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| PREPARATION AND PARTICLE-SIZE MEASUREMENT OF ULTRA-FINE TOURMALINE POWDER |
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Received:August 20, 2006
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| DOI： |
| KeyWord:tourmaline, ultra-fine grinding, jet mill, stirred ball mill; particle size |
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| Beijing General Research Instiute of Mining and Metallurgy , BeijinglO0044, China |
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| 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. |
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