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 from China is a professional powder machinery manufacturer. Molino de bolas, molino de rodillos and jet mill from Qingdao Epic can be well used in grinding talc powder. In particular, the ball mill, adopting international advanced production technology, is an excellent choice for processing non-metallic minerals. It can be combined with classifier to form a production line, with high grinding efficiency and low energy consumption. The ball mill has high reputation among customers both home and abroad. If you have related demands or questions, contact Qingdao Epic directly.
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