| In order to efficiently recovery carbon and vanadium from high carbon-bearing stone coal vanadium ore, process mineralogy, flotation condition test, new collector H4, flotation technology and theory of vanadium carried minerals and gangue minerals were conducted. This paper provides theoretical and practical guidance for preconcentration of carbon and vanadium from stone coal vanadium ore.Process mineralogy study shows that vanadium distributes mainly in the clay minerals, mica and ferric oxide, and carbon exists in the formation of amorphous carbon and graphite. Under the optical microscopy, carbon and vanadium carried minerals and quartz exist in extremely small and complicated mosaic structure.Due to the bad effect of carbon on vanadium and flotation reagent interaction, preconcentration of carbon from stone coal vanadium ore is beneficial to improve its integrated use value. In the flotation test, technology of two-stage grinding-flotation and direct vanadium flotation from the tailings was proposed two tackle with the ore bearing0.92%V2O5and14.12%carbon. Finally, carbon concentrate with the carbon grade and recovery of31.13%and64.61%respectively, vanadium concentrate with the V2O5grade and recovery of2.43%and50.53%respectively were obtained, the total vanadium recovery rate was86.67%and40.6%of tailing escaping rate.Infrared spectroscopy analysis and Zeta potential test result show that adsorption of collector H4on mica, quartz and feldspar surface is consisted of electrostatic adsorption and physical adsorption generated by inter-hydrocarbon chain hydrophobic association adsorption of collector molecules. |
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