Furthermore, highlighted the significant iron content in copper slag, emphasizing the possibility of recovering and recycling iron along with copper. It recovers copper as an iron-copper alloy and oxides in the final slag (Busolic et al., 2011). Moreover, studies have proposed various methods for iron recovery from copper slag.
Red mud and spent cathode carbon block (SCCB) are environmentally hazardous industrial wastes generated by the alumina and aluminum electrolysis industries, respectively. In this paper, SCCB was applied to iron recovery from high-iron red mud by vortex smelting reduction with the concept of 'waste treatment by waste.' The …
The recovery of iron and other metals from the EAF slag using smelt-reduction process was studied with coal as the reductant. A pig iron phase with high carbon and a final slag depleted...
In this work, a new and carbon-free reductant, i.e., secondary aluminum dross, is used to replace coal to recycle valuable metals from copper slag by smelting reduction. The influence of substitution ratio on slag properties and metal recovery was investigated. The results show that the metal recovery is mainly determined by the …
Effect of roasting temperature on iron recovery. In the Copper smelting slag (CSS): coke: calcium carbonate: calcium hypochlorite mass percentage of 100:15:12:5, the segregation time is 60 min, the magnetic field strength is 0.25 T, and the grinding fineness is less than 0.074 mm accounting for 90 % of the roasted ore particles. ...
Recovery of iron from the waste slag is of great interest for maximum use of mineral resource, reduction of environment impact and improvement of economical benefits to the related companies. The ...
When n C/n O=0.8, and reduction-melting time is 60 min at 1320°C, the recovery rate of iron is greater than 86.1%, and the mass fraction of iron in iron nugget is about 94.8%. Read more Article
The total iron (TFe) refers to the iron content in the obtained Magnetization-roasting reduction iron, and the Fe recovery is the ratio of iron content in Magnetization …
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minerals Article Iron Recovery from Discarded Copper Slag in a RHF Direct Reduction and Subsequent Grinding/Magnetic Separation Process Zhicheng Cao 1,2, Tichang Sun 1,*, Xun Xue 1,2 and Zhanhua Liu 2 1 Key Laboratory of High-Efficient Mining and Safety of Metal Mines, Ministry of Education, University of Science and Technology Beijing, …
Erdenebold et al. investigated the reduction and recovery of iron from copper slag as well as the preparation of building materials from tailings [15] [16] [17]. There are few studies on the ...
Iron ore tailings (IOTs) are a form of solid waste produced during the beneficiation process of iron ore concentrate. In this paper, iron recovery from IOTs was studied at different points during a process involving pre-concentration followed by direct reduction and magnetic separation. Then, slag-tailing concrete composite admixtures …
By using DR followed by a magnetic separation process for iron recovery from copper slag, Yang [10] obtained iron powder of 92.05% iron content with an iron recovery rate of 81.01%, and Wang [11 ...
Slag is the by-product of iron- and steelmaking processes. Normally, around half to one tonne of slag would be generated for yielding one tonne of rolled iron or steel (Lobato et al. 2015).It was reported that the world steel production was 1.9 billion tonnes in 2016, which suggested that at least around 1 billion tonnes of slag is produced during …
The steel slags inherit characteristics from ore chemistry and their processing routes, which may be Blast Furnace-Basic Oxygen Furnace (BF-BOF) or …
To determine the iron recovery, a novel triangular material balance diagram, which represents the balance among the reduced iron ingot, the reduced iron …
of fayalite.12 However, because the iron recovery ratio is only 58%, and that only in pure fayalite, the reaction behavior of the complex nickel slag exposed to water vapor at high temperature has not been investigated. Some research has proposed an iron recovery method for the recovery of iron in the form of magnetic iron oxides (Fe 3O 4). 13 ...
Choi, A Study on the Recovery of Iron from Copper Slag with Temperature, International Journal of Applied Engineering Research, Number 2, 977-982 (2018). [7] V.D. Parfenov, Structure and mechanical properties of cast irons, 12-30 (2011). [8] Ye.A. Kazachkov, Calculations on the theories of metallurgical processes, 30-36 (1988). [9] ...
The major phases, in the copper slag are fayalite and magnetite while spinel, ulvospinel, metallic iron, calcium oxide and barium sulphide are minor phases and all these are devoid of gold or ...
High yield of iron and dephosphorization efficiency are very important in electric arc furnace (EAF) operation. Even though various methods has been operated to increase iron recovery and dephosphorization efficiency, the suitable control of slag composition is one of dominant factors affecting them because thermodynamic driving …
The key to recovering waste LiFePO 4 (LFP) is the recovery of lithium; however, the effective and synchronous recovery of phosphorus and iron resources still needs to be achieved. In this paper, a new process was proposed for recovering phosphorus and iron from the lithium extraction slag (LES) of waste LFP by the …
Dependence of Slag-Composition Variation on Basicity of the Modified Slag. Table 2 shows the slag compositions and the dosage of reactants under different modification conditions. As basicity of the modified slag increases from 0.5 to 1.5, the mass fractions of SiO 2, MgO, and 'FeO' in the modified slag gradually decrease, while the …
2.2 Characteristics of iron/steel slag The typical compositions of iron/steel slag are shown in figure 1. The exact composition of iron/steel slag varies with the type of furnace used, type of steel grades used and the pre treatment method. Steel and iron slags primary components include limestone (CaO) and silica (SiO2).
Laboratory level experiments with converter slag collected from Esfahan steel company, Iran demonstrated viable vanadium recovery using sodium carbonate leachant alkaline leaching process for vanadium recovery.
On the basis of a comprehensive analysis to achieve greater nickel recovery and lower iron recovery rates, the optimum experimental parameters in the orthogonal experiment were A3B1C3 (t = 30 min ...
We investigated the effect of flux (lime) addition on the reduction behavior of iron oxide in copper slag by solid carbon at 1773 K (1500 °C). In particular, we quantified the recovery of iron by performing typical kinetic analysis and considering slag ing, which is strongly affected by the thermophysical properties of slags. The iron oxide in …
Abstract: How to increase the ration of iron and heat recovery from the smelting steel slag is an important issue in metallurgy. So a study of extracting iron from converter slag was done by smelting reduction method. Here we studied the effect of CaO/SiO 2 on the recovery during smelting reduction. Results showed that the CaO/SiO 2 directly …
With high-quality iron ore grades with an iron content of 64 to 67 %, a blast furnace typically produces about 0.25 to 0.30 t of slag per t of pig iron. In the case of inferior grade ores below 60 %, the amount of slag is …
In order to recover iron from nickel slag, the authors investigated the effect of a water vapor atmosphere on the oxidation process of nickel slag. The phase constitution and microstructure of the solid products were characterized using x-ray diffraction and scanning electron microscopy with an energy dispersive spectrometer. The results show …
Several areas for slag application are discussed in this review including internal reuse of the slag within the metallurgical process, civil construction and building …
the residual slag or charcoal in the furnace began to appear. The chemical compositions of the slag samples used in the experiments are shown in Table 1, and the experimental conditions are shown in Table 2. The dephosphorization slag and the decarburization slag from actual plant opera-tions were mixed so that the slag sample had the prescribed
