High Purity Alumina Ceramic Grinding Ball
Description
Technical Parameters
High purity alumina ceramic grinding balls are made from materials such as bauxite, roller powder, industrial alumina powder, and high-temperature calcined alumina powder with a purity of over 99.5%. They are processed through batching, grinding, powder making (pulping, mud making), forming, drying, and firing to produce finished balls. It has the characteristics of high density (3.6-3.9g/cm ³), high hardness (Mohs 9 level), and strong wear resistance (wear rate<0.01%).
01
Precision physical properties
Density control: 3.6-3.8g/cm ³ (92 ceramic/95 ceramic), upgraded to 3.85g/cm ³ with new technology by 2025.
02
High wear resistance
Wear rate ≤ 0.08 ‰ (95 ceramic), service life is 5-8 times that of ordinary steel balls.
03
High hardness
The Mohs hardness reaches level 9 (second only to diamond), which can efficiently grind high hardness materials such as silicon carbide and titanium dioxide.
04
Compressive strength
≥ 2250MPa (95 ceramic), suitable for high-strength working conditions of large ball mills
Technical Data of High purity alumina ceramic grinding ball
Wet grinding
|
Brand |
HA-92 |
HA-92S |
HA-95 |
|
Al2O3(%) |
≥92 |
≥92 |
≥95 |
|
Bulk density(g/cm³) |
≥3.65 |
≥3.68 |
≥3.68 |
|
Hardness(Mohs) |
9 |
9 |
9 |
|
Wear Loss(%) |
≤0.01 |
≤0.008 |
≤0.01 |
|
Water Absorption(%) |
≤0.01 |
≤0.01 |
≤0.01 |
|
Color |
White |
White |
White |
|
Brand |
HA-92 |
HA-95 |
|
Al2O3(%) |
≥92 |
≥95 |
|
Bulk density(g/cm³) |
≥3.60 |
≥3.65 |
|
Hardness(Mohs) |
9 |
9 |
|
Wear Loss(%) |
≤0.015 |
≤0.012 |
|
Water Absorption(%) |
≤0.01 |
≤0.01 |
|
Color |
White |
White |
|
Size |
13-90mm |
|
|
NOTE: Size can be customized according to customer's requirement. |
||
Application fields of high purity alumina ceramic grinding balls
Preparation of New Energy Battery Materials
Fine grinding of positive and negative electrode materials for lithium batteries.
Replace metal grinding media to avoid iron pollution (lithium battery materials are sensitive to iron), accurately control the particle size of powders such as lithium iron phosphate and ternary materials to reach D50 ± 0.2 μ m, and improve battery energy density and cycle life.
Diaphragm coating assisted processing
Used for dispersing ceramic diaphragm slurry, ensuring the uniformity of nano alumina coating, enhancing the high temperature resistance and electrolyte wettability of the diaphragm (purity ≥ 99.99%)
Electronics and Semiconductor Manufacturing
Electronic ceramic substrates and components
Grind MLCC (multi-layer ceramic capacitor) dielectric paste and integrated circuit substrate to meet the high-frequency insulation requirement of dielectric loss<0.0001
Semiconductor wafer polishing
Nanoscale spherical alumina (Ø 0.5-1mm) is used for CMP polishing of wafer surfaces, achieving roughness ≤ 0.1nm RMS and improving chip yield
High end Chemical and Catalysis
Formation of catalyst support
As a carrier for petroleum cracking catalysts, optimizing pore size distribution can improve reaction efficiency and reduce carbon deposition rate by more than 20%
Special coatings and pigment dispersion
Grinding hard pigments such as titanium dioxide and zirconium silicate to maintain color purity (acid and alkali corrosion resistance, pH 1-14)
Biomedical and Medical Devices
Ultra fine grinding of pharmaceutical raw materials
4N grade high-purity ball grinding of antibiotics and targeted drug intermediates to avoid heavy metal precipitation, in compliance with FDA standards
FAQ
What's the payment?
100% payment in advance, or 30% payment by T/T in advance and 70% balance payment against copy of the B/L.
Can you provide samples?
Yes, the samples are all free, but you need to pay for the freight cost.
Which package do you usually use?
25kg per bag, 40 bags per pallet, total one pallet is 1 ton. Or iron drum. Also can be customized.
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