Manufacturing method of ultra fine talc powder

摘要

The present invention relates to a method for producing ultra-fine talc powder that effectively solves problems such as agglomeration and changes in the characteristics of the powder surface in the milling process of talc in a rotary mill by a dry method, and more particularly, talc raw mineral. By appropriately using the grinding aid according to the characteristics of the grinding, improve the grinding efficiency, saving the grinding energy, maximizing the workability and productivity of the grinder, preventing the change of the surface characteristics of the talc fine powder or coating the surface thereof The present invention relates to a method for producing ultra-fine talcum powder, which can effectively produce high value-added talc powder, which is used as a raw material for engineering plastics, pharmaceuticals, cosmetics, and paint industry.;In the present invention, stearic acid is added in an appropriate amount at any time by using 0.5 to 1.2 wt% of the powder weight as a grinding aid during the crushing of talc ore, thereby shortening the grinding time and reducing the surface of the talc powder. There is a characteristic in that it is coated to improve hydrophobicity.