According to the name, we can understand that the dry magnetic separator is relative to the wet magnetic separator.
①Dry magnetic separator is mainly used for iron selection in dry areas or iron removal for refractory materials and other materials. The magnetic system of the magnetic separator is made of high-performance rare earth NdFeB material and high-quality ferrite material. After ingenious open magnetic circuit design, the highest magnetic induction intensity of the drum table separation area reaches above 0.8T, and the magnetic field strength is the same as that of conventional medium magnetic machines. 3-5 times of that, the magnetic field force in the sorting area can reach the magnetic level of the electromagnetic strong magnetic separator.
The sorting cylinder of the magnetic separator is made of wear-resistant stainless steel; the sorted minerals are evenly fed to the upper part of the sorting cylinder through the vibrating feeder. The rotating cylinder throws the non-magnetic materials away from the cylinder, and the magnetic materials are subjected to a strong magnetic field. The force is sucked to the cylinder, and the magnetic and non-magnetic materials can be separated conveniently and accurately with the ore separating plate.
②The working principle of the wet magnetic separator is that after the ore pulp flows into the tank through the ore feeding box, under the action of the water flow of the ore feeding spray pipe, the ore particles enter the ore feeding area of the tank in a loose state. Under the action of the magnetic field of the magnetic separator, the magnetic ore particles are magnetically aggregated to form a "magnetic group" or "magnetic chain". on the cylinder.
Since the polarities of the magnetic poles are arranged alternately along the direction of rotation of the cylinder, and they are fixed during operation, when the "magnetic group" or "flux chain" rotates with the cylinder, magnetic stirring occurs due to the alternation of magnetic poles, and is mixed The non-magnetic minerals such as gangue in the "magnetic group" or "magnetic chain" fall off during the turning, and the "magnetic group" or "magnetic lotus" that is finally attracted to the surface of the cylinder is the concentrate.
The concentrate moves to the edge of the magnetic system with the weakest magnetic force along with the cylinder, and is unloaded into the concentrate tank under the action of the flushing water jetted from the unloading water pipe.
③Permanent magnetic drum magnetic separator is suitable for wet magnetic separation of magnetite, pyrrhotite, roasted ore, ilmenite and other materials with a particle size of less than 3mm, and is also used for the removal of coal, non-metallic minerals, building materials and other materials. iron work.
