Abstract
In this study, leaching experiments were performed for extraction of magnesium from a chromite beneficiation plant tailing predominantly containing lizardite. The X-ray fluorescence (XRF) and X-ray diffraction (XRD) analyzes showed that the tailing sample contains 39.3wt.% MgO and consist of predominantly lizardite mineral. Hydrochloric acid (HCl) and sulphuric acid (H₂SO₄) were used as acids separately in leaching experiments. Acid concentration, leaching temperature, leaching time, and solid ratio were investigated as leaching parameters and optimized. Maximum magnesium extraction yield was determined to be nearly 98% for both acids under optimum leaching parameters which leaching temperature was 85°C, solid ratio was 20wt.%, leaching time was 120 minutes, and acid concentrations were 6 M for HCl and 4 M for H₂SO₄. In addition, it was determined that the leaching residue as a solid state was mainly composed of amorphous silicate according to the XRD analysis. Dissolution rate data were explained using Jander equation. Mg dissolution process found to be diffusion controlled.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.