Why should we perform weak magnetic separation before strong magnetic separation?
published date: 2019/7/16
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what is magnetic separation in chemistry?
The weak magnetic (or medium magnetic) selection before strong magnetic is mainly to remove ferromagnetic minerals such as ferromagnetic and semi-artificial hematite, so as to avoid magnetic blockage in the separation of strong magnetic separator. Ensure strong magnetic selection is smooth; strong magnetic selection magnetic field is 10000 Gauss, residual magnetic field is also 300~500 Gauss, which is enough to absorb strong magnetic magnetite, iron powder, etc. Therefore, it is difficult to completely unload even in strong magnetic unloading area. In addition, it will cause magnetic blockage of the strong magnetic machine sorting medium. Among the natural ores, even weak magnetic iron ore such as hematite, magnetite ore, semi-artificial hematite, etc., which are more or less a little ferromagnetic, and iron balls added after grinding More ferromagnetic;