News

The difference in the magnetic material of the different components in the separation material

Magnetic separation (also referred to as magnetic separation) is based on the difference of magnetic materials of different components in the separated material, and different types of magnetic separators are used to separate the different magnetic material components in the material. The surrounding space where the magnetic force of the magnet acts is called a magnetic field. The physical quantity that indicates the strength of the magnetic field is called the magnetic field strength. The common symbol H indicates the unit is A/m. The difference of mineral magnetic materials is the basis of magnetic separation. Mineral magnetic materials can be measured, according to the strength of the magnetic material can be divided into minerals: strong magnetic material minerals, weak magnetic material minerals, non-magnetic material minerals. In the magnetic field of the magnetic separator, the magnetic force of the ferromagnetic material mineral is the highest, and the magnetic material of the weak magnetic material mineral is less, and the non-magnetic material mineral is not affected by the magnetic force or the weak magnetic force. In the process of magnetic separation, the ore particles are subjected to various forces. In addition to magnetic forces, there are gravity, centrifugal force, water flow force and friction force. When the magnetic material is subjected to a magnetic force greater than the sum of the remaining forces, it will be sucked out or deviated from the material flow to become a magnetic material product, while the rest will be a non-magnetic material product, enabling the separation of different magnetic material minerals. Magnetic separation is a beneficiation method that uses the difference in various mineral magnetic materials to perform sorting in the magnetic field of a magnetic separator. When the ore particles with different magnetic materials pass the magnetic field of the magnetic separator, they must be subjected to magnetic and mechanical forces. Because the magnetic particles with stronger magnetic material and the magnetic particles with weaker magnetic material have different magnetic forces, different motion trajectories are generated, so that the ore particles can be divided into two or more separate ore dressing products according to their different magnetic materials. . Magnetic separation is widely used in the sorting of ferrous metal ore, the selection of non-ferrous and rare metal ores, the recovery of medium in heavy media beneficiation, the removal of iron-containing impurities from non-metallic mineral raw materials, and the discharge of iron objects to protect crushers and other equipment. , Recover scrap from slag produced from smelting and remove contaminants from production and domestic sewage. In recent years, due to the development of high field strength and high gradient magnetic separators, the application fields of magnetic separation methods are still expanding, such as the removal of chemicals, paramagnetic materials, and granular impurities in medicines.

PREVIOUS：New Artificial Electromagnetic Material R&D PNEXT：Magnetic material infrared carbon and sulfur