Introduction of Zirconia Grinding Balls

Zirconia Grinding Balls are high-performance ceramic grinding media made from zirconia (ZrO₂), which is usually stabilized (e.g., by adding yttrium oxide) to enhance its mechanical properties and wear resistance. With high hardness, high density, and excellent chemical stability, zirconia grinding balls are widely used in powder grinding, dispersing, and mixing processes and are ideal for efficient grinding and fine processing.

Features of Zirconia Grinding Balls

High hardness and wear resistance: zirconia’s hardness is close to 9 Mohs, which can effectively resist wear and prolong service life.

High density: the density is usually around 6.0 g/cm³, which provides higher impact energy and enhances grinding efficiency.

Chemical stability: extremely resistant to acids, alkalis, and organic solvents, suitable for a wide range of chemical environments.

Low contamination: virtually no impurities are introduced during the grinding process, ensuring high purity of the powder.

Excellent impact resistance: stabilized zirconia has high toughness and can withstand high-speed impacts without breaking.

Smooth surface: after precision processing, the surface is smooth, which reduces the wear and tear on the grinding equipment.

High temperature resistance: able to maintain stable performance under high temperature environment, suitable for high temperature grinding process.

Parameters of Zirconia Grinding Balls

Parameter	Description	Typical Values/Range
Chemical Composition	Primary component is ZrO2, with possible stabilizers added	ZrO2 ≥ 95%, Stabilizers like Y2O3
Density	Mass per unit volume of the material	5.8 – 6.1 g/cm³
Hardness	Resistance to permanent deformation	Vickers Hardness: 1200 – 1400 HV
Corrosion Resistance	Ability to resist chemical attack	Resistant to most acids and bases
Size Range	Diameter of the spheres	1mm, 3mm, 5mm, 10mm, 15mm, 20mm, etc.
Roundness	Precision of spherical shape	High precision, minimal error
Surface Finish	Surface roughness	Ra < 0.05 μm
Thermal Stability	Stability under high temperatures	Excellent thermal stability
Color	Appearance color	White or off-white

Applications of Zirconia Grinding Balls

Powder grinding and dispersing: used for ultra-fine grinding and dispersing of paints, inks, dyes and pigments; used as a grinding medium in the preparation of electronic materials, ceramic powders and chemical raw materials.

Pharmaceutical and food industry: for nanoscale grinding of pharmaceutical active ingredients (APIs) to improve solubility and bioavailability of drugs as grinding media in the preparation of food additives and functional powders.

Electronics and semiconductor industry: used for fine grinding of electronic ceramics, magnetic materials, and semiconductor powders; used as highly efficient grinding media in the preparation of positive and negative electrode materials for lithium batteries.

Mining and metallurgy industry: used for ultra-fine grinding of ores, metal powders, and slag; used as grinding media in the purification process of precious and rare metals.

Environmental protection and energy sector: for grinding catalysts, fuel cell materials, and solar cell powders; as grinding media in the preparation of wastewater treatment and environmental remediation materials.

Laboratories and research institutes: for powder grinding and dispersion experiments in material science research; as grinding media in the preparation of nanomaterials and high-performance ceramics.

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years experience in providing super high-quality chemicals and Nanomaterials.

The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.

If you are looking for high-quality Zirconia Grinding Balls please feel free to contact us or click on the needed products to send an inquiry. 

Payment Term

T/T, Western Union, Paypal, Credit Card etc.

Packing and Storage

The product is in powder form and should be stored in a cool, ventilated place. Avoid inhalation when using it and keep away from open flames, heat sources, etc.

Shipment Term

By air, by sea, by express, as customers request.

FAQs of Zirconia Grinding Balls

Question 1: What industries are zirconia grinding balls used in?

Answer: Zirconia grinding balls are widely used in ceramics, glass, electronic materials, paints and coatings, pharmaceuticals, cosmetics, mineral processing, and other industries. They are used in wet ball mills for fine grinding and uniform mixing of materials to ensure product quality.

Question 2: Why choose zirconia as grinding media?

Answer: Zirconia material has very high hardness (Mohs hardness of about 8.5-9), good wear resistance, and excellent corrosion resistance. This enables zirconia grinding balls to maintain shape and dimensional stability over a long period of time, reducing wear losses and not contaminating the material being ground, ensuring the purity of the final product.

Question 3: What are the different types of surface treatments available for zirconia grinding balls?

Answer: Zirconia grinding balls can be subjected to a variety of surface treatments in order to improve performance or to meet specific application requirements, such as polishing to improve smoothness and reduce the coefficient of friction, coatings to form a protective layer on the surface of the ball to enhance resistance to chemical attack, and special processes, such as plasma spraying, which are used to impart additional functional properties.

Question 4: How do I choose the right size of zirconia grinding balls?

Answer: Choosing the right size of zirconia grinding ball depends on the specific grinding task. In general, smaller diameter balls are suitable for fine grinding and high shear applications, providing a higher collision frequency, while larger diameter balls are better suited for coarse grinding because they transmit more impact energy. In addition, factors such as equipment capacity and material properties need to be considered to determine the optimum size.

Question 5: How do zirconia grinding balls affect the quality of the final product?

Answer: Zirconia grinding balls have a direct impact on the quality of the final product. High-quality zirconia grinding balls ensure that the material is ground uniformly and finely, resulting in a smaller, more consistent particle size distribution. This not only improves the physical properties of the product (e.g., flowability, fillability) but also ensures a homogeneous mixing of the chemical components, which is particularly important for applications requiring high purity and fine particle size. In addition, the zirconia material itself is chemically inert and does not react with the material being processed, thus avoiding the introduction of impurities and ensuring product purity.