Purification Route of Pyrite from Coal Mining

Abstract:

Pyrite, mineral largely found in nature, is considered a solid waste when is obtained from the coal mining. However, can be precursor of products like: sulphur, sulphuric acid, hematite, sulphur dioxide, fertilizers and iron sulfates. Several studies also point it property of semiconduction and it use in solar cells. Increase it purity level is important for transforming it in products with more aggregate value. Thus, the present work suggests a purification route for the reduction in soluble salts in water, organics and quartz associated with pyrite from the coal mining beneficiation. The used methods were solubilization in hot water and in organic solvent (dichloromethane). Were applied XRD, FTIR, total sulphur determination, and gas helium picnometry. Comparing the results obtained for the “in nature” pyrite with the purified one, proved the efficiency of the proposed method.

• Periodical: Materials Science Forum (Volume 869)
• Pages: 155-158
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.869.155
• Online since: August 2016
• Authors: Camila Machado de Oliveira, Adilson Oliveira, Jeane Almeida do Rosário, Agenor de Noni Jr., Michael Peterson
• Keywords: CoAl, Leaching, Pyrite

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