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Thermal stability investigation of sulfide minerals in DSC

Citation

Iliyas, A and Hawboldt, K and Khan, F, Thermal stability investigation of sulfide minerals in DSC, Journal of Hazardous Materials, 178, (1-3) pp. 814-822. ISSN 0304-3894 (2010) [Refereed Article]

DOI: doi:10.1016/j.jhazmat.2010.01.149

Abstract

The safe mining of sulfide ores requires knowledge of the stability/reactivity of the ores under a variety of conditions. This is a large part due to the oxidative self-heating behavior of these ores. In this study, an advanced kinetic simulation approach was used to evaluate the oxidative self-heating of sulfide-mineral concentrate. Kinetic parameters were determined on the basis of non-isothermal DSC measurements at different heating rates by Friedman and ASTM-E698 methods. The estimated kinetic parameters were employed to predict reaction progress under different temperature regimes. The calculated and experimental isothermal profiles suggest an autocatalytic behavior for mineral concentrate oxidation. The precise prediction of reaction rates/progress by an advanced kinetic-based simulation approach in this study is critical from a safe storage and handling perspective. © 2010.

Item Details

Item Type:Refereed Article
Keywords:DSC; Iso-conversional methods; Oxidation kinetic; Self-heating; Sulfide minerals; Autocatalytic; Iso-conversional method; Kinetic simulation; Large parts; Mineral concentrates; Non-isothermal DSC measurements; Oxidation kinetic; Oxidation kinetics
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Ocean Engineering
Objective Division:Mineral Resources (excl. Energy Resources)
Objective Group:Environmentally Sustainable Mineral Resource Activities
Objective Field:Environmentally Sustainable Mineral Resource Activities not elsewhere classified
Author:Khan, F (Professor Faisal Khan)
ID Code:94449
Year Published:2010
Web of Science® Times Cited:18
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2014-09-09
Last Modified:2014-09-09
Downloads:0

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