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How Raw Materials Affect the Working Effect of Powder Magnetic Separator

3/28/2015 5:03:20 PM3/28/2015 5:03:20 PM

The production efficiency of powder magnetic separator is affected not only by the equipment itself, but also natures of raw materials, for example, the shapes and sizes of materials, the strong magnetic minerals proportion, and the oxidation degree of materials, etc. this paper will make a detailed summary around it.

1. The particle size of materials: the magnetic domain of smaller size material is less than that of big size materials. Therefore, smaller size material is more difficult to be separated. Thus the separating effect of powder magnetic separator is poor at this time.

2. Shapes of materials: different shapes of materials display different magnetic even they are magnetized in the same magnetic field. The magnetization and magnetic susceptibility of elongated particles are larger than the ball-shaped particles. The magnetization and magnetic susceptibility of ball-shaped particles have a close relationship with their length. The magnetization and magnetic susceptibility of longer materials are bigger. Thus the separating effect of powder magnetic separator is good when it used for processing long shape materials.

3. The content of strong magnetic minerals: locked particles of magnetite ore and gangue minerals are extremely easy to mix in the magnetic concentrate in the production process, affecting the quality of concentrate. The magnetic of locked particles is related to the structure and magnetic intensity of locked particle. Thus the separating effect of powder magnetic separator is good when it used for processing strong magnetic mineral

4. The oxidation degree of minerals: parts or all of magnetite is oxidated and turns into martite after depositing for a long term. As the increase of the oxidation degree, the magnetic of magnetite is weakened significantly. The maximum value of susceptibility is less and less obvious. The curve is getting closer and closer to a horizontal line. Thus the separating effect of powder magnetic separator is poor when it used for processing high oxidation degree of oxidated minerals.

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