The MF-6 Sieve Mill
Brief Overview
- With it’s output ranging from 600 kg/h to maximum 1000 kg/h, the MF-6 is by far the most popular, oscillating mill on the international market. It’s moderate installation dimensions and user-friendly, procedural advantages are it’s distinguishing features.
- The MF-6 sizes the powder by grinding it between the sieve and the rotor. The product is hardly heated at all during the milling process, which is the main reason why many of our customers prefer the MF Series for heat-sensitive products. The gentle operation mode results in a narrow grain size spectrum, earning this type of mill the name of "sizer“ or "calibrator." The technology of the MF-6 is the industrial standard for products in which the percentage of fine particles (particles ≤ 200 μm) in the finished product must be kept at a low level.
- The MF-6 can be used for particle sizes ranging from 5 cm to as small as 250 μm. Due to it’s new engineering design respecting both GMP and FDA guidelines; the housing can be spotlessly cleaned in-line or manually.
Technical data
Technical data
Technical data
| Flowrate* | Voltage | Rotor speed | Power | Net weight |
MF-Lab | ˜ 100 kg/h | 3 x 400 V - 50 Hz | 50 - 400 osc./min | 0.375 kW | ˜ 100 kg |
MF-3 | ˜ 500 kg/h | 3 x 400 V - 50 Hz | 43 - 248 osc./min | 0.55 kW | ˜ 160 kg |
MF-6 | ˜ 1000 kg/h | 3 x 400 V - 50 Hz | 43 - 248 osc./min | 1.1 kW | ˜ 170 kg |
MF-8 | ˜ 2000 kg/h | 3 x 400 V - 50 Hz | 27 - 155 osc./min | 2.2 kW | ˜ 220 kg |
* Flowrate is depending on product characteristics and particle size | |||||
Measures
Measures
| B | C | D | E | F | A - Infeed | A - Discharge |
MF-Lab | 407 | 78 | 289.5 | 841 | 447 | ∅ 170 | DN 80 |
MF-3 | 635 | 122 | 820 | 878 | 946 | 246 x 310 | DN 200 |
MF-6 | 711 | 122 | 740 | 1125 | 946 | 492 x 310 | DN 250 |
MF-8 | 800 | 220 | 770 | 1210 | 1049 | 492 x 410 | 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 plastics (EPDM / PTFE) | Various plastics |
Surface | Funnel Ra &le, 0.8 μ polished / haed Ra ≤ 0.4 μ polished | 220 grit, polished |
Weld seams | ground and polished | pickled and brushed |
Sieve / rasp | Dry sizing: round or square wire, perforated plate/rasp | |
Distance rotor / sieve | 1/2 the machine width/maximum 1 mm (with /without rigid screen support | |
Rotor speed | Stepless, manually adjustable via mechnaical handwheel | |
Constructions
Constructions
The modular, compact, and intelligent construction of the mill offers numerous advantages to the operator.
- Readily abailable access to the milling chamber, due to the large
pivoting front door.
- The sizing tools, i.e., rotor, sieve, screen-support, are easy to
change in just a few steps.
- The drive motor is protected by a hood.
- The inlet and outlet funnels are easily detachable via four eye bolts.
- A Profi-Bant can be attached to the outlet funnel for dust-free filling.
Process
Process
The oscillating and rotating sieve mill guarantees optimum sizing results plus excellent flow rates. The oscillating rotor movement, ensuring constant, uniform speed and force effect gentle sizing of the product. The advantage of this process resides in an exceptionally low fine particle fraction in the end product, as well as being capable of processing heat sensitive products.
Sieving "Know how"
Sieving "Know how"
The sieve, a key factor in sizing
In addition to the proper adjustment of the mill, selecting the right size and appropriate sieve geometry are a key factors for optimum sizing results.
Square mesh sieve for fragmentation and dry sizing:
- The material is fragmented on the edge of the square mesh
wire and not finely ground, as is the case with a round mesh
sieve.
The advantage therein is a 20% improvement in performance.
Round mesh sieve for wet sizing:
- To produce a granular product, it is necessary to cut through wet
mass. These sieves consequently have a very fine wire relative
to the mesh size.
Conclusion: the thinner the cut, the less effort required.
The rotor plays a very important role in sizing. For this reason it is necessary to prevent wear, as this reduces the efficiency of the mill by:
- poorer performance
- discrepancy in granulometry
- greater fine particle fraction
Obviously, another important factor is the adjustment of the space between the rotor and sieve via the rigid screen support or the sieve tensioner.
Options
Options
- Inlet and outlet funnel according to customer specifications
- Flanges
- Bearings purge
- IQ/OQ protocol backup
- WIP cleaning nozzles
- ATEX design
Applications
Applications
The oscillating sieve mill is ideal for use in industrial processes in addition to being ideal for processing small amounts of product in laboratories. Enabled by it's modular concept and it's versatile sizing system provided by the oscillating or rotary rotor movement, the sieve mill can be employed everywhere, particularly for heat sensitive or difficult-to-process products. Wherever fine particle fractions, narrow grain size range, and low heat stress are important; the oscillating sieve mill is the answer.
- Morga AG processed soy malt products
- Du Pont Performance processed Herberts powdercryl
products
- Comadun processed ceramics products
