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Abstract. Silicate slags produced from smelting copper concentrates contains valuables such as Cu and Fe as well as heavy metals such as Pb and As which are considered hazardous. In …
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Increased demand of copper in the last few decades resulted in the generation of a large amount of smelter slag. About 80% of the world's copper to date was produced from sulfide ores by concentrating followed by the pyrometallurgical operations such as smelting and refining (Heimlich et al., 2010, Fan et al., 2014).
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Return to Menu . PROCESS DESCRIPTION. The figure shown below schematically describes the Mitsubishi Process, illustrating its sequence of continuous and controlled smelting of copper concentrates, coal, and flux; the …
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Copper slag contains many useful metals and slag making oxides, which can be recovered and recycled by a high temperature direct reduction process. The laboratory scale tests show that by suggested high temperature direct reduction of copper slags two products can be obtained, a Fe–Cu–C alloy with precious metals content and an inert slag ...
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Therefore, in the present work, catalytic pyrolysis of waste paper using copper slag as the catalyst was conducted using the design of experiment. The pyrolysis liquid yield model and the bio-oil viscosity model were established. ... Fig. 5 (a) shows the curved surface diagram and the contour map, in which the pyrolysis liquid yield is affected ...
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The efficiency of the process was determined on the basis of the degree of copper removal from primary slag, determined by the relationship: ξ = C C u 0 − C C u t C C u 0 ⋅ 100 % where: C 0 Cu – initial concentration of copper in the slag, wt.%, and C t Cu – final copper concentration after slag treatment, wt.%.
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In this study, our primary focus centers on evaluating the compressive and flexural strength of copper tailings-granulated blast furnace slag (CT-GBFS) geopolymer at 7 days and 28 days of curing. Mechanical property assessments were conducted using an electronic compression and flexural testing machine [37]. For the compressive strength tests ...
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Processing of Waste Copper Converter Slag Using Organic Acids for Extraction of Copper, Nickel, and Cobalt ... Pourbaix Diagram of Copper-Citrate System . 0. 10. 20. 30. 40. 50. 60. 70. 80. 90 ...
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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 ...
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Download scientific diagram | SEM diagrams of copper slag. (A) Initial copper slag. (B) 900OX. (C) 1000OX. (D) 1100OX. from publication: Study on Preparation of Oxygen Carrier Using Copper Slag as ...
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Typically, approximately 2.2–3.0 tons of copper slag can be obtained by producing one ton of copper, and it is estimated that ~24.6 million tons of copper slag is produced annually . There are 30–50 wt% Fe, 0.5–2.1 wt% Cu, 25–35 wt% SiO 2 and ~1 wt% Zn in the copper slag [7,8,9,10]. Therefore, the recovery of valuable components in ...
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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 slag can be used …
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Gonz´alez et al. Fig. 3. Ternary system CaO–SiO2–Al2O3[15]. reduction process for copper slags treatment was sug-gested and indicated in Fig. 1 as shadow area situated
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Using low-value solid waste blast furnace slag as a catalyst carrier, the active component N (N = Fe, Co, Ni, Cu and Ce) was loaded by impregnation method to study its effect on the denitration ...
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Predominant area diagram for Cu, Cu 2 O, and CuO formation. ... and the molten slag was used to prepare rock wool using a thread-making machine. Download: Download …
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The apparatus for reduction experiments is shown in Fig. 3.Reduction experiments were performed in an electric tube furnace. An alumina crucible containing 300 g of copper slag was placed in the furnace, heated to 1250 °C under a protective N 2 atmosphere and held for 30 min after which the mixed gas, consisting of 70% H 2 –30%N 2, was injected …
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Research has shown that copper slag, a by-product of copper refining, can be utilized as a material substituting cement. Mortars with copper slag exhibit increased strength, attributed to the decrease of capillary porosity due to the presence of slag grains [22], [23], [24]. CMT from the Sungun copper mine (Iran) were partially used to replace ...
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Concrete is the most produced construction material in the world and has a close tie to carbon dioxide emissions. To reduce the gas pollution and resource drain of cement production and utilization, researchers have replaced some of the cement and natural aggregate content with industrial by-products such as steel slag, ferronickel slag, copper tailings, and copper slag.
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Experiments were carried out in a slag cleaning electric furnace to reduce magnetite in copper smelting slag using petro-diesel or biodiesel produced from waste cooking oil, and the reduction ...
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Copper smelting slag (CSS) are waste slag obtained from smelters after reusing sulphur smelting slag. ... strength of the cement mortar specimens was evaluated with a microcomputer-controlled compressive and flexural machine (YAW-3000, China). ... The flowchart and system boundary diagram of this technology and the conventional technology …
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Reduction. The reduction process for copper slag is typically followed by magnetic separation [].Depending on the temperature and intensity of reduction, it can be classified as direct reduction, deep reduction, and smelting reduction []monly used reducing agents include coke, biomass carbon, and natural gas [31, 32].The reduction process converts ferrous olivine in copper slag …
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1. Introduction. Copper slag (CS) is one of the main solid wastes produced in copper smelting industry, mainly composed of Fe 2 O 3, SiO 2 and Al 2 O 3 [1], [2].The annual discharge of CS in China has reached 50 million tons [3].At present, the disposal of CS is dominated by landfill [4].However, with the excessive consumption of land resources, and the …
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The raw material, hazardous waste copper slag, used in this paper was collected from a tin smelter in Yunnan Province, China. The chemical composition of the copper slag was determined by inductively coupled plasma atomic emission spectrometry (ICP–AES), and the results are presented in Table 1. The main valuable metals were Sn, Cu and S, and ...
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Reduction. The reduction process for copper slag is typically followed by magnetic separation [].Depending on the temperature and intensity of reduction, it can be classified as …
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Among them, the board making machine is used to make photoresist film, etching machine is used to etch off the excess copper foil, drilling machine is used to drill holes, coating machine is used to cover the welding film, welding equipment is used to carry out the installation of components and welding, testing equipment is used to carry out ...
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Copper slag is the result of copper processing waste in the form of sandy material and plastic with various types of PET, that can be found in waste. Therefore, the objective of this study is to calculate the technical strength of the concrete beam with additional material in the form of 30% copper slag and variations of the
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11.2 Mechanically Stabilised Copper Slag Subgrade and Sub Base 30 11.3 Mechanically Stabilised GSB and WMM Layers with Copper Slag 31 11.4 Construction Methodology for Bituminous Mixes with Copper Slag 31 12. Quality Control Tests 31 12.1 Copper Slag Embankment and Subgrade 31 12.2 Copper Slag GSB, Cement Stabilised Base/Sub base, …
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Key to implementing modifications aimed at improving the copper slag reduction process is a thorough understanding of its kinetics and thermodynamics. Electric resistance furnaces are used for this process, and for more intensive copper removal, arc resistance furnaces are used.
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Download scientific diagram | Primary copper flowsheet showing the composition of the smelting slag, while exergy is represented. ... metal parts [119], e-waste [120], and disassembly/recycling ...
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Utilization of ground copper slag (GCS) as cementing material has been investigated. ... it can be observed that the diagram slope indicating the residual compressive strength reduction is higher and more evident than when the temperature rises from 700 °C to 800 °C as compared to increasing temperature from 600 °C to 700 °C. SCC30 design ...
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