EVALUATION OF HEMATITE ORE BY MAGNETIC ROASTING AND PELLETIZING

Abstract

High intensity magnetic separation of hematite ores is a wellknown

but an expensive method. In comparison with this traditional

method, magnetic concentration of magnetite ore formed after magnetic

roasting of hematite has been an alternative and reasonable process.

Utilization of this process would be more economical than the traditional

type and therefore, it has been preferred recently. In this process,

the aim of the roasting is to increase the magnetic susceptibility of

hematite and thus make it recoverable by a low intensity magnetic separator.

Divrigi Hematite ore having 47. 06% Fe of grade was recovered

with an efficiency of 91.23% and the grade was increased to a level of

62.26% Fe. Using the magnetic product obtained ill this process, pellet

production suitable for the industry was achieved

Divrigi Hematit Cevherinin Manyetik Kavurma ve Peletleme ile Degerlendirilmesi

Abstract

Hematit cevherlerinin yuksek alan siddetii manyetik aytrtctlarda

zenginlestirilmesi bilinen bir yontem olmastna ragmen maliyeti yuksektiro

Bu cevherlerin manyetik kavurma ile manyetit cevherlerine

donusturulerek dusuk alan siddetli manyetik aytrtctlarda zenginiestirilmesi daha uygun bir yontem olarak gorulmektedir. Bu yontem bilinen

diger yontemlere gore daha ekonomik ve son zamanlarda tercih edilen

bir yontem olmustur. Divrigi hematit cevheri manyetik kavurma sonucu,

dusiik alan siddetli manyetik aytrtctlarda zenginlestirilerek; optimum

caltsma parametreleri tespit edilmistir. %47.06 Fe tenorune sahip tiivenan

cevherinden, %62.26 Fe tenorlii konsantre %91.23 verimle elde

edilmistir. Elde edilen bu manyetik uriinden endustrinin istedigi ozellikte

pelet uretimi gerceklestirilmistir.

Keywords

• hematit,manyetik kavurma,peletleme

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