Preparation and particle-size measurement of ultra-fine tourmaline powder

TLDR: In this article, a pilot plant to produce ultra-fine tourmaline powder with jet mill and stirred ball mill is described, and a continuous production process can be realized with particle size less than 100nm.

Abstract: Tourmaline has the characteristics of releasing thermions,far-off infrared radiations and negative ions of oxygen.Ultra-fine powders of tourmaline have extensive applications in the fields of spin and weave,pigment and paint,as well as water purification.The preparation technology of ultra-fine tourmaline powder is discussed.The key equipment of a pilot plant to produce ultra-fine tourmaline powder with jet mill and stirred ball mill is described.Using this pilot plant facility we can produce tourmaline powder with particle size less than 100nm,and a continuous production process can be realized.