usage experience of Hi-Manganese Iron Ore in iron ore sintering. Decrease in sintering speed has been observed. Product Fracture strength decreases.
Probably, manganese oxide is more thermodynamically stable and could distribute at the iron ore particle boundaries to inhibit atomic diffusion so that the bonding strength of the iron ore particles (or grains) is worsened. This may cause the decrease of the sintering kinetics and mechancial properties.
Refer this link:http://link.springer.com/article/10.1007/s11663-000-0154-4#page-1
Refer this link:http://journals.lww.com/soilsci/Citation/1947/04000/A_CRITICAL_EXAMINATION_OF_A_RAPID_METHOD_FOR.1.aspx
Refer this link:http://www.sciencedirect.com/science/article/pii/S0016236103004071
Mr. Xing Gong is completely right. Additionally, You can estimate proper sintering conditions by using Ellingham-Richardson diagrams – it will tell you what conditions you should set to reduce each oxide.Probably, you will need more reductive atmosphere and/or higher sintering temperature.
The present of manganese oxide in iron ore lead to converted its to MnO and MnO react to sulpehue to form manganese sulphid which very bad to steel there for try decrease the manganese oxide in iron ore before sintering operation
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