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In order to achieve single recovery of Fe, Cu and Si in copper slag and deep removal of impurities in products, the activated reduction combining directional oxidation are adopted to improve the separation limit of target components, which mineral constituent as well as chemical composition at different stages are investigated through …
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Chemical compositions of copper slag are shown in Table 1. It can be seen from that the copper slag contains 2.71 wt.% Cu, 0.48 wt.% Ni, and some toxic elements, including Pb, Zn and As, are also observed in it. Phase compositions of the copper slag were determined by X-ray diffraction (XRD)analyses and the result are shown in Fig. 1.
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Compared to the hydrometallurgical processes, pyrometallurgical processes commonly have different removal behaviours of environmentally hazardous trace …
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Copper slag can be used in cement (Zhang et al. 2022c) and concrete because it has pozzolanic activity (Gabasiane et al. 2021). Copper slag can also be used in abrasive tools (Gorai et al. 2003 ...
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Abstract: Copper slag is generated when copper and nickel ores are recovered from their parent ores using a pyrometallurgical process, and these ores …
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Copper slag (CS) is a solid waste produced in the process of copper smelting. Typically, CS contains about 30 − 45% Fe, 30 − 40% SiO 2, and other trace elements (e.g., Zn, Mo, and Pb) (Shibayama et al. 2010; Seyrankaya 2022; Gümüşsoy et al. 2023).According to statistics, with the rapid economic development, the annual output of …
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Abstract. Copper slag can be treated as a secondary resource since it usually contains a substantial amount of copper and other valuable metals. Characterization of the slags to determine the expected metal recovery is essential for the design of separation flow sheets. In this study, the chemical and mineralogical composition of a copper slag ...
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A process was developed which involved curing of the slag with strong sulphuric acid followed by water leaching to recover cobalt and copper from converter …
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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 …
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Air-cooled and granulated copper slags have several favourable mechanical properties for use as aggregates in construction such as excellent soundness characteristics, excellent abrasion resistance and good stability (Gorai et al., 2003).These properties of copper slag make it suitable as a partial or full replacement for Portland …
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When C/O = 0.2, although the reduction in sulfur content can also improve the copper grade of matte, the copper content less than 30% will produce a lot of difficulties in subsequent utilization. It causes the increase in oxygen consumption, slag amount and copper loss of converting slag in the blowing process. S/Cu.
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Generally, the utilization degree of blast furnace ironmaking slag is high, and it is mostly used as a raw material for manufacturing cement. Steelmaking slag can be used as a source of iron to be returned to the production process for recycling, but P 2 O 5 in slag accumulates over time, resulting in an increase of phosphorus in iron ...
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Copper Slag is by-product or waste stream from the production of copper. The smelting process produces a glass like substance that will settle on the top of the melting copper and is basically the non-copper impurities being separated. The slag is then skimmed off the melted copper and delivered to a "slag heap" or slag dump where it is left to cool.
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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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Processing of copper slag. Though copper slags can be used to manufacture concrete, ceramic tiles, roofing granules, and abrasives, the high logistics cost of transporting them from a remote area to a manufacturing facility makes it uneconomical …
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Volume 172, 1 December 2023, Pages 182-191. Research Paper. An efficient approach to utilize copper smelting slag: Separating nonferrous metals and reducing iron oxide at high temperature. ... In the bioleaching process, copper slag is treated with bacteria, which oxidize Fe- and/or sulfur (Panda et al., 2015), ...
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Consequently, flotation was attempted to recycle Cu in slag containing copper sulphide components. Three key factors affecting flotation were ascertained, namely, grinding fineness, the collector ...
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aim to optimize flotation process of copper slag to achieve maximum flotation recovery of cop- ... Min. Met. Eng, 70, p. 191-204. ... such as copper slag, slag tailings can be a new potential ...
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The slag's specific gravity and hardness depend on the iron oxide content within the sample, whereas, much like ferronickel slag, copper slag has a large iron content and can be difficult to grind to usable particle size as a secondary cementitious material and aggregate (Sun et al., 2022).
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Copper slag is a by-product of the copper smelting process. One ton of refined copper produces 2–3 tons of copper slag, resulting in a total yearly production of 4.5 million tons, and an accumulated volume of 50 million tons . Granulated copper slag (GCS) is often utilized in SCMs owing to its pozzolanic activity . However, due to poor ...
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Old scrap is a huge potential source of recyclable copper. It is also difficult to process. The challenges for processing old scrap include: (a) Low Cu grades – old copper scrap is often mixed with other materials and must be separated from this waste (b) ... Copper slag: 1–8%: Copper smelter slag: Copper dust: 1–50%:
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Copper slag (CS) is a by-product of the copper smelting process and is one of the nonferrous metal residues. CS is mainly composed of Fe 2 O 3, SiO 2, and a small …
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A pyro-hydrometallurgical process for the treatment of copper slag has been developed to accomplish recovery of nickel, cobalt, and copper and reuse of iron source. It was proved that the slag phase was reconstructed by sulfation-sulfate decomposition roasting followed by water leaching, over 95% iron existing as hematite …
DetailsSome of the possible metals that can be recovered from the copper slag include Cu, Fe, Ni, Co, and Ag (precious metals). ... A novel process to upgrade the copper slag by direct reduction-magnetic ...
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A wide variety of processes for the recovery of valuable metals from copper slag have been proposed, which can be summed up in three types: pyrometallurgical, …
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The utilization of solid waste is the challenge for the civil and environmental engineers to utilize the waste from different industry to excel the sustainable development, and in the same time, it is matching with the cost concern of the present materials. Copper slag is a by-product obtained during smelting and refining of copper. The waste copper …
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Cobalt, Copper, Fluorine, Metals. Abstract. Large amounts of solid wastes are produced in copper and aluminum smelting processes, which not only cause losses …
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Copper slag can mix and ground with gypsum and cement clinker to produce cement. This process uses a large amount of copper slag (about 60–70% of the total cement raw materials), and energy consumption can be reduced by 50%. ... According to different copper slag depletion process requirements, the total addition ratio of …
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According to the flotation kinetic model of copper slags, the adhesion process of copper slag particles is in accordance with first-order kinetics. Through the addition of sodium carbonate, the stability of the pulp can be increased and the flotation kinetics can be improved significantly. In the optimization process of flotation conditions …
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Copper slag catalyzed H 2 O 2 decomposition into ·OH to remove phenol and UV light accelerate the catalytic oxidation process. The potential of copper slag as a catalyst for eliminating the pesticide tendazole using the heterogeneous photo-Fenton process was investigated under natural solar irradiation at a pH close to neutral (García ...
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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, …
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Comprehensive Utilization of Copper Slag … 277 Table 1 XRF elemental analysis of the copper slag Element O Ca Mg Al Si Fe Co Ni Cu S Content (wt.%) 34.47 2.35 3.53 3.90 18.50 36.98 0.16 0.53 0. ...
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