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Reasons for the impact of dry magnetic separation
published date: 2019/5/5

electromagnetic separator manufacturer

PTMS MAGNETIC SEPARATOR

hat is magnetic separation method in hindi?

 

Dry iron removal is commonly used for magnetite ore, pyrrhotite, calcined ore and ilmenite, and is also used in coal-based, non-metallic minerals, building materials and other iron-removing materials.

 

(1) Thickness of the feed layer: According to the particle size of the raw material and the relevant content of the magnetic particles, the coarsely processed feed layer of the general treatment is coarser than the coarse particles. When processing coarse ore, it is about 1.5 times the largest particle. In the classification process, four times the maximum particle size can be achieved, and the level of the fine material can reach 10 times the thickness of the particle. The content of magnetic substances in the raw materials is not high, and there should be some thin seams. If the bottom of the magnetic particles is too thick under the pressure of the upper material, the absorption recovers to cause a magnetic force. The magnetic particles are high in content and the seams can be thicker.

Affect the cause of dry magnetic separation

(2) The magnetic field strength and the particle size of the material to be processed, the magnetization level is closely related to the requirements. When the working gap must be determined by the number of turns of the coil between the poles, the number of turns cannot be adjusted, and only the magnitude of the field current can be changed. To adjust the magnetic field strength. For the treatment of magnetic strong red, such as homework, weak magnetic field should be used to deal with magnetic materials and magnetic weak sweeping operations, and the field strength should be high. When the current is changed, changing the working size can not only change the magnetic field strength, but also change the magnetic field gradient and reduce the magnetic gap force of the magnetic field gap to increase sharply. Generally, the particle size should be reduced as much as possible to improve the recovery rate. When selecting, it is best to adjust the gap to increase the selectivity for the purpose of boosting, but increase the excitation current at the same time to ensure proper magnetic field strength requirements.

 

(3) Feed speed, feed rate is determined by the speed of the vibration groove (or belt). The mechanical force determines the duration of the spiral particle in the magnetic field. The higher the velocity, the shorter the time in the magnetic field, the gravity of the mechanical force is mainly gravity and inertia knife, the gravity is a constant, the square of the inertial force and velocity Just proportional. Magnetic particles that are weaker than gravity in a magnetic field. Therefore, the increase in velocity exceeds the limit of inertial force, and the amount of adsorption of magnetic force is less than that, resulting in a decrease in recovery. Therefore, it is chosen not to use weak magnetic minerals at the ferromagnetic mineral feed rate. Under normal circumstances, the monomer particles are selected from many raw materials, the magnetic properties are strong, the feed rate can be increased, the substances contained in the raw materials are removed, the volume is smaller, the magnetic properties are weaker, and the feed rate should be lower. When the fine particles are treated, the loosening of the ore particles is promoted, the frequency of the vibrating trough should be high, and the amplitude is small; when the coarse particles are treated, the opposite is true, and the suitable operating conditions should be determined experimentally according to the ore properties and the sorting quality requirements. When dealing with rare metal ore, it should keep the narrow-grain feed ingredients dry, which is beneficial to the improvement of the index. It has a wide feed grade because its particle size is greatly affected by the magnetic force, and it also increases the difficult conditions for selecting and not choosing. It is indicated that the classification of the original sieve is that the more indexes, the better. In a concentration plant in China, the original sieve is divided into 2 (3) ~ (20 eyes) 0.83 mm, 0.83 ~ 0.2 mm (65 mesh) and 0.2 ~ 0 mm three-stage treatment, and the classification index is increased by 10% compared with the classification index. The moisture in the raw material allows the particles to adhere to each other, and the finer the particles, the higher the degree of adhesion, so the raw materials allow different levels of moisture. General - 3mm material can make moisture below 1% fine particles. More strict. Therefore, the raw materials allow different levels of moisture. General - 3 mm material allows for moisture below 1% fine particles. More strict. Therefore, the raw materials allow different levels of moisture. General - 3 mm material allows for moisture below 1% fine particles. More strict.

 

It means the introduction of the dry type except the suspension indicator.

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