2021/5/1 The copper slag produced by the slag cleaning furnaces as a final by-product, yields copper in the range of 0.55–1.3 wt.% in the discarded slag, with copper
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2023/2/12 Hence, the recent trends of copper smelting invariably lead to significant copper loss in slag, which needs to be recovered by means of reduction and settling in a
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2012/9/21 During the last few decades, the pyrometallurgical processes used for cleaning copper smelting slags have been steadily optimized. The electric furnace or rotary slag-cleaning furnace are now
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2012/11/1 this study, the minimum soluble copper content in the electric furnace slag is. expected to be near 0.55 wt.% Cu. This level does not account for a portion of. the copper present as mechanically ...
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extensively investigated. The electric furnace or rotary slag-cleaning furnace are now generally used to perform this task, giving a level of copper in discard slag typically in
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2022/11/13 The trial brick specimens using 100 wt% copper slag replacement for sand not only satisfied all requirements of cement brick in the Korean standard (KS) F 4004, but also the TCLP regulation ...
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2006/5/1 The maximum recovery of copper in alloy phase was obtained with 5% (by weight) initial carbon in the feed, 2% (by weight) CaO addition to the slag and a reducing
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Copper slag proved to increase tensile strength as the mixes with more copper slag had high capacities. A 28-day mix with 0% copper slag aggregate had a capacity of 4.75
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Copper is present in a smelting slag from Teniente Converter (TC) in the form of mecha-nically entrained matte inclusions and dissolved copper. Copper recovery from the slag
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2022/11/13 The trial brick specimens using 100 wt% copper slag replacement for sand not only satisfied all requirements of cement brick in the Korean standard (KS) F 4004, but also the TCLP regulation ...
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2023/8/1 To recover copper from copper slag, a novel slag cleaning method was proposed. The thermodynamics and binary phase diagram of FeO–SiO 2 were calculated first. Then, the effects of experimental parameters on the reduction of Fe 3 O 4, recovery of copper, and slag cleaning mechanism were investigated.The results showed that the
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2018/11/26 The copper smelting process produces plenty of copper slag every year, which is a hazardous solid waste, but a secondary resource. In the present study, the extraction of copper, nickel, and cobalt from copper slag was investigated through the process of sulfation roasting–water leaching and the process of sulfation roasting–sulfate
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2023/2/12 Hence, the recent trends of copper smelting invariably lead to significant copper loss in slag, which needs to be recovered by means of reduction and settling in a separate slag cleaning furnace. The reduction of Cu 2 O from slags is carried out by adding carbon/coke or by injection of various reductants (e.g., different types of oil or natural ...
获取价格2006/5/1 Secondary copper blast furnace slag was treated with carbon to derive the conditions for maximum recovery of copper with minimum simultaneous reduction of iron oxide. Experiments were carried out to study the effects of parameters such as temperature, carbon addition and CaO addition to the slag on the efficient recovery of copper. A two
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Alternatives of Copper (I) Oxide Reduction in a Copper Slag Cleaning Furnace Goran Vukovi´c, Anton Ishmurzin, Juergen Schmidl, Bojan Zivanovi´c, and Bernhard Handle Abstract As environmental, energy saving, and legislation considerations are becoming ever more important, there is evidently a demand for further improve-
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2022/4/9 3.1 Phase Diagram Analysis of the Slag. FeO, SiO 2, and Fe 3 O 4 are the main phases of the copper slag based on the chemical analysis. The FeO-SiO 2-Fe 3 O 4 ternary phase diagram was selected to analyze the position of the slag component in the phase region, as shown in Fig. 3a. Based on the 10 sets of data provided by the bottom
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2020/2/8 Copper slag and stainless steel slag of Electric Arc Furnace (EAF) are two typical metallurgical solid wastes, which contain a large number of valuables, such as Fe, Cr, and Cu. The transition metal elements in the waste slags, such as Cr and Fe, can be recycled as the coloring ions in the black ceramic tile. ...
获取价格2022/6/1 Moreover, the flotation kinetic model of copper slag was established and the results showed that the movement of copper slag in the flotation process conforms to the first-order kinetics. The addition of sodium carbonate increased the stability of the pulp and improved the flotation kinetics greatly, resulting in a better flotation performance.
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2021/12/1 This fraction is significant because it affects heavily on the copper recovery during the slag cleaning phase. Basically, the fraction of oxide copper is dependent on the amount of sulfur present, which was kept fixed at 0.9%. The higher the oxidation degree and thus the copper content in slag, the higher the oxidized copper
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2004/3/1 The recovery of copper from smeltery furnace slag by flotation has been studied. By analysis the slag containing 1.61% copper and 27.80g/t silver is available to recovery. The effective factors such Expand
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2012/11/1 Such conditions include operating the electric furnace at metallic copper saturation, maintaining the %Fe in the electric furnace matte between 6 wt.% and 9 wt.%, not exceeding a slag temperature ...
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2010/1/1 Pyro-metallurgical copper slag (CS) waste was used as the source material for ultrasound (US) silica extraction under acidification processes with 26 kHz with HCl, HNO3, and H2SO4 at different ...
获取价格2024/2/1 The feasibility of preparing zinc ferrite from high-zinc electric arc furnace (EAF) dust and high-iron copper slag (CS) based on direct microwave roasting of the wastes together was assessed in this study, with a focus on the effect of microwave roasting temperature. According to the permittivity and permeability measurements of the raw ...
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2004/3/1 The recovery of copper from smeltery furnace slag by flotation has been studied. By analysis the slag containing 1.61% copper and 27.80g/t silver is available to recovery. The effective factors such Expand
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2012/11/1 Such conditions include operating the electric furnace at metallic copper saturation, maintaining the %Fe in the electric furnace matte between 6 wt.% and 9 wt.%, not exceeding a slag temperature ...
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2010/1/1 Pyro-metallurgical copper slag (CS) waste was used as the source material for ultrasound (US) silica extraction under acidification processes with 26 kHz with HCl, HNO3, and H2SO4 at different ...
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2024/2/1 The feasibility of preparing zinc ferrite from high-zinc electric arc furnace (EAF) dust and high-iron copper slag (CS) based on direct microwave roasting of the wastes together was assessed in this study, with a focus on the effect of microwave roasting temperature. According to the permittivity and permeability measurements of the raw ...
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2006/1/1 Pyrometallurgical production of molten copper generates two slags, smelting and converting. Smelting furnace slag typically contains 1%–2% Cu.
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2022/9/1 Copper slag is an acid slag mainly composed of Fe 2 SiO 4 and CaFeSi 2 O 6, which is classified as solid waste in the copper smelting industry (Li et al., 2019). In China, 2.2–3.0 tons of copper slag were produced per ton of refined copper, and tens of millions of tons of copper slag were released into the environment every year (Zhou et al ...
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2009/5/30 Cleaning experiments of a copper matte smelting slag from the water-jacket furnace was undertaken by direct reduction in a laboratory-scale electric furnace. The effects of coal-to-slag ratio, w, and the reduction time, t, were considered for two different coal/slag mixing procedures. In the first procedure, metallurgical coal was
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2006/5/1 Global copper slag (CS) emissions reached 57.2 million tons in 2021. Despite the increasing reuse of CS, the treatment of CS is still dominated by landfill so far, which not only occupies land ...
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2021/2/3 However, recovery of copper was about 4 percent lower for the high copper slag (sample C) and 23 percent lower for the low copper slag (sample A). Flotation tailings from the quenched slags ranged from 0.53 to 0.66 percent; slow-cooled slags gave tailings containing from only 0.26 to 0.39 percent copper with lowest analyses for 30
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2018/8/1 Converter copper slag can be viewed as an important secondary resource for valuable metals, considering its high commercial value. The current research investigates the recycling of copper by a combination of theoretical and experimental methods. Based on a modified Stokes equation, it was determined that copper droplets in the molten slag
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2023/8/1 The fine-grained copper slag finds its applications in pavements, while the granulated one improves the stability of the asphalt mixtures. 3.1.3. Concrete. The pozzolanic activity of copper slag has been reported to be similar to that of fly ash [65]. The blended mixture of copper slag and cement exhibited similar properties to that of a ...
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2024/1/1 The safe and efficient treatment of copper slag (CS) is an important aspect of the circular economy and green development. In order to reduce the negative environmental impact, CS is used as a precursor to substitute different contents of ground granulated blast furnace slag (GGBS) in the manufacturing of alkali-activated materials
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2022/10/1 Differences exist between copper slag and traditional blast-furnace slag in terms of recovery methods, along with difficulties. These are mainly reflected in the following aspects: (1) Composition: Compared with blast-furnace slag, copper slag contains large amounts of iron, copper, and other metals. Therefore, the aspects of
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2022/2/4 The compositions of the liquid, spinel, and matte phases measured by EPMA, together with the bulk composition of the slag measured by XRF, are presented in Table 2.The Fe/SiO 2 weight ratio of the slag is 1.88 in bulk and 1.09 in the liquid. The spinel phase contains “FeO” but not SiO 2 resulting in a lower Fe/SiO 2 ratio in the liquid
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