Magnetic separator

Magnetic separators are one of the most widely used and highly versatile models in the industry. They are suitable for the separation of substances with magnetic differences. Magnetic separators are widely used in mining, wood, kiln, chemical, food and other industries. As far as mining is concerned, magnetic separators are suitable for wet or dry magnetic separation of manganese ore, magnetite, pyrrhotite, roasted ore, ilmenite, hematite and limonite with a particle size of less than 50 mm. It is also used for iron removal operations of coal, non-metallic minerals, building materials and other materials. Magnetic separators are divided into two types. The magnetic system of permanent magnet separators is mostly made of high-quality ferrite materials or compounded with rare earth magnetic steel. In the early days, the average magnetic induction strength on the surface of the magnetic cylinder of the magnetic separator was 80-400mT. With the continuous development of technology, after the magnetic separator can be made into a roll shape, the magnetic field strength has also increased to 1650mT, which is already the highest measured magnetic field strength so far.

Working principle: After the slurry flows into the tank body through the ore feed box, the ore particles enter the Kuangqu of the tank body in a loose state under the action of the water flow from the ore feed spray pipe. Under the action of the magnetic field, magnetic mineral particles magnetize to form "magnetic clusters" or "magnetic chains". The "magnetic clusters" or "magnetic chains" are subjected to magnetic force in the slurry, move towards the magnetic pole, and are adsorbed on the cylinder. Since the polarity of the magnetic poles is alternately arranged along the rotation direction of the cylinder and is fixed during work, when the "magnetic mass" or "magnetic linkage" rotates with the cylinder, magnetic stirring occurs due to the alternating magnetic poles. Non-magnetic minerals such as gangue trapped in the "magnetic mass" or "magnetic linkage" fall off during turning, and the "magnetic mass" or "magnetic linkage" that is finally attracted to the surface of the cylinder is the concentrate. The concentrate moves with the cylinder to the point where the magnetic force is weakest at the edge of the magnetic system, and is discharged into the concentrate tank under the action of flushing water sprayed out of the ore unloading water pipe. If it is an all-magnetic magnetic roller, the ore unloading is carried out with a brush roller. Non-magnetic or weakly magnetic minerals are left in the slurry and discharged out of the tank with the slurry, which is tailings

Technical characteristics: The WD series of high-gradient magnetic separation equipment brings together large-cavity high-performance physical magnet technology, new multi-pronged non-embroidered magnetic-conductive polymer magnetic fiber material technology, solid-liquid-gas three-phase flow membrane sorting technology, high-power low-voltage high-current rectification technology, PLC electronic control technology and flow, temperature, pressure and other testing technologies. The sorting magnetic field is high (up to 2.2T), the magnetic field gradient is high, and the magnetic field size can be freely adjusted as needed. Using programmable control, the entire production process is fully automatically controlled, making it convenient to change the process flow.

Structural characteristics: This series of magnetic separators is suitable for wet magnetic separation of magnetite, pyrrhotite, roasted ore, ilmenite and other materials with a grain size of 0.1-3mm, and is also used for iron removal of coal, non-metallic ore, building materials and other materials. The magnetic system of the machine is made of high-quality ferrite material or composite with rare earth magnetic steel. The average magnetic induction strength of the cylinder surface is 100~600mT. The magnetic separator has the advantages of simple structure, large processing capacity, convenient operation, easy maintenance, etc. Structural characteristics of the magnetic separator: The wet permanent magnet drum magnetic separator is mainly composed of four parts: cylinder, magnet system, tank body and transmission part. The cylinder is rolled and welded into a cylinder by 2- 3mm stainless steel plate, and the end cover is made of cast aluminum and connected to the cylinder with stainless steel screws. The motor drives the cylinder to make a rotary motion through a reducer. The magnetic system is an open magnetic system and is installed in a cylinder. At present, the highest magnetic field strength of the magnetic separator (actually measured) is 16500GS, which is very effective for the separation of limonite. For ordinary high-intensity magnetic separators, the ring of 150 can only reach 13500GS, so 16500GS is a revolutionary progress.