Reducing the self-heating of sulphides by chemical treatment with lignosulfonates

Rosenblum, Frank; Nesset, Jan E.; Moon, Seung Hwan; Finch, J.A.; Waters, Kristian E.

doi:10.1016/j.mineng.2016.10.026

Cited by 5 publications

(1 citation statement)

References 9 publications

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“…Once the self-heating of sulfide ores occurs, the spontaneous combustion fire will occur when the temperature of ore heap reaches the ignition point of ore. e prevention and control on spontaneous combustion of sulfide ores are always the main safety problem for sulfide ore deposits. It is very important to exactly measure the spontaneous combustion tendency of sulfide ores in order to protect the safety of miners' life, maintain the normal production of mine, and make good utilization of the natural resources [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Determination Method for Self-Heating Initiative Temperature of Sulfide Ores

et al. 2020

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The purpose of this article is to explore a new method to determine the self-heating initiative temperature of sulfide ores for preventing spontaneous combustion of sulfide ores. Two typical ore samples with self-heating characteristics are studied by wavelet transform, recursive graph analysis, Hurst index extraction, and approximate entropy detection. On this basis, self-heating initiative temperature of sulfide ores was measured. The results indicate that the Hurst index of both ore samples in the experiment is greater than 0.5; moreover, the Hurst index in the later period of the experiment is greater than that of the earlier period. The self-heating of sulfide ores is an unsteady process with positive persistence and obvious mutation, so the possibility of self-heating of sulfide ores can be determined according to the change characteristics of Hurst index. The mutation times of the two samples are 864 min and 819 min, respectively, reference values of self-heating initiative temperature are 219.4°C and 232.3°C, and the average relative error is only 1.49%, which are in good agreement with the measured values, and therefore, it provides basis for safety production of high-sulfur ore mine.

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Section: Introductionmentioning

confidence: 99%