Mohanraj, G.T.Rahman, M.R.Arya, S.B.Barman, R.Krishnendu, P.Meena, S.2026-02-042022Advanced Powder Technology, 2022, 33, 1, pp. -9218831https://doi.org/10.1016/j.apt.2021.12.001https://idr.nitk.ac.in/handle/123456789/22849Characterization studies were conducted on low grade copper ore with the aid of standard approaches. The Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy (SEM-EDS) study specifies the semi-quantitative data of qualitatively analyzed chemical elements present in the ore sample. Optical Microscopy (OM) and X-Ray Diffraction (XRD) endorse the presence of chalcopyrite (CuFeS<inf>2</inf>) and pyrites along with other different mineral phases in the ore sample. Thermo Gravimetric Analysis (TGA) and Mossbauer spectroscopy studies confirm the formation of CuO and Fe<inf>2</inf>O<inf>3</inf> after roasting at 700 °C. The better copper recovery from low grade copper ore was achieved through optimized leaching parameters. It was found that the particle size of −63+53 µm can be leached up to 94.96 % of copper using a lixiviant reagent mixture (30 vol. % hydrogen peroxide and 0.5 M sulfuric acid) under magnetic stirring for 30 min at a constant speed of 300 rpm, by keeping the liquid/solid (L/S) ratio at 20/2 ml/g. Moreover, the solvent extraction process works well with the pregnant leach solution, whereby, 98.9 % of copper extraction is possible, and the loading time is less than a minute. Meanwhile, 93.91 % of overall copper extraction efficiency was achieved through optimized leaching parameters and solvent extraction method. © 2021Copper oxidesEnergy dispersive spectroscopyHematiteLeachingParticle sizeParticle size analysisPyritesScanning electron microscopySolventsThermogravimetric analysisCharacterization studiesCopper extractionEnergy dispersive X ray spectroscopyLeaching parametersLow-grade copper oresMineral phasisOptical-Quantitative dataThermo gravimetric analysisX- ray diffractionsSolvent extraction