Magnetic Separator
PRODUCT INTRODUCTION
The magnetic separator is a separation and screening device used for the removal of iron powder from powdered granules and the separation of materials with magnetic differences. The magnetic system of the magnetic separator is made of high-quality ferrite materials or a composite of rare-earth magnetic steel, with an average magnetic induction intensity of 100–600 mT on the drum surface. It is suitable for the wet magnetic separation of materials such as magnetite, pyrrhotite, roasted ore, and ilmenite with a particle size of up to 3mm. It is also used for iron removal operations in coal, non-metallic minerals, building materials, and other materials. With advantages such as simple structure, high processing capacity, easy operation, and low maintenance, it is one of the most widely used and highly versatile machines in the industry. According to user needs, Sibo Machinery can provide various types of magnetic separators with different surface strengths, including concurrent flow, semi-countercurrent flow, and countercurrent flow.
ADVANTAGE
- Multiple Options and Wide Applicability.** Magnetic separators can be categorized into dry iron removers and wet iron removers based on the dry or wet processing method. Depending on user requirements, three types of tank configurations—concurrent flow, counter-current flow, and semi-counter-current flow—are available to suit different materials.
- No Clogging and High Processing Capacity.** The magnetic separator features an enclosed open magnetic system, which prevents material agglomeration and clogging, ensuring high processing capacity. A single primary separator can handle over 50 tons of raw ore, and multiple units can be connected in series to significantly increase production.
- Advanced Technology and Reliable Operation.** The design prevents tank wear and corrosion, extending the magnetic separator’s service life. The bearings of the magnetic separator have high load-bearing capacity, ensuring trouble-free operation with smooth and reliable performance.
- High Magnetic Field Intensity.** The magnetic system is made of high-quality ferrite materials or composite rare-earth magnetic steel, providing high magnetic induction intensity and deep magnetic field penetration. It is one of the most widely used and versatile models in the industry.
WORKING PRINCIPLE
The magnetic separator mainly consists of six parts: the cylinder, roller, brush roller, magnetic system, tank body, and transmission section. During operation, the ore pulp flows into the tank through the ore box. Under the action of the water flow from the feed water pipe, the ore particles enter the feeding zone of the tank in a loose state. Under the influence of the magnetic field, the magnetic ore particles undergo magnetic aggregation, forming “magnetic clusters” or “magnetic chains.” These clusters or chains, subjected to magnetic forces within the pulp, move toward the magnetic poles and are adsorbed onto the cylinder.
As the magnetic poles are alternately arranged along the rotation direction of the cylinder and remain fixed during operation, the rotation of the cylinder causes alternating magnetic polarities, resulting in magnetic agitation. This agitation dislodges non-magnetic gangue minerals trapped within the “magnetic clusters” or “magnetic chains.” The “magnetic clusters” or “magnetic chains” adsorbed on the surface of the cylinder ultimately become the concentrate.
The concentrate is carried by the cylinder to the edge of the magnetic system, where the magnetic force is weakest, and is discharged into the concentrate tank by the flushing water flow from the discharge water pipe. In the case of a fully magnetic roller, the concentrate is discharged using a brush roller. Non-magnetic or weakly magnetic minerals remain in the pulp and are discharged out of the tank as tailings.
