Preparation and Performance-measurement of Ultra-fine Tourmaline Powder
Tourmaline has the characteristics of piezoelectricity,thermoelectricity,spontaneous polarization and far-off infrared radiations.Ultra-fine powders of tourmaline have extensive applications in the fields of electron,chemical and environment protection,as well as health protection.The preparation technology of ultra-fine tourmaline powder is discussed.The key equipment of a pilot plant for producing ultra-fine tourmaline powder with jet mill and stirred ball mill is described.Using this pilot plant facility it is possible to produce tourmaline powder with particle size smaller than 100 nm,and a continuous production process can be realized.The final powder product has many superior performance such as high whiteness and large specific surface area,and its a negative ions emission can reach the value of 7190 ions per cubic centimeter.
Tourmaline Ultra-fine grinding Jet mill Stirred ball mill Particle size Negative ion
Z.F.Hu C.Y.Sun
Department of Environmental Engineering,University of Science and Technology Beijing,Beijing,China B Beijing General Research Institute of Mining & Metallurgy,Beijing,China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
3330-3335
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）