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Low Sodium 92% Alumina Ball Aluminum Oxide Ceramic Balls For Battery Material Processing

Specifications

Brand Name :

Zhongli

Model Number :

AGB-01

Certification :

CE ISO

Place of Origin :

China

MOQ :

1kg

Payment Terms :

L/C,T/T,Western Union

Supply Ability :

40-200ton per month

Delivery Time :

within 15 days

Packaging Details :

plastic + barrel

Shape :

Spherical

Hardness :

9 Mohs

Water Absorption :

0.01%

Packing Density :

3.2 g/cm3

Thermal Expansion Coefficient :

8×10-6/℃

Application :

Grinding and milling of various materials

Density :

3.6 g/cm3

Compressive Strength :

2000 MPa

Thermal Conductivity :

25 W/m·K

Material :

Alumina

Color :

White

Abrasion Resistance :

Excellent

Size :

1mm-50mm

Chemical Resistance :

High

Description

Product Description

Low Sodium Alumina Balls: Ideal for Lithium Battery Material Processing

Name: Low Sodium 92 Alumina Ball Aluminum Oxide Ceramic Balls For Battery Material Processing
Brand: Zhongli
Price: 1 USD

In the rapidly evolving world of lithium battery technology, the quest for optimal materials is relentless. Among the myriad of components, low sodium alumina balls have emerged as a game-changer, especially in lithium battery material processing. These alumina balls not only enhance the performance and safety of lithium batteries but also contribute to the sustainability of the energy sector.

Understanding Alumina in Lithium Battery Technology

Alumina, or aluminum oxide (Al2O3), is a critical component in the manufacturing of lithium batteries. Known for its high purity and low content of harmful impurities such as silicon, iron, sodium, and calcium, alumina plays a pivotal role in ensuring the internal environment of the battery remains stable. This stability is crucial for the efficient functioning and longevity of lithium batteries.

Characteristics of Low Sodium Alumina Balls

Low sodium alumina balls are distinguished by their high purity and low sodium content. This unique composition prevents the introduction of impurities during battery processing, thereby maintaining the integrity of the battery's internal environment. Additionally, these alumina balls boast a small, uniform particle size, which enhances compatibility with electrolytes and improves liquid absorption.

Key Advantages:

High Purity: Ensures no impurities are introduced during battery processing.
Uniform Particle Size: Prevents blockage of diaphragm gaps, enhancing electrolyte compatibility.
Wide Application Range: Suitable for lithium battery diaphragm coating, microcrystalline ceramics, and precision ceramics.

The Role of Alumina in Lithium Battery Separators

The separator in a lithium battery is crucial for preventing short circuits and ensuring the safe operation of the battery. Alumina is often used as a ceramic coating for these separators, enhancing their thermal and mechanical stability. The inclusion of alumina improves the wetting and liquid retention effects, which are vital for maintaining battery performance.

Enhanced Battery Safety and Performance

Using alumina in lithium battery separators offers several benefits:

Improved Safety: Helps prevent lithium dendrite growth, reducing the risk of short circuits, overheating, or fire.
Enhanced Durability: Provides mechanical strength and dimensional stability, preventing diaphragm shrinkage or stretching.
Better Energy Density: Facilitates effective electrolyte transmission, boosting battery energy density and reducing internal resistance.

●Chemical Composition:

Composition	Al₂O₃	SIO₂	CaO+MgO	Fe₂O₃
Wt%	≥92	7 max	≤2	＜0.1

●Typical Properties:

Specific Gravity

g/cm³

Bulk Density kg/L

Hardness

Moh’s

Water Absorption

Self wearing loss %(24hrs)

Compression

Mpa

≥3.65

≥2.2

＜0.01

≤0.012

≥2000

● Sizes Φ:

Size(mm)	Size(mm)	Size(mm)	Size(mm)
0.5-1.0	6.0	20.0	70.0
1.0	8.0	25.0	80.0
2.0	10.0	30.0	90.0
3.0	13.0	40.0	100.0
4.0	15.0	50.0
5.0	18.0	60.0

1. Mechanical & Physical Properties

Property	Alumina (92%)	Alumina (99%)	Zirconia	Steel	Silica Sand
Density (g/cm³)	3.6	3.9	6.0	7.8	2.2
Hardness (Mohs/HV)	9 (~1,500 HV)	9 (~1,800 HV)	8.5	6-7	7
Wear Rate (g/ton)	10–50	5–20	1–5	100+	300+
Compressive Strength	2,000 MPa	2,500 MPa	2,200 MPa	500 MPa	Low

Key Takeaways:

99% Alumina offers 30% lower wear than 92% grade.
2–5x longer lifespan vs. steel in abrasive slurries.
Harder than zirconia but less tough (ideal for fine grinding).

2. Chemical & Thermal Resistance

Property	Alumina (99%)	Performance Impact
Chemical Inertness	Resists pH 1–14	Safe for acids/alkalis, pharmaceuticals.
Max Temperature	1,600°C	Stable in kilns, calcination.
Thermal Shock	Moderate	Avoid rapid quenching (>200°C/min).
Contamination Risk	None	Zero metal ions (critical for Li-ion batteries).

Vs. Competitors:

Beats steel in corrosion resistance.
Outperforms silica sand in wear & consistency.

3. Grinding Efficiency

Particle Size Reduction: Achieves sub-micron fineness (D50 < 1µm) in wet/dry mills.
Speed: Higher density (vs. silica) improves kinetic energy transfer.
Consistency: Uniform shape/size prevents clogging in bead mills.

Best For:

High-purity materials (e.g., ceramics, electronics powders).
Slurry processing (paints, dyes).

4. Industry-Specific Performance

Industry	Benefit of Alumina Balls
Mining	50% lower replacement cost vs. steel in ore grinding.
Pharma	FDA-compliant, no endotoxin release.
Batteries	Prevents Fe/Ni contamination in cathode materials.
Paints	Maintains color purity (no metal leaching).

5. Cost vs. Lifetime Analysis

Media Type	Cost per kg	Lifespan (hours)	Cost per Ton Ground
Alumina (92%)	$5–10	2,000–3,000	$0.50–1.00
Steel	$2–4	500–800	$2.00–4.00
Zirconia	$50–100	5,000+	$0.20–0.50

Trade-Off:

Alumina balances cost and performance – Ideal when zirconia is over-spec.

Performance Summary: Why Choose Alumina?

✅ Cost-Effective: 3x cheaper than zirconia for moderate abrasion.
✅ High-Purity: 99.9% Al₂O₃ for sensitive applications (e.g., pharma).
✅ Versatile: Works in ball/attritor/planetary mills.
✅ Low Maintenance: Non-corrosive, easy to clean.

Limitations:

Not for high-impact milling (e.g., hammer mills).
Thermal shock risk in rapid cooling applications.

Need Custom Alumina Balls?

We supply:

Sizes: 1mm–50mm (±0.01mm tolerance).
Grades: 92%, 95%, 99%, ZTA-composite.
Certifications: ISO 9001, RoHS, FDA (for pharma).

●Package:

25KG/woven bag,1000KG-1250KG for one pallet with shrink wrapped