APPLICATION TECHNICAL MANUAL OF
XINHAI MINING MACHINERY PRODUCTS
■ MAGNETIC SEPARATING
Eccentric 360° Magnetic Belt-free Automatic Mineral Unloading
Permanent Magnetic Dry Separator
Patent product (patent application No.: 201410328639.2)
Scope of Application
To be applied to the dry preconcentration of lean magnetite ore before
grinding with the selected granularity of below 30mm. The finer the
granularity is, the better the result is. Generally, large amount of tailings
can be discharged, and the grinding quality can be greatly enhanced.
To be applied into the dry preconcentration of rich magnetite ore before
grinding with the selected granularity of below 30mm. The finer the
granularity is, the better the result is. Generally, proper quantity of tail-
ings can be discharged, and the grinding quality can be enhanced above
geological grand.
To be applied to dry separation and recycling of the lost magnetite from
the abandoned tailings.
To be applied to dry separation and recycling of ferromagnetic materials from
the abandoned steel slag.
团
集
海
Principle
Feeder
Non (weak) magnetic
minerals
Mineral
separation plate
Rotating
magnetic
system
Separation
cylinder
Fixed
magnetic
system
Ore dumping
As shown in the figure, the separation cylinder without belt outside will en-
cylinder
hance the intensity of magnetic field of the separation area. The rotating mag-
Magnetic
minerals
netic system (wrap angle of 360 degree) is set inside the separation cylinder,
while the fixed magnetic system (magnetic wrapping angle of less than 90 de-
gree) is set inside the ore dumping cylinder. The rotation direction of the sepa-
ration cylinder is as the same as that of the ore dumping, but is opposite to that of the rotating magnetic system.
When the materials feeder transports the minerals to the separation area of the separation cylinder, the magnetic min-
erals will alternate rapidly and repeatedly within a short time through the North Pole and South Pole of the magnetic
field, and the magnetic minerals will do magnetic reversal and magnetic agitation. The non-magnetic (weak) magnetic
mineral mingled in the magnetic minerals is not or slightly affected by the adsorption of the magnetic force, moving to
the outer layer gradually, and is thrown out by the centrifugal force, gravity and the joint action of magnetic turn and
agitation of magnetic minerals.
In the separation area of the separation cylinder, the centrifugal force and gravitation of magnetic minerals mingled
with non-magnetic minerals is much less than the magnetic force. With the adsorption of the magnetic force and the
joint action of the magnetic turn and agitation of magnetic minerals, the magnetic minerals will move to the inter layer
gradually. When the magnetic minerals rotate to the ore unloading area with the separation cylinder, as the rotation
magnetic system is eccentric, the magnetic density of the ore unloading area for the separation cylinder is extremely
weak, and most of the magnetic minerals can fall off automatically. A small quantity of magnetic minerals not falling
off will be adsorbed to the external surface of the ore unloading cylinder with higher magnetic density when rotating
to the position nearby the ore unloading cylinder so as to realize the automatic unloading of magnetic minerals.
鑫
Technical Advantages
This patented product is a kind of upgrading equipment based on conventional magnetic roller or conventional dry
separator. When it is working, the magnetic minerals will take rapid magnetic reversal and magnetic agitation, which
will significantly reduce the number of non- magnetic (weak magnetic) minerals in the magnetic minerals. In this way,
the efficient separation of magnetic minerals and non- magnetic (weak magnetic) minerals will be realized, and fine
magnetic minerals and coarse magnetic minerals will not get lost.
This patented product solves the eddy current heating problem and mine unloading problem of conventional 360 de-
gree rotating magnetic dry separator. The conventional 360 degree rotating magnetic dry separator must use the belt
to unload the mine by the outside of it, therefore the magnetic minerals are easy to enter the central space between
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