Air-jet micronizing system ProMill series

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Overview
The ProMill series are fluid jet mills designed for continuous production and high-throughput micronizing, starting from small pilot quantities up to large production batches. They feature low process gas consumption, rapid product changeover and are optimized for efficient particle size reduction in industrial processes.

Design and compliance
All product-contact connections are designed for cGMP compliance to facilitate assembly, disassembly, cleaning and validation. Component count is minimized to speed handling and maintenance. ProMill mills can be integrated into isolators for processing sterile, toxic or radioactive materials. Standard options include volumetric or gravimetric feeders, cloth bag separation filters, manual control panel and CFR21 Part11 compliant data recording. ATEX configurations and special materials (PTFE or ceramic inserts/coatings, Hastelloy) are available on request.

Available models

• ProMill-8: Production-scale unit, milling chamber 8 inch — micronizing from 500 g up to 80 kg/h.
• ProMill-12: Production-scale unit, milling chamber 12 inch — up to 200 kg/h.
• ProMill-16: Production-scale unit, milling chamber 16 inch — typical batch sizes 20 kg to 5 000 kg; up to 400 kg/h.
• ProMill-20: Largest milling chamber in the series (20 inch) — highest throughput, up to 800 kg/h.

Technical data

• Dimensions: 8", 12", 16", 20" milling chambers (models ProMill-8 / -12 / -16 / -20)
• Material: AISI316L standard; optional PTFE or ceramic inserts and special coatings; Hastelloy on request
• Gaskets: PTFE - FEP / Viton - silicone
• Surface roughness: < 0.25 μm (contact parts); < 0.80 μm (non-contact parts)
• Batch size (min–max): ProMill-8: 1–1 000 kg; ProMill-12: 5–2 500 kg; ProMill-16: 10–5 000 kg; ProMill-20: 30–10 000 kg
• Productivity (min–max): ProMill-8: 0.2–80 kg/h; ProMill-12: 1–200 kg/h; ProMill-16: 3–400 kg/h; ProMill-20: 10–800 kg/h
• Gas consumption @ 7 barg: 119 / 249 / 444 / 725 Nm3/h (ProMill-8 / -12 / -16 / -20)
• Gas consumption @ 12 barg: 205 / 427 / 761 / 1240 Nm3/h
• Gas consumption @ 100 psig: 74 / 155 / 277 / 452 SCFM
• Gas consumption @ 175 psig: 128 / 266 / 474 / 773 SCFM
• Typical yield: 99.5% depending on batch size
• Working pressure: 2–12 barg

Technical specifications

• Series: ProMill series
• Suitable batch sizes: from 1 kg up to 10 000 kg depending on model
• Productivity range: 0.2 kg/h up to 800 kg/h depending on model
• Materials: AISI316L standard; optional PTFE or ceramic inserts and coatings; Hastelloy available on request
• Surface roughness: < 0.25 μm (contact parts); < 0.80 μm (non-contact parts)
• Gaskets: PTFE - FEP / Viton - silicone
• Feed options: volumetric or gravimetric feeder
• Separation: cloth bag separation filter
• Controls & data: manual control panel and data recorder compliant with CFR21 Part11
• Gas consumption examples: from 119 Nm3/h (@7 barg) for ProMill-8 up to 1240 Nm3/h (@12 barg) for ProMill-20
• Typical yield: 99.5% depending on batch size
• Working pressure: 2–12 barg
• Certifications / configurations: ATEX available; cGMP-oriented design for ease of validation