Magnetic separator

PTMS magnetic separation oxidation method is to use strong oxidant to oxidize the iron impurities (pyrite, etc.) in the reducing state of kaolin into ferrous ions soluble in water, and then filter and wash away. The oxidation method only has a good effect on removing iron impurities in the form of pyrite in kaolin. In addition, the iron removal process is also affected by many factors such as pH value of the medium, ore characteristics, pulp concentration, temperature, dosage of chemicals, so it can not be widely used.

PTMS magnetic separation

The most commonly used oxidant in industry is sodium hypochlorite, ferrous iron is stable under acidic conditions, but under alkaline conditions (pH greater than 8.8) can be converted into refractory trivalent iron; At the same time, sodium hypochlorite has the highest activity and the strongest oxidation capacity under weak acidic conditions (pH 5 ~ 6), so PTMS magnetic separation oxidation bleaching should be controlled under weak acidic conditions.

what is magnetic separation in science?

Most kaolin ores contain divalent and trivalent iron minerals at the same time, and it is not easy to achieve good iron removal effect by oxidation or reduction method only. PTMS magnetic separation oxidation-reduction method is usually used. That is, the oxidizing agent is first used to oxidize the bivalent iron to the trivalent iron, and then the reducing agent is used to reduce the trivalent iron to the soluble bivalent iron, and then removed.
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