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            [post_title] => Micron Xerbis Agitated Media Flash Dryer
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The Mikro® UMP Universal Milling System utilizes the same design and operating principles perfected in the original Mikro Pulverizer® Hammer & Screen Mill. The Mikro® UMP was developed to meet the increased market demand for high performance machines for multiple applications. An interchangeable grinding mechanism for flexible particle size distribution is a key feature to this machine’s design. Multiple feed and collection options further enhance the flexibility of the Mikro® UMP Universal Milling System across food, pharmaceutical and chemical applications.

The fabricated grinding chamber is constructed in 316 stainless steel with a high quality 0.6 micron Ra finish. Higher quality finishes are available for specialty applications. The access door is hinged to the grinding chamber and is secured with a tri-clamp connection for easy and quick inspection and cleaning. The bearing housing is a cantilevered design and includes maintenance free, sealed for life bearings. There are double lip seals and a gas purge between the drive and process areas to eliminate material contamination and premature wear to drive components.

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Tungsten carbide

Tungsten Carbide (WC) is a very hard compound that is synthesized from tungsten metal and a carbon source.  Its high hardness (it is a 9 on the Mohs Hardness Scale) makes it ideal for cutting and surgical tools, wear abrasion protection, traction enhancers, and jewelry.   In order to be formed into various shapes, the tungsten carbide is typically ground into a powder and then bound together with cobalt and/or nickel.

Hosokawa uses tungsten carbide in its milling and classification equipment as part of the wear protection options.  Hammers on the Mikro ACM® Air Classifying Mill  and on the Mikro Pulverizer® Hammer & Screen Mill  can be tipped with tungsten carbide plates for durable wear protection.  Hosokawa will also apply tungsten carbide coatings to classifier wheels and other parts, through a plasma coating process.

The Alpine AFG Fluidized Bed Opposed Jet Mil l is ideal for milling tungsten carbide into a fine powder.  In the milling chamber, opposed jets release compressed air into the chamber to form streams of gas at very high velocities (up to 500 m/s).  This air movement creates a fluidized bed and the particles impact into each other at the center of the chamber to break apart the brittle tungsten carbide particles.  Because the milling action is particle-to-particle impact (instead of particle-to-machine impact), the result is a high purity product with minimal wear to the equipment.  After milling, the air lifts the milled particles to an internal air classifier at controlled speed which removes the particles below the cut point (product) and sends the oversized particle back to the milling zone for additional milling.

Contact Hosokawa’s mineral applications department to learn more about Tungsten Carbide Milling.