Copper Slag Use In China
Life Cycle Assessment of Recycling Copper Process from Copper-Slag
The predigestion life cycle assessment (LCA) method has been applied to investigate the environmental impact of recycle copper process from copper-slag. Related environmental load data of each process stage have been obtained. Copper-slag recycle copper process includes crushing, milling, flotation, dehydration. Environmental impact single data of …
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A Review of Comprehensive Utilization of Copper Slag of China
In China, the accumulation of copper slag is over 200 million tonnes, which has become a great challenge to the sustainable development of the copper industry [6]. …
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Copper recovery from copper slags through flotation …
In previous years, numerous methods have been developed on the recovery and utilization of valuable metals in copper smelting slags, which can be summarized as pyrometallurgy [26], hydrometallurgy [27] and flotation [28].Through pyrometallurgy of copper slags, the precipitation of suspended matte (Cu 2 S) droplets is promoted into the matte layer …
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High-valued and deep utilization technology of copper slag
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 XRD and chemical analysis. …
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Smelting reduction and kinetics analysis of magnetic …
SCIENTIFIC REPORTS ã 2406 1.13s41-1-2-y 1 Smelting reduction and kinetics analysis of magnetic iron in copper slag using waste cooking oil Bo Li1, Xubin Wang2, Hua ...
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Turning waste into wealth: Synergistic recovery of …
A study published in Transactions of Nonferrous Metals Society of China detailing a novel method for the recovery of copper, lead, and zinc from copper smelting slag using a sulfurization-reduction approach.This innovation …
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The potential for copper slag waste as a resource for a …
Copper slag waste is considered a potential world resource owing to the huge amounts being produced annually worldwide which contain significant amounts of valuable metals (Phiri et al., 2021). The global copper slag production is estimated at 752 million tons for the period between 1999 and 2019 from the 13 main producing countries (Fig. 2).
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Hydration properties of alkali-activated quick cooled copper slag …
The hydration properties of quick cooled copper slag (QCS) and slow cooled copper slag (SCS) activated with 4% and 8% (by Na2O mass) sodium hydroxide (NA) and water glass (NS) were investigated by hydration heat. Meanwhile, the hydration degrees and hydration products of alkali-activated copper slags were determined by X-ray diffraction, Fourier …
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A Review of Comprehensive Utilization of Copper Slag of …
Copper slag is a potential resource because it contains significant amounts of valuable metals such as copper (1.19 wt% Cu), cobalt (0.48 wt% Co), silver (1.67 wt% Ag), …
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Beyond linear narratives: Complex copper ore
Request PDF | Beyond linear narratives: Complex copper ore exploitation strategies in Early Bronze Age China revealed by geochemical characterization of smelting remains | Despite decades of ...
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Turning waste into wealth: Synergistic recovery of metal from copper slag
A study published in Transactions of Nonferrous Metals Society of China detailing a novel method for the recovery of copper, lead, and zinc from copper smelting slag using a sulfurization-reduction approach.This innovation represents a significant stride in metallurgical waste management, with potential impacts on both industry practices and environmental …
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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. Therefore, the recovery of iron from CS utilizes a valuable metal and alleviates the environmental stress caused by stockpile. In this paper, a new method has been developed to …
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Recovery of Iron from Copper Slag Using Coal-Based Direct …
The Fe3O4 and Fe2SiO4 in copper slag were successfully reduced to metallic iron by coal-based direct reduction. Under the best reduction conditions of 1300 °C reduction temperature, 30 min reduction time, 35 wt.% coal dosage, and 20 wt.% CaO dosage (0.75 binary basicity), the Fe grade of obtained iron concentration achieved 91.55%, and the Fe recovery …
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A Review of Comprehensive Utilization of Copper Slag of …
Zinc in copper slag occurs in zinc-iron spinel with content of 1–3% [8], besides, lead exists in copper slag in the form of lead alum (PbSO4) [9]. The copper content of copper slag is …
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Synergistic environmental benefits from copper slag recycling in China …
CS primarily originates from the waste slag produced during the copper smelting process using the pyrometallurgical method. CS represents a valuable secondary resource (Tian et al., 2021), with its recycling increasingly recognized as crucial for mitigating environmental risks and alleviating mineral resource shortages (Gu et al., 2023; Lv et al., 2024).
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Environmental and Socioeconomic Impact of …
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 …
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Practical experience to theoretical innovation: A model for …
The copper smelting slag (CSS) utilized in this study was sourced from a copper smelter located in Xinjiang, China. In order to gain a deeper understanding of the mineral composition of the CSS and the distribution of metal elements, X-ray diffraction (XRD) phase analysis was performed, with the outcomes presented in Fig. 4 a.
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Synergistic environmental benefits from copper slag …
Given that each ton of copper produced generates approximately 2.2 tons of copper slag (CS) (Gabasiane et al., 2021), China's copper industry produces over 20 million tons of CS annually, with cumulative stockpiles exceeding 300 million tons (Zhu et al., 2020). Therefore, the …
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Comparison of environmental performance of modern copper …
Related to the slag copper content, based on the industrial experience and data, the distribution of copper to compounds in the slag phase was described as a fraction of copper in copper oxide present after slow cooling of the slag as function of matte grade. ... The practice of copper matte converting in China. Miner. Process. Extr. Metall ...
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Utilization of copper slag in cement and concrete
The use of copper slag as a pozzolanic material for a partial substitute for ordinary Portland cement and its effects on the hydration reactions and properties of mortar and concrete have been reported in several publications (Al-Jabri et al., 2006, Taha et al., 2007, Malhotra, 1993, Tixier et al., 1997, Ariño and Mobasher, 1999, Douglas and Mainwaring, 1986, Deja and …
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Environmental risks for application of iron and steel slags in …
It is estimated that the annual production of steel slag, copper slag, ferronickel slag, and lead-zinc slag each year worldwide is 200 million tons, 70 million tons, 150 million tons, and 25 ...
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Transactions of Nonferrous Metals Society of China
Trans. Nonferrous Met. Soc. China 30(2020) 2823âˆ'2835 Assessment of selective sequential extraction procedure for determining arsenic partitioning in copper slag Hui-bin ZHANG1, Yu-zheng HE1, Jing-jing HU1, Ya-nan WANG1, Hua-zhen CAO1, Jun …
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Cropping With Slag to Address Soil, Environment, and Food …
The influence of slag fertilizer on the soil microbiome are diverse and the possible mechanisms of slag-microbes interactions can be as follows: (1) slag fertilizer supplies nutrients not only to the plant but also to soil microorganisms; (2) slag fertilizer modifies soil microbial habitats by improving soil properties (e.g., increasing soil pH ...
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Evidence of arsenical copper smelting in Bronze Age China: …
However, metal prills trapped in the slag are mainly arsenical copper with high iron content (3.1 wt% in average). ... The site provides important reference material for the study of early arsenical copper production in China. Dated to the early second millennium BC, Xichengyi is one of the earliest copper smelting sites excavated in China so ...
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Leaching of blended copper slag in microwave oven
Trans. Nonferrous Met. Soc. China 27(2017) 1404âˆ'1410 Leaching of blended copper slag in microwave oven M. Deniz TURAN1, Z. Abidin SARI1, Jan D. MILLER2 1. ... be recovered economically. Also, it is difficult to recover valuable metals from these slags using froth flotation. The copper slag used in this study is a blended slag (BS) that is ...
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Sustainable and Comprehensive Utilization of Copper Slag: A …
Annually more than 400 Mt of metallurgical slags are produced worldwide [1,2,3,4,5].From the annual Cu concentrate smelter production capacity, which is equal to …
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Steel slag in China: Treatment, recycling, and management
As shown in Fig. 5, the statistics from 129 of China's steel plants in China suggest that 45.7% of these steel plants use self-disintegrated steal slag by steam, and most of them are large enterprises with new steel slag treatment lines (Zhang and Xu, 2014). The data show that 39.5% of these steel plants use the layer pouring process, and ...
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Characterization, Concentration, and Speciation of Metal …
The treatment of large amounts of copper slag is an unavoidable issue resulting from the high demand for copper during the global transition to a sustainable development path. Metal-rich copper slag might serve as a potential source of metals through secondary recovery. In this study, two copper slags (CS1 and CS2) with different metallurgical properties were …
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Synergistic environmental benefits from copper slag recycling in China …
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. Online ahead of print. Authors Yi Zhang 1 ...
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Copper Smelting Slag Cleaning in an Electric Furnace by …
Four different phases in the slag sample can be observed by using an electron probe X-ray microanalyzer (EPMA), as shown in Figure 1.The fayalite phase with a long strip shape is the base of the slag; the white grey particles consisting of copper, iron and sulfur elements are the matte phase, which has a large particle size (> 100 μm).Many magnetite …
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