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Advantages Of Vertical Ring High Gradient PTMS Magnetic Separator In The Purification Of Kaolin
Время: 2021-01-17

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For the purpose of purification of kaolin is removal of iron ore, titanium minerals and organic matter content and other harmful impurities, dyeing in order to improve the whiteness of the product, or removal of quartz, feldspar, such as sand mineral, raise the quality of kaolin products, to extend the breadth and depth of the application, obtain better economic benefit, and make full use of kaolin resources. The current purification processes mainly include gravity separation, magnetic separation, flotation, leaching, chemical bleaching and roasting. Gravity separation is mainly used to remove impurities such as organic matter, feldspar and quartz. Magnetic separation is mainly used to remove weak magnetic impurities such as hematite, pyrite and limonite. Flotation is mainly used to treat kaolin raw ore with more impurities and lower whiteness. Leaching is mainly used for iron reduction purification of low grade kaolin. Chemical bleaching is mainly used for further purification of kaolin concentrate to obtain high quality kaolin. Calcination is mostly used to remove carbon in coal measures kaolin, and metal impurities can also be removed by magnetization roasting, chlorination roasting and other processes. However, it is difficult to obtain high quality kaolin products by single purification process, especially for low grade kaolin with large reserves of coal measures.

Vertical ring high gradient PTMS magnetic separator, as a kind of high performance magnetic separation equipment, has been used in the production of kaolin purification. The old vertical ring high gradient magnetic separator is improved, the best speed of the drum is controlled by frequency conversion, and the fine magnetic medium and stainless steel parts are used to avoid secondary pollution. After the new vertical ring high gradient PTMS magnetic separator treatment, the content of Fe2O3 in the product is less than 0.5%, and the whiteness of the calcined product can be increased to 93%, achieving a better purification effect. At present, a magnetic separator with high magnetic induction intensity suitable for non-metallic impurity removal has been developed. With the development of magnetic separation technology and the update of equipment, the magnetic separation purification process of kaolin will achieve better results.

Which metal cannot be separated by magnetic separation?

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