Magnetic separators use magnetic fields to separate magnetically susceptible materials from other materials. There are several types of magnetic separators that differ based on factors like the medium of separation and whether the magnets are stationary or moving. Key types discussed include magnetic drum separators, which remove ferrous metals from dry bulk using rotating drums with magnets; ball and norton separators, which use alternating magnetic poles and vibration to separate large amounts of ferrous material; and gravity feed separators, which use vertical flow and gravity to separate narrow materials. Magnetic separators have various industrial applications including in mining, food processing, plastics, and more.

1. MAGNETIC SEPARATION
Group No.04
Muhammad Ashfaq MME-12-12
Muhammad Qaisar MME-12-10
Muhammad Ahmad MME-12-14
Anjum Shahzad Sanghi MME-12-16

2. INTRODUCTION
Magnetic separators are used to separate
valuable minerals from non-magnetic gangue,
e.g. magnetite from
quartz,
All materials are affected in some way when
placed in a magnetic field.

3.  Materials can be classified into two groups.
1. Diamagnetic Materials
2. Paramagnetic Materials
Diamagnetic are repelled along the lines of magnetic
force to a point where the field intensity is smaller.
Paramagnetic are attracted along the lines of
magnetic force to points of greater field intensity.
Examples of paramagnetic are ilmenite (FeTiO3),
pyrrhotite (FeS), and manganese minerals.
Some elements are themselves paramagnetic, such
as Ni, Co, Mn , Cr and Pt.

5. APPLICATIONOF MAGNETISMAS SEPARATOR
1. For the removal of tramp iron in coarse and
intermediate- crushing circuits, as a protection to
the crushing machinery.
2. For the concentration of magnetite ores.
3. For the concentration of iron ore other than
magnetite.
4. For the removal of small quantities of iron ore
minerals from Ceramic raw materials.

6. ELEMENTS OF DESIGN OF MAGNETIC SEPARATORS
1. Production of suitably converging magnetic field.
2. Even feeding of ore particles as a stream or sheet.
3. Control of speed of passage of ore through the
magnetic field.
4. Avoidance of non magnetic material between or
within magnetic flux.
5. Provision of suitable means for disposing of
separated products.
6. Provision for production of a middling.

7. CLASSIFICATIONOF MAGNETIC SEPARATOR
It can be classified according to the medium in which
the separation is made, the mode of the presentation
of the feed, the mode of disposal of the products, &
whether the magnets are stationary or moving.

8. IMPORTANTTYPES OF MAGNETICSEPARATOR
1. EDISON SEPARATOR
2. BALL NORTON SEPARATOR
3. MAGNETIC DRUM SEPARATOR
4. ROLLAR TYPE SEPATOR
5. GRAVITY FEED MAGNETIC SEPARATOR
6. MAGNETIC COOLENT SEPARATOR
7. WET DRUM SEPRATOR

9. EDISONSEPARATOR
Edison separator consists of a bar
magnet .
The ore as thin streams falls in
front of the poles, susceptible
particles being deflected inwards &
non susceptible particles continuing
to fall undeflected.
 This separator was not wholly
successful because of inability of
control flow of solid in a thin sheet,
& because of lack of control over the
speed of the falling particles.

10. Magnetic drum separators are important
magnetic separators that removes ferrous metal from
dry bulk products in free-flowing processing systems.
They are self cleaning unit consisting of drums and
housing normally of stainless steel.
The magnets used by the magnetic drum separators
are either ceramic magnets or rare earth magnets.

11. How it Works?
The processing materials enters the top of the magnetic drum
separator and flows across the surface of the drum.
The rotatory drum in the magnetic field captures the
ferrous tramps whereas non ferrous falls free from the drum
into the cleaned material flow.
As the drum rotates, the ferrous metal so captured is carried
past the diverter and released outside of the magnetic field.
Wet drum separators is a type of Magnetic drum separators.

12. Applications
The magnetic drum separator is ideal for separating iron particles from
granules & powders It is widely used in the following industries:
•Glass
•Ceramic
•Chemical
•Fertilizer
•Plastic

13. Ball Norton Separator
Unlike most magnetic separators which are used to remove
relatively small amounts of metal, the Ball Norton Separator is
designed to handle large amounts of ferrous material - removing
other undesirable elements.
A unique combination of alternating magnetic poles and vibratory
conveying works to clean the magnetic material. Applications
include foundry shot, crushed borings, slag and magnetic ores.

14. How it Works?
The material is discharge on the belt by the feeder. The magnetic roll
is enveloped by the conveyor. The para and ferro magnetic
ingredients remains stuck to the belt whereas non magnetic
ingredients passes freely at the end of the conveyor.
Roller type magnetic separator is
meant to separate ferrous contaminants
from the flimsy magnetized dry granular
metallic and nonmetallic materials.
 Roller type magnetic separator has wide
application in industries and mineral
technology. The separator uses high
powered rare earth magnets with very low
dimensional tolerance.
The other components of the machine
are conveyor and vibratory feeder. The
magnetic rolls are available in different
widths and magnetic strength

15. Applications
Roller type magnetic separator finds applications in the following areas
like:
•Glass industries
•Abrasive refractory
•Quartz cleaning
•Upgrading of graphite
•Recovery of metals from slag removal of ferro silicates
•Chemical industries

16.  Gravity feed magnets separates ferrous tramp metal through
gravity system.
These magnets are constructed out of welded stainless steel
and are available in stainless steel structure.
The gravity magnet comes in different shapes and sizes and are
ideal for narrow chute applications.
Gravity feed magnets are normally used in vertical flow system.

17. Applications
Gravity magnetic separators have different industrial and commercial
usage. They are applied in industries like:
•Food industry
•Chemical industry
•Grain processing industries
Pharmaceutical industries

18. MAGNETIC COOLENT SEPARATOR
Magnetic coolant separator is a
device which cleans the coolant
liquid of very fine ferrous particles.
 It removes the iron chips from
the liquid.
It is light and compact structure
having strong magnetic power
which can remove very fine ferrous
particles.
 For precise operations
uninterrupted flow of oil is must.
The coolant magnetic separator
ensures the uninterrupted flow of
the liquid.

19. WET DRUM SEPARATOR

20. Features
 Wet drum magnets have high magnetic recovery and
discharge.
 The feed slurries recover the magnetics.
 Available in single or multiple drum applications.
 The magnet / pole elements are bolted to a mild steel
shaft.
 The drum is made from thick stainless steel for long
service life.
 Wet drum separators are available in different
configuration like single drum,double drum and multiple
drum. In double drum two separators are arranged back
to back with a common feed back.

21. Applications
 Glass industry
 Chemical industry
 Plastic industry
 Mining industry
 Food industry
 Pharmaceuticals industry
 Foundry industry

22. THANK YOU