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For some extremely difficult to dissociate encapsulated iron impurities, high gradient PTMS ELECTROMAGNETIC SEPARATOR can be used for pretreatment first, and high intensity pulse magnetic field can be used to disintegrate iron mineral particles from kaolinite lattice, so as to create favorable conditions for subsequent deep iron removal. Meanwhile, flotation process is also being innovated.

PTMS ELECTROMAGNETIC SEPARATOR

Traditional flotation methods predominantly rely on single reagents, which often lead to non-selective adsorption of kaolinite surfaces and reduce concentrate grade. Modern optimization strategies emphasize "precise regulation". To address the common quartz-iron co-occurrence in sandy kaolin, adjusting the pulp pH to an acidic environment (pH=4-6) and combining fatty acid-based with amine-based collectors can effectively enhance PTMS ELECTROMAGNETIC SEPARATOR's selective adsorption capacity for iron oxides.

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Furthermore, the application of carrier flotation provides a novel approach for iron removal in complex systems—— By adding quicklime as an inorganic carrier, which carries a positive charge on its surface, it preferentially adsorbs negatively charged Fe₂O₃ colloidal particles. Subsequently, these particles are carried upward by bubbles through separation, achieving efficient enrichment via "the large pulling the small". Compared to conventional flotation methods, PTMS ELECTROMAGNETIC SEPARATOR demonstrates over 30% enhanced iron removal efficiency.
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