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Sulfuric Acid Leaching of Copper from Mawat Complex Sulfide Ore in Sulaimaniya- N-E Iraq in the Presence of Hydrogen Peroxide Using Taguchi Method

Dr. Hijran Zain A. Toma, Dr. Hamed M. Jassim

2017encopperleachingsulfuric acidhydrogen peroxideTaguchi methodsulfide ore

Abstract

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The leaching of copper from Mawat sulfide ore in Sulaimaniya, North East of Iraq with sulfuric acid in the presence of hydrogen peroxide is studied. The aim of this study is for investigating the effectiveness of hydrogen peroxide as an oxidant for sulfuric acid leaching of copper from a complex sulfide ore. Distribution of elements with different particles size was initially determined using XRF to provide a basis to explain the leaching process. In this study, the following parameters are selected: leaching time, concentration of hydrogen peroxide, particle size, stirring speed, and acid concentration at a constant temperature of 25 ºC are studied. The concentrations of copper reduced as particle size decreased while silica, sulfur, and iron contents increased. The higher recovery of copper, 97.7%, was obtained at optimum leaching conditions which are time 180 minutes, stirring speed 160 rpm, particle size of 75 μm and concentrations of 3M H2SO4, 2M H2O2. It was observed that copper leaching rate increases with the increase of hydrogen peroxide concentrations. The increase in stirring speed has a negative leaching effect as it promotes hydrogen peroxide decomposition.

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Cite This Work

@article{d37dec00-ea7b-4787-8f22-3b1c4baa446e,
  title={Sulfuric Acid Leaching of Copper from Mawat Complex Sulfide Ore in Sulaimaniya- N-E Iraq in the Presence of Hydrogen Peroxide Using Taguchi Method},
  author={Dr. Hijran Zain A. Toma and Dr. Hamed M. Jassim},
  year={2017},
  language={en}
}
TY  - JOUR
TI  - Sulfuric Acid Leaching of Copper from Mawat Complex Sulfide Ore in Sulaimaniya- N-E Iraq in the Presence of Hydrogen Peroxide Using Taguchi Method
AU  - Dr. Hijran Zain A. Toma
AU  - Dr. Hamed M. Jassim
PY  - 2017
LA  - en
ER  -

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