Effect of Sodium Sulfate Addition on the Production of Ferronickel from Lateritic Ore |
| T.T. Parlak and K. Yıldız
Sakarya University, Faculty of Engineering, Department of Metallurgical and Materials Engineering, Esentepe Campus, Sakarya 54187, Turkey |
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| Lateritic nickel ore from Manisa - Çaldağ region was roasted to form: ferronickel at 1200°C for 1 h with additions of metallurgical coke and sodium sulfate varying by weight 5-15% and 0-20%, respectively. Formed metallic part of roasted sample was separated from non-metallic part by magnet and examined by means of X-ray diffraction analysis and scanning electron microscopy. In spite of kamacite α-(Fe,Ni) formation, iron-rich silicate structure that causes iron losses was observed for samples roasted with only coke. Kamacite formation increased with increment of the coke percentage but iron-rich silicate structure remained almost same. With addition of sodium sulfate, elimination of iron-rich silicate phase was achieved and easily magnetizable metallic particles were obtained. |
DOI: 10.12693/APhysPolA.129.431 PACS numbers: 88.10.jn |