As a global analysis of the foregoing, it is estimated that despite the fact that slag production in gold industry is not as big compared with steel and copper industries, these slags could be recycled provided the level of toxic elements in them, mainly PbO 2 This paper focuses on copper slag which is generated by pyrometallurgical concentration of copper ores to produce copper/nickel matte by Bamangwato Concession Limited (BCL) in Botswana. BCL is a Environmental and Socioeconomic Impact of
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An integration of pyrometallurgy and hydrometallurgy for processing of copper smelter slag involving roasting followed by water or acid leaching is by far the From the annual Cu concentrate smelter production capacity, which is equal to around 21 Mt of copper metal in 2021, it can be estimated that more than 45 Mt Sustainable and Comprehensive Utilization of Copper Slag: A
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Full size image. The copper content of copper slag is 0.5–4.5% or even higher, which is much higher than the 0.2–0.3% mining grade of copper mines in China. Abstract: Copper slag is generated when copper and nickel ores are recovered from their parent ores using a pyrometallurgical process, and these ores Environmental and Socioeconomic Impact of Copper
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Depending on the distribution of gold and copper in the ore body, there may be the ability to selectively mine the deposit to produce one or more of the following feed Ore processing is by conventional cyanide heap leaching, which produces a pregnant leach solution (PLS) containing 1–2 ppm of gold, together with 1000 ppm or Copper–gold ore processing with ion exchange and SART technology
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An innovative, economical, and environmentally sound hydrometallurgical process has been proposed for recovering Cu, Ni, and Co from copper-rich converter slag by organic acids. In the leaching The successful operation of Anglo Asian Mining’s Gedabek process plant, which uses a unique combination of ion exchange for gold extraction and SART Copper–gold ore processing with ion exchange and SART
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In this study, a novel method to recover copper, zinc and iron from copper slag by SO 2 –O 2 roasting-leaching-magnetic separation was proposed. The effect of roasting experiment conditions were roasting temperature of 900 °C, holding time of 120 min, and φ SO2 (The volume fraction of SO 2 in the mixed gas of SO 2 and O 2) of One of the greatest environmental challenges in metal extraction is the generation of a large amount of slag. Most of these slags contain insufficient amounts of valuable metals for economical revalorization, but these concentrations may be harmful for the environment. At present, more than 80% of the global copper products are obtained Feasibility of Recovering Valuable and Toxic Metals from Copper Slag
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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 Numerous slags are produced as a second stream which is not desired in various metallurgical processes, e.g., copper slag (CS) from smelting and processing of copper ore [1,2].The main mineral ore source for copper is chalcopyrite (CuFeS 2), with the smelting process contributing approximately 80% of the global copper production from Environmental and Socioeconomic Impact of Copper Slag
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1 天前Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday use.The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and 2. Production of geochemically scarce elements from copper ore and the valorization of matrix materials that are co-outputs of copper ore processing. 3. Co-production of copper and other geochemically scarce elements from end-of-life products, especially end-of-life electric and electronic equipment and car electronics. 4.Full article: Is Near-zero Waste Production of Copper and Its
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The elemental content of the copper smelting slag was analyzed using an inductively coupled plasma emission spectrometer (ICP-OES), and the results are given in Table 1. The Zn and Pb contents were 2.80 and 0.45 wt.%, respectively. The phase composition of the copper smelting slag was determined using X-ray diffraction (XRD).One of the stages of extracting gold and platinum from sulfide materials and circulating slags is the melting stage in ore-thermal and electric furnaces, where the melt is separated into matte and slag. Gold, platinum, and non-ferrous metals are concentrated in the matte. However, a significant portion of them ends up in the slag, which reduces Transfer of Gold, Platinum and Non-Ferrous Metals from Matte to Slag
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The ore is then ground finely before the copper-bearing sulfide minerals are concentrated by a flotation process which separates the grains of ore mineral from the waste material, or gangue. Depending on the type of copper bearing minerals in the ore and the treatment processes used, the concentrate typically contains between 25 and 30% 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 Minerals Free Full-Text Recovery of Iron from Copper Slag
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Extraction of Iron from Copper-Plant Slag A. A. Lykasov*, G. M. Ryss**, D. G. Sharafutdinov, and A. Yu. Pogodin South Ural State University, Chelyabinsk, Russia *e-mail: [email protected] **e-mail: [email protected] Received February 25, 2015 Abstract—In the production of copper from sulfide ore, slag accumulates at the Approximately 75 percent of the copper concentrate ends up as slag. The other layer, called "matte copper," consists of copper, iron sulfide and other metals. Converting: Finally, matte copper is converted into a copper-rich slag, which is then returned to the leaching process and separated from “blister copper," which is sent to anotherTENORM: Copper Mining and Production Wastes US EPA
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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 The copper concentrate is submitted to the smelter and converter, creating matte, white metal and blister copper, and slag in several steps. The slag is normally submitted to a slag cleaning process including another comminution, flotation and smelting cycle, while the final slag is discarded.The fate of molybdenum in the residues of a Chilean copper ore
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The authors describe the opportunities of low-grade sulfide ores and mine waste processing with heap and bacterial leaching methods. By the example of gold and silver ores, we analyzed specific issues and processing technologies for heap leaching intensification in severe climatic conditions. The paper presents perspectives for heap Full size image. The copper content of copper slag is 0.5–4.5% or even higher, which is much higher than the 0.2–0.3% mining grade of copper mines in China. The total iron content in copper slag is about 40%, which is significantly higher than the mineable grade of iron ore in China (TFe > 27%) [ 10 ].A Review of Comprehensive Utilization of Copper Slag of China
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Copper slag is a by-product obtained during smelting and refining of copper. Copper smelting slag typically contains about 1 wt.% copper and 40 wt.% iron depending upon the initial ore quality andThe smelting slag from the copper smelting process generally holds a certain amount of Cu and Fe (Li et al., 2021). to the fact that the anode slime recycling would avoid the process of ore mining and with fewer impurities than gold ore, thus significantly reducing the raw material consumption and energy input of the process.Life cycle assessment of valuable metal extraction from copper
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