Magnetite beneficiation process is generally crushing, pre-selected
cast the waste, grinding, classification, magnetic separation. Ball
Mill adopts energy saving cone ball mill, magnetic separator using
a new composite magnetic system , thus energy-saving effect is
significant with high production efficiency, high recovery rate and
thoroughly separation; After the period of screening of the of
magnetic concentrate through the high-frequency fine sieve,
regrinding and the process of re-election are effectively improve
the quality of production efficiency and iron powder. Some of the
iron powder with excessive harmful impurities adopts a new
anti-flotation process, and can completely solve the problem of
high impurity content in some of the ore iron powder.
Magnetite beneficiation process
The most extensive magnetite beneficiation process is wet and dry
joint beneficiation process, mainly the three magnetic separation
of ore and then through the wet material magnetic separation.
Magnetic separation of the selected magnetic field strength is
between 400 and 1200GS, the magnetic roller speed is varied from 60
to 320 rev / min, the wet material by dehydration become finished
products of iron ore powder, generally 35% of the iron content in
ore, after magnetic separation by this method ,iron ore powder iron
content up to 68 ~ 70% . The ore utilization by joint process
method can be up to 90% , using less water in the process, and also
save water, reduce costs, reduce pollution. Magnetic separation in
the dust by the dust removal device capture, will not cause air
Magnetite ore dressing equipment
1. crushing process:due to the hardness of the iron ore, coarse broken adopts a large
jaw crusher, vibrating feeder in front of the crusher, give into
the jaw crusher mineral raw materials at the same time, screening
for the ore + 75mm and -75mm two kinds of grain size, +75 mm grain
size into the jaw crusher for coarse break, -75mm grain size into
the cone crusher.
2. grinding process:due to the hardness of the ore, disseminated fine particle size,
using the ordinary period of grinding processes is difficult to
achieve production and monomer dissociation degree, and the process
uses two grinding processes so that both reduce the mineral to
excessive wear caused by the ore mud and enhance mill efficiency,
to increase production to achieve the required grinding fineness.
3. sorting process:the selection process using three permanent magnet drum magnetic
separator selection, some sorting using a magnetic separator, Sec
sorting using a roughing separator selected magnetic machine in
order to achieve the above requirements in concentrate grade of 63.
The sorting process add a demagnetized process, to take off
minerals minerals brought by the magnetic separation process, to
avoid generate magnetic flux linkage that affects the upgrade of
the concentrate grade.