Hammermills
High performance and future-oriented
With the MFH generation of hammer mills, Frewitt has developed a precision instrument for applications in the pharmaceutical, food, and fine chemical industries. The MFH line is especially suited for grinding and pulverizing hard, crystalline, or fibrous products. It is capable of outputs of less than 300 kg/h, up to as much as 5000 kg/h. The process: as the grist flows into the milling chamber, it contacts the hammer side of the rotor and is rendered into a fine-grained, finished product. An adjustable paddle wheel conveys the product into the milling chamber, thus assuring a controlled fill level and a dust-free milling process. The rotor can be turned to the hammer side for processing hard and crystalline products, or to the blade side for fibrous products. It is thus possible to achieve any grain size desired with any milling or cutting process.
Technical data
Technical data
Technical data
| Flowrate * | Voltage | Rotor speed | Power | Net weight |
HammerWitt-Lab | ˜ 300 kg/h | 3x400V - 50Hz | max. 7000 rpm/min | 4.0 kW | ˜ 200 kg |
Hammermill MFH-6 | ˜ 1500 kg/h | 3x400V - 50 HZ | max. 6000 rpm/min | 4.0 kW | ˜ 420 kg |
Hammermill MFH-15 | ˜ 5000 kg/h | 3x400V - 50 HZ | max. 4500 rpm/min | 7.5 - 15 kW | ˜ 470 kg |
* Flowrate is depending on product characteristics and particle size | |||||
Measures
Measures
| B | C | D | E | F | A-Infeed | A-Discharge |
HammerWitt-Lab | 486.7 | ∅ 193 | 708/768 | 1008 | 653 | DN 80 | DIN 125 |
MFH-6 | 840.5 | ∅ 270 | 880 | 948 | 760 | DN 150 | DN 200 |
MFH-15 | 1019 | ∅ 385 | 820 | 1090 | 825 | DN 150 | DN 250 |
Materials
Materials
Execution | Parts in contact with the product | Parts not in contact with the product |
Material | 1.4435 / 1.4404 (AISI-316L) | 1.4301 / 1.4305 (AISI-304) |
Seals | FDA compliant materials (EPDM/PTFE) | Various materials |
Surface | Funnel Ra ≤ 0.8 μm polished / head Ra ≤ 0.4 μm polished | 220 grit, polished |
Weld seams | ground and polished | Treated and brushed |
Rotor | MFH-6 rotor with 16 arms / MFH-15 rotor with 16 arms / HammerWitt-Lab rotor with 16 arms | |
Sieves | 0.18mm - 10.0mm | |
Distance Rotor/sieve | No mechanical contact (metal abraison) | |
Construction
Construction
An noteworthy feature of the Hammer Mill's construction is the rotor mounted from one side, enabling direct, gearless transmission of the power from the motor to the shaft. In contrast to systems mounted from both sides, not only are the rotor and sieve readily accessible by simply opening the front cover, minimal heat build-up is ensured. Additionally, the rotor of the hammer mill can be used applying either the hammer side blade side (cut side)or the hammer side. The rotor of the hammer mill can be turned employing the hammer side (hammer) to the cutting side (blade).
Process
Process
The hammer mill is ideal for sizing and pulverizing hard, crystalline, or fibrous products.
The sizing system functions via a rotor mounted on one side, which can be used with either the blade side or the hammer side, depending on the properties of the raw material and the result desired. The rotor is available in two versions, depending on the area of application: either a ground polished version (pharmaceutical industry) or a brush-finished version (applications other than pharmaceutical). The product inlet, which is in the form of a rotary paddle dosing device, is attached directly to the system with tri-Clamps.
Options
Options
- Custom-made inlet and outlet funnels
- Flanges
- Dosing device with paddle feeder
- Mobile stand
- Inlet and outlet funnels made to customer specifications
- Installation of in-line systems
- Through-the-wall installation (gray-white zone)
- ATEX T3, T4 zone 0/20 inside, zone 1/21 outside
- Cooling system for Hammer Mill.
Applications
Applications
The modular, compact, and user-friendly design of the MFH line guarantees optimum sizing results and excellent flow rates. Whenever hard, crystalline, or fibrous substances need to be processed into fine powders the MFH hammer mill from FREWITT is the tool of choice suitable for the pharmaceutical, food, and fine chemical industries. A precision instrument, it is ready for integration, either as a mobile, or an in-line component within any system configuration. For special applications, the pressure wave-proof MFH-6 hammer mill is the ideal sizing system in terms of optimum quality and safety.
Frewitt designed the HammerWitt-Lab especially for the research and development sector, as well as for small batch production requirments.
