Abstract
in this study the flotation of pyrite as the main sulfide impurity of Sangan iron ore in Iran, was investigated. For this purpose the effect of collector type, pH, collector concentration and stage dosing on reverse flotation of iron sulfide ore from magnetite ore was investigated. Two type of thiol collectors include xanthates (sodium isopropyl xanthate (SIPX) and potassium amyl xanthate (PAX)) and dithiocarbamate (di-ethyl dithiocarbamate (DTC)) and the mixture of collectors was studied. The highest sulfur removal was obtained with potassium amyl xanthate. Stage dosing had a significant effect in sulfide flotation and the best recovery was obtained when the collector was added in 4 stages. The acidity had a positive effect on sulfide floatability and the best result was obtained at pH 3.5-4. Investigation about collector concentration showed that increasing the SIPX concentration enhanced the sulfur removal but this factor was not effective for PAX.
Highlights
The Sangan Iron Ore Deposit forms part of the east-west trending Kuh-e-Taleb mountain range, and is located at Sangan at latitude N 34°24’, longitude E 60°16’ in the Khorasan Province, North-Eastern Iran
This study investigate anomaly C-north which is identified as high sulfur magnetite ore
Analytical grade sodium isopropyl xanthate (SIPX), potassium amyl xanthate (PAX) and di-ethyl dithiocarbamate (DTC) were used as collector in different tests and MIBC was used as frother in all tests
Summary
The Sangan Iron Ore Deposit forms part of the east-west trending Kuh-e-Taleb mountain range, and is located at Sangan at latitude N 34°24’, longitude E 60°16’ in the Khorasan Province, North-Eastern Iran. It has been shown that the use of mixtures of thiol collectors can have benefits over the use of pure collectors [1, 3] It has been observed, that an increase in xanthate concentration increased the grade of the concentrates in pyrite flotation, this is attributed to the fact that this factors increase the hydrophobicity of the pyrite and enhance elutriation in the froth phase [4]. In this study it has been tried to improve the quality of iron concentrate by improving the flotation of sulfur impurity For this purpose the effect of collector type, pH, collector concentration and stage dosing on reverse flotation of iron sulfide from magnetite ore was investigated. Two type of thiol collectors include xanthates (sodium isopropyl xanthate (SIPX) and potassium amyl xanthate (PAX)) and dithiocarbamate (di-ethyl dithiocarbamate (DTC)) and the mixture of collectors were studied
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