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

De-qing Zhu; Feng Zhang; Zheng-qi Guo; Jian Pan; Wei Yu

doi:10.1007/s12613-017-1428-z

Volume 24 Issue 5

May 2017

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2017 > 24(5): 473-485

De-qing Zhu, Feng Zhang, Zheng-qi Guo, Jian Pan, and Wei Yu, Grate-kiln pelletization of Indian hematite fines and its industrial practice, Int. J. Miner. Metall. Mater., 24(2017), No. 5, pp. 473-485. https://doi.org/10.1007/s12613-017-1428-z

Cite this article as:

De-qing Zhu, Feng Zhang, Zheng-qi Guo, Jian Pan, and Wei Yu, Grate-kiln pelletization of Indian hematite fines and its industrial practice, Int. J. Miner. Metall. Mater., 24(2017), No. 5, pp. 473-485. https://doi.org/10.1007/s12613-017-1428-z

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Research Article

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

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Corresponding author:
Zheng-qi Guo E-mail: gzqcsu@126.com
Received: 25 September 2016; Revised: 22 December 2016; Accepted: 26 December 2016

Abstract

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.
- hematite;
- pelletizing;
- industrial practice

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References

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