Detection of the assimilation characteristics of iron ores: Dynamic resistance measurements

Li-xin Qian; Tie-jun Chun; Hong-ming Long; Qing-min Meng

doi:10.1007/s12613-019-1869-7

Volume 27 Issue 1

Jan. 2020

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2020 > 27(1): 18-25

Li-xin Qian, Tie-jun Chun, Hong-ming Long, and Qing-min Meng, Detection of the assimilation characteristics of iron ores: Dynamic resistance measurements, Int. J. Miner. Metall. Mater., 27(2020), No. 1, pp. 18-25. https://doi.org/10.1007/s12613-019-1869-7

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Li-xin Qian, Tie-jun Chun, Hong-ming Long, and Qing-min Meng, Detection of the assimilation characteristics of iron ores: Dynamic resistance measurements, Int. J. Miner. Metall. Mater., 27(2020), No. 1, pp. 18-25. https://doi.org/10.1007/s12613-019-1869-7

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Research Article

Detection of the assimilation characteristics of iron ores: Dynamic resistance measurements

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Corresponding authors:
Tie-jun Chun E-mail: springcsu@126.com

Hong-ming Long E-mail: yaflhm@126.com
Received: 23 February 2019; Revised: 23 April 2019; Accepted: 31 May 2019; Available online: 17 December 2019

Abstract

Abstract

Resistance in iron ore undergoes a sharp change of up to several orders of magnitude when the sintered solid phase changes to liquid phase. In view of the insufficiency of existing assimilation detection methods, a timing-of-assimilation reaction is proposed, which was judged by continuously detecting the changes in resistance at the reaction interface. Effects of pole position and additional amounts of iron ore on assimilation reaction timing were investigated. The results showed that the suitable depth of pole groove was about 2 mm, and there was no obvious impact when the distance of the poles changed from 4 to 6 mm, or the amount of iron ore changed from 0.4 to 0.6 g. The temperature of sudden change of resistance in the temperature-resistant image was considered to be the lowest assimilation temperature of iron ore. The accuracy of this resistance method was clarified by X-ray diffraction, optical microscope, and scanning electron microscope/energy dispersive spectrometer (SEM/EDS) analyses.
- iron ore sintering;
- assimilation characteristic;
- resistance method;
- interface

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