Alpine multi-process plant

The task of laboratories or development centers is mostly to produce small product samples for testing and to define an industrial manufacturing process. The laboratory systems used for this must be able to reproduce the process and scale up to a later production system. With a view to constantly developing new products whose grinding properties cannot be predicted, the greatest possible flexibility is required.

So-called multi-process systems have proven to be versatile talents for these tasks. After a few minutes of conversion time, the following components can be replaced here:

• fluid bed opposed jet mill
• fine classifier
• classifier mill
• spiral jet mill
• fine impact mill

4 procedural processes: 

• Counter jet milling with a  100 AFG for materials up to Mohs hardness 10 and fineness from 2 µm to 40 µm
• Impact grinding with a  50 ZPS for materials up to a Mohs hardness of 3.5 and finenesses in the range from 8 µm to 120 µm
• Fine classification with a  50 ATP , separation range from 2 µm to 120 µm
• Extremely fine shredding with a  100 AS in the finest range from 5 µm to 30 µm

With this concept, the installation frame, the product dosing device, the fittings for storage rinsing and grinding air, the drive, the product separation filter, the fan as well as the electrics and the control are used together. The latest development from Hosokawa Alpine is the addition of the fine impact mill to the multi-process system, which can be equipped with the well-known variety of grinding tools (pin discs, plate beaters, grinding tracks, screen baskets, etc.).

A newly developed drive, controlled via a frequency converter with parameter set switching, allows the attachment of both the grinding rotor of the fine impact mill and the blade classifier wheel, despite the significantly different design, power and speed.