PERMANENT MAGNETIC OVERBAND SEPARATOR
for
efficient separation of tramp iron
Jupiter
Permanent Magnetic Overband Separator are used to separate ferrous metal from
any kind of bulk material. They are used to recover magnetic particles from
slag, industrial waste, foundry sand etc. and are utilized to protect crushers,
belt conveyors, screens or grinders from metallic tramp particles.
When a
large volume of tramp iron is expected, a self-cleaning type separator with
extraction belt is more economical than a simple suspended magnet which is
sufficient for small quantities. Most beneficial are Permanent Magnetic
Overband Separator for small distances and economical operation.
Advantages:
• minimized operating cost
• explosion proof
• no electric connection of the magnet,
just for the extraction belt
• heavy design
• low weight
• fast payback
• available with or without extraction
belt (automatic or manual cleaning)
• tailor-made solutions
OVERBAND PERMANENT MAGNET
SEPARATOR’S SOME INSTALLATION PROBLEM
The Cross Belt Overband Magnetic Separator is one of the most commonly used Magnetic
Separators. The simple design of two pulleys mounted on a frame with a
magnetic block in the middle has been manufactured for decades. As the
name suggests, the Cross Belt Overband Magnetic Separator is positioned above a
conveyor, either over the head pulley, or more, commonly across the belt.
Unfortunately, the separation performance is often poorer than expected simply
because the installation is not correct. Here are 3 typical installation
issues that can be easily remedied to improve the level of separation:
1.
Being
suspended too high
Every Cross Belt Overband Magnet will be designed to
operate at a specific height above the conveyor. To accommodate an
occasional surge of material, the Overband Magnetic Separator can be
temporarily raised and then, as the magnetic field is further away from the
conveyor belt, the separation performance falls. Often, when the Overband
Magnetic Separator is raised it is not then lowered back to the original
position resulting in an ongoing poor separation performance. If surges
are common, a larger Cross Belt Overband Magnet suspended at a higher height
may be the solution;
2.
Being
too narrow for the conveyor
This can occur from day one, with the Cross Belt Overband
Magnet not being wide enough for the conveyor width or when the Overband Magnet
has been relocated within a plant. This results in material being lifted
out of the material and then dropped back onto the conveyor as the magnetic
block is not wide enough to transfer and discharge the metal outside of the
belt and framework. The only solution is often to invest in a wider
Magnet;
3.
Incorrectly
positioned over the conveyor belt
Many Cross Belt Overband Magnets have
a single pole in the center of the magnet block. The maximum level of
attraction and separation is achieved directly under this center line.
Often, and especially when the Cross Belt Overband Magnet is too narrow for the
conveyor belt, the center line is positioned to one side of the conveyor nearer
the area of discharge. However, this means that it is less likely that
any ferrous metal on the opposite side of the conveyor will be separated as the
magnetic field is significantly lower.
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