Siebtechnik SBM200 Disc Mill
| Brand | Siebtechnik |
|---|---|
| Origin | Germany |
| Model | SBM200 |
| Grinding Mode | Batch or Continuous |
| Max. Feed Size | 20 mm |
| Final Particle Size | <100 µm |
| Adjustable Disc Gap | 0.1–5.5 mm |
| Throughput | 5–150 kg/h |
| Motor Power | 1500 W |
| Disc Materials | Hardened Steel / Tungsten Carbide / Zirconia Oxide |
| Compliance | CE |
| Safety Features | Interlocked Safety Lock, Tool-Free Access, Vacuum-Cleanable Cavity |
| Dust Control | Fully Enclosed System with Integrated Vacuum Dust Extraction |
Overview
The Siebtechnik SBM200 Disc Mill is a high-precision, dual-mode (batch and continuous) laboratory and pilot-scale disc grinding system engineered for reproducible, dust-free size reduction of hard and brittle materials. Operating on the principle of shear and compressive attrition between two counter-rotating, parallel grinding discs — one stationary and one driven — the SBM200 delivers controlled particle size distribution through precise mechanical adjustment of the disc gap (0.1–5.5 mm). Designed for materials with Mohs hardness up to 8 — including ores, coal, coke, slag, ceramics, fused quartz, silica sand, and mineral soils — it bridges the functional gap between coarse crushers and ultrafine jet mills, offering consistent sub-100 µm output without thermal degradation or contamination from excessive energy input.
Key Features
- Tool-free, fully accessible grinding chamber with interlocked safety lock — compliant with EN ISO 13857 and EN 60204-1 for operator protection during maintenance and cleaning.
- Three disc material options: hardened tool steel (standard), tungsten carbide (for abrasive feedstocks), and yttria-stabilized zirconia oxide (for contamination-sensitive applications such as geochemical or pharmaceutical reference material preparation).
- Motor-driven disc gap adjustment with digital scale and fine-threaded micrometer mechanism, enabling repeatable fineness control across batches.
- Integrated vacuum port compatible with industrial HEPA-filtered dust extraction systems — ensures full enclosure and OEL-compliant operation per EU Directive 2004/37/EC (CARCINOGENS AND MUTAGENS Directive).
- CE-marked 1500 W motor with thermal overload protection, variable-speed drive (optional), and IP54-rated enclosure for lab and light industrial environments.
- Vertical, space-efficient footprint — no external workbench required; sample collection bottle mounts directly beneath discharge chute for hygienic, spill-free transfer.
- One-touch start/stop interface with status LED indicators; all electrical components meet RoHS and WEEE directives.
Sample Compatibility & Compliance
The SBM200 accommodates feed particles up to 20 mm in maximum dimension and reliably reduces them to a D90 ≤ 100 µm under standard operating conditions. Its robust disc geometry and adjustable clearance make it suitable for both friable and highly resistant feedstocks, including metallurgical slags, refractory ceramics, and siliceous geological samples. The system conforms to ISO 13320:2020 (laser diffraction particle sizing methodology support), ASTM C136/C702 (aggregate and slag fineness testing), and supports GLP-compliant documentation when paired with validated SOPs. All wetted parts are traceable via material certification (EN 10204 3.1), and surface finish complies with ISO 8502-3 for residual dust assessment post-cleaning.
Software & Data Management
While the base SBM200 operates via standalone hardware controls, optional integration with Siebtechnik’s LabControl Suite enables time-stamped operational logging (disc speed, runtime, gap setting, ambient temperature), batch ID assignment, and export of CSV-formatted process records. Audit trails comply with FDA 21 CFR Part 11 requirements when deployed with electronic signature modules and role-based user access. Data synchronization supports LIMS interoperability via OPC UA protocol, facilitating traceability from raw sample intake to final particle size report.
Applications
- Geochemical laboratories preparing homogenized rock powders for XRF, ICP-MS, and fusion bead analysis.
- Coal preparation labs meeting ASTM D2013 and ISO 13909 standards for grindability and ash content determination.
- Ceramic R&D facilities producing uniform green-body feedstocks for tape casting or slip casting.
- Environmental testing labs processing contaminated soils for TCLP or SPLP leaching protocols requiring defined particle size fractions.
- Materials science departments evaluating comminution energy efficiency (Bond Work Index estimation) across mineralogically diverse feedstocks.
- Quality control units in refractory manufacturing performing routine fineness verification prior to batching.
FAQ
What is the recommended maintenance interval for the grinding discs?
Disc wear inspection is advised every 200 operational hours or after processing 5 tonnes of abrasive material (e.g., quartzite); replacement frequency depends on feed hardness and throughput profile.
Can the SBM200 be integrated into an automated sample preparation line?
Yes — optional pneumatic feed hoppers, vibratory feeders, and PLC-compatible I/O terminals allow seamless integration with upstream crushers and downstream sieving or classification systems.
Is validation documentation available for GMP environments?
Factory-issued IQ/OQ protocols, along with material traceability dossiers and calibration certificates for gap-setting mechanisms, are provided upon request for regulated facility deployment.
Does the system support nitrogen purging for oxygen-sensitive samples?
The sealed cavity design permits optional inert gas inlet/outlet ports (N₂ or Ar) with pressure monitoring — configured per customer specification at time of order.
How is cross-contamination minimized between dissimilar samples?
Vacuum-assisted cavity cleaning removes >99.8% of residual particulate; optional ultrasonic bath compatibility for removable disc assemblies further ensures analytical-grade cleanliness between high-risk sequences.
