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Ferromagnetic impurities in loose materials and
liquids are a serious problem in many branches of industry. Magnetic
impurities (both dispersed and magnetic objects of considerable
size) can reduce the quality of the final products or even damage
valuable equipment.
In particular, the following materials should be free from such
impurities:
- food substances: flour, sugar, coffee, tea,
etc.;
- fodder and provender, haylage, chopped grass,
granules;
- industrial and construction materials: ceramic
powders, alumina, sands;
- chemical materials: granular polyethylene,
polypropylene, PVC, etc.;
- any other loose materials that should be
free from ferromagnetic impurities (e.g., wood chips for production
of resin-bonded chipboards).
- liquid solutions used in ceramics and chemical
production, emulsions, slurry, dross, and also drill liquids
used in oil industry.
Magnetic separators are commonly used to remove
the magnetic impurities from a flow of loose materials and liquids.
We hope that a wide range of magnetic separators produced by the
MMT Company can help you to solve the problem.
Research and production Company MMT Ltd. produces permanent magnets
and magnetic systems for various applications, including magnetic
separators for extraction of ferromagnetic impurities from loose
materials and liquids. The degree of the product purification depends
on many factors even for a given setup of the magnetic separator.
Physical and geometrical properties of the objects to be removed
from the flow, as well as mechanical properties of the product and
flow geometry inside the separator influence the ability of the
magnets to catch the magnetic objects.
Magnetic field in the MMT magnetic separators is produced by modern
high-energy permanent magnets based on Nd-Fe-B sintered compounds.
Relatively small size and high temporal stability of the magnetic
characteristics are among the main features of such magnets. Service
term of such magnets exceeds 10 years, so almost no periodical
control of the magnetic properties is necessary.
We hope that the typical designs of the magnetic separators and
their magnetic systems presented below shall help you to make your
choice or to formulate more detailed specifications. Research and
production Company MMT Ltd. is always ready to adapt the design
of our products for your applications.
Here are several typical designs of magnetic separators developed
and produced by MMT R&P Company.
1. Slotted
separators with flat and tube-like elements of the magnetic grid
2. Flat
magnetic screens
3. Separators
with free passage section for inclined product pipelines
All the magnetic separators produced by the MMT Company are made of materials that do not pollute the separated
products. Optimised magnetic systems of the MMT magnetic separators
made of modern sintered rare-earth permanent magnets with energy
up to 4.5*106 Gs*Oersted ensure unrivalled separation
efficiency.
Construction material used in MMT separators, polished stainless
steel of the standard 12Õ18Í10Ò, prevents spark formation even
when large metallic objects hit the separator wall.
Design of the MMT separators allows to mount them into
any hermetic or open channels with different configuration and
sizes in existing and new developed equipment, and also to use
it separately (e.g., in any convenient place along the conveyor
belt line).
Typical sizes and characteristics of the MMT magnetic separators
are shown in Technical specifications ÒÓ
6391-001-18785310-00 «Magnetic separators for removal of ferromagnetic
impurities». These products comply with the State sanitary
and epidemiological regulations. (See the Sanitary
certificate ¹ 77.01.04.639.Ò.12761.05.2 issued on 06.05.02).
MMT Company also offer a novel Drill
liquid magnetic separator developed and produced on request
of and in cooperation with the oil-producing Stock Company "Surgutneftegaz".
A more detailed information on the magnetic separators produced
by MMT Company can be found in the following papers: Ravdin
A., Dormidontov A.G., Mukho S.B., and Sergeyev S.V. «New
trends in separation of grain and grain products» // «Khleboprodukty»
¹ 5, 2001., pp.18-20 and Ravdin
A., Temirov M., Dormidontov A.G.. «Magnetic separators for safety
control» // «Khleborpodukty» ¹ 9, 2002, pp.26-27.
For a more detailed design of the magnetic separators
see the paper "Magnetic
barrage and separation".
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