With the improvement of the technological level of mineral processing and the improvement of the requirements of the key technical and economic indexes, such as the medium consumption of the concentrator, the demand for the separation effect of the magnetic separator has been constantly improved. Therefore, the factors affecting the separation effect of the wet magnetic separator have become a widely discussed problem. This article will analyze the influence from three different aspects. The factors to prepare the separation effect.
First, the influence of the size of the working gap of the wet magnetic separator on the effect of magnetic separation. The working gap of the magnetic separator is the distance between the cylinder and the tank. The spacing is one of the factors that affect the quality of beneficiation. The gap is too small, that is, the distance between the cylinder and the tank is too close. When the pulp is passed, not only does it affect the amount of treatment, but also because the distance is too small, the particles of magnetic size will get a full chance of suction to the barrel. The main reason is that the ore slurry is too close to the magnetic field and the magnetic field intensity is very high. However, it is beneficial to reduce the tailings grade and increase the recovery rate. If the distance is too large, only the strong magnetic particles can be selected, the weaker one can not be picked up. Although the grade of the concentrate is improved, the tailing grade is also increased, and the recovery rate is reduced. So it is very important to adjust the work gap. In the field production, the working gap is generally adjusted in the range of 35 to 60mm as required. The clearance can be adjusted by adjusting the gasket below the bracket angle steel.
Second, the influence of the rotational speed of the wet magnetic separator on the magnetic separation effect is generally said that the diameter of the magnetic separator is high, for example, the diameter of the 600mm is 40rpm, and the diameter of the magnetic separator is low, such as the diameter of 36rpm, such as the diameter of 750mm. The speed of magnetic separator mainly affects the processing capacity. High speed, high processing speed, low rotational speed and low processing power. It has a certain influence on the quality of the concentrate. High speed magnetic separator in operation, because of faster speed, smaller magnetic particles and gangue on the chance of less, only those high magnetic particles may be selected, so the quality of the concentrate is higher. On the contrary, the speed is relatively low, and the speed is relatively slow. Because of magnetic induction, the ore grains with weak magnetism will also have the opportunity to choose them, which will cause the quality of concentrate to be affected. Three. The influence of the magnetic separation angle on the magnetic separation effect of the magnetic separator, the magnetic separator is equipped with a magnetic deflection indicator on the axle head of the transmission side, and the adjustment nut can adjust the size of the magnetic bias angle. The angle of magnetic declination is too small to be too small, too small to affect the quality of the concentrate, so that the smaller magnetic particles have the opportunity to choose, but it will reduce the grade of the tailings and be good for the recovery rate; the angle is too large to improve the quality of the concentrate, because only the magnetic particles have the opportunity to be selected, and the magnetism is small. The opportunity to enter the tailings will increase the tailing grade and reduce the recovery rate. Therefore, the appropriate size of magnetic declination must be adjusted according to the operation requirements. The magnetic declination of the general production site is adjusted to about 15 to 20 degrees. Adjust the deflection angle of the magnetic system. If there is no change in operation conditions and requirements in production, do not move easily.