Nikkato, the general agent of South China, specializes in high-purity and fine alumina balls from Japanese Taobao

Nikkato, the general agent of South China, specializes in high-purity and fine alumina balls from Japanese Taobao

Nikkato, the general agent of South China, specializes in high-purity and fine alumina balls from Japanese Taobao

1、 Product positioning: High purity and high-performance flagship grinding media

SSA-999W belongs to the NIKKATO product systemHigh Purity&High Performance Grade, is one of the flagship series of the brand's alumina balls. This series includes two sub models:

• SSA-999WStandard high-purity high-performance type, available in various specifications ranging from 1 to 25mm in diameter

• SSA-999SMicrosphere specific type, providing ultra-fine grinding specifications ranging from 0.5 to 5mm in diameter

Compared to the general grade (HD series, 93% purity) and high-purity grade (SSA-995, 99.5% purity), SSA-999W improves the purity of alumina to99.9%At the same time, pushing the hardness to the top level in the industry, designed specifically for high value-added fields such as electronic materials and new energy batteries.

2、 Core Features and Technical Parameters

1. Ultra high purity: 99.9% Al ₂ O ∝

The purity of SSA-999W alumina has reached99.9%The impurity content is extremely low. This characteristic has decisive significance in the grinding process:

• Avoid cross contaminationDuring the grinding process, impurities such as Fe ₂ O ∝ and SiO ₂ will not be introduced, ensuring the chemical purity of the material being ground

• Compliant with electronic grade standardsThe radioactive element (U/Th) content is extremely low, meeting the stringent requirements in fields such as semiconductor packaging and lithium battery materials

• Ensure product consistencyHigh purity eliminates the interference of impurities on the performance of the final product, ensuring stability between batches

2. Ultra high hardness: 1800 HV10

The Vickers hardness of SSA-999W has reached1800 HV10It is the highest hardness level in the alumina ball series. High hardness brings the following advantages:

• wear resistanceCapable of efficiently grinding high hardness materials (Mohs hardness above 7), including various ceramic raw materials and electronic functional materials

• Extremely low self abrasionThe measured wear rate is only15 ppm/h, much lower than the general grade (HD series about 90 ppm/h) and high-purity grade (SSA-995 about 300 ppm/h)

• Extend service lifeTaking a 10mm ball as an example, its lifespan can reach under continuous use8000 hoursIt is more than three times larger than ordinary alumina balls

3. High density and high strength

4. Excellent chemical stability

SSA-999W has excellent corrosion resistance to acids and alkalis, and its performance will not decrease in zirconia grinding or hot water environments. This characteristic makes it suitable for various wet grinding processes, including dispersion treatment of acidic or alkaline slurries.

3、 Selection of specifications, dimensions, and forms

SSA-999W offers a variety of specifications, covering the needs of precision grinding from micrometer level to conventional particle size grinding:

*Note: The diameter of 1-5mm is suitable for ultrafine grinding and dispersion, while the diameter of 10-25mm is suitable for conventional grinding and crushing.

Selection Suggestions：

• Ultra fine grinding (target particle size ≤ 1 μ m)It is recommended to use 0.5-3mm small balls in conjunction with high-energy sand mills

• Conventional grinding (target particle size 1-50 μ m)It is recommended to use 3-10mm balls or adopt a grading scheme for large and small balls

• Coarse crushing (target particle size ≥ 50 μ m)Suggest using a 15-25mm large ball

4、 Typical application areas

The high purity and hardness characteristics of SSA-999W make it particularly suitable for the following fields that are highly sensitive to impurity control:

1. New energy battery materials

• Nano scale grinding and dispersion of positive electrode materials for lithium batteries (such as lithium cobalt oxide, lithium iron phosphate, ternary materials)

• Ultra fine grinding of negative electrode materials (silicon carbon, graphite)

• Preparation of Solid Electrolyte Materials

2. Electronic component materials

• Grinding of dielectric materials for electronic ceramic substrates and multilayer ceramic capacitors (MLCC)

• Micro crushing of semiconductor packaging materials (epoxy plastic filling materials)

• Dispersion treatment of piezoelectric ceramics and ferrite materials

3. Rare earth and phosphor materials

• Ultra fine grinding of rare earth fluorescent powder (for LED)

• Dispersion treatment of luminescent materials and phosphors

4. Precision ceramics and new materials

• Fine grinding of high-purity alumina, zirconia and other ceramic raw materials

• Dispersion and modification of nanomaterials and functional powders

• Preparation of catalyst support

5、 Comparison with other series of products

For the convenience of selection decision-making, the SSA-999W will be compared systematically with other alumina ball series from NIKKATO

6、 Selection suggestions and usage maintenance

Key points of selection decision

1. Material purity requirementsIf the product is sensitive to metal impurities (especially Fe, Cu), SSA-999W is a suitable choice

2. Material hardnessFor hard materials with a Mohs hardness of 7 or higher, high hardness SSA-999W can provide better grinding efficiency

3. Target particle sizeIt is recommended to use SSA-999W and SSA-999S microspheres in combination for ultrafine grinding (sub micron level)

4. Cost benefit analysisAlthough SSA-999W has a higher unit price, its ultra long lifespan (8000 hours) and extremely low pollution characteristics actually result in lower overall usage costs in applications

Usage and maintenance suggestions

1. Pre run in treatmentIt is recommended to pre run in the material for 2-3 hours before using the new ball, which can further reduce trace pollution during initial use

2. Regular screeningIt is recommended to screen every 200 hours after operation to remove worn spheres smaller than 2mm and maintain grinding efficiency

3. Ball material ratio controlIt is recommended to control the ball to material ratio between 2:1 and 3:1 to achieve better grinding effect

4. Storage conditionsStore in a dry environment, avoid mixing with hard metal objects, and prevent surface scratches

7、 Summary

NIKKATO SSA-999W alumina ball99.9% ultra-high purityandTop hardness of 1800 HV10As the core competitiveness, cooperate withUltra low wear rate of 15 ppm/handLong lasting lifespan of 8000 hoursEstablished performance in the field of ultrafine grinding of high-purity materials. SSA-999W is an ideal grinding medium for applications that require strict impurity control, such as lithium battery cathode materials, MLCC dielectric ceramics, and rare earth phosphors, to ensure product purity and grinding efficiency.