Basic characteristics of Australian iron ore concentrate and its effects on sinter properties during the high-limonite sintering process

Dong-hui Liu; Hao Liu; Jian-liang Zhang; Zheng-jian Liu; Xun Xue; Guang-wei Wang; Qing-feng Kang

doi:10.1007/s12613-017-1487-1

Volume 24 Issue 9

Sep. 2017

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2017 > 24(9): 991-998

Dong-hui Liu, Hao Liu, Jian-liang Zhang, Zheng-jian Liu, Xun Xue, Guang-wei Wang, and Qing-feng Kang, Basic characteristics of Australian iron ore concentrate and its effects on sinter properties during the high-limonite sintering process, Int. J. Miner. Metall. Mater., 24(2017), No. 9, pp. 991-998. https://doi.org/10.1007/s12613-017-1487-1

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Dong-hui Liu, Hao Liu, Jian-liang Zhang, Zheng-jian Liu, Xun Xue, Guang-wei Wang, and Qing-feng Kang, Basic characteristics of Australian iron ore concentrate and its effects on sinter properties during the high-limonite sintering process, Int. J. Miner. Metall. Mater., 24(2017), No. 9, pp. 991-998. https://doi.org/10.1007/s12613-017-1487-1

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Basic characteristics of Australian iron ore concentrate and its effects on sinter properties during the high-limonite sintering process

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Corresponding author:
Jian-liang Zhang E-mail: zhang.jianliang@hotmail.com
Received: 23 March 2017; Revised: 3 May 2017; Accepted: 5 May 2017

Abstract

Abstract

The basic characteristics of Australian iron ore concentrate (Ore-A) and its effects on sinter properties during a high-limonite sintering process were studied using micro-sinter and sinter pot methods. The results show that the Ore-A exhibits good granulation properties, strong liquid flow capability, high bonding phase strength and crystal strength, but poor assimilability. With increasing Ore-A ratio, the tumbler index and the reduction index (RI) of the sinter first increase and then decrease, whereas the softening interval (∆T) and the softening start temperature (T_10%) of the sinter exhibit the opposite behavior; the reduction degradation index (RDI_+3.15) of the sinter increases linearly, but the sinter yield exhibits no obvious effects. With increasing Ore-A ratio, the distribution and crystallization of the minerals are improved, the main bonding phase first changes from silico-ferrite of calcium and aluminum (SFCA) to kirschsteinite, silicate, and SFCA and then transforms to 2CaO·SiO₂ and SFCA. Given the utilization of Ore-A and the improvement of the sinter properties, the Ore-A ratio in the high-limonite sintering process is suggested to be controlled at approximately 6wt%.
- iron ore concentrate;
- limonite;
- basic characteristics;
- sinter properties;
- sintering process

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