A comprehensive review on the recovery of copper values from copper slag
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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Co-modification of BOF Slag and Copper Slag to Recover
Copper slag is also a metallurgical solid waste produced during the copper smelting process; about 2–3 t of slag are produced for every ton of refined copper in China. 15,16,17 The contents of Fe and Cu in copper slags are considerable, approximately 30–45% and 0.5–3.0%, respectively, and thus recycling of valuable elements in copper …Web
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(PDF) A Study on Reduction of Copper Smelting Slag by Carbon …
The process is probably one of efficient ways to recover iron from copper slag to produce directly reduced iron (DRI), which can be used as the burden to produce weathering resistant steel by ...Web
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Utilization of copper slag in cement and concrete
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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Use of waste copper slag, a sustainable material
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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Comprehensive review on metallurgical recycling and cleaning of …
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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Characterization of copper slag for beneficiation of iron and copper
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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Characteristics and utilisation of copper slag—a review
Another industrial waste that can act as a suitable alternative for natural river sand is copper slag which is an industrial by-product generated during the manufacturing process of copper.Web
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Environmental and Socioeconomic Impact of Copper …
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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Advances in recovery of valuable metals and waste heat from copper slag
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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UG-Mat Nonferrous Slags | Recycled Materials Resource Center
Copper Slag Shape and Texture: Air-cooled copper slag aggregates are black in color, and typically have a glassy appearance. Granulated copper slag aggregates are similar to air-cooled copper slag aggregates but more vesicular. Gradation: Reverberatory copper slag can be processed into coarse or fine aggregate material for use in hot mix asphalt.Web
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SUSTAINABILITY OF COPPER SLAG PROCESSING FROM …
Approximately 24,6 million tons of copper slag is generated each year from world copper production (Gorai et al., 2003). It is usually disposed in uncovered dumps in the vicinity …Web
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Cleaner recycling of iron from waste copper slag by using walnut …
Copper slag is the by-product of the copper pyrometallurgy process, with an annual output of about 68.7 Mt from the global copper industry (Sharma et al., 2017). Copper slag can be disposed when copper content in slag is reduced to below 0.5 wt%.Web
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Destructive and Non-Destructive Testing of the Performance of Copper
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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Review on Comprehensive Recovery Valuable Metals and
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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Copper Slag of Pyroxene Composition as a Partial …
copper slag increased compressive and tensile strength by 11% and 12%, respectively. The increase of the replacement percentage of natural aggregate with copper slag gradually increased concrete density [19]. Recently, copper slag has been used as a replacement for cement, e.g., in the production of cement clinker [20,21], and as a …Web
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Behavior of Copper and Sulfur During High-Temperature
The sulfide phase also includes a portion of the copper contained by the slag. The mechanism of this process can generally be described as follows. Copper is known to be present in slag as a mechanical suspension of matte drops and as dissolved Cu 2 S and Cu 2 O. As FeS precipitates as the sulfide phase, matte drops suspended in the slag are ...Web
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Pressure Leaching of Copper Slag Flotation Tailings in …
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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A Review of Comprehensive Utilization of Copper Slag of China
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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Characterization of copper slag for beneficiation of iron and copper
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 base metals in the slag can be processed at BCL with …Web
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Improved Settling Mechanisms of an Industrial Copper Smelting Slag …
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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Study on thermal analysis kinetics of copper slag reduction
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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Slag Metallurgy and Metallurgical Waste Recycling | JOM
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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SUSTAINABILITY OF COPPER SLAG PROCESSING FROM NEW
The projected capacity of the copper slag processing is 340.000 tons per year with an average copper content of about 2 %. This amount of copper slag will be obtained from 290.360 tons/ year from the Flash process technology with copper content of 1,4 % and 49.640 tons/year from PS converter with copper content of 6 % (Sokolovic et al., 2015).Web
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Study on Mechanism of Oxidation Modification of Copper Slag
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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Element Distribution and Migration Behavior in the Copper Slag
Copper slag is a solid pollutant with high recyclability. Reduction and separation are regarded as effective disposal methods. However, during the melting process, the separation and migration behavior of elements in the copper slag is complicated. Thus, the formation of pollutants cannot be controlled merely by optimizing the operation …Web
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A Study on Reduction of Copper Smelting Slag by Carbon for …
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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Study on Preparation of Oxygen Carrier Using Copper Slag as …
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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Mineralogy of Metallurgical Slags | SpringerLink
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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Copper Slag
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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