water cooling electromagnetic separator for Feldspar

At present, there are three common chemical iron removal methods for kaolin PTMS magnetic separation: oxidation method, reduction method and Sinico-reduction combined method, among which reduction method is the most widely used. The specific method of adaptation depends on the type of iron minerals contained in kaolin. When the dosage of reagent is constant, the bleaching effect of iron removal decreases with the decrease of pulp concentration.

PTMS magnetic separation

If the concentration is too high, because the product is not washed, too many residual pharmaceutical ions after filtration will also affect the product performance. Effect of bleaching time. The longer the PTMS magnetic separation time, the better the effect of iron removal, the reaction speed is very fast at the beginning, and then more and more slow, reasonable and economic bleaching time needs to be determined through the test.

what is magnetic separation in science？

Kaolin PTMS magnetic separation reduction in addition to iron the most commonly used agent is sodium disulfite, industrial also known as insurance powder, its molecular formula is Na2S2O4, is a strong reducing agent, the oxide of trivalent iron present in kaolin is insoluble in water, also insoluble in dilute acid, but under the condition of the presence of insurance powder, The trivalent iron in iron oxide can be reduced to bivalent iron. Since iron is soluble in water, it can be removed by filtration and washing. The main reactions of this process are as follows:
Fe2O3+Na2SO4+H2S2O4=Na2SO4+2FeSO3+H2O

Contact: DELLA
Mob: +86-13929907491
sales@powtechina.com