Copper smelting open-circuit (CSO) dust contains various valuable metals, such as copper, lead, and zinc, as well as undesirable toxic elements such as arsenic. Thus, the comprehensive recovery of valuable elements from CSO dust is highly significant from both economic and environmental perspectives. In this review, …
XRD and SEM-EDS techniques were employed to reveal phase evolution and surface morphology of the roasted products. Finally, copper-nickel concentrate achieved recovery ratios of 64.37% for copper with a grade of Cu 2.7%, and 67.38% for nickel with a grade of Ni 12.84%.
The process efficiently recovers 98.77% of copper and 97.17% of zinc from the dust. Abstract. The recovery of metals without generating secondary waste is a critical focus …
Recovery of zinc and copper from copper smelter flue dust. Optimisation of sulphuric acid leaching. Abstract. Copper smelter flue dust is a residue, rich in zinc, originating from the …
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 ...
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.
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 …
Semantic Scholar extracted view of "Efficient removal and recovery of arsenic from copper smelting flue dust by a roasting method: Process optimization, phase transformation and mechanism investigation." ... a new type of sulfide precipitant was first prepared and used to realize the selective separation recovery of copper and arsenic …
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 …
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 …
Recovery of zinc and copper from copper smelter flue dust. Optimisation of sulphuric acid leaching. Pablo Gonzalez-Montero., Nieves Iglesias-Gonzalez., Rafael Romero Languages and Computer …
In addition to copper and zinc, the dust contains substantial amounts of lead and arsenic (up to 30%). The computer program Statgraphics was used to plan experiments and analyze the results. ... An increase in temperature from 140 to 160°C increased copper recovery from 66.7 to 87.1%, increased the amount of zinc that was obtained from 33.7 …
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 …
Previous study showed that mesophilic bacteria in batch cultures could easily oxidize the dust copper sulfide minerals with high recovery (Massinaie et al., 2006). Biological dissolution of copper smelter dust using GeoCoat technology was also examined (Jamali Paghaleh, 2006). Thus, bacterial leaching is a hydrometallurgical …
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 ...
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 ...
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 …
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 ...
Adhering to this legislation often presents a challenge, because most copper mining businesses work on a linear economic model, which is rather straightforward because it is based on extracting mineral resources and converting them into a product that eventually becomes waste (i.e., "taking, manufacturing, and wasting") [15,16,17].This …
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.
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 …
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 ...
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 …
Reverberatory furnaces at Sarcheshmeh Copper Complex (south-east of Iran) produces nearly 30 tons of copper dust per day, having copper content being about 25%. Sulfide minerals are the main constituents of the copper dust (Massinaie et al., 2006, Bakhtiari et al., 2008). At present, no appropriate process is in place to extract copper …
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 …
The efficient removal and recovery of arsenic from copper smelting flue dust have received widespread attention due to its extremely high toxicity and carcinogenicity. In this research, a roasting method used for treating the dust at a relatively low temperature (300–400 ℃), with adding sulfuric acid and bitumite, was proposed, in …
The efficient removal and recovery of arsenic from copper smelting flue dust have received widespread attention due to its extremely high toxicity and carcinogenicity. In this research, a roasting method used for treating the dust at a relatively low temperature (300-400 ℃), with adding sulfuric aci …