Separation of silicon and iron in copper slag by
Approximately 2.0–3.0 t of copper slag (CS) containing 35%–45% iron is generated for every ton of copper produced during the pyrometallurgical process from copper concentrate.Web
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Approximately 2.0–3.0 t of copper slag (CS) containing 35%–45% iron is generated for every ton of copper produced during the pyrometallurgical process from copper concentrate.Web
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This process results in the generation of vast quantities of copper slag as a by-product. Usually, the production of 1 ton of Cu is associated with the generation of around 2.2 t of slag [ 75 ]. The global production of copper slag from the smelters is about 21.1 Million Tonnes (MT), the copper content of which lies in the range of 0.5–2% ...Web
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The reaction kinetic parameters and reaction mechanism of reduction process for copper slag were studied, which provided a theoretical basis for iron recovery from copper slag by reduction modification–magnetic separation. The effect of C/O ratio and CaO content on the reduction process of copper slag was discussed in non …Web
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In the copper pyrometallurgy process, 2–2.5 tons (metric) of copper slag byproducts are produced for every ton of crude copper produced [3,4,5]. As some papers have reported, in 2019, China's copper output reached 9.8 million tons, and more than 20 million tons of copper slag were produced [ 6, 7 ].Web
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Smelting is the pyrometallurgical process used to produce copper metal with the use of mining concentrates or copper scrap as the primary source of feed. ... However, copper-containing phases in slag can differ, and they may be in the form of oxides, sulfides, 6 or a mixture of both. One of the other main components of slag is the silica phase ...Web
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Copper slag is produced during the manufacturing of copper, and for every ton of copper production about 2.2 tons of copper slag are generated, and 1.5 million tons of copper slag are generated in Korea every year [1–5]. Dumping or disposal of copper slag causes wastage of metal values and leads to environmental problems.Web
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In another article, entitled "Effects of Some Additives on Copper Losses to Matte Smelting Slag," the same group of authors evaluated the effects of CaO and B 2 O 3 additions on copper losses to slag and compared the results with those of calcined colemanite addition. The results of matte-slag-flux at 1250°C under nitrogen atmosphere …Web
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Ni, Co can also be achieved in slag cleaning process. Reductive smelting of copper slag with addition of coal, pyrite (FeS 2 ) and fluxes (such as CaCO 3 ) in electric furnace is a potential ...Web
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During the water-quenching process of the copper slag, approximately 10 tons of circulating water and 1 ton of fresh water are required for processing 1 ton of slag, and the heat of the quenching water cannot be recovered completely. ... Copper slag can be used as an Fe-adjusting material in construction, a cement additive, and asphalt …Web
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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 …Web
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Copper slag, a waste solid produced in the copper smelting process, is a high-quality secondary resource with huge output. The recycling and utilization of copper slag is of great interest because it avoids the loss of valuable metals and the threat of harmful metals, and saves a lot of natural resources and energy. This paper firstly …Web
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1. Introduction. Copper slag (CS) is a type of solid waste associated with the production of the copper metal. Approximately 2–3 tons of CS are generated when producing 1 ton of copper metal [1], [2].The annual production of CS is approximately 40 million tons worldwide [2].During the previous decades, large amounts of CS have been …Web
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Consequently, terminology from process engineering can be used to describe slags. From the perspective of road construction or concrete production, slags are raw materials and the road or the concrete are the product. ... (2017) Effect of copper slag, iron slag and recycled concrete aggregate on the mechanical properties of concrete. …Web
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Bearing in mind the content of copper and precious metals in the ores that are currently being processed, it can be said that slag could be an important raw material for the production of copper. Flotation is one of the possible methods for the reprocessing of smelter slag and recovering copper and other metals [3, 4].Web
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Copper smelting slag is a solution of molten oxides created during the copper smelting and refining process, and about 1.5 million tons of copper slag are generated annually in Korea. The oxides in copper smelting slag include ferrous (FeO), ferric oxide (Fe 2 O 3), silica (SiO 2 from flux), alumina (AI 2 O 3), calcia (CaO) and magnesia (MgO).Web
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The chemical analysis of the reverb and converter slags used in the experiments are given in Table 1.As can be seen from the table, reverb and converter slags contain significant amounts of Cu and Co. Significant reductions in the grade of copper ores processed in recent years strengthen the idea of using these slags as a secondary …Web
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Abstract and Figures. The pyrometallurgical processing of copper concentrates generates large amounts of iron and copper-containing slag. It is an available way to separate and recover iron and ...Web
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A new copper slag cleaning process is proposed for cleaner production of copper and efficient utilization of WCO in present work. Both theoretical analysis and experimental results indicate that WCO can be used as reductant to reduce magnetite in copper slag. Based on the experimental results, magnetite in 250 g copper slag …Web
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Copper slag can perform roles similar to pozzolans in the hydration process. This paper extends the comparative study of copper slag concrete with polypropylene fiber (PPF) subjected to destructive and non-destructive testing. Under destructive testing, compressive strength of concrete cubes, compressive strength of mortar cubes, splitting ...Web
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Depending on the reactions of the method and the medium, the leaching process for copper slag can be grouped into two main types, chemical leaching (e.g. acid leaching and alkaline leaching), and bioleaching, which has also caught much attention …Web
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A significant source of copper losses from pyrometallurgical copper extraction is attributed to dissolved and entrained copper in discarded slag. Entrained copper can be recovered via pyrometallurgical slag cleaning in a settling furnace, where the slag viscosity and copper droplet size distribution (CDSD) are critical parameters. …Web
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Some 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 ...Web
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As a result of this process, copper-rich matte (sulphides) and copper slag (oxides) are formed as two separate liquid phases. The addition of silica during smelting …Web
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Copper slag is a by-product obtained during smelting and refining of copper. The waste copper slag can be used as abrasive tools, road construction, and ballast. ... lead/zinc) depending on the industry from which they come. Figure 5 presents a general schematic diagram for the slag production process for copper, nickel, and lead–zinc …Web
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Utilization of copper slag with the view of recovering valuable metals such as copper and iron prior to disposal, helps in keeping the environment safe . The other …Web
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Copper slag is produced during the smelting process and converting steps of pyrometallurgical production of copper. It has been estimated that for every ton of …Web
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The chemical composition of copper slag depends on the treatment process and furnace type, and is typically 30–40% Fe, 35–40% SiO 2, ≤10% Al 2 O 3, ≤10% CaO, and 0.5–2.1% Cu . A significant portion of the produced slag is stockpiled [ 1 ], an option that may result in environmental and space challenges [ 2 ].Web
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Copper slag, an important by-product of the copper smelting process, is mainly composed of 2FeO SiO2, Fe3O4, and SiO2. Due to the sufficient metal oxides, copper slag is regard as a potential ...Web
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Copper smelting slag usually contains 1–6 wt% copper, which can be recovered by pyrometallurgical and flotation processes. However, the tailing slags still consist of 0.3–0.7 wt% Cu and 35 ...Web
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Copper and iron can be used as raw materials to make copper-containing steel or copper-containing cast iron, and copper and iron in slag are comprehensively utilized [17,18]. In the copper smelting process, copper slag is produced in the process of preparing matte.Web
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Two types of slag can be produced: an air-cooled copper slag with light black color and a glassy appearance, and granulated copper slag which is porous with a vesicular structure. 26 The specific gravity of copper slag varies as a function of the iron content, between 3.2 and 3.8 kg/m 3, and its water absorption is typically very low (<0.2 wt ...Web
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copper slag; mineralogy; heavy metal; pyrometallurgy; hydrometallurgy; socioeconomic impact. 1. Introduction. Numerous slags are produced as a second stream which is not desired in various …Web
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• Flowsheet for copper recovery from copper slag proposed. Abstract Copper slags are a by-product generated from copper extraction. Rich in iron oxide, …Web
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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, silica, and alumina. Slag is a major problem in the metallurgical industries as it is dumped into heaps which have accumulated into millions …Web
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Copper slag, which is the waste material produced in the extraction process of copper metal in refinery plants, has low cost, and its application as a fine aggregate in concrete …Web
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