Effects of mechanical activation on the carbothermal reduction of chromite with metallurgical coke

Year 2010, Volume: 14 Issue: 1, 33 - 38, 01.06.2010

Kenan Yıldız

Abstract

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Keywords

carbothermal reduction, chromite, ferrochromium, mechanical activation

Kromitin metalurjik kokla karbotermal redüksiyonuna mekanik aktivasyonun etkisi

Abstract

The carbothermal reduction of mechanically activated chromite with metallurgical coke under an argon atmosphere was investigated at temperatures between 1100 and 1400°C and the effects of the mechanical activation on chromite structure were analyzed by x-ray diffraction (XRD) and scanning electron microscopy (SEM). An increase in specific surface area resulted in more contact points. The activation procedure led to amorphization and structural disordering in chromite and accelerated the degree of reduction and metalization in the mixture of chromite and metallurgical coke. Carbothermal reduction products were analzed by using scanning electron microscopy (SEM/EDS).

Keywords

karbotermal redüksiyon, kromit, ferrokrom, mekanik aktivasyon

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