고구배 자력선별기에 의한 석탄비산회로부터 철분의 회수

이흥길; 이철태

Journal of the Korean Industrial and Engineering Chemistry, Vol.6, No.4, 601-609, August, 1995

Export Citation

고구배 자력선별기에 의한 석탄비산회로부터 철분의 회수

Recovery of Fe Fraction from Coal Fly Ash by Using High Gradient Magnetic Separator

이흥길, 이철태

초록

본 연구는 고구배 자력선별기에 의한 석탄비산회중의 철분 회수가능성을 조사하기 위하여 수행되었다. 자기장의 세기, 매트릭스의 형태, 슬러리의 유량, 광액농소가 회수되는 철분중의 Fe 함량에 미치는 영향을 조사하였다 또한 철분의 품위를 향상시키기 위하여 반복자선을 실시하여 자선횟수에 따른 철분 중의 Fe 함량을 조사하였다. 그 결과 적정조건은 자기장 3200G, 슬러리의 유량 83cm³/sec, 강자성의 스크린형 매트릭스 및 광액농도 20%이었고, 이 적정조건에서 5회의 반복자선을 통해 석탄 비산회로부터 회수한 철분은 magnetite 형태이며, Fe 함량은 Fe₂O₃로 63.25%이었다.

This study was carried out to test the feasibility for the separation of Fe fraction from the coal fly ash by the magnetic separation using high gradient magnetic separator. Effects of some variables such as, strength of magnetic filed, shape of matrix, flow rate of fly ash slurry and pulp density on the separation of Fe fraction were investigated. And also multistage separation was attempted to raise content of Fe fraction. The optimum condition was magnetic field of 3200G, slurry flow rate of 83㎤/sec, matrix of ferromagnetic screen type and pulp density of 20%. Through 5times treatment under this optimum condition magnetite could be recovered from coal fly ash and its Fe content was63.25 % as Fe₂O₃.

[References]

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최원길, 한국폐기물학회지, 10, 463 (1993)
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Gillian TM, Canon RM, Proceedings of the 15th Intersociety Energy Conversion Engineering Conference, 2, 970 (1980)
Kelmers AD, Symposium on Resource REcovery and Environmental Issues of Industrial Solid Wastes, Gatlinburg, Tennessee (1981)
Padilla R, Sohn HY, Metall. Trans. B, 16B, 707 (1985)
Murtha MJ, Burnet G, Proc. Iowa Acad. Sci., 83, 125 (1976)
Lofthouse CH, IEEE Trans. Magn., 17, 3302 (1981)
Dobby GS, Kelland DR, IEEE Trans. Magn., 18, 1698 (1982)
Petrakis L, Ahner PF, IEEE Trans. Magn., 14, 491 (1978)
Watson JHP, Atkinson G, IEEE Trans. Magn., 16, 790 (1981)
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KS E3716
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Bever MB, "Encyclopedia of Materials Science and Engineering," 3, 2443, Pergamon Press, Oxford (1986)

[1] 변근주, 제 3회 Fly Ash 기술세미나 자료, 6 (1991)

[2] 최원길, 한국폐기물학회지, 10, 463 (1993)

[3] Decarlo VA, ORNL/TM-6126 (1978)

[4] Gillian TM, Canon RM, Proceedings of the 15th Intersociety Energy Conversion Engineering Conference, 2, 970 (1980)

[5] Kelmers AD, Symposium on Resource REcovery and Environmental Issues of Industrial Solid Wastes, Gatlinburg, Tennessee (1981)

[6] Padilla R, Sohn HY, Metall. Trans. B, 16B, 707 (1985)

[7] Murtha MJ, Burnet G, Proc. Iowa Acad. Sci., 83, 125 (1976)

[8] Lofthouse CH, IEEE Trans. Magn., 17, 3302 (1981)

[9] Dobby GS, Kelland DR, IEEE Trans. Magn., 18, 1698 (1982)

[10] Petrakis L, Ahner PF, IEEE Trans. Magn., 14, 491 (1978)

[11] Watson JHP, Atkinson G, IEEE Trans. Magn., 16, 790 (1981)

[12] Oberteuffer JA, IEEE Trans. Magn., 10, 223 (1974)

[13] KS E3716

[14] Lide DR, "Handbook of Chemistry and Physics," 71st ed., 9-14, CRC Press, Boston (1990)

[15] Bever MB, "Encyclopedia of Materials Science and Engineering," 3, 2443, Pergamon Press, Oxford (1986)