Ahmet YAMIK, Cengiz KARAGÜZEL, Ata U. AKÇIL, A. Namık GÜNEŞ

Divrigi Hematit Cevherinin Manyetik Kavurma ve Peletleme ile Degerlendirilmesi

Hematit cevherlerinin yuksek alan siddetii manyetik aytrtctlardazenginlestirilmesi bilinen bir yontem olmastna ragmen maliyeti yuksektiroBu cevherlerin manyetik kavurma ile manyetit cevherlerinedonusturulerek dusuk alan siddetli manyetik aytrtctlarda zenginiestirilmesi daha uygun bir yontem olarak gorulmektedir. Bu yontem bilinendiger yontemlere gore daha ekonomik ve son zamanlarda tercih edilenbir yontem olmustur. Divrigi hematit cevheri manyetik kavurma sonucu,dusiik alan siddetli manyetik aytrtctlarda zenginlestirilerek; optimumcaltsma parametreleri tespit edilmistir. %47.06 Fe tenorune sahip tiivenancevherinden, %62.26 Fe tenorlii konsantre %91.23 verimle eldeedilmistir. Elde edilen bu manyetik uriinden endustrinin istedigi ozelliktepelet uretimi gerceklestirilmistir.

Anahtar Kelimeler:

hematit, manyetik kavurma, peletleme

EVALUATION OF HEMATITE ORE BY MAGNETIC ROASTING AND PELLETIZING

High intensity magnetic separation of hematite ores is a wellknownbut an expensive method. In comparison with this traditionalmethod, magnetic concentration of magnetite ore formed after magneticroasting of hematite has been an alternative and reasonable process.Utilization of this process would be more economical than the traditionaltype and therefore, it has been preferred recently. In this process,the aim of the roasting is to increase the magnetic susceptibility ofhematite and thus make it recoverable by a low intensity magnetic separator.Divrigi Hematite ore having 47. 06% Fe of grade was recoveredwith an efficiency of 91.23% and the grade was increased to a level of62.26% Fe. Using the magnetic product obtained ill this process, pelletproduction suitable for the industry was achieved

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Akdag, M., (I984): (In Turkish) Ekstraktif Metalurji, 9 Eyliil University Press, Mining Engineering Dept., Izmir, sf95-101
Cilingir, Y., (1990): (In Turkish) Metalik cevherler ve zenginlestirme Yontemleri, 9 Eyliil University Press, Mining Engineering Dept., izmir, VI, B12.
Ekkehart, M., (1994): Increasing the recovery of valuable mineral in Hematite/ Magnetite ore benefication process, Progress in Mineral Processing Technology, ed.by. Proceedings of the 4th International Mineral Processing Symposium, Cappadocia,.
Kemal, M., (1990): (In Turkish) Aglomerasyon, 9 Eyliil University Press, Mining Engineering Dept., izmir,
Meyer, K., (1980): Pelletizing of Iron Ore, Spiringer-Verlag Berlin Heidelberg New-York Verlag Stahleisen m.b.H., Diisseldorf
Oktern, M.M., (1998): (In Turkish) 1997-98-99 Ytllarmda celik pazarmm temel ozellikleri iizerine notIar, Metal Maden Tiirkiye Ihracatcilar Birl. Derg.,C-7, 45.
Sundberg, R.T., (1998): Wet low intensity magnetic seperation of iron ore, innovation in Mineral and Coal Processing, Atak Onal Celik (ed.), Proceedings of the ih International Mineral Processing Symposium, Istanbul
Weiss, L.N., (1985): SME Mineral Prosessing Handbook 2, American Institute of Mining-Metallurgical and Petroleum Engineers, New York.