Ceramic Powder Mixer, Doebritz Industrial Mixer, High-Shear Homogenization / ATEX Certified

Product Summary

Doebritz presents the next-generation Ceramic Powder Mixer, engineered for the most demanding high-purity and abrasive powder processing applications. This industrial mixer delivers exceptional homogenization consistency for powder, granular, and flake materials with a capacity range of 0.5 m³ to 50 m³ per batch. Certified to ATEX 2014/34/EU for explosive dust atmospheres (Zone 20/21), the Doebritz Ceramic Powder Mixer features a nano-ceramic lined contact surface that reduces metal contamination by up to 90% compared to standard stainless steel mixers. Ideal for lithium-ion battery materials, ceramic frits, toner, and pharmaceutical intermediates. Maximum operating pressure: 5 bar(g).

Why Source Doebritz Ceramic Powder Mixers

• Ultra-Low Contamination Design: Our proprietary ceramic coating technology and precision-aligned rotor-stator assembly achieve a wear rate of <0.001% per hour, ensuring product purity for high-value formulations.
• Superior Airtightness & Leakage Control: Advanced double mechanical shaft sealing with inert gas purge option guarantees minimal air leakage (<0.05 m³/h at 1 bar differential), preventing material oxidation and cross-contamination.
• Global OEM Supply Chain Integration: Doebritz supports heavy-duty continuous operation with CNC-machined, interchangeable parts. Spare parts availability guaranteed for 15+ years. Fully customizable inlet/outlet flanges (ANSI, DIN, JIS).
• Explosion-Proof & Safety-First Design: ATEX-certified motor, grounding system, and rupture disc port integrated as standard. Meets NFPA 69 and EN 1127-1 for dust explosion isolation.
• High-Temperature & Abrasion Resistance: The ceramic lining withstands continuous operating temperatures up to 350°C and pH 0-14, making it the definitive choice for fumed silica, alumina, and silicon carbide mixing.

Housing & Rotor Engineering

The Doebritz Ceramic Powder Mixer housing is manufactured from high-grade ductile cast iron (GGG 40.3) or 304/316L stainless steel as standard, with an internal layer of sintered ZTA (Zirconia Toughened Alumina) ceramic tile lining applied via a high-temperature vulcanization process. This eliminates metallic contact with abrasive powders. The rotor features a unique staggered multi-paddle design that creates both radial and axial flow zones, achieving a mixing uniformity coefficient (CV) of <5% within 3-5 minutes. Each rotor is dynamically balanced to ISO 1940 G2.5 grade and CNC-machined with a clearance tolerance of ±0.05mm to the ceramic liner, drastically reducing dead zones and material retention. The outboard bearing arrangement isolates the gearbox and bearings from the process zone, extending service life by 300% in severe duty cycles.

Technical Specifications

All Doebritz Ceramic Powder Mixers comply with ISO 9001:2015 manufacturing standards. Custom engineering available for non-standard process conditions. Typical data for Model D-CPM-20 shown below.

Specification	Detail
Body Material	Ductile Cast Iron GGG 40.3 / SS316L (Optional)
Lining Material	ZTA (Zirconia Toughened Alumina), 12mm thick
Rotor Design	Staggered Multi-Paddle, 8-blade, CNC balanced
Shaft Seal Type	Double mechanical seal + inert gas purge port
Drive Power Range	5.5 kW to 110 kW (IE3 or ATEX motor)
Batch Capacity	0.5 m³ to 50 m³
Max. Operating Temp.	350°C continuous (450°C short-term)
Max. Differential Pressure	5 bar(g)
ATEX Certification	II 1/2 D c T120°C (Zone 20/21)
Warranty	3 years (ceramic delamination), 12 months (full system)

Heavy-Duty Application Scenarios

Pneumatic Conveying Systems Integration

Seamlessly integrate the Doebritz Ceramic Powder Mixer as a batch homogenizer upstream of dense or dilute phase pneumatic conveying lines. The mixer’s pressure-tight design (up to 5 bar) allows direct feeding into blow tanks without intermediate rotary airlocks, reducing system footprint and maintenance points. Ideal for premixing cement additives, fly ash, and mineral powders before conveyance.

Silo Discharging & Blending

Mount the Doebritz unit directly beneath multiple storage silos for continuous in-line blending during discharge. The low-profile design (clearance from 650mm) fits existing retrofit projects. Achieve homogeneous blends from segregated silo materials with <2% variability, essential for premix feed production and glass batch plants.

Dust Filter Collector Service

Configure the Ceramic Powder Mixer as a high-intensity mixing station for recovered dust from baghouse or cartridge collectors. Reclaim and homogenize valuable powders (e.g., carbon black, metal powders, pharmaceutical APIs) back into the production stream, significantly reducing waste disposal costs. The mixer’s dust-tight design meets EPA fugitive emission standards.

Frequently Asked Questions

Q1: What is the typical lead time for a Doebritz Ceramic Powder Mixer?

A: Standard models (D-CPM-5 to D-CPM-30) have a lead time of 4-6 weeks. Custom-engineered units (special flanges,Explosion-proof motors, or exotic alloys) require 8-10 weeks. All units include a full FAT (Factory Acceptance Test) video report prior to shipment.

Q2: Do you support custom flange drilling or non-standard inlet/outlet connections?

A: Absolutely. As an OEM supplier, Doebritz provides any flange standard: ANSI B16.5 Class 150/300, DIN EN 1092-1, JIS B2220, or sanitary tri-clamp (CIP capable). Minimum order quantity for fully custom flanges is 2 units. Please provide your dimensional drawing for a rapid retrofit solution.

Q3: Is the mixer available with ATEX Zone 20 certification for conductive dusts?

A: Yes. All Doebritz Ceramic Powder Mixers are certified as standard for Zone 20/21 (Gas group IIC / Dust group IIIC). We provide a full ATEX compliance declaration document including motor certificate, earthing continuity test results, and maximum surface temperature data (T-class). An optional inert gas purging system for the seal chamber is available for <1 mbar leak rate requirement.

Q4: What high-temperature configuration options exist?

A: For applications up to 450°C (e.g., hot alumina or catalyst mixing), we offer a high-temp variant with a cooled intermediate shaft, high-temperature grade ceramic adhesive, and air-cooled bearing housings. For 650°C+ applications, a water-jacketed housing design is available. Please specify your continuous and peak temperatures.

Q5: How do you guarantee the ceramic lining will not delaminate under shock loads?

A: Our ceramic tiles are mechanically interlocked using a dovetail groove system cast directly into the housing base material, then back-filled with a high-temp epoxy grout. This eliminates any bond-line failure risk. We provide a 3-year warranty against delamination for applications with maximum lump size < 1/3 of the rotor diameter. Independent ASTM C704 abrasion test results are available upon request.