)
<0.5
<1.5
<0.5
<0.5
0.1
K2O+Na20(%)
<4
<4
<3.5
<4
>0.5
TiO2
<0.5
≤0.5
<0.1
<0.1
0.5
disassociate Leachable
Fe203<0.1
<0.1
<0.005
<0.001
water absorption
<0.5%
<0.5%
<1
<2
2-5
particle density
g/cm32.3-2.4
2.3-2.4
2.6-2.9
3.4
3.2-3.6
operating temperature(max)。C
980
980
1450
1580
1580
Mohs hardness
>6.5
>7
>7
>7.5
>7.5
compressive strength
KN/Particle
φ6mm
>0.5
>0.5
>0.50
>0.6
>1
φ25mm
>6.5
>6.5
>4.9
>55
>8
φ38mm
>8.9
>8.9
>5.5
>54
>8
φ50mm
>9
>9.8
>6.5
>7.8
>15
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