Advantages Of Using A Laboratory Attritor
Fast and efficient grinding
Union Process Research
And Laboratory Attritors
Produce Fine And Homogeneous
Dispersions Quickly And
Repeatedly Under Scientific
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.
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.
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