Efficient Recycling of Valuable Metals from Waste Copper …
In this work, an innovative and carbon-free smelting reduction process is proposed to recycle valuable metals from waste copper slag using secondary aluminum dross as a …
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Recycling of Stabilized Copper Slag Waste for Sustainable …
Copper slag is a voluminous solid waste byproduct from copper extraction, often underutilized and accumulated in deposits. This paper presents the details of a pilot study conducted to explore the use of copper slag in road embankment construction. Physical, chemical, and geotechnical characterization of copper slag with and without stabilization …
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Synergistic Environmental Benefits from Copper Slag Recycling …
Moreover, recycling copper slag for cement production demonstrates the greatest synergistic effects in terms of reducing both air pollution and carbon emissions. These benefits mainly arise from substituting high-pollution materials with recycled copper slag. Drawing on the assessment results, our study offers practical suggestions for ...
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Turning waste into wealth: Synergistic recovery of …
The research from Central South University presents a significant advance in metal recycling technology, particularly for copper, lead, and zinc recovery from copper smelting slag. Using pyrite as a sulfurizing agent, this …
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Assessing the Life Cycle Environmental and Economic …
The functional unit was defined as the recycling of 1 ton of copper slag. The results showed that the process of production of cement after floatation was the optimal scenario for copper slag recycling, and its life cycle impact and life cycle cost were-67.22 Pt and-479.28 yuan, respectively. Specifically, the dominant environmental impact ...
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An efficient approach to utilize copper smelting slag: …
In the smelting and conversion processes of copper manufacturing, copper slag with 2–3 times of crude Cu is produced (Phiri et al., 2022, Zhou et al., 2022).Therefore, annual copper slag emissions have exceeded 50 million tons, even though the annual global Cu output is 23 million tons.
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Direct reduction of copper slag using rubber seed oil as a …
The process of recycling Fe from copper slag produces new secondary waste residue. Secondary waste residue can be used as a partial starting material for the synthesis of glass-ceramics. The reduction reaction mechanism of copper slag is transformed with increasing temperature. Limiting surface reaction (n = 2) is the restrictive step for the ...
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Life cycle assessment of valuable metal extraction from copper
The main explanation is that copper slag recycling bypasses the mining process which effectively avoids the stage of high energy consumption and high pollution. Meanwhile, smelting slag has a greater copper grade, higher density, less slime, and a faster particle settlement rate than copper ore. As a result, to produce 1000 kg of copper ...
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High-efficiency recycling of copper-cadmium slag by …
Abstract Copper-cadmium slag, a kind of hazardous metallurgical solid waste, has attracted attention in the fields of environmental protection and resource recovery because of its high output and richness of valuable metals.
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Characteristics and utilisation of copper slag—a review
Copper slag is a by-product obtained during matte smelting and refining of copper. The common management options for copper slag are recycling, recovering of metal, production of value added products such as abrasive tools, roofing granules, cutting tools, abrasive, tiles, glass, road-base construction, railroad ballast, asphalt pavements.
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How To Start Your Copper Recycling Business. The Very …
Shredder material, copper slag and copper dust is smelted, reduced and refined. Copper recovery from Electronic scrap is complex and has low copper content. Copper recovery is also done from residues of other processes. These are called copper slag, dust and sludges. Mostly these are internally recycled within the plant.
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New residue-free processing of copper slag from smelter
An interesting processing proposal was developed for the recycling of copper slag from the copper production in Lubumbashi (Congo) with a total amount of 14 M t (Banza Numbi, 2000). Through the combination of sulfuric acid digestion of un-milled copper slag (grain size distribution < 10 mm with 1.35% Cu, 0.86% Co, 12.53% Zn, 100 ppm Ge ...
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Carbothermal reduction of copper smelter slag for recycling …
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).While slag from blast furnace in iron making has found …
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Sustainable and Comprehensive Utilization of Copper Slag: A …
Within this paper, application options, the environmental behavior, and ways to treat copper slag in order to remove hazardous and recover valuable metals are critically …
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Slag Management Services | Harsco Environmental
Tailored services designed to embrace the entire slag management process, including safe and efficient slag pot carrying, cooling and maintenance. Tailored services designed to embrace the entire slag management process, managing all elements of risk and recovery.
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Value-added utilization of copper slag to enhance the …
1. Introduction. Copper slag (CS) is a byproduct of the production of copper metal. It has been reported that approximately 2.2–3 tons of CS are generated during the production of 1 ton of copper (Sharma and Khan, 2017; Siddique et al., 2020).The main chemical components of CS are Fe 2 O 3, SiO 2, Al 2 O 3 and CaO (Liu et al., 2019; Wang et al., 2020).
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Synergistic environmental benefits from copper slag recycling …
DOI: 10.1016/j.jenvman.2024.122907 Corpus ID: 273366482; Synergistic environmental benefits from copper slag recycling in China: Pollutant mitigation and carbon reduction. @article{Zhang2024SynergisticEB, title={Synergistic environmental benefits from copper slag recycling in China: Pollutant mitigation and carbon reduction.}, author={Yi Zhang and Yiting …
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Recycling copper slag in steel fibre concrete for sustainable
The quenching i.e. rapid cooling method generates sand like particles of copper slag whereas air-cooling method generates coarser copper slag. Fineness modulus of copper slag used in the present study was 3.11 against 2.92 of river sand. Copper slag and river sand have 0.8% and 4.9% particles finer than 150-μm sieve, respectively.
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Current challenges in copper recycling: aligning insights …
After analyzing the copper recycling chain and its three steps waste collection, ... The legal requirements for slag recycling (e.g. cement, gravel) have been tightened progressively in recent years. A trend that is expected to continue in the future. A further reduction of impurities in the slag massively increases the necessary energy input ...
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Method and system for coupling copper slag recycling with …
In the present application, the recycling of copper slag can be coupled with an existing CO2 mineralization process based on industrial solid waste. Organic combination of different production lines is achieved for reformed slag, flue gas, etc., and the method is green and clean; moreover, the selection range and the acquisition manner of a CO2 ...
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Efficient recovery of copper from copper smelting slag by …
Copper smelting slag (CSS) is a typical bulk industrial solid waste generally produced during the matte smelting and blowing smelting process of the copper sulfide concentrate [1], [2], [3].Currently, for every metric ton of metallic copper produced, approximately 2.2 ∼ 3.0 metric tons of CSS are generated.
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The Role of Copper Slag Blasting in Surface Coating | Blastgrit
Recycling and reusing copper slag can also reduce waste, decrease the cost of disposal, and reduce the amount of abrasive required. Copper Slag Blasting Applications. Surface Preparation for Industrial Coatings and Paints. It strips away rust, old layers, and tough contaminants. It leaves behind clean, roughened surfaces.
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Efficient Recycling of Valuable Metals from Waste Copper Slag …
In this work, an innovative and carbon-free smelting reduction process is proposed to recycle valuable metals from waste copper slag using secondary aluminum dross as a reductant. Experimental and thermodynamic investigations were carried out to understand the reaction and separation process and its correlation with smelting temperature, modified …
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The potential for copper slag waste as a resource for a …
To address these challenges, recycling and repurposing of copper slag waste using innovative technologies should be considered, creating a resource for a circular …
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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 …
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Synergistic environmental benefits from copper slag recycling …
Synergistic environmental benefits from copper slag recycling in China: Pollutant mitigation and carbon reduction. Synergistic environmental benefits from copper slag recycling in China: Pollutant mitigation and carbon reduction J Environ Manage. 2024 Oct 14:370:122907. doi: 10.1016/j.jenvman.2024.122907. ...
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Why process metal slag at all?
Slag and spent refractories from copper and high grade steel smelters. ... Recycling metal slag is also good for the environment. Processing this material creates both environmental and economic advantages as it prevents the rare and valuable alloying elements from being wasted. Leading high grade steel producers across Europe now use LEGRAN ...
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SUSTAINABLE CONSTRUCTION
Copper slag recycling and processing plant During blasting, copper slag breaks into smaller particles on impact with metal surfaces. After several rounds of reuse, the copper slag gets contaminated with rusts and paints and becomes a waste material but without any change in its chemical composition. The
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Slag recycling
The 2015 recovery quantities for blast furnace slag are shown in Fig. 15. Granulated slag makes up 86 %, of which almost the entire amount is used in the cement industry. The fields of application of the air-cooled slag are mainly in road construction and other uses in the construction industry. 4 Trends in slag recycling
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Copper Slag Processing Line
Introduce Copper Slag Processing. Copper slag is the solid waste slag produced when smelting copper metal, these waste slags contain a certain amount of copper metal particles, depending on the smelting process, the copper metal content is also different.
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