Introduction to different categories of mineral processing equipment magnetic separator

Our country is first discovered magnetic iron, and it is the first application of magnetic phenomena. As early as three hundred BC, the phenomenon of magnet attracting iron filings was discovered.
Magnetic separation is selected based on the difference in magnetic properties of mineral particles. When the mineral particles and gangue particles pass through the magnetic field of the magnetic separator, due to the different magnetic properties of the ore particles, they move in different ways under the action of the magnetic field. The magnetic ore particles are attracted by the magnetic force and adhere to the cylinder of the magnetic separator. After being brought to a certain height together with the cylinder, the magnetic field is removed from the cylinder by high-pressure flushing water.
The non-magnetic or gangue particles are not attracted by the magnetic force in the magnetic field of the magnetic separator and thus cannot adhere to the cylinder . Thus, two products are obtained, one is that the magnetic product enters the concentrate box, and the other is that the non-magnetic product enters the tailing box.
The magnets are divided into natural magnets and artificial magnets. Artificial magnets are divided into two types: one is a permanent magnet; the other is an electromagnet. The difference is that the permanent magnets of a magnetic material (e.g. magnetic alloys, ceramic magnets, etc.) made. The electromagnet is wound around the outer core of the iron core, and magnetic current is generated by the direct current, and the magnetic force disappears after the power is turned off.
Currently used are permanent magnets. Made by the permanent magnet magnetic separator called permanent magnetic separator, mineral processing equipment is commonly used black beneficiation plant.
The magnetic field is divided into a uniform magnetic field and an inhomogeneous magnetic field. In a uniform magnetic field, the strength and direction of the magnetic field at any point are the same. In a uniform magnetic field, the magnetic force acting on the magnetic ore particles is uniform. At this time, the ore particles are in equilibrium, so the purpose of sorting cannot be achieved . . In the inhomogeneous magnetic field, the magnitude and direction of the magnetic field strength are different. At this time, the magnetic force acting on the magnetic ore particles is not uniform, so the magnetic ore particles move under the action of magnetic force to achieve the purpose of sorting .
The magnetic separator uses only a non-uniform magnetic field. In an inhomogeneous magnetic field, the magnitude of the magnetic force acting on the magnetic ore particles is proportional to the degree of unevenness. The more uneven the magnetic field, the greater the magnetic force acting on the magnetic ore particles. The inhomogeneity of the magnetic field strength is usually expressed by a magnetic field gradient in units of Oersted/cm.
The magnetic separator is one of the most widely used and highly versatile models in the industry, and is suitable for recycling iron powder in powder granules. Magnetic separators are widely used for resource recovery in wood, mining, kiln, chemical, food and other workshops. Magnetic separator suitable particle size below 3mm manganese ore, magnetite, pyrrhotite, roasted ore, titanium, iron and other materials, wet or dry magnetic separation, but also for coal, non-metallic minerals, building materials and other materials Iron removal work.
The magnetic system of the magnetic separator is mostly made of high-quality ferrite material or composited with rare earth magnetic steel. The average magnetic induction intensity of the previous cylinder is 800-4000mT. Due to the development of technology, the magnetic separator can be made into a roller shape and the magnetic field strength. Also increased to 8000mT. It is already the highest measured magnetic field strength.
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