Features and benefits

• Product range from 1 to 80 microns.

• Range of sizes to handle from 1 Kg/Hr or less up to 2000 Kgs/Hr.

• Integral forced vortex classifier provides accurate control of product size with sharp cut-off.

• On-stream adjustment of product size by variable speed classifier rotor.

• Generation of superfines controlled by adjustment of jet velocity.

• Feed entry configuration allows pre-classification of product sized material prior to milling.

• Suitable for handling abrasive materials with minimum contamination.

• Ability to accept some feed stocks up to approx. 3 mm reduces necessity for pre- grinding.

• Low operating temperatures enable heat sensitive material to be processed.

• Manufactured in Mild steel or Stainless steel.

• Low operation noise levels.

• Easy access for clean-out and maintenance.

• Negative pressure operation within the milling chamber provides dust free operation.

• Constructed in Mild steel or Stainless steel with provision for special lining as required.

• Complete with automatic control system

Operating Principals

• Feed material is introduced into the primary air stream by a variable rate feeder.

• Entrained feed material enters through primary air duct (1).

• Particles are introduced into a forced vortex generated within the machine by rotor (2).

• Particles are classified within the vortex as a result of the interaction between centripetal and air drag forces.

•  Cut point is determined by control of rotor speed and air flow.

• Particles below cut sizes pass through the rotor and exit through duct (3) with the entraining air for collection in the cyclone and bag filter.

• Coarse particles above the cut point migrate to the casing wall (4) and descend through the discharge cone (5) to the outlet.

• Secondary rinsing air enters through a separate duct (6) in the classifier casing dispersing agglomerated fines giving improved product yield.

• Secondary air flow rate controls the residence time of particles within the separating zone and can be adjusted to give optimum classification conditions for widely differing materials.

• Fines and coarse fractions are collected in their respective containers.

• An integral induced draft fan provides conveying/classifying air for the entire system.

Pharmaceutical Design

The AJ100 Jet Mill System can be supplied as a GMP design.

This unit installed and commissioned within the GMP Suites at the Phoqus R&D facility in West Malling, Kent, the equipment is an integral part of the processing of formulated powder systems, that are used with the LeQtradose drug delivery systems created by Phoqus.

A total turnkey system was supplied by British Rema, which includes an Aerojet Microniser/Classifier Unit with associated equipment such as screw feeder, high efficiency cyclone, dust collector, suction fan, inter connecting ducting, dampers, collection bins, all incorporating tri-clover quick release fastening connections. British Rema also supplied all the necessary PLC control equipment, which provides manual or automatic operation of the system and links up to clients' computer systems.