Grate-kiln pelletization of Indian hematite fines and its industrial practice

  • De-qing Zhu
  • Feng Zhang
  • Zheng-qi Guo
  • Jian Pan
  • Wei Yu
Article
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Abstract

Indian hematite fines normally have a high iron grade and minor impurities; they are usually used as sinter fines for feeding into a blast furnace. In this work, the grindability properties of two kinds of Indian hematite fines and the roasting behaviors and induration characteristics of pellets made from these fines were revealed through experiments involving dry ball milling and small-scale and pilot-scale tests. In addition, the microstructures of the particles of ground India hematite fines and fired pellets were investigated using optical microscopy. On the basis of the results, a grate-kiln production line with an annual output of 1.2 Mt of oxidized pellets was established in India. This pellet plant operates stably and reliably, further confirming that preparing high-quality pellets with Indian hematite fines pretreated by dry ball milling is an industrially feasible process.

Keywords

hematite pelletizing industrial practice 

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Notes

Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (No. 51474161) and the Hunan Provincial Co-innovation Center for Clean and Efficient Utilization of Strategic Metal Mineral Resources.

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Copyright information

© University of Science and Technology Beijing and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • De-qing Zhu
    • 1
  • Feng Zhang
    • 1
  • Zheng-qi Guo
    • 1
  • Jian Pan
    • 1
  • Wei Yu
    • 2
  1. 1.School of Minerals Processing and BioengineeringCentral South UniversityChangshaChina
  2. 2.Institution of Resources StrategyWuhan Iron and Steel CorporationWuhanChina

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