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Purification and processing of kaolin by PTMS magnetic separator
published date: 2022/3/13

magnetic separation diagram

PTMS magnetic separator kaolin processing technology with the nature of raw ore, product use and product quality requirements are different. In general, the processing techniques of kaolin include purification and whitening, ultra-fine processing and modification.

PTMS magnetic separator

1, the purification of
The main minerals of kaolinite are kaolinite and polyhydrated kaolinite. In addition to kaolinite family minerals, there are also clay minerals such as montmorillonite, illite and pyrophyllite, as well as non-clay minerals such as quartz, feldspar, iron minerals and titanium minerals and organic matter. PTMS magnetic separator can produce kaolin products which can meet the needs of various industrial fields. Physical method, chemical method and high temperature calcination method are often used to purify and remove impurities from kaolin.

what is magnetic separation in chemistry?

Physical purification method mainly uses the difference of physical properties of different minerals such as particle size, density, magnetism and surface adsorption to separate some non-clay minerals, including hand separation method, water separation method, flotation method and magnetic separation. Chemical purification and bleaching are mainly used to remove iron minerals in kaolin. The main methods are acid leaching, chlorination, alkali treatment, reduction, oxidation and REDOX combined method. High temperature calcination is the best method to remove carbon and whiten, and it is also a necessary processing method for kaolin in coal measure strata. Usually calcined at 650 ~ 1050℃, the kaolin phase completely changed, while some impurities volatilized, to improve the whiteness and insulation effect. Sometimes, high temperature treatment methods such as chlorination roasting and oxidation roasting can be used to remove iron and titanium elements in kaolin. PTMS magnetic separator can improve product whiteness.
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