DOI: 10.1016/j.jclepro.2022.133095 Corpus ID: 250655743; Extraction and separation of copper and iron from copper smelting slag: A review @article{Zhou2022ExtractionAS, title={Extraction and separation of copper and iron from copper smelting slag: A review}, author={Wen-tao Zhou and Xiao Liu and Xian-jun Lyu and Wen Xia Gao and Huili Su and Chuanming Li}, …
The thermodynamic software program FactSage 7.0 was used to simulate the process of slag oxidation, and the simulated data were compared with experimental results. ... Li L., Hu J.H., Wang H. Smelting oxidation desulfurization of copper slags. J. Iron Steel Res. Int. 2012; 19:14–20. doi: 10.1016/S1006-706X(13)60026-6. [Google Scholar] 31.
In order to reasonably utilize the iron resources of copper slags, the smelting chlorination process was used to remove copper from copper slags. Higher holding temperature and O2 flow rate are beneficial to increasing copper removal rate. However, the Cu2O mode is formed by the reaction of surplus O2 and CuCl with O2 flow rate increasing over 0.4 L/min, …
the rate of copper slags smelting oxidation desulfurization depends on the matte mass transfer rate through the slag phase. After the oxidation treatment, sulfur of copper slags can be removed as S0 2 efficiently. Amount of CaZ+ of copper slags affects the desulfurization rate greatly, and the slag desulfurization rate is reduced by adding a ...
We study the oxidative desulfurization of copper slag at temperatures ranging from 1250 °C to 1450 °C using experimental copper slag as raw material. This is significantly different from the oxidative desulfurization process of low sulfur slag (wS < 0.2 pct) at temperatures > 1500 °C compared with the literature. Based on thermodynamic equilibrium …
The mass ratio of Fe/SiO 2 of copper smelting slag is usually between 1.5~2.0 . In the experimental process, FeO-SiO 2 synthetic slag is prepared by pure compound, and then synthetic copper slag with different sulfur content is prepared by adding Cu 2 S, FeS, and SiO 2. FeO-SiO 2 slag was prepared according to the method in the literature [22,34].
Keywords Desulfurization Copper-iron Calcium oxide Calcium carbide Ferromanganese Introduction With the development of copper smelting process, strong oxidation process is put into practice. Copper matte grade is higher, and copper element in smelting slag is also higher [1]. At present, the most common use of copper slag is that copper slag ...
Desulfurization rate of oxidation furnace reached 99.5%. The ... smelting process. Since 1976, this process has been widely used for copper and nickel smelting in the former Soviet Union. China has conducted the improvement ... reacts strongly with oxygen to form lead alloy and slag. The heat required in the smelting process comes from the ...
With the development of copper smelting process, strong oxidation process is put into practice. Copper matte grade is higher, and copper element in smelting slag is also higher [].At present, the most common use of copper slag is that copper slag is diluted to obtain copper matte and tailings.
The results mdicate that the rate of copper slags smelting oxidation desulfurization depends on the matte mass transfer rate through the slag phase After the oxidation treatment, sulfur of copper ...
According to the mechanism of sulfur removal easily through oxidation, the process of smelting oxidation desulfurization of copper slags is studied, which supplies a new thinking for obtaining the ...
According to the mechanism of sulfur removal easily through oxidation, the process of smelting oxidation desulfurization of copper slags is studied, which supplies a new thinking for obtaining the molten iron of lower sulfur content by smelting reduction of copper slags. Special attention is given to the effects of the holding temperature, the holding time and CaF2, CaO …
Key takeaway: 'Smelting oxidation desulfurization of copper slags effectively reduces sulfur content in molten iron, enabling lower sulfur content in smelting reduction with copper slags.'
Secondary copper smelting is an effective means of treating waste resources. During the smelting process, the viscous behavior of the smelting slags is essential for smooth operation. Therefore, the effects of Fe/SiO2 ratio and Fe2O3 contents on the viscous behavior of the FeO−Fe2O3−SiO2−8 wt%CaO−3 wt%MgO−3 wt%Al2O3 slag system were investigated. …
According to the mechanism of sulfur removal easily through oxidation, the process of smelting oxidation desulfurization of copper slags is studied, which supplies a new thinking for obtaining the molten iron of lower sulfur content by smelting reduction of copper slags. ... The results mdicate that the rate of copper slags smelting oxidation ...
In order to achieve single recovery of Fe, Cu and Si in copper slag and deep removal of impurities in products, the activated reduction combining directional oxidation are adopted to improve the separation limit of target components, which mineral constituent as well as chemical composition at different stages are investigated through XRD and chemical analysis. …
A new process is proposed for recovering copper from smelting slag using waste cooking oil as a green reductant. More than 70% of waste cooking oil pyrolysis products is hydrogen. In this study, a 70% H2-30% N2 gas mixture was used to simulate pyrolysis products for copper slag reduction experiments. The equilibrium composition, oxygen potential, reduction degree of …
A new process is proposed for recovering copper from smelting slag using waste cooking oil as a green reductant. More than 70% of waste cooking oil pyrolysis products is hydrogen . ... Li L, Hu JH, Wang H (2012) Smelting oxidation desulfurization of copper slags. J Iron Steel Res Int 19(12):14–20. Article CAS Google Scholar ...
We study the oxidative desulfurization of copper slag at temperatures ranging from 1250 °C to 1450 °C using experimental copper slag as raw material. This is significantly different from the oxidative desulfurization process of low sulfur slag ( w S < 0.2 pct) at temperatures > 1500 °C compared with the literature. Based on thermodynamic equilibrium …
To eliminate the negative effects caused by nonferrous metals when using copper slag in the steelmaking industry, a new scheme was proposed to treat copper slag, involving …
The removal efficiencies of these copper slags for simultaneous desulfurization and denitrification were studied. ... Liquid-phase catalytic oxidation of smelting-gases containing SO 2 in low concentration. J. Clean. Prod., 6 (1998), pp. 323-327. CrossRef Google Scholar. Sada et al., 1977.
To recover metal from copper slags, a new process involving two steps of oxidative desulfurization followed by smelting reduction was proposed in which one …
Section snippets Materials. The copper converter slag sample was collected by a copper smelting plant located in Yantai, China. Before the experiment of simultaneous removal of NO x and SO 2, the copper slag samples were first dried under 105°C overnight.Then these samples were crushing by a ball mill (XQM240 × 90, Changsha Tianchuang Powder …
Semantic Scholar extracted view of "Smelting Oxidation Desulfurization of Copper Slags" by Lei Li et al. ... {Li2012SmeltingOD, title={Smelting Oxidation …
the process of oxidizing copper slag first and then reducing copper slag to realize metal extraction from copper slag.[3] Several studies on the reduction and dilution mechanism of molten copper slag and desulfu-rization of copper slag have been conducted in the literature. Ueda and Roghani contributed a multiphase system of Cu-Fe-O-S-SiO 2 ...
In the process of extracting iron from copper slag, the iron obtained by reduction is difficult to use because of the high content of copper and sulfur. In this paper, the thermodynamics of CO2 desulphurization of slag is simulated using FactSage 7.1. In tube furnace, the desulfurization of copper slag was investigated by changing the temperature and flow rate of CO2. …
ore and copper smelting slag ... uses is for molten steel de-oxidation process. The production of ferro-silico-manganese alloy uses man-ganese Table ore, quartz and iron ore as raw materials [20]. The
experimental study of oxidative desulfurization, desulfurization effects of different oxidants are compared, and the basic principles and rules of oxidative desulfurization are explored to solve …
In this study, to improve the flue gas desulfurization performance and the utilization of copper tailings, SO2 removal from smelting flue gas by using copper tailings combined with MnSO4·H2O was ...
In order to maximize the utilization value of copper slag, a process of smelting copper–iron alloy with copper slag is proposed here. The reduction kinetics of copper slag by H2 are studied in this paper. The main phases of the copper slag were Fe2SiO4 and Fe3O4. The suitable conditions of reduction were a temperature of 1373.15 K, a H2 partial pressure of …
According to the mechanism of sulfur removal easily through oxidation, the process of smelting oxidation desulfurization of copper slags is studied, which supplies a new thinking …
Abstract The response characteristics of iron smelting reduction of copper slags were studied in this paper. ... Smelting Oxidation Desulfurization of Copper Slags. Lei Li Jianhang Hu Hua Wang. Materials Science. 2012; 11. Save. Thermodynamic analysis on molten slag waste heat cascade recovery method (MS-WHCR) Zongliang Zuo Q. Yu +4 authors Q. Qin.
