DOI QR코드

DOI QR Code

The treatment of coolant wastewater of rolling plate process by High Gradient Magnetic Separation

  • 발행 : 2009.11.30

초록

This study introduced wastewater treatment method by High Gradient Magnetic Separation (HGMS). HGMS treatment was high efficient method for various industrial wastewaters. The system is currently research state, but we have surveyed commercialize the technology for industry. In rolling plate process, coolant wastewater was recycled by sedimentation and sand filter system. It needs several large reservoirs and long time to remove suspended solid (SS) like metal fines and iron oxide in hot rolling plate making process. If removing rate of suspended solid in rolling coolant wastewater is improved by using HGMS system, the productivity of working process can be increased and the area of reservoir can be reduced. We manufactured high temperature superconducting HGMS system that had a purpose to treatment of coolant wastewater in rolling plate process. We fabricated the prototypes of magnetic matrix filter consisting of stainless steel 430 mesh, which is a core component in the magnetic separation system, In our basic preliminary experiment using HGMS system, it has been clear that the fine paramagnetic particles in the coolant wastewater obtained from rolling plate process of POSCO can be separated with high efficiency.

키워드

참고문헌

  1. M. Tsuge, J. Yano, E. Shichi, K. Kawashima, and S. matsumoto, "Treatment of cold rolling coolant tbr steel by HGMS", IEEE Trans. on Magnetics, vol. MAG-23, No. 5, pp. 2764-2766, 1987 https://doi.org/10.1109/TMAG.1987.1065358
  2. J. Svoboda, "Development of linear high-gradient magnetic separator", IEEE Trans. on Magnetics, vol. 24, No. 2, pp. 749-752, 1988 https://doi.org/10.1109/20.11333
  3. S. Nishijima and S. Takeda, "Research and development of superconducting high gradient magnetic separation for purification of wastewater from paper factory", IEEE Trans. on Applied Superconductivity, vol. 17, No. 2, pp. 2311-2314, 2007 https://doi.org/10.1109/TASC.2007.898116
  4. Y. Kakihara, T. Fukunishi, S. Takeda, S. Nishijoma, and A. Nakahira, "Superconducting high gradient magnetic separation for purification of wastewater from paper factory", IEEE Trans. on Appl. Supercond., vol. 14, No. 2, pp. 1565-1567, 2004 https://doi.org/10.1109/TASC.2004.830709
  5. H. Okada, Y. Kudo, H. Nakazawa, A. Chiba, K. Mitsuhashi, T. Ohara, and H. Wada, "Removal system of arsenic from geothermal water by high gradient magnetic separation-HGMS reciprocal filter", IEEE Trans. on on Appl. Supercond., vol. 14, No. 2, pp. 1576-1579, 2004 https://doi.org/10.1109/TASC.2004.830718
  6. T. Ohara, T. Watanabe, S. Nishijima, H. Okada, and N. Saho, "Development of magntic separation systems using superconducting magnets", Journal of Appl. Physics of Japan, vol. 71, No. 1, pp. 57-61, 2002
  7. A. Nakahira, S. Nishida, and K. Fukunishi, "Synthesis of magnetic activated carbons for removal of environmental endocrine disrupter using magnetic vector", Journal of the Ceramic Society of Japan, vol. 114, No. l, pp. 135-137, 2006 https://doi.org/10.2109/jcersj.114.135
  8. D.W. Ha, T.H. Kim, H.S. Ha, S,S, Oh, S.K. Park, S.K. Lee, and Y.M. Roh, "Treatment of coolant of hot rolling process by high gradient magnetic separation", IEEE Trans. on Appl. Supercond., vol. 17, No. 2, pp. 2189-2191, 2007 https://doi.org/10.1109/TASC.2007.897742