LABORATORY GRINDING MILLS

Advantages Of Using A Laboratory Attritor ■■ Fast and efficient grinding ■■ Scale-up capability ■■ Numerous options ■■ No premixing ■■ Flexibility ■■ Easy operation ■■ Repeatability ■■ Low maintenance 2 Union Process Research And Laboratory Attritors Produce Fine And Homogeneous Dispersions Quickly And Repeatedly Under Scientific Conditions History From a revolutionary idea proposed and developed by Dr. Andrew Szegvari in 1945, Attritor technology grew to become the basis for Union Process, Inc., an independent, family-owned American company founded in Akron, Ohio. Today, Attritors are considered to be the most efficient grinding/dispersing systems and are used in scores of industries and research laboratories worldwide. How Attritors Work The Attritor is often referred to generically as a "stirred ball mill." The operation of an Attritor is simple and effective. The material to be ground is placed in a stationary tank with the grinding media. Carbon steel, stainless steel, chrome steel, tungsten carbide, and ceramic balls are commonly used media. The material and media are then agitated by a shaft with arms, rotating at high speed. This causes the media to exert both shearing and impact forces on the material. The final result of this remarkably efficient process is an extremely fine material, measured in microns or fractions of microns, distributed on a very narrow curve. The laboratory Attritor works up to ten times faster than the conventional ball, pebble or jar mill. Its compact, vertical profile requires minimal space. No premixing is necessary. Adding ingredients (or taking samples) can be done at any time during the grinding. Why A Laboratory Attritor? Union Process customers know from experience that the Attritor is one of the most versatile pieces of equipment in their lab. It can be equipped or retrofitted easily and inexpensively with a wide variety of components and accessories. With the Attritor, users can choose wet or dry grinding, introduce inert atmospheres, operate at controlled temperatures, vary grinding speed, overcome product contamination, change media size and type, and get precise energy consumption information, all on the same machine. Results are repeatable from one test grind to another for maximum credibility. Finally, the Attritor is ideal for formulating, quality control, and scale-up studies. On Cover: S1 Attritor equipped with Touch-Screen Controls with PLC for data acquisition and grind time settings. Also shown is the shaft seal for grinding under inert gases. © 2017, Union Process, Inc. All rights reserved. Common Applications ■■ Agricultural Flowables ■■ Bagasse ■■ Biofuel/Cellulosic Biomass ■■ Catalysts ■■ Ceramics ■■ Chemicals ■■ Chocolate, Confectionery ■■ Cosmetics ■■ Cryogenic Grinding ■■ DSM (Mechanical Alloying) ■■ Electronic Ceramics ■■ Ferrites ■■ Fibers ■■ Food Products ■■ Glass Frits ■■ Industrial Coatings ■■ Metal Oxides ■■ Metal Powders and Flaking ■■ Minerals, Coal ■■ Paints, toners, inks ■■ Paper Coatings ■■ Pharmaceuticals ■■ Pigments ■■ Proppants ■■ Reaction Milling/ Mechanochemical Milling ■■ Tungsten Carbides

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