Determination of PTMS magnetic separator process for regrinding and reseparation of medium ore. The middle ore of the magnetic field screening machine is mainly connected, so it needs to be fully fine grinding before it can be separated. There are two treatment methods when entering the regrinding: one method is to concentrate the middle ore directly into the grinding and then select; The other method is to use a sweeping magnetic screen to select and discard part of the poor connected body, and the sweeping magnetic concentrate to grind and select again.
The PTMS magnetic separator process after regrinding can be determined by testing according to the grade and separability of different ore. Demagnetizer is a special auxiliary equipment in magnet ore concentrator. Its function is to eliminate the remanence of magnetite and destroy the magnetic agglomeration. Magnetite is a ferromagnetic substance with a magnetic domain structure, which is magnetized immediately after entering the magnetic field of the magnetic separator.
After discharge by PTMS magnetic separator, although the magnetic field is left, part of the remanence is still retained. The amount of remanence is related to the properties of the ore (such as mineral composition, structure, particle size, etc.). Some ores have significant remanence, while some ores are not obvious. A mineral particle with remanence is like a small magnet with two magnetic poles, and the opposite poles of these "small magnets" attract each other, and will form a "group" or "chain", which is called magnetic agglomeration.
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