Sanitary cone mill for sticky, moist and fragile materials


Intended for pharmaceutical, food and chemical applications in which contamination must be avoided, the mill provides consistent results within fine limits

A new Kason Kek-Gardner Model CM540 sanitary cone mill delivers gentle, low energy size reduction and homogenous particle distribution with minimal fines.

Suitable for delumping dried or hygroscopic materials that have agglomerated because of dampness or compaction, it can also be used for the intermediate sizing of ‘wet mass' product for improved drying and granulation prior to tableting, as well as regrinding out-of-spec tablets.

Its smooth, moderate action alleviates the traditional milling problems of product build-up, dust and heat generation, enabling it to process fatty, heat sensitive, sticky, moist or fragile products.

Material is fed by gravity or pneumatically into a central milling chamber in which a rotating impeller accelerates it centrifugally against and through apertures in a conical screen, and then into a receptacle below the milling chamber. Conical screens can be quickly changed and are offered with apertures from 150µm for fine/dry deagglomerationup to 25mm (including square and rectangular perforations for wet granulation).

Constructed of #304 or #316 stainless steel to sanitary standards, the mill can be cleaned wet or dry, and is available in CIP and SIP configurations. Bearings and seals can be air purged when required. Other options include top, bottom and remote drives, high containment and glove box designs, construction with special alloys and mobile versions.

Other models range in diameter from 75mm for laboratory applications to 680mm for production capacities of up to 25tonnes/h, depending on the application.

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The company also manufactures air classifier mills, universal mills, lump breakers, centrifugal sifters, round vibratory screeners, fluid bed dryers/coolers/moisturisers, static sieves,  ibbon/paddle/plough blenders, vertical mixers and double-cone/vee-cone blenders.