What is talc?
Talc is one kind of mineral formed by hydrothermal alteration. Magnesium-rich minerals usually become talc after hydrothermal alteration. Talc is common silicate mineral. Since talc is ultimately used in powder form, fine grinding is a necessary process for talc. The Mohs hardness of talc is 1, so it is easier to grind. Fine-grinding equipment of talc would be mentioned beblow:
Ultra-fine talc powder with mesh over 325 is one of the ultra-fine powders with largest application worldwide, it is widely used in paper-making, plastics, rubber, paints and coatings, cosmetics and ceramics.
Equipment used for fine grinding of talc
At present, the processing of ultra-fine talc mainly adopts dry processing. The equipment of dry processing mainly includes: impact mill, jet mill, vibration mill, roller mill and ball mill.
The procedure of fine-grinding of talc
In short, the processing procedure is: talc block – coarse crushing – drying – medium crushing – fine grinding – ultra-fine grinding – cyclone aggregation – packaging. Specifically, the procedure is as follows: first, pre-crush talc stone through coarse crushing, then send crushed talc to vertical dryer via bucket elevator. Next, crush the dried feed by hammer crusher, after crushing, send ground feed to Raymond mill for find-grinding. Next, ultra-fine grinding of ground powder by roller mill, ball mill or jet mill. The final product fineness can reach 500-5000 mesh (d97=30-5um). After ultra-fine grinding, the talc powder are classified by classifier and finally collected through cyclone collector.
Studies have shown that there are several changes of talc powder after ultra-fine grinding, besides visible change on particle size, the specific surface area increases, the whiteness improves, and the activity of the powder improves significantly. Ultra-fine grinding is an important deep processing method for non-metallic mineral materials. Selecting suitable grinding equipment is crucial to improve processing efficiency and product quality.
Summary
Studies have shown that there are several changes of talc powder after ultra-fine grinding, besides visible change on particle size, the specific surface area increases, the whiteness improves, and the activity of the powder improves significantly. Ultra-fine grinding is an important deep processing method for non-metallic mineral materials. Selecting suitable grinding equipment is crucial to improve processing efficiency and product quality.
Qingdao Epic Powder Machinery Co., Ltd. is a professional manufacturer of powder processing equipment. The products include: jet mill, ball mill, vibration mill, roller mill, various classifiers, surface coating modifiers and related auxiliary equipment, such as dust collector. Qingdao Epic has always adhered to the principle of reliable quality, low price, first-class after-sales service, and the concept of one customer one design. Ball mill from Qingdao Epic can be well used in grinding talc powder. It can be combined with single classifier or multiple classifiers for classifying powders with different fineness. The ball mill-classifier production line is advanced processing line for non-mineral powders. It has high reputation among customers both home and abroad.
If you have related demands or questions, contact staff of Qingdao Epic directly, they are always at your service.
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