Gretel Parker, Ronald Woods
In situ Raman spectroscopic investigations of copper iron sulfides in leach solutions have been undertaken. Coupling potentiodynamic techniques to Raman spectroscopy produces a powerful tool for studying mineral surface response to changing conditions, while ESEM and high-vacuum techniques provide complementary ex-situ information on surface structure and composition. Oxidative acid leaching of chalcopyrite at ambient temperature yielded a product with S-S bonds that were shifted from those seen with covellite, with little evidence of elemental sulfur formation. Leaching of chalcopyrite led to non-homogeneous product distribution. Raman spectroscopy was able to identify the products formed on the mineral surface in situ while leaching was occurring. Raman mapping and imaging demonstrated a surface distribution of the products which can be related to composition and structure changes of the mineral surface. The surface formed on chalcopyrite after anodic oxidation at 0.570 V vs. Ag/AgCl in 0.1 mol dm-3 HCl undergoes laser-induced transformation.
@article{2d3c4af6-3c51-4c14-9b2f-cdb0d399c04b,
title={RAMAN INVESTIGATION OF SULFIDE LEACHING},
author={Gretel Parker and Ronald Woods},
year={2023},
language={en}
}TY - JOUR TI - RAMAN INVESTIGATION OF SULFIDE LEACHING AU - Gretel Parker AU - Ronald Woods PY - 2023 LA - en ER -
Introduction Concerns over air pollution and the environmental problem of acid rain have made governments all over the world tighten their regulations
İbrahim Sönmez, Kemal Şahbudak
Chalcopyrite (CuFeS2) is commonly used ore in the production of copper, but leaching of this ore is very slow and inefficient due to “passivation” dur
The leachability tests for manufacturing scrap TV boards (STVB) have indicated the release of metals beyond the limit levels with potential problems f
Printed circuit boards (PCBs) from electronic gadgets at the end of their useful life period are currently being dumped in landfills or incinerated, c
C.N. Mpinga, J.J. Eksteen
Platinum Group Metals (PGMs), often with associated gold, have very few occurrences where they are present in an ore deposit at economically extractab