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·A technological scheme for copper slag processing is proposed It comprises 5 stages namely i air oxidation of the copper slag at a temperature above 800 °C for 2 h; ii hydrothermal treatment of the oxidized slag with sodium hydroxide solution 140 g/l at 190 °C for 3 h; iii separation of the solid from the liquid phase by hot filtration; iv gel formation through
·Copper slag was subjected to in depth mineralogical characterization by integrated instrumental techniques and evaluated for the efficacy of physical beneficiation and mixed meso acidophilic bioleaching tests towards recovery of copper Point to point mineral chemistry of the copper slag is discussed in detail to give better insight into the association of
·The separation of copper and arsenic has always been a major problem of the flotation beneficiation process which is affected by the multiple factors the chemical speciation and mineralogical structure of elements in slag as well as the processing conditions such as pH of the pulp the concentration of agents and the number of additives etc Ma et al 2016; Alter
·The copper slag produced by the smelting industry contains valuable metals like Cu Fe Zn Pb Co and Ni along with harmful components like As Hg Bi and Sb However over 80% of global copper slag is discarded without proper disposal wasting valuable metals and harming the environment Phiri et al 2022 While some copper slag has been
The treatment of large amounts of copper slag is an unavoidable issue resulting from the high demand for copper during the global transition to a sustainable development path
In the calculation of slag cooling following data are used average temperature of the slag at the beginning of the cooling Tp = 1290 oC average temperature of the ambient air To = 20 oC slag density ρ = t/m3 heat capacity of slag cp = kJ/kgK effective thermal conductivity of the slag λef = 15 W/mK effective thermal diffusivity
·The bulk chemical composition of copper slags may vary depending on the pyrometallurgical technique used; the phase composition of the copper slag can be quite diverse Gbor et al 2000 Gorai et al 2003 Lottermoser 2006 Lottermoser 2010 Potysz et al 2015 For example studies on air cooled and quenched copper slag revealed that the diversity
Detailed process oriented characterisation on representative samples from plant survey of the slag flotation plant belonging to Aurubis Bulgaria has been realised in order to evaluate the mineralogical occurrences of Cu Ni Mo and Co bearing phases Kongoli FLOGEN 2014 MICROSCOPY ANALYSIS OF COPPER SLAG AND ITS PROCESSING BY FLOTATION
industrial copper slag flotation campaigns it was concluded that it is possible to obtain a commercial quality copper concentrate suitable for further processing in a copper smelter This mitigates certain environmental impacts of copper processing Keywords copper slag flotation concentrate smelting RESUMEN
·Minerals 2021 11 211 4 of 14 Table 2 Element content of Figure 2 Point Element/wt % Minerals Fe Cu S Si O Mg Al Ca Na 1 0 0 0 0 Fayalite
·Copper slag is generated when copper and nickel ores are recovered from their parent ores using a pyrometallurgical process and these ores usually contain other elements which include iron cobalt silica and alumina Slag is a major problem in the metallurgical industries as it is dumped into heaps which have accumulated into millions of tons over the
·the slag made it possible to recover the copper from the slag through a froth flotation processing route The work culminated in establishing fundamental optimum concentrator conditions to recover mainly the copper in the slag Although the Chibuluma concentrator as it is set up is not able to meet the slag optimum flotation
Copper slag flotation was studied on an industrial scale at a concentrator plant in the region of Atacama Chile This study consisted of the physical chemical and mineralogical characterization of the copper slag along with preliminary flotation tests This article focuses on industrial flotation which consisted of two oneyear campaigns 2016 and 2017
·Copper slag is generated as an unavoidable byproduct during pyrometallurgical processing of copper production The total worldwide mine production of copper has risen in the past decade increasing from 16 Mt in 2010 to 22 Mt in 2022 [] It is reported that for every ton of copper produced 3 tons of slag is generated [2 3] Copper slag from industrial smelting
·The flotation process presents several benefits such as its cost effectiveness high efficiency in separation and minimal environmental impact [17] These advantages contribute to its wide range of potential applications in the field of secondary resource recycling [18] [19] [20] [21] In China the flotation process has been subjected to recover copper from the CSS
·The leaching behaviors of primary copper Cu slags originating from Ausmelt reverbatory and converter furnaces operating under a single technological process were compared to a residual slag
·Chemical analysis of smelter slag sample obtained from Flotation plant in Bor Serbia showed that it contains % of copper of which over 73% is in the sulphide form as well as g/t of
Currently domestic and foreign scholars have carried out many researches on copper slag or slag ladle such as Zhang Lin He Peng et al [13 14] on the reduction of copper slag to extract iron found that calcium oxide is conducive to the reduction of iron in the copper et al [15]found that the calorific value of the reaction of copper slag and its oxides with some of the
Aiming at the recovery of copper from smelting slag a flotation approach was studied It was found that this slag composed of fine particles with complex association and distribution in which bornite was the main copper bearing mineral after a detailed mineralogy analysis via polarizing microscope SEM and XRD Consequently flotation was attempted to recycle Cu in slag
·Copper slag waste is considered a potential world resource owing to the huge amounts being produced annually worldwide which contain significant amounts of valuable metals Phiri et al 2021 The global copper slag production is estimated at 752 million tons for the period between 1999 and 2019 from the 13 main producing countries Fig 2
·Copper processing plants across the globe produce about million tons of CS per year Edraki et al 2014 with approximately 752 million tons of CS generated since 1999 Phiri et al 2022
·In this context [15] used microbial reagent extracted from Lactobacillus fermentum as a bio collector for the flotation of copper slag sample The flotation concentrate was then subjected to bioleaching by acidophilicbacterial strain Acidithiobacillus ferrooxidans for the treatment of base metals such as cobalt nickel and copper The
·Copper slag waste has continued to cause increasing concerns due to the huge volumes being produced annually worldwide This paper presents a review of copper slag as a potential resource for cobalt and copper metals for a circular economy An overview of the chemical and mineralogical characterisation of copper slag from 21 major producing countries
