Table roller mill AWM AND AWM-F
verticalultrafineair classifier

Table roller mill - AWM AND AWM-F - HOSOKAWA ALPINE - vertical / ultrafine / air classifier
Table roller mill - AWM AND AWM-F - HOSOKAWA ALPINE - vertical / ultrafine / air classifier
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Characteristics

Technology
table roller
Orientation
vertical
Other characteristics
ultrafine, air classifier
Rotational speed

Min.: 600 rpm
(3,770 rad.min-1)

Max.: 6,000 rpm
(37,699 rad.min-1)

Description

• Table roller mill for end-product fineness values of between approx. 20 µm and 100 µm • Preferred fineness range d97 = 50 µm • Grinding roller liners and grinding table made of special wearproof castings • Conical grinding rollers, hydraulic positioning mechanism • Turboplex ultrafine classifier integrated into top section of mill The AWM-F is the logical and consequent further development of the AWM table roller mill for a fineness range of d97 = 8 – 40 μm. The grinding zone, grinding technology and integrated air classifier were given a complete makeover, the energy efficiency was improved significantly, and the capacity was substantially increased, compared to the standard AWM. Principle of operation Table roller mills operate in accordance with the principle of pressure comminution, making them suitable for brittle but elastic feed products. The product is subjected to compressive stress between the grinding table and the grinding rollers. The specific grinding force (contact force divided by the cross-sectional area of the grinding roller) is in the range between approx. 0.5 and 1 N/mm², whereby the effective pressures in the material bed are naturally much higher. The grinding table is set into rotation by a motor and suitable gear unit, peripheral speeds of between 2 and 6 m/s are used. Because the gear unit has to absorb the forces of the grinding rollers, it is equipped with an axial friction bearing (segmented bearing). The product is fed to the centre of the grinding table where centrifugal force conveys it across the grinding table to the periphery. The grinding rollers roll over the product repeatedly during this time and crush it.

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