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| Influence of Basicity on Microstructure of Sinter Using Sijiaying Ore Fines |
| LIU Li-na1,HAN Xiu-li1,2,LI Chang-cun 1,2,LI Jie3 |
1. College of Mineral Engineering, Hebei United University, Tangshan 063009, Hebei， China
2. Mining Development and Safety Technology Key Lab of Hebei Province, Tangshan 063009, Hebei， China
3. College of Metallurgical and Energy, Hebei United University, Tangshan 063009, Hebei， China |
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Abstract The microstructure and metallurgical properties of different basicity of sinter using sijiaying ore fines were investigated by means of polarization microscope. The result shows that: with increase of the basicity of sinter, the content of calcium ferrite is increased obviously, the contents of magnetite, hematite and glassiness are reduced. The microstructure is transformed from porphyritic-granular to interweaving corroded. The shape of magnetie is changed from idiomorphic, hypautomorphic to xenomorphic, the shape of hematite is changed from diamond to xenomorphic, the shape of calcium ferrite is changed from xenotopic and stylolitic to acerous. The drum strength, RDI and reducing property of sinter are improved.
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Received: 04 January 2011
Published: 01 November 2011
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2011, Vol. 46 
