Chemical Engineering April 2020 - 29

ing with bulk solids in the form of
powders or fines, pelletizing significantly
reduces, (and in some cases,
largely eliminates) dust. Because
pelletizing produces a rounded
granule,
Raw feed
Binder
Disc pelletizer
with liquid
spray system
the
potential
for jagged
edges to rub together and break
down is decreased. Product integrity
is therefore maintained, and material
losses are kept to a minimum.
Other issues associated with dust,
such as health and safety hazards,
are also eradicated.
Improved handling and application.
Powders and fine materials
can present various challenges during
handling and application. These
include difficulty in transportation,
increased product loss, inaccurate
and unpredictable application and
flowability issues. Pelletized materials
flow more readily, promote
cleaner handling, and are less likely
to become windblown on application
(Figure 1). Transportation qualities
are also improved, with reduced
costs in some cases.
Control of particle properties. PelSurge
hopper
Pin
mixer
Transfer conveyor
Rotary
dryer
Oversize
Oversize
mill
Vibrating
screen
Undersize
letizing is perhaps most widely used
as a means of particle engineering,
allowing granules to be produced
to exacting specifications. Various
material characteristics can be fineProduct
FIGURE
3. This simplified flow diagram
shows a typical disc-pelletizing setup
tuned to control active-ingredientrelease
properties or rate of reaction,
improve product uniformity, enhance
solubility, or even manage packing
density and handling characteristics.
SPX FLOW develops dedicated mixing, heat
transfer, pneumatic, and dehydration systems
for the pharmaceutical processing industry.
Leveraging over a century of experience, a
global network of research and development
centers, and a dedicated staff of knowledgable
application engineers, to develop highly
specialized pharmaceutical processes.
Visit SPX FLOW at Interphex, Booth #2836 and
International Powder & Bulk Solids, Booth #2230
For details visit adlinks.chemengonline.com/76989-33
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM
APRIL 2020
29

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Chemical Engineering April 2020

Table of Contents for the Digital Edition of Chemical Engineering April 2020

Contents
Chemical Engineering April 2020 - Cover1
Chemical Engineering April 2020 - Cover2
Chemical Engineering April 2020 - Contents
Chemical Engineering April 2020 - 2
Chemical Engineering April 2020 - 3
Chemical Engineering April 2020 - 4
Chemical Engineering April 2020 - 5
Chemical Engineering April 2020 - 6
Chemical Engineering April 2020 - 7
Chemical Engineering April 2020 - 8
Chemical Engineering April 2020 - 9
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Chemical Engineering April 2020 - 18
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Chemical Engineering April 2020 - Cover3
Chemical Engineering April 2020 - Cover4
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