Magnetic barrage and separation
Slotted separators
Flat magnetic screens
Separators for inclined product pipelines
Drill liquid separators
Print version
|
|
SLOTTED SEPARATORS
WITH FLAT AND TUBE-LIKE ELEMENTS
OF THE MAGNETIC GRID
| Photos 1 and 2, and Figure 1show transit-mode
slotted separators. The processed product in such separator
moves through a magnetic grid formed by streamlined tubes
made of polished stainless steel 12X18H10T. High gradient
magnetic field is formed in the operation region of the separator,
and the detained objects are held at the surface of the magnetic
elements. The rectangular separators with dimensions required
by the Customer can be also produced. Separators of this type
are mounted in devices for purification of flour, grain, tea
leaves, polymer granules and powders in devices for thermoplastic
production. Magnetic separators produced by MMT, Ltd. are
certified by the
Russian epidemiological authority for use in food industry. |
 |
| Figure 1: Design of a
transit-mode slotted magnetic separator produced by MMT, Ltd. |
 |
 |
| Photo 1. Magnetic
system of a transit-mode slotted separator for a cylindrical
(conical) channel. |
Photo 2. Transit-mode
slotted magnetic separator for rectangular channels |
Such separators are widely used in food industry for removal
of magnetic impurities from flour, grain, tea leaf, and also
in polymer production for purification of polymer granules
and powders in thermoplastic machines.
This separator design ensures uniform conditions for removal
of impurities over the cross-section of the product flow.
However, the magnetic elements themselves are a hindrance
to the product flow. Therefore such separators should not
be used for purification of loose products that have a high
internal friction (and therefore tend to caking).
Figure 2 shows a tube-like magnetic element of the separator.
The shell is made of polished stainless steel of the standard
12X18H10T. Such elements are widely used for upgrade of equipment
that lacked magnetic barrage in their initial design. |
 |
| Figure 2: a) Design of
a tube-like magnetic element, b) recommended design for installation
of the magnetic elements in the product flow. |
|
The most efficient design of magnetic element
installation is shown in Figure 2b.This setup is used for
drill liquid filtering in oil production, casting slurry
in ceramic production, and also in other industries mentioned
above. The limitations for application of this design are
the same. Note that this setup of magnetic separator is
the most efficient with respect to the (magnetic field value)/(magnetic
field gradient) ratio. Due to the magnetic design of the
elements, their length L is a multiple of 44 mm, thus it
equals 88 mm, 132 mm, 176 mm,...., 528 mm,
....,660 mm, etc.
|
|
|
