Characterization of Copper Slag

Wang, X; Geysen, Daneel; Tinoco, Silvia Valeria Padilla; D’Hoker, N.; Gerven, Tom Van; Blanpain, Bart

doi:10.1002/9781118679401.ch7

Cited by 8 publications

(9 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On Figure 2(b), the Fe-Cu-Ni sulphide is higher embedded in the copper slag. Previous researchers have similar results which highlight that fayalite are present in the glass host with sulphide phases illustrated with bright spots Fe À Cu À NiSulphide [22]. This shows a detailed study of the distribution of copper bearing phases and this concludes that Sem is more adaptable to be used for characterization of minerals in small amounts.…”

Section: Mineralogical Analysis Using Qemscansupporting

confidence: 64%

See 1 more Smart Citation

Characterization of copper slag for beneficiation of iron and copper

Gabasiane

Danha

Mamvura

et al. 2021

Heliyon

View full text Add to dashboard Cite

Before disposal of any metallurgical waste to the environment, it is the responsibility of mining institutes to adhere to the permissible metal content limits. Base metals, especially iron and copper, have adverse effects of reducing the soil pH and excessive concentrations of these in the disposed waste may result in soil pollution and toxicity, with adverse effects on plant growth and animal health. Copper slag is a metallurgical waste that is disposed by way of stockpiling at designated dump sites within a mining site. The observed depletion of highgrade iron ores in Botswana and the environmental hazards associated with disposal of untreated metallurgical waste, presents an opportunity for research on secondary sources of iron and copper. Our characterization results show that this BCL copper slag is a good secondary source of base metals, especially iron and copper. These results reveal that the elemental proportion of iron was around 35.4%. Literature states that an iron grade that is considered viable for economic beneficiation should be at least 25% and this slag has an iron content above this limit, hence poses a serious environmental threat upon disposal. This article presents an investigation into the mineralogy of the copper slag at a plant situated in Selebi Phikwe, a town in the northern part of Botswana. Quantitative evaluation of minerals by scanning electron microscopy (QEMSCAN) quantified that no cobaltsulphide was detected and strongly indicated that the cobalt within the sample occurs in solid solution in either the fayalite phase or glass phase. Spot analysis from electron probe microanalyzer (EPMS) images indicated an unusually high content of copper compared to any other metal. We elucidate that, this was due to the inefficient processing techniques employed during operational years of the mine. The relative compositions of Co, Fe, Ni and Cu were 0.14%, 35.4%, 0.28% and 0.29% respectively. This analysis justifies our interest in considering this copper slag as a secondary source of iron for beneficiation purposes.

show abstract

Section: Mineralogical Analysis Using Qemscansupporting

confidence: 64%

“…QEMSCAN was used to determine the distribution and portions of iron bearing phases [22] and Table 3 shows results from the QEMSCAN. Results from the scan indicate the different phases present in the copper slag with respect to the approximate abundance present in those phases.…”

Section: Mineralogical Analysis Using Qemscanmentioning

confidence: 99%

Characterization of copper slag for beneficiation of iron and copper

Gabasiane

Danha

Mamvura

et al. 2021

Heliyon

View full text Add to dashboard Cite

show abstract

“…In addition, low amounts of other oxides were detected such as Co 3 O 4 (1.18%), Na 2 O (0.97%), K 2 O (0.29%), NiO (0.31%), SnO 2 (0.12%), and Cr 2 O 3 (0.27%). Typically, Cu slags contain high levels of SiO 2 and Fe x O y [58,59]; hence, the properties of the selected slag in this work were predicted to be distinct. Compared to already investigated PbO-rich slags [38,41], the present slag is distinguished by a high level of aggressive Cu oxide.…”

Section: The Phase Composition Of Raw Materials By Xrdmentioning

confidence: 99%

“…Other phases present in the slag were magnetite, Fe 3 O 4 , fayalite, Fe 2 SiO 4 , and cuprite, Cu 2 O. Moreover, the increased background at the XRD pattern indicates that the slag contained a glassy phase, resulting from the fast cooling of the test slag[59].…”

mentioning

confidence: 99%

Corrosion Resistance of MgO and Cr2O3-Based Refractory Raw Materials to PbO-Rich Cu Slag Determined by Hot-Stage Microscopy and Pellet Corrosion Test

et al. 2022

View full text Add to dashboard Cite

Chemical resistance of commercial refractory raw materials against Cu slag is critical to consider them as candidates for the production of refractories used in Cu metallurgy. In this study, we show the comparative results for the corrosion resistance of four commercial refractory raw materials—magnesia chromite co-clinkers FMC 45 and FMC 57, PAK, and fused spinel SP AM 70—against aggressive, low-melting PbO-rich Cu slag (Z1) determined by hot-stage microscopy (up to 1450 °C) and pellet test (1100 and 1400 °C). Samples were characterized after the pellet test by XRD, SEM/EDS, and examination of their physicochemical properties to explore the corrosion reactions and then assess comparatively their chemical resistance. Since many works have focused on corrosion resistance of refractory products, the individual refractory raw materials have not been investigated so far. In this work, we show that magnesia chromite co-clinker FMC 45 exhibits the most beneficial properties considering its application in the production of refractories for the Cu industry. Forsterite (Mg2SiO4) and güggenite (Cu2MgO3) solid solutions constitute corrosion products in FMC 45, and its mixture with slag shows moderate dimensional stability at high temperatures. On the other hand, the fused spinel SP AM 70 is the least resistant to PbO-rich Cu slag (Z1); it starts to sinter at 970 °C, followed by a fast 8%-shrinkage caused by the formation of güggenite solid solution in significant amounts.

show abstract

“…In an attempt to avoid the formation of the unwanted ether, an alternate acetylation/amination step was performed in a one-pot fashion (Table 1). 10…”

mentioning

confidence: 99%

Simplified Synthesis of an Air-Stable Copper-Complexed Josiphos Ligand via Ugi’s Amine: Complete Preparation and Analysis from Ferrocene

Johnson¹,

Murphy²

2022

Synthesis

View full text Add to dashboard Cite

Ligands containing ferrocene backbones often feature both planar chirality and asymmetric centers, making them attractive options for asymmetric catalysis. Ugi’s amine is a ubiquitous ferrocene-based chiral building block that can be functionalized to form a variety of tunable Josiphos ligands; however, few sources lay out the route from start to finish. Starting from ferrocene, we compile a synthetic route to an air- and moisture-stable copper(I)-Josiphos complex via enantiopure Ugi’s amine, providing a potential one-stop shop for the synthesis of a wide range of Josiphos ligands.

show abstract

Characterization of Copper Slag

Cited by 8 publications

References 30 publications

Characterization of copper slag for beneficiation of iron and copper

Characterization of copper slag for beneficiation of iron and copper

Corrosion Resistance of MgO and Cr2O3-Based Refractory Raw Materials to PbO-Rich Cu Slag Determined by Hot-Stage Microscopy and Pellet Corrosion Test

Simplified Synthesis of an Air-Stable Copper-Complexed Josiphos Ligand via Ugi’s Amine: Complete Preparation and Analysis from Ferrocene

Contact Info

Product

Resources

About