Chemical Engineering April 2020 - 60

Solids Processing 2020 Special Advertising Section
Fast, homogenous mixing
The Bella XN fluidized zone mixer from Dynamic Air is a twin-shaft design that uses a
" weightless " central fluidized area to provide thorough yet gentle mixing of dry products
The twin-shaft Bella mixer
T
he Bella fluidized-zone
twin-shaft paddle mixer
by Dynamic Air achieves fast,
high-capacity, low-shear, precision
mixing of either dry bulk
solids or liquids with solids.
Regardless of particle size,
shape or density, materials are
mixed with a fast, efficient, and
gentle action, with typical mixing
times of 15-30 s. A weightless
zone created by low-speed
counter-rotating paddles generates
low friction without shear.
This makes it ideal for abrasive
products and fragile products
that cannot tolerate rough handling.
Even flakes or spray-dried
bodies remain intact.
The Bella mixer consists
of twin drums which have two
counter-rotating agitators with
specifically angled paddles. The
paddles sweep the entire bottom
of both mixer drums and
yet allow the mixer to be started
under full load (Figure 1). The
material in the mixer moves
in a horizontal counter-clockwise
direction at the perimeter
Figure 1 (right, top): In
Zone A, fluidization promotes
thorough mixing. Figure 2
(right): Material interchange
between the two drums
ZONE A
ZONE B
while simultaneously moving
both left and right in the center
(Figure 2). The material in
Zone B (Figure 1) is in its normal
gravimetric state as it is
being moved and dispersed.
In Zone A, a weightless zone is
created which effectively lifts
the ingredients to an almost
weightless state, allowing them
to move freely and randomly,
regardless of particle size and
density. Thus the two zones'
interaction becomes highly efficient
as every particle moves
rapidly to create a highly homogeneous
mix, the key to the
Bella mixer mixing technology
for fast, precise mixing.
The Bella mixer is available
in stainless steel and mild steel
construction.
www.dynamicair.com/
products/mixers.html
Freeze Drying System Technology:
Best level of process-control and reproducibility for rapid, safe freeze drying of your
high-quality product
ith over 70 years of experience, Martin Christ is the leading
producer of, not only routine-process freeze dryers, but
also of a series of product-specific, highly specialized lyophilizers
from pilot to commercial production with far ending potential. Our
freeze drying systems are used all over the world for all advanced
applications. One of our key area of activity are pharmaceutical
applications
W
Customized Solutions Designed & Made in Germany
for commercial use
The construction of customized systems for sterile production of
pharmaceutical products can always be considered a top level core
competence of Martin Christ.
In this sector too, our name stands for utmost customer satisfaction
all over the world. We develop and manufacture to the highest
pharmaceutical standards to provide the best benefits for our
customers.
Due to the high value of these active pharmaceutical substances,
the requirements on the reliability and the technical implementation
are extremely stringent. Highly potent drugs require specific
solutions to prevent discharge, towards both the operator and the
environment. Aseptic production over the entire process chain demands
fully automatic loading and unloading, possibly in isolators,
as well as a sterilisable freeze dryer design.
60
LyoShuttle our very innovative new system for automatic loading
and unloading system offers a variety of advantages compared to
current industrial standards from robust in operation due to small
number of moving parts up to simple cleaning and disinfection of
the complete LyoShuttle system. It is very much designed for integration
in isolator environment.
www.martinchrist.de
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM
APRIL 2020

http://www.dynamicair.com/ http://www.martinchrist.de http://WWW.CHEMENGONLINE.COM

Chemical Engineering April 2020

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