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Product Category 07 · Grinding Media

Ceramic grinding media,
Si₃N₄ and ZrO₂.

High-density ceramic grinding balls and beads for wet and dry milling of battery cathode materials, pigments, coatings, and mineral slurries. Zero metal contamination — critical for battery and electronics applications.

2
Media Types
0.4–100mm
Bead Size
Zero
Metal Contamination
Battery-Grade
Purity
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Certifications & Standards
ISO 9001IATF 16949CERoHS · REACHUL Recognized
01 · Grinding Media Types

Two ceramic media, matched to your mill.

Si₃N₄ for the hardest materials and highest purity; ZrO₂ for general-purpose high-energy milling of battery and pigment slurries.

★ Highest Performance
Si₃N₄ Grinding Balls
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Silicon nitride grinding balls for hard mineral milling and ultra-high-purity applications. Hardness 78 HRC — outlasts zirconia media 3–5× in abrasive slurries.

Ø 0.4–100mm78 HRCZero contaminationHigh-purity
ZrO₂ Grinding Balls
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Zirconia grinding balls for battery cathode/anode slurry milling, pigment dispersion, and mineral processing. High density (6.0 g/cm³) delivers excellent milling energy.

Ø 0.4–50.8mm6.0 g/cm³Battery-gradeCoatings/mining
02 · Why Ceramic Grinding Media

Why ceramic media replaces steel.

Metal contamination ruins battery electrode performance. Ceramic media eliminates the risk.

Zero iron contamination

Steel media contaminate battery slurries with Fe ions that degrade cathode performance. Ceramic media contributes zero metal ions.

Longer media life

Si₃N₄ outlasts alumina 3–5× and steel 10–20× in hard abrasive slurries — lower total cost of ownership.

Higher milling energy (ZrO₂)

ZrO₂ density 6.0 g/cm³ vs alumina 3.9 g/cm³ — more impact energy per ball, reducing milling time.

Consistent particle size distribution

Uniform sphericity and low size variance give reproducible D50 — critical for battery electrode control.

Battery, coatings, mining applications

LFP/NMC cathode slurry, lithium carbonate, pigment dispersions, TiO₂, and mineral concentrates.

Stock in all standard sizes

0.4mm to 100mm across both materials. Stock sizes dispatch within 48 hours.

04 · FAQ

The questions we get most.

Which media for battery cathode?
ZrO₂ standard for NMC/LFP slurry. Si₃N₄ for ultra-high-purity or very hard feed materials.
What bead size?
Typically 10× the feed D90. For D50 < 1µm, use beads ≤0.5mm. Send feed size and target — we'll recommend.
Lead time?
Common sizes in stock: 48h. Non-stock: 2–4 weeks. Sample 1kg: no MOQ.
Media load calculation?
Standard fill 50–60% of mill volume. ZrO₂ (6.0 g/cm³) loads heavier than alumina — we'll advise on your mill.
Documentation?
Material cert with every shipment. XRF purity analysis available. Trace metal content cert for battery manufacturer qualification.
Wear rate vs alumina?
ZrO₂ wear rate typically 3–5× lower than alumina. Si₃N₄: 5–10× lower. Less contamination, longer intervals.
★ Engineering Case · Italian Pellet Stove OEM

180,000 units/year, −38% warranty returns, 7-year partnership.

One of our longest-running OEM partners — switched from a European competitor's alumina igniters to our BLK series Si₃N₄ in 2018. Warranty returns dropped 38% in the first 12 months; cold-start failures (sub-zero installs) dropped 32%. Now in year 7 of supply.

Switch Outcome · Year 1
Al₂O₃ → Si₃N₄ outcome
  • −38% Warranty returns vs prior
  • −32% Cold-start failures
  • +22% Avg igniter service life
  • 180K/yr Current production volume