The studied copper smelting process mainly consisted of three stages, including smelting (SMT), extracting (EXT), and refining (RFN). In the SMT stage, excessive oxygen was added to the furnace, where copper concentrate reacted intensively, and matte, slag, and flue gas were produced under the temperature of about 1200 ℃.
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Secondary copper recovery is attracting increasing interest because of the growth of copper containing waste including e-waste. The pyrometallurgical treatment in smelters is widely utilized, but ...
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Copper concentrate (CuFeS 2) is fed into the furnace along with a flux of silica sand, SiO 2, and oxygen, O 2. The flux is used to control the chemistry of the slag. In particular, it causes the iron (Fe) in the copper concentrate to accumulate in the slag phase, while the copper (Cu), accumulates in the matte phase. Copper Concentrate
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12.9.2 Process Description2,3 Secondary copper recovery is divided into 4 separate operations: scrap pretreatment, smelting, alloying, and casting. Pretreatment includes the cleaning and consolidation of scrap in preparation for smelting. Smelting consists of heating and treating the scrap for separation and purification of specific metals.
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The secondary copper project, namely the "UPOPs Reduction through BAT/BEP and PPP-based Industry Chain Management in Secondary Copper Production Sector in China" project, was carried out in partnership with the Ministry of Ecology and Environment, Foreign Environmental Cooperation Centre (FECO/MEE), Jiangxi EPB, in close collaboration with ...
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The Ausmelt TSL Process offers an integrated solution for copper smelting and converting or it can be coupled with existing site processes. The Ausmelt TSL Furnace can process copper concentrates with a wide range of copper contents and high impurities contents. For copper smelting the Ausmelt TSL Process has been installed in relatively small
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Copper Smelting: To produce bronze, people became adept at smelting copper ores, a process that involves heating copper-rich minerals to high temperatures. Early smelting furnaces were …
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12.11.2 Process Description1-7 Secondary lead smelting includes 3 major operations: scrap pretreatment, smelting, and refining. These are shown schematically in Figure 12.11-1A, Figure 12.11-1B, and Figure 12.11-1C, respectively. 12.11.2.1 Scrap Pretreatment - Scrap pretreatment is the partial removal of metal and nonmetal contaminants from lead-
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copper smelting production process should reach 99%, and the sulfur recovery rate should reach 97.5% or more. (XI) The water recycling rate of copper smelting enterprises using secondary copper-containing resources should reach 98% or more. V. Environmental protection
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Secondary copper smelting processes (SeCu) have previously been identified as an important source of brominated dioxins and furans (PBDD/Fs). Identifying the major stages responsible for PBDD/F formation and emissions is crucial for developing technology to reduce PBDD/F emissions from SeCu, but nothing is currently known in this regard.
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The FDSC used in the experiments was collected from the smelting process from a secondary copper smelter in Jiangxi, China, which utilizes electroplating sludge, copper scrap, and waste circuit boards as the feedstock. ... Selective leaching of arsenic and valuable metals in copper smelting soot strengthened by ball milling pretreatment (in ...
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12.8.2.2 Smelting/Refining - After scrap pretreatment, smelting and refining is performed. Smelting and refining in secondary aluminum recovery takes place primarily in reverberatory furnaces. These furnaces are brick-lined and constructed with a curved roof. The term reverberatory is used because heat rising 12.8-4 EMISSION FACTORS ...
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This article investigates the behavior of tin and antimony, both commonly present as trace elements in electrical and electronic waste, in secondary (i.e., sulfur-free) copper smelting conditions. The experiments were conducted in oxygen partial pressure range of 10−10–10−5 atm, covering the different process steps in copper smelting.
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Flue dust from secondary copper smelting (FDSC) is a hazardous waste as well as a secondary resource due to the high content of Cl, Br, and valuable metals (Pb, Cu, Zn, Cd).
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Investigating the microwave-absorbing characteristics of secondary copper smelting fly ash (SCFA), which is both a hazardous waste and valuable secondary resource, can be expected to expedite the efficient application of microwave heating technology in the comprehensive treatment of fly ash. Here, we have examined SCFA and its pure components, …
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The Kaldor furnace smelting process is currently the mainstream process for treating copper anode slime, but the existence of copper, tellurium and other impurities has adverse effects on the recovery of gold and silver during the Kaldor furnace smelting stage. Therefore, it is necessary to pretreat the copper anode slime to remove these impurities before …
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The secondary copper smelting process includes the ranges of raw material pouring, melting, adjusting, and casting. Raw materials including electrolytic copper, waste brasses and electrolytic zinc are fed into the induction furnace. ... Although insulation of electric cable is separated from brass through pretreatment, some insulation still ...
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The smelting process can be divided into three stages, namely decomposition of high-valence sulphide, oxidation of sulphide, and matte smelting and slagging reaction (Fig. 1).The efficiency of matte smelting and matte-slag separation, as well as the extent of copper losses to slag are mainly affected by the oxidation/reduction potential, matte grade, smelting temperature, slag …
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in secondary (i.e., sulfur-free) copper smelting conditions. The experiments were conducted in oxygen partial pressure range of 10 10–10 5 atm, covering the different process steps in copper smelting. The basis of the equilibrium system was metallic copper–iron silicate slag, with the
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Therefore, it is necessary to pretreat the copper anode slime to remove these impurities before Kaldor furnace reduction smelting. However, the current pretreatment process of copper anode slime ...
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In the last 15 years however, there has been a shift towards secondary copper processing using bath smelting technologies such as the Top Submerged Lance (TSL) and the Top-Blown …
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Copper is one of the most commonly used metals in the world (~ 26 million tonnes each year). 1 Over 85% of copper is produced by a pyrometallurgical process from copper ores or scrap. Copper slag, as a primary by-product, is also produced during the high-temperature smelting process. 2 The slag output is about 2 ~ 3 times that of the refined copper due to the …
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in secondary (i.e., sulfur-free) copper smelting conditions. The experiments were conducted in oxygen partial pressure range of 10 10–10 5 atm, covering the different process steps in copper ...
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Secondary copper recovery is divided into 4 separate operations: scrap pretreatment, smelting, alloying, and casting. Pretreatment includes the cleaning and consolidation of scrap in …
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The effectivity of present copper smelting technologies have their roots in industrial and laboratory-scale experience accumulated over the past decades. ... Ge, In and Sn from waste electric and electronic equipment through secondary copper smelting. Waste Manage. 71(1):400–410 ... Wang L, Yang C. 2007. Intelligent prediction model of matte ...
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profitability of secondary copper refining furnaces. The global depletion of easily accessible primary copper reserves (from mined oxide/ sulphide concentrates) has led to secondary …
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control of process operating conditions during secondary copper smelting is required for the separation of impurities and desired metal values between the various product streams. Secondary Copper ...
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Flue dust from secondary copper smelting (FDSC) is a hazardous waste as well as a secondary resource due to the high content of Cl, Br, and valuable metals (Pb, Cu, Zn, Cd).
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secondary copper materials into a form amenable to smelting. Consumer and e-waste materials usually undergo some form of manual, semi-automated or automated dismantling, mechanical pre-
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Smelting Process for Complex Feed Mixture Christoph Zschiesche, Mehmet Ayhan and Jürgen Antrekowitsch Abstract Managing complex material streams within a lead smelting/reduction ... of secondary copper-lead-tin bearing materials (scrap, shredder material, residues, sludges, e-scrap). Following this step, primary copper business was further
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