Magnetic separator equipment is widely used in various fields such as mining,
metallurgy, and environmental protection. Its classification and selection are
of great significance for improving mineral processing efficiency and reducing
production costs. The following is a detailed explanation of the classification
and selection guide for magnetic separator equipment:
1、 Classification of magnetic separator equipment
Classified by magnetic field strength
Weak magnetic field magnetic separator: mainly used for sorting strong
magnetic ores, such as magnetite, hematite, etc. Its magnetization coefficient
is greater than 38 × 10-6m/kg.
Strong magnetic field separator: mainly used for sorting weakly magnetic
ores, such as ilmenite, pseudohematite, etc. The magnetization coefficient is
less than 1.9 × 10-6m/kg. The strong magnetic field separator adopts a closed
magnetic system and a certain shaped induction magnetic pole or magnetic medium
to generate strong magnetic field force.
Medium field magnetic separator and high gradient magnetic separator: Medium
field magnetic separator is mainly used for the selection of medium strong
magnetic minerals and the removal of iron from non-metallic minerals, while high
gradient magnetic separator is mainly used to solve the separation problem of
fine minerals.
Classification by sorting medium
Dry magnetic separator: used for air separation, mainly for separating large
and coarse strong magnetic ores and fine weak magnetic ores.
Wet magnetic separator: used for sorting in water or magnetic liquids, mainly
for separating fine-grained strong magnetic ores and fine-grained weak magnetic
ores.
Classification by magnetic field type
Constant magnetic field magnetic separator: using permanent magnet materials,
electromagnets, and screw tubes as magnetic sources, the magnitude and direction
of the magnetic field strength do not change with time.
Rotating magnetic field separator: The magnetic poles rotate around the axis,
and the magnitude and direction of the magnetic field strength change over
time.
Alternating magnetic field separator: using alternating current
electromagnets as magnetic sources, the magnitude and direction of the magnetic
field strength change over time.
Pulsating magnetic field separator: using an electromagnet that passes
through both direct current and alternating current as the magnetic source, the
magnetic field strength changes over time, but the direction remains
unchanged.
Classification by magnetic source
Permanent magnet separator: uses permanent magnet material as the magnetic
source.
Electromagnetic separator: uses an electromagnet as the magnetic source.
2、 Selection Guide for Magnetic Separators
Clear requirements: Firstly, it is necessary to clarify the purpose of
magnetic separation, ore properties, processing capacity, and other
requirements.
Consider ore characteristics: Select the appropriate type of magnetic
separator based on the magnetic, particle size, moisture content, and other
characteristics of the ore.
Pay attention to equipment performance: Pay attention to the magnetic field
strength, processing capacity, energy consumption and other indicators of the
magnetic separator to ensure that the equipment performance meets production
needs.
Considering economic factors: On the premise of meeting production needs,
choose a cost-effective magnetic separator model to reduce production costs.
Reference practical cases: Understand the usage of magnetic separators in the
same industry or similar production lines, and provide reference for
selection.
3、 Summary
The classification and selection of magnetic separator equipment involve
multiple aspects, requiring comprehensive consideration of ore characteristics,
production requirements, equipment performance, and economic factors. Through
the introduction of the above guidelines, we hope to provide some assistance for
you in the selection process of magnetic separator equipment.