한국지구물리탐사학회:학술대회논문집
- 한국지구물리탐사학회 2003년도 Proceedings of the international symposium on the fusion technology
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- Pages.637-641
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- 2003
Recovery of abrasives from electrical industry sludge
- Cho Sung-Baek (Mineral and Materials Processing Division, Korea Institute of Geoscience and Mineral Resources) ;
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Kim Sang-Bae
(Mineral and Materials Processing Division, Korea Institute of Geoscience and Mineral Resources) ;
- Cho Keon-Joon (Mineral and Materials Processing Division, Korea Institute of Geoscience and Mineral Resources)
- 발행 : 2003.11.01
초록
Abrasive powders were recovered from electrical industry sludge by simple physical separation for their recycling. The raw electrical industry sludge was filter pressed, dried, dispersed and then classified by air classifier at various conditions. The three kinds of particles with different particle size distribution were classified by controlling rotor speed and air volumes of the classifier. The recovered abrasive powders, which are classified at 5,000,9000 and 13,000 rpm of rotor speed, are almost same properties to raw pumice, garnet and rouge powders, respectively. The results of particle size analysis, X-ray diffraction and SEM observation show that the recovered powders can be reused as an abrasive powders.