PTMS magnetic separation Chemical bleaching method is usually used for kaolin concentrate that needs further purification after impurity removal. It works like giving kaolin a "whitening bath" to further improve its whiteness. Chemical bleaching method commonly used bleaching agents are hydrogen peroxide, sodium hypochlorite and so on. These bleach are highly oxidized and can oxidize impurities in kaolin into soluble substances.
In the actual PTMS magnetic separation chemical bleaching operation, the kaolin is mixed with the bleach solution and reacted under appropriate conditions. The impurities are oxidized and dissolved in the solution, and then the solution is removed by multiple washes, so as to achieve the purpose of kaolin purification. However, this method is relatively expensive because bleach is relatively expensive and the reaction process requires a certain amount of energy and time.
PTMS magnetic separation Chemical bleaching method roasting purification method is to remove iron impurities, carbon impurities, sulfide and other impurities in kaolin by high temperature roasting. This method is like a "high temperature baptism" for kaolin, which can greatly increase the whiteness of kaolin.
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