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PTMS magnetic separation Iron removal solves the advantages and disadvantages of kaolin whiteness method
published date: 2024/6/30

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Using thiourea reinforced reduction bleaching kaolin process, mainly sodium sulfate and thiourea as auxiliary reducing agent, under normal temperature catalytic conditions, the kaolin combined strengthening bleaching, shielding reaction and complexation reaction, PTMS magnetic separation in iron to solve the problem of kaolin bleaching yellowing, make kaolin products calcination white above 90%, but there are complex operation, a large number of chemical reagents to treat bleaching waste liquid cost high shortcomings.

PTMS magnetic separation


PTMS magnetic separation Physical iron removal method is relatively common, easy to operate, low cost, but the efficiency of iron removal is low. Calcination whitening method: the preparation method of ulafine high whiteness calcination kaolin, adding whitening agent in the spray dried kaolin calcination in the rotary kiln, can improve the calcination whiteness of kaolin in Fujian region to 94.1%;

what is magnetic separation in chemistry?


The mixture composed of cleaned coal, sodium sulfate and ammonium chloride according to the weight ratio of 10:0.3:0.2 is used as whitening agent, the kaolin superfine powder to 4500 orders, the amount of whitening agent is 3%, PTMS magnetic separation the content of iron kaolin can reach more than 90%. The method of adding whitening agent has some disadvantages, such as high energy consumption, incomplete removal of impurities, serious environmental pollution, corrosion of equipment and air pollution.
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QUARTZ PTMS magnetic separation 20240630

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