Grinding and milling equipment
Size reduction is one of the oldest processes known to man – ever
since grains have been ground to make flour. Size reduction machines
still mill harvested materials but also a vast variety of other food,
chemical, pharmaceutical and mined materials too. Each industry has its
own requirements and every product presents its own challenges – for
which SHAPA members have the solutions.
Most size reduction is a mechanical process. For example, to grind minerals, the mined products are tumbled amidst heavy balls or long heavy rods which have a crushing action – hence the existence of Ball Mills and Rod Mills. Hammer Mills, literally metal hammers whirled round at high speed, are another method of pulverising minerals or metallic compounds.
The fine grinding of Food, Chemicals and some Pharmaceuticals usually takes place within Pin and Disc or Turbine Mills. These mills can reduce materials down to the fineness of flour or icing sugar and are the general workhorse of the Food, Chemicals and some Pharmaceuticals industries. Sieves, sifters and classifiers are often used in conjunction with these types of mill to screen out any oversize material so that it can be discarded or returned to the mill for further processing.
For the finest grinding of materials to sub-micron sizes, Jet Milling is the more appropriate. In a Jet Mill, material is circulated around a circular or oval chamber at very high velocity under the influence of a compressed gas or steam. Size reduction is achieved purely through the attrition of one particle against another or the impact of particles against the wall of the milling chamber. The outlet of Jet Mills can be adjusted so that material can only exit once it has been reduced to the required size. Otherwise, it remains in the mill until it has!
Some materials require special treatment: the volatile oils which give spices their desirable potency can be driven off through the temperature increase that occurs during any grinding process. To combat this, cooling of the mill is essential - frequently using a cooled airflow through the mill. Cooling down to cryogenic temperatures using liquid nitrogen makes the grinding of rubber, possible. The use of a nitrogen blanket can prevent the deterioration of aromatic products through oxidisation during milling.
Size reduction is a key process in many production lines.
Ensuring you have the optimum mill for your materials is a job for the experts and you’ll find none better than those among the SHAPA membership.
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10th Anniversary Digital Marketing Workshop
Details of the 10th annual digital marketing workshop have been
download the flyer for the event here and a
booking form to make sure you do not miss out on this vital workshop
which will give you the tools to improve your digital marketing profile
Health of the Nation
The need for solid health and safety systems procedures and practices
is more important than ever as we move out of the European and customs
union into World Trade Organisation rules for the global market read
Many companies are founded on the back of an innovative idea by forward
thinking people skilled in design, engineering, project management,
marketing or other discipline. Whilst still small, the skills required
to operate all aspects may possibly be gained by the founder. In former,
less complicated times this may have been true as the firm expanded, but
the pace of change of technology, standards and legislation as well as
in marketing and particularly in financial accounting necessitates
constant learning and improvement. The huge range of applications and
processes served by our industry just adds to this challenge.....
Reaching the end of a very busy Christmas term, we have lots to look
back on, such as assisting backstage with the school play and Christmas
concert, as well as designing and manufacturing the F1 in Schools
SHAPA January Meeting
The next General meeting will be held on the 24th January at the George Hotel in
Lichfield starting at 10:00
Find out about OEE and GDPR, along with all the usual networking
for more details email Ian at
email@example.com and download the
Applications are invited for the 2018 Solids
Handling Industry awards
Shapa has launched the 2018 Solids Handling Industry awards, these awards are
now open to all UK registered member and non member companies and
institutions operating in the Solids Handling and Processing Industry.
Application forms will be available direct from the website from
01/12/2017 and winners will
be announced and presented at the awards ceremony in the evening of 17th
April 2018 more information is available in the
2018 Solids Handling Industry Awards
Details of the award catagories and award launch date have been
announced, for further information follow the
Solids Dortmund 2018
Details have been released regarding the international Solids
Handling show to be held in Dortmund on the 7th and 8th November 2018,
for more information please follow the
**Abstracts deadline extended to 22-12-17 ** for more information
Financial Awarness Training
This course has been especially designed for Shapa
members and will include content specifically related to our industry
Who should attend ?
Anyone involved in driving
their business forward e.g Managing Directors, Directors/Managers &
Account Managers etc , whatever their level of financial knowledge. The
workshop is designed to enable everyone to take away practical tips and
strategic insight suitable to their skills and experience, whether you
are a beginner, intermediate or advanced. So join us for and inspiring
and enjoyable day out.
Download the detailed
information and a
If you can return these back to
firstname.lastname@example.org as soon
as possible so I can make the necessary arrangements and if you feel
that this course would help with someone in your close supply chain
please feel free to include them.