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Copper Smelter Dust (CSD) Copper smelter dust is the product consisting of SO 2,N 2,O 2, water vapor, heavy metals and other impurities recovered from exhaust gas streams found in furnaces, flues and settling chambers as a result of roasting, smelting and converting opera-tions from copper refining processes as illustrated on Fig. 2 [17, 22, 23].
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The separation of Cu, Pb, Zn, and As from copper smelting dust through oxidative alkali leaching and sulfide precipitation, as well as the subsequent recovery of As through calcification ...
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Granulated steelmaking dust with reducer (coal dust) was the input material. The products of the process are zinc oxide, iron alloy and slag, with properties meeting high ecological …
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The waste copper smelter dust (CSD) is a rich secondary resource for copper as shown by the chemical composition of the South African Palabora coppers smelter plant CSD that …
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In this study, the Ag and Cu evolution in the sintering dust was extracted by chlorination roasting process, and the mechanism of the process was analyzed by atomic absorption spectroscopy, X-ray fluorescence, X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectrometry. In addition, in order to better understand the …
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slags, flue gases, and flue dust.4 Copper smelting open-circuit (CSO) dust is an important by-product of the copper smelting industry with the output accounting for approximately 5–10% of total input.5 The dust normally contains desirable metals (Cu, In, Pb, Zn, Sb, and Bi) as well as unfavorable toxic elements (As and Cd), thereby ...
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Recovery of metal values from copper converter flue dust. Advanced Search. ... tin, lead, and copper. The dust was leached with a hot solution of ammonium chloride and ammonium hydroxide to solubilize zno. All of the tin (as sNO2) and the metallic copper, lead, and zinc, as well as possible insoluble compounds of each, report to the residue. ...
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Particle size analysis of dust by screening and syclosizer showed that about 80% of dust particles are finer than 80 μm. The average copper and iron content of dust was 29.15% and 22.23% and the main copper sulphide minerals were chalcocite (16.36%), chalcopyrite (2.6%), bornite (2.58%) and covellite (0.08%), respectively. In addition to ...
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The recovery of metals without generating secondary waste is a critical focus in the management of hazardous copper smelting dust. To tackle the challenges associated with arsenic-containing solid waste and waste acid generated by traditional recycling processes, we propose a two-stage roasting process that prioritizes low …
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Copper Smelter Dust (CSD) Copper smelter dust is the product consisting of SO 2, N 2, O 2, water vapor, heavy metals and other impurities recovered from exhaust gas streams found in furnaces, flues and settling chambers as a result of roasting, smelting and converting operations from copper refining processes as illustrated on Fig. 2 [17, …
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In this method recovery of bismuth from copper flue dust was carried out after copper and iron separation. To separate copper from dust, this material was leached with water and dilute sulfuric acid (0.6 M). Magnetic separation was performed with field intensities of 0.1 T and 0.4 T to separate iron in the leaching residue. 70 % of bismuth is ...
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The phase composition of the dust produced during copper smelting is complex and fluctuates considerably.15 Nevertheless, valuable metals can be recovered from copper smelting dust and recy-cled. In general, the processes for the comprehen-sive utilization and treatment of copper smelting dust resources can be classified into …
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This work introduced a method for processing copper smelting flue dust, involving a two-step roasting, beginning with the low-temperature removal of arsenic, followed by high …
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Copper smelter flue dust is a residue, rich in zinc, originating from the pyrometallurgical process of copper, and constitutes a potential raw material for zinc production.
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In this study, a clean and efficient hydrometallurgical process was developed to recover Cu, Zn, Cd, Bi and Pb from the CSO dust with waste acid. By waste acid leaching, most of …
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The results of the effect of agitation rate on zinc and copper dissolution by 30% H 2 SO 4 with leaching time 10 min and at 35°C investigated in the range of 60–400 rpm with liquid/solid mass ratio of 5/1 are shown in Fig. 1.The presented data show that the recovery of zinc was increased from 60% at 50 rpm to around 93% at 150 rpm and the …
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In this method recovery of bismuth from copper flue dust was carried out after copper and iron separation. To separate copper from dust, this material was leached with water and dilute sulfuric acid (0.6 M). Magnetic separation was performed with field intensities of 0.1 T and 0.4 T to separate iron in the leaching residue. 70 % of bismuth is ...
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The optimum conditions for copper recovery were obtained (RCA and H 2 SO 4 mass ratio of 1:0.5, leaching temperature of 50 °C, solid–liquid ratio of 40 g/L, ... Hydrometallurgical treatment of copper smelting dust by oxidation leaching and fractional precipitation technology.
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The purpose of this study was to develop a resource recovery procedure for recovering copper and zinc from dust produced by copper smelting furnaces during the manufacturing of copper-alloy wires. The concentrations of copper in copper-containing dust do not meet the regulation standards defined by …
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In this research, an integrated hydrometallurgical process for comprehensive recovery of valued metals and safe disposal of arsenic from copper smelting open-circuit (CSO) …
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Besides metals such as copper, lead, and zinc, arsenic also enters the dust, and untreated dust can easily cause environmental pollution and safety accidents through rainwater washing, leaching, and microorganisms (El Safty et al., 2014; Lilis et al., 1984).Depending on the minerals, smelting dust may contain rare metals such as …
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Because of the higher content of Cu in the dust, it makes economic sense to recover it in the first place. The Cu recovery technique which consists of a H 2 SO 4 leaching followed by an appropriate recovery method has been practiced by several smelters throughout the world. The process parameters vary from smelter to smelter …
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1. Introduction. Copper smelting flue dust (CSFD) is categorized as a hazardous solid waste due to the characteristics of high pollutants content, low specific gravity, and small particle size (Balladares et al., 2014; Chen et al., 2020; Zhou et al., 2021a).Due to the diverse smelting process of copper, the chemical components of …
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The recovery of metals without generating secondary waste is a critical focus in the management of hazardous copper smelting dust. To tackle the challenges associated with arsenic-containing solid waste and waste acid generated by traditional recycling processes, we propose a two-stage roasting process that prioritizes low-temperature roasting for …
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Efficient removal and recovery of arsenic from copper smelting flue dust by a roasting method: Process optimization, phase transformation and mechanism investigation ... Given the above experimental results, a flowsheet is proposed for treating flue dust in the copper smelting process, as shown in Fig. S4. Download : Download …
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However, metal recovery from this flue dust has not been extensively studied. The flue dust can contain valuable metals such as gold, silver, copper, and iron. In this study, the flue dust from e-waste was investigated as the potential metal resource for obtaining valuable metals, including copper and iron, using physical and chemical ...
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Semantic Scholar extracted view of "Recovery of metal values from copper smelter flue dust" by J. Ke et al. Skip to search form Skip to main content Skip to account ..., title={Recovery of metal values from copper smelter flue dust}, author={Jia-jun Ke and Ruifang Qiu and Chia-Yung Chen}, journal={Hydrometallurgy}, year={1984}, volume={12 ...
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It was expected to enrich arsenic in the form of dust prior to copper recovery process. The effects of inert, oxidising, and reducing gas on the removal of arsenic from molten slag were compared. When CO2 was injected, the removal of arsenic was mainly attributed to the oxidation of Cuâ€"As inclusions and arsenic sulphide in the slag. ...
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The treated copper flue dust calcine can be fed back into the smelting furnace for copper recovery, as a high purity arsenic xide byproduct is captured from the off-gas. It can for instance be reduced to elemental arsenic followed by synthesis of arsenic-bearing functional materials and chemicals.
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Copper smelter dust is an ultrafine hazardous waste containing various heavy metallic elements. This manuscript proposed a novel method for efficient recovery of crown zinc and metallic copper from copper smelter dust, including evaporation and condensation of zinc vapor, and super-gravity separation of copper droplets.
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In most cases, arsenic is an unfavorable element in metallurgical processes. The mechanism of arsenic removal was investigated through roasting experiments performed on arsenopyrite-bearing iron ore. Thermodynamic calculation of arsenic recovery was carried out by FactSage 7.0 software (Thermfact/CRCT, Montreal, …
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The Bureau of Mines researched methods for recovering copper from cyclone and electrostatic-precipitator dusts of primary copper smelters as part of its program to …
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The present work presents a circular concept that will be pursued in the HARARE project, based on increasing waste recovery by the use of hydrogen. The project will tackle two example cases: bauxite residue and copper smelter slags. The common theme is to use hydrogen to selectively reduce iron and copper, making it possible to extract these ...
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Selective leaching process for the recovery of copper and zinc oxide from copper-containing dust. Environmental technology, 36 (23) ... M. Tomitia, M. Higashi, S. Oto and H. Okamoto, "Hydrometallurgical Process of Copper Converter dust at the Saganoseki Smelter and Refinery," Residues and Effluents - Processing and …
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The flue dust generated during the processing of e-waste is valuable as a secondary metal resource. In this study, a process of selective metal recovery from flue dust through the magnetic separation and the leaching process were developed. All the experiments were carried out at atmospheric pressure below 60°C.
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The copper flue dust is an important secondary source for various metals and also a potential threat to the environment. ... The influence of system variables on copper recovery by leaching was ...
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Smelter dust from copper extraction plants contains copper (Cu), which is both an economic loss and a pollution issue. There is therefore a need for techniques to recover …
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The volume of CSO dust in typical copper smelting-converting operations has amounted to about 800,000 tons a year. This dust is an important source of valued metals, such as Cu, Zn, Pb and Bi (Chen et al., 2012). ... after copper recovery and arsenic removal. The recovery of Zn and Cd was performed simultaneously by …
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Maximum copper recovery from concentrate and dust was achieved using a moderately thermophilic culture.Under optimum conditions, copper dissolution from concentrate reached 87.52% with moderately ...
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