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DRY GRINDING
IN THE MICRON RANGE The ESCO Jet Mill grinds dry
materials to a fineness in the range of Typical fields of
application are the fine grinding of pharmaceutical active ingredients
such as antibiotics, sulfonamides, salicylic acid, pesticides, mineral
flour such as betonite, talc;
semi-conductors such as silicium and germanium as well as graphite,
molybdenum etc. Its special processing methode makes the machine
particularly suitable for grinding under sterile conditions. This is how
ESCO's JMRS works: The product to be
ground (1) and the air or inert gases (2) are blown into the grinding
chamber under pressure through specially designed jets (3). In this way a
unique flow pattern is created, causing product particles to collide with
each other and hit against the wall of the grinding chamber with great
impact. As a result, the desired grinding effect is achieved. The
separation of the created fine particles from the air or inert gases, is carried out by a
special filter (5). The obtainable degree
of fineness depends,among other factors, on the shape and position of the
various available jets and the size of the grinding gap. The lid of the
grinding chamber and the upper edge of the guide pipe (6) form the
grinding gap, which is adjustable while the unit in operation. Grinding sterile products under sterile
conditions. The ESCO Jet Mill JMRS is particulary well
suited for the grinding of antibiotics, sulfonamides and other
pharmaceutical products,which have to be processed under sterile
conditions. The mill has no motors, no rotating drive shafts and,
therefore, no seals or ball bearings. The product feed of
the JMRS An important factor in
obtaining high fineness and even particle distribution, is a proper and
constant product feed. Depending on the project at hand, ESCO can supply you with
vibratory feeders and
proportioning screws. Power supply to the
JMRS Compressors of
different types are used as a power source. The choice depends on how free
the product must be of oil, moisture and dust. The selection of the air
filter is based on the same
considerations. Of course, standard pressure gas cylinders can be used
such as nitrogen or inert gases for materials sensitive to oxidation. Type JMRS 80 SQ This type is
exactly the same design of the prooft JMRS 80 but with the advantage of
grinding small quantitys.If you want to grind 5 gramms with loosing only
15 % of the product it is the right solution.Cleaning and handling is very
easy because of the construction with a absolute minimum of parts. Product-contact parts
are in stainless steel 1.4401 (V4A, AISI 316) or, for materials sensitives
to metal, in ceramic ( cemented aluminium oxide).
Filter bags are in nylon or sterilizable material (polyacrylnitril or polyester). The outlet
connection is made to the requirement of the customer.
Tri-Clamp, DIN 11851 or thread suiting any glasses. Download Additional Information > Brochure Jet Mill Pictures
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