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Bulk handling in the ceramics industry: complete guide

Q: How do you optimise milling parameters for diverse ceramic end products?

Particle size targets determine milling duration & energy. Fine powders (< 5 µm) require 12–15 hours; coarser powders (10–50 µm) 6–8 hours. Laser diffraction monitoring and adaptive milling algorithms optimise energy consumption per batch.

Q: What safety measures are required in ceramic transport processes?

ATEX Category 3 (some ceramic powders) requires spark detection, grounding < 10⁶ Ω, and moisture control for static prevention. Fine alumina particles can pose electrostatic risks; HECHT systems offer full safety integration.

Q: How do you manage contamination risks between different ceramic blends?

Closed systems, automatic cleaning purges (N₂ or compressed air) between batches, and colour-specific lining sets prevent cross-contamination. Regular inspection ensures > 99.5% purity.

Ceramics industry bulk handling complete guide — definition: Complete handling and process engineering for ceramic raw materials and finished products (alumina, silica, zirconia, feldspar), including transport, milling, mixing, dosing and storage under hygienic & explosion-safe conditions in accordance with ATEX 2014/34/EU and DIN EN 1740.

Key points

Ceramic raw materials 1000–2500 HV hardness; wear-resistant lining essential (hard metal/ceramic coating)
Milling efficiency: 6–15 hour cycle depending on final particle size (1–50 µm range)
HECHT product: CFE-K-EC integrates transport + milling + dosing in one system
Moisture content critical: < 0.5% storage for stable final quality; N₂ purging in silos
Cost optimisation: 38% total process cost savings via automation & smart dosing

Optimise your ceramic bulk processes at our Test & Trial Centre in Pörnbach. HECHT offers complete bulk handling solutions for ceramics & technical minerals.

FAQ — Ceramic bulk handling and process optimisation

How do you optimise milling parameters for diverse ceramic end products?

Particle size targets determine milling duration & energy. Fine powders (< 5 µm) require 12–15 hours; coarser powders (10–50 µm) 6–8 hours. Laser diffraction monitoring and adaptive milling algorithms optimise energy consumption per batch.

What safety measures are required in ceramic transport processes?

ATEX Category 3 (some ceramic powders) requires spark detection, grounding < 10⁶ Ω, and moisture control for static prevention. Fine alumina particles can pose electrostatic risks; HECHT systems offer full safety integration.

How do you manage contamination risks between different ceramic blends?

Closed systems, automatic cleaning purges (N₂ or compressed air) between batches, and colour-specific lining sets prevent cross-contamination. Regular inspection ensures > 99.5% purity.

What role does granule shape play in press compaction of ceramic powders?

Spray-dried ceramic granulates have a spherical, free-flowing structure that flows evenly through the die and produces a uniform green density. Irregularly shaped particles flow less well and can cause density variations in the compacted product, which leads to cracking or warping after sintering.

Author: Joost van Velzen, Managing Director Hecht Technology B.V. Verified: 02 07 2026.