Microwave Energy for Expanding Perlite Ore

被引：0
|
作者：
Aguilar-Garib, J. A. [1 ,2 ]
Garcia-Onofre, V. [1 ]
Ortiz, U. [1 ,2 ]
Valdez-Nava, Zarel [1 ]
机构：
[1] Univ Autonoma Nuevo Leon, Fac Ingn Mecan & Elect, San Nicolas De Los Garza, NL, Mexico
[2] Univ Autonoma Nuevo Leon, Ctr Invest Innovac & Desarrollo Ciencia & Tecnol, Apodaca, NL, Mexico
来源：
JOURNAL OF APPLIED RESEARCH AND TECHNOLOGY | 2013年 / 11卷
关键词：
Microwaves; perlite; expansion; heating; EXPANSION;
D O I：
10.1016/S1665-6423(13)71588-8
中图分类号：
学科分类号：
摘要：
Perlite is an igneous mineral composed by silicon, aluminum, oxygen and water. It can be expanded by heating it up at temperatures above 870 degrees C, then it becomes plastic, and the steam formed inside pressures out of the mineral. Maximum expansion is possible if the particles are heated up quickly, since the expansion degree strongly depends on the remaining water in the particles at the time that they reach the temperature where they become plastic. The typical expansion process consist in pouring the particles in rotary kilns operated with natural gas, but it is proposed in this research that the particles can be heated quickly with microwaves at 2.45 GHz. Particles of 0.08 cm and 0.018 cm of average diameter were expanded 10 to 20 times.
引用
收藏
页码：823 / 830
页数：8
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