The Differences Between Dry Magnetic Separator and Wet Magnetic Separator(2)

The process is more complex, need to rely on water as the medium for selection. Common wet magnetic separation equipment includes: wet low intensity magnetic separation equipment (magnetic dewatering tank, permanent magnet cylinder type magnetic separator), wet magnetic separation equipment (wet induction roll type magnetic separator, Jones type magnetic separator, flat ring magnetic separator). According to the tank structure can be divided into wet magnetic separator downstream, countercurrent and semi-countercurrent type three.

Wet magnetic separator saves energy and reduces consumption, can effectively utilize extremely lean iron ore and improve the quality of final iron concentrate. Generally used for fine grade strong magnetic and weak magnetic ore and iron powder selection. Two commonly used wet magnetic separators are down-flow magnetic separators and semi-countercurrent magnetic separators.

Down-flow magnetic separator refers to the direction of pulp movement and the direction of cylinder movement or product movement. Pulp from the feed box directly into the cylinder magnetic system below, non-magnetic and magnetic weak particles discharged from the gap below the cylinder, magnetic particles are sucked on the surface of the cylinder, with the cylinder rotating to the edge of the magnetic field is weak, by the discharge water pipe to the concentrate tank. The downstream magnetic separator has large processing capacity and can be used in series. It is suitable for roughing and selection of coarse strong magnetic ore with particle size 0~6mm and can also be used for recovering magnetic heavy media.

Semi - countercurrent magnetic separator has higher concentrate quality and metal recovery. The slurry is loosely suspended into the sorting space under the tank body, and the direction of the slurry movement is basically the same as that of the magnetic force. Therefore, the ore particles can reach the surface of the cylinder with high magnetic force, and the tailings are discharged from the tailings hole on the bottom plate, so that the overflow surface height can maintain the level of the slurry in the tank body. Semi-countercurrent magnetic separator is widely used to deal with fine particles (less than 0.2mm) of strong magnetic ore roughing operation and selection operation, can be used in combination with more, improve concentrate grade.

The choice of magnetic separator is a comprehensive consideration of the problem, want to know what kind of magnetic separator should be used, or need to go through a series of processes such as beneficiation test or consulting professional experienced manufacturers, according to the specific situation of different mines.