Redistribution of Minor and Trace Elements During Roasting of Cu-Rich Complex Concentrate in Inert Atmosphere

Abstract A Cu-rich polymetallic complex concentrate produced at the Garpenberg Mines of Boliden Mineral AB, Sweden is investigated. Roasting 700 °C in N 2 leads to extensive liquid formation. The calcine obtained after cooling down room temperature found be severely sintered, entrapping numerous melt nuggets. This work focuses on analyzing redistribution minor (Ag) and trace elements consequent roasting treatment. Advanced micro-analytical techniques such as quantitative evaluation minerals by scanning electron microscopy (QEMSCAN), laser-ablation inductively coupled plasma-mass spectrometry (ICP-MS) microscopy-energy dispersive X-ray spectroscopy (SEM-EDS) are used conjunction for detailed characterization initial roasted calcine, especially nuggets (which symbolizes phases which were molten °C). element—Ag primarily silver-antimonide tetrahedrite mineral concentrate. Ag separates out when later interacts with galena form a phase. Furthermore, Mn, Cd, Tl Hg relevant Sphalerite major host Cd Hg. mainly galena. Consequent formations °C, redistribute tend segregate low-melting phase-fractions. Statistical methods correlation matrices clustering analysis effectively evaluating data from ICP-MS measurements sulphide samples. Graphical