Cone Mill Machine, Doebritz Industrial Milling, Sanitary Design / ATEX Explosion-Proof

Product Summary

The Doebritz Cone Mill Machine delivers high-capacity deagglomeration and precise particle size reduction from 1 mm to 10 mm for dry and wet bulk solids. Engineered for continuous operation with throughputs up to 15,000 kg/hr, this mill features a sanitary 316L stainless steel housing, ATEX certified explosion-proof drive system, and a low-dust milling principle that ensures minimal product loss. Ideal for powders, granules, and friable materials.

Why Source Doebritz Cone Mill Technology

• CNC Machined Rotor & Screen: Interchangeable rotor blades (impact, blade, or paddle) paired with laser-cut conical screens achieve repeatable PSD with zero metal-to-metal contact.
• Decades of Uptime: Heavy-duty outboard bearings with labyrinth seals prevent product contamination and allow tool-free screen changes in under 2 minutes.
• Global Compliance Ready: Full cGMP, GAMP, and ATEX Zone 1/21 documentation – all Doebritz mills include FAT/SAT protocols for regulated industries.
• OEM Supply Chain Advantage: Backed by ISO 9001:2025 and a 24-month warranty, Doebritz offers custom flange drilling, CIP/SIP compatibility, and quick-ship spare parts programs.

Housing & Rotor Engineering

The Doebritz Cone Mill Machine features a fully polished, crevice-free housing (Ra ≤ 0.4 µm) manufactured from investment-cast 316L stainless steel. The rotor assembly is dynamically balanced to G 2.5 and driven by a heavy-duty gear motor (0.75 kW – 15 kW) with integrated overload protection. Three rotor designs are available: impact bars for friable materials, blades for wet granulates, and paddle for gentle deagglomeration. The conical screen, available in 0.5 mm to 10 mm round or square holes, maintains a clearance as tight as 0.2 mm for maximum shear efficiency without heat build-up.

Technical Specifications

Below are the standard configurations for Doebritz Cone Mill Machines. Custom sizes, ATEX Zone 0/20 designs, and FDA-compliant elastomers are available per RFQ. All values verified under factory load conditions.

Specification	Detail
Model Range	Doebritz CM-5 / CM-12 / CM-25 / CM-50
Body Material	316L Stainless Steel (investment cast, Ra<0.4µm)
Rotor Design	Impact bar / Blade / Paddle (interchangeable)
Screen Hole Diameter	0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, 3.0 mm, 5.0 mm, 10 mm
Max Throughput	5,000 kg/h (CM-25) to 15,000 kg/h (CM-50)
Motor Power	0.75 kW – 15 kW, gear motor with VFD
Explosion Protection	ATEX II 1/2 D c T130°C (Zone 20/21) or II 2/2 G c T4 (Zone 1)
Seals / Gaskets	FDA silicone / EPDM / FKM (CIP/SIP capable up to 150°C)
Floor Space (LxWxH)	850 x 600 x 1150 mm (CM-25) to 1450 x 950 x 1580 mm (CM-50)

Heavy-Duty Application Scenarios

Pharmaceutical Granulation & Milling

Doebritz Cone Mills integrate seamlessly into wet granulation lines for deagglomerating screened wet mass, and dry milling of compacts or roller compacted ribbons. CIP/SIP capable models reduce changeover time between API batches.

Chemical & Fine Powder Processing

ATEX-certified Doebritz mills safely process pyrophoric, explosive, or abrasive chemicals (e.g., pigments, battery materials, agrochemicals). Inert gas purging and nitrogen blanketing options are standard corollary features.

Food & Nutraceutical Sizing

Sanitary design with quick disassembly handles sugar, spices, protein powders, and frozen blocks of fruit/vegetables. The low-dust operation meets EHEDG guidelines for open plant environments.

Frequently Asked Questions

What is the typical particle size distribution (PSD) from a Doebritz Cone Mill Machine?

Depending on rotor speed (500-3000 rpm), screen perforation, and feed rate, the D90 typically ranges from 150 microns to 5 mm. For precise control, the variable frequency drive (VFD) allows step-less tuning during production.

Do you support custom flange drilling and inlet/outlet orientations?

Yes – all Doebritz Cone Mill Machines are built to order with customized sanitary tri-clamp, DIN, or ANSI flange connections. We provide certified engineering drawings prior to manufacturing for your piping or hopper integration.

What is the lead time for an ATEX-certified mill with CIP capability?

Standard configurations with ATEX Zone 1/21 and CIP/SIP readiness ship in 8-10 weeks (EXW). Express 4-week delivery is available for non-certified sanitary mills from our European and US rapid-assembly hubs.

Can this mill handle heat-sensitive or sticky materials?

Absolutely. The optional chilled water jacket on the conical housing maintains product temperature below 30°C. For sticky materials (e.g., resins, waxes), we recommend the paddle rotor with Teflon-coated screens.

What documentation do you provide for FDA or regulatory audits?

Each Doebritz mill includes a complete IQ/OQ/PQ validation package, material certificates (3.1 EN 10204), surface finish logs, and weld maps. FAT witness testing is encouraged at our factory.