A novel process to upgrade the copper slag by direct reduction
Direct reduction-magnetic separation is an efficient way to recovery iron from copper slag, where iron and copper minerals can be transformed into the desired phases (metallic Fe and Cu) by direct reducing the mixture of copper slag and carbon
Charlar en LíneaComprehensive recovery of zinc, iron and copper from copper slag
In this study, a novel method to recover copper, zinc and iron from
Charlar en LíneaRecovery of Copper and Magnetite from Copper Slag
Considering the experimental results, 7.5–18 kg Cu/t slag might be recovered from the slag. A preliminary economic analysis,
Charlar en LíneaComprehensive recovery of zinc, iron and copper from copper slag
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
Charlar en LíneaHigh-valued and deep utilization technology of copper slag
Eventually, comprehensive recovery of iron, silicon and copper in copper slag was achieved. Some conclusions were obtained as follow. 1. A single recovery ratio of 91% for iron and 76% for silicon is obtained after activated reduction combining with water-leaching and magnetic separation, during which copper and arsenic enrich in
Charlar en LíneaCharacteristics and utilisation of copper slag—a review
The copper slag generated at Kure, has been investigated by Acma et al. (1997) for the recovery of copper, cobalt and production of magnet grade iron oxide by pyro-hydrometallurgical route. The fayalitic slag analysing about 0.8% Cu and 0.4% Co is reduced with coke/graphite in a DC arc furnace to yield a liquid alloy rich in iron
Charlar en LíneaRecovery of Copper and Magnetite from Copper
On the one hand, copper slag is nowadays a waste in copper pyrometallurgy despite the significant quantities of iron (gt;40 wt. %) and copper (1 to 2 wt. %). On the other hand, solar energy, when
Charlar en Línea Recovery of Copper and Magnetite from Copper Slag
On the one hand, copper slag is nowadays a waste in copper pyrometallurgy despite the significant quantities of iron (>40 wt. %) and copper (1 to 2 wt. %). On the other hand, solar energy, when properly concentrated, offers great potential in high-temperature processes. Therefore, concentrated solar power (CSP) could be used in the treatment of copper
Charlar en LíneaDeep reduction recovery of iron from copper slag IIETA
Magnetic metallic iron powder with low S and P contents, high iron content (92.96%) and high iron recovery rate (93.49%) were produced through deep reduction magnetic separation using coke powder as reductant and CaO as flux under 1,300 °C for 2h.
Charlar en LíneaRecovery of iron from copper slag by carbothermic reduction and ...
Copper slag (CS) with Fe-bearing fayalite and magnetite is the main waste generated during the pyrometallurgical processing of metallic copper. In this paper, the solid-state reduction...
Charlar en LíneaComprehensive Utilization of Copper Slag in a Pyro ... - Springer
Copper slag is a major waste produced in pyrometallurgical plants during the smelting and converting operations and has caused heavy environmental contamination. A pyro-hydrometallurgical process for the treatment of copper slag has been developed to accomplish recovery of nickel, cobalt, and copper and reuse of iron source.
Charlar en LíneaStepwise Utilization Process to Recover Valuable
Several products were obtained from the waste copper slag through the proposed process: flotation concentrate, measured 21.50% Cu; magnetic concentrate, containing 90.21% TFe and 0.4% Cu; direct
Charlar en LíneaStepwise Utilization Process to Recover Valuable Components from Copper ...
Several products were obtained from the waste copper slag through the proposed process: flotation concentrate, measured 21.50% Cu; magnetic concentrate, containing 90.21% TFe and 0.4% Cu;...
Charlar en LíneaA Study on Reduction of Copper Smelting Slag by Carbon for
Magnetic separation cannot efficiently recover the iron from copper slag due to its difficult processing of fayalite. Although the reduction smelting requires a large amount of energy during smelting process, it is possible to recover the
Charlar en LíneaExperimental Study of the Sulphatizing Roasting of ... - IOPscience
Experimental Study of the Sulphatizing Roasting of Flotation Tailings from Copper Slag Processing Using Iron Sulfates ... Li L and shuai Shi C 2017 Recovery of iron and copper from copper tailings by coal-based direct reduction and magnetic separation J. Iron Steel ... Urosevic D M and Jankovic Z D 2016 Recovery of Copper from Smelting
Charlar en LíneaComprehensive recovery of zinc, iron and copper from copper slag
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
Charlar en LíneaCharacteristics and utilisation of copper slag—a review
One of the methods of processing copper slag is based on carbothermic reduction which involves recovery of the metals and also part of the iron yielding finally an iron rich alloy. The alloy is processed for the recovery of copper and cobalt.
Charlar en LíneaRecovery of Copper and Magnetite from Copper
Considering the experimental results, 7.5–18 kg Cu/t slag might be recovered from the slag. A preliminary economic analysis, considering the current copper price, indicates that only the recovery of
Charlar en LíneaSynergetic modification of industrial basic oxygen furnace slag
Considering the composition characteristics of copper slag containing Fe2+ and Si (~30 wt% total Fe and ~40 wt% SiO 2) ( Sarfo et al., 2017 ), copper slag can be used as a potential additive and promoter in the oxidative modification process of BOF slag to realize efficient resource utilization.
Charlar en LíneaBACKGROUND REPORT SECONDARY COPPER SMELTING,
Hydrometallurgicalpretreatment methods include flotation and leaching to recover copper from slag. Flotation istypically used when slag contains greater than ten percent copper. The slag is slowly cooled suchthat large, relatively pure electrolytic refining 135,000one-stage (top-blown rotaryconverter) smelting/refining
Charlar en LíneaThe leaching behavior of copper and iron recovery from
Fig. 6 showed the copper recovery rate of samples under different leaching liquid-solid ration. As can be seen, the recovery rate of Copper was hardly effected by the of liquid-solid ratio from 2:1–4:1. On the other hand, copper recovery slightly increased and reached 71.9% when the liquid-solid ratio was 5:1.
Charlar en Línea Recovery of Copper and Magnetite from Copper Slag
Copper slag is a waste during pyrometallurgical production of copper from copper sulfide concentrates, about 2.2 tons of which being generated per ton of metal copper production. Dumping or disposal Expand 38 PDF View 2 excerpts, references methods Minimization of Copper Losses in Copper Smelting Slag During Electric Furnace Treatment
Charlar en Línea(PDF) Copper slag valorisation: Characterization and concentration ...
Copper slags are considered as a waste product of pyrometallurgical copper extraction from ores. Per ton of copper produced, 2.2 tons of slags are generated. In these slags, higher copper...
Charlar en LíneaRecovery of Cu-Fe Alloy from Copper Smelting Slag - MDPI
Copper smelting slag usually contains 1–6 wt% copper, which can be recovered by pyrometallurgical and flotation processes. However, the tailing slags still consist of 0.3–0.7 wt% Cu and 35–45 wt% Fe equivalents to those in the copper and iron ores, respectively. Most of the research was focused on the recovery of iron from the
Charlar en LíneaRecovery of Copper from Reverberatory Copper Slag and
The slurry was stirred by magnetic stirrer. A schematic flow diagram of the leaching of copper from copper slag is shown in Figure 1. ... Figure 4 shows that the copper recovery from the copper slag increases with an increase in acid concentration. An optimum recovery of copper is achieved at 70% H 2 SO 4. The reaction was carried out with no ...
Charlar en LíneaImprovement of Carbothermic Reduction of Copper Smelting
2.1.1. Copper Smelting Slag The chemical composition of copper smelting slag is given in Table 1, which illustrates that it contains high content of T.Fe, Zn, Cu and SiO 2 as well as S. The miner-alogical analysis of copper smelting slag was investigated by XRD. The result in Fig. 1 indicates that the main crys-talline phases are fayalite (Fe 2SiO
Charlar en LíneaEffect of Cooling Rate and Slag Modification on the
As a result, it is necessary to recover copper matte from theslag by suitable methods. At present, the most common way is slow, controlled cooling in a transfer ladle. However, research onthe detailed effects of slow cooling and the function of slag modification is rare.
Charlar en LíneaImproving Separation of Cu–Fe from Copper Slag by ... - Springer
In recent years, many researchers have attempted to extract the copper and iron from the slag and some new methods were proposed. The methods are roughly classified into: (i) physical separation process, (ii) pyrometallurgical and (iii) hydrometallurgical processes.
Charlar en LíneaCleaner recycling of iron from waste copper slag by using
Copper slag, which is produced during the smelting of Cu, contains compounds such as oxides of Fe, Cu, Co, Al, Si, Ni, Cr, and Ca. Cu slag contains more valuable metals, such as Cu and Fe, than those in certain raw ores. The recovery and treatment methods for copper slag are presented in this paper.
Charlar en Línea