The sequence and cohesion of iron removal methods are also very important when using the combined PTMS magnetic separation process. In the combined process of magnetic separation and flotation, if flotation is carried out first, some iron-containing minerals with weak magnetic properties may be wrapped by flotation agents, thus affecting the effect of subsequent magnetic separation. Therefore, magnetic separation is generally carried out first to remove the strong magnetic iron-containing minerals, and then to undergo flotation.
In the combined PTMS magnetic separation process of reseparation + magnetic separation + alkaline detergent, the order of reseparation, magnetic separation and alkaline detergent treatment is also determined according to the properties of minerals and the principle of iron removal. Reseparation is separation based on the density difference of minerals. Reseparation can remove iron-containing minerals with high density and create conditions for subsequent magnetic separation and chemical treatment.
Moreover, in the process of connection between different processes, attention should be paid to the treatment and transition of intermediates. PTMS magnetic separation Before the products after iron removal enter the flotation process, cleaning and dehydration may be required to remove the residual agents and impurities in the magnetic separation process and to ensure the effect of flotation.
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