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A LABORATORY INVESTIGATION ON THE PERFORMANCE OF SOUTH AFRICAN ACID PRODUCING GOLD MINE TAILINGS AND ITS POSSIBLE USE IN MINE RECLAMATION
Gcasamba, S.P., K. Ramasenya, S. Ekolu, and V.R.K. Vadapalli.
Journal of Environmental Science and Health, Part A 54(13):1293-1301(2019)
Laboratory investigations were conducted on gold mine tailings (GMT) to assess their chemical, mineralogical, and geotechnical characteristics and their suitability as an alternative backfilling solution in mine reclamation. Chemical characterization revealed that GMTs are dominated by Si, Al, and Fe with notable amounts of Cr, Zr, Zn, Pb, Ce, As, Ba, Ni, V, Sr, Nd, Cu, U, and Co. Mineralogical characterization revealed a composition of silicate minerals with secondary minerals such as jarosite, goethite, and hematite. GMT composites showed improved strength characteristics with a particle size that could produce a paste fill with a low water-cement ratio. Curing and addition of cement showed positive effects on the compressive strength and shear strength of the tailings but had a negligible impact on compaction characteristics and permeability.
Journal of Environmental Science and Health, Part A 54(13):1293-1301(2019)
Laboratory investigations were conducted on gold mine tailings (GMT) to assess their chemical, mineralogical, and geotechnical characteristics and their suitability as an alternative backfilling solution in mine reclamation. Chemical characterization revealed that GMTs are dominated by Si, Al, and Fe with notable amounts of Cr, Zr, Zn, Pb, Ce, As, Ba, Ni, V, Sr, Nd, Cu, U, and Co. Mineralogical characterization revealed a composition of silicate minerals with secondary minerals such as jarosite, goethite, and hematite. GMT composites showed improved strength characteristics with a particle size that could produce a paste fill with a low water-cement ratio. Curing and addition of cement showed positive effects on the compressive strength and shear strength of the tailings but had a negligible impact on compaction characteristics and permeability.
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