Modelling of copper (I) oxide reduction in a copper slag …
Resultto copper loss to the slag predominantly in the form of copper (I) oxide [Reddy et al. 2003]. Hence, the recent trends of copper smelting invariably lead to significant
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Cleaning of a copper matte smelting slag from a water-jacket furnace …
ResultCleaning experiments of a copper matte smelting slag from the water-jacket furnace was undertaken by direct reduction in a laboratory-scale electric furnace. The effects of coal-to-slag ratio, w, and the reduction time, t, were considered for two different coal/slag mixing procedures. In the first procedure, …
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Cleaning of a copper matte smelting slag from a water-jacket furnace …
ResultCleaning experiments of a copper matte smelting slag from the water-jacket furnace was undertaken by direct reduction in a laboratory-scale electric furnace.The effects of coal-to-slag ratio, w, and the reduction time, t, were considered for two different coal/slag mixing procedures.In the first procedure, …
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The settling behavior of matte particles in copper slag and …
Result2.2. Experimental method and analytical techniques2.2.1. Settling behavior of matte in copper slag. To study the settling behavior of matte in copper slag, 60 g of copper slag were placed in an alumina crucible and kept in a protective atmosphere of 99.5% N 2 throughout the experimental process. The …
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Comprehensive review on metallurgical recycling and …
ResultTo decrease the copper loss, a cleaning furnace (e.g. electric slag-cleaning furnace, rotary slag-cleaning furnace) is applied after the …
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Minimization of Copper Losses in Copper Smelting Slag …
ResultIn an industrial slag-cleaning furnace, the tem-perature is typically held between 1200 C and ... For the experimental work, the sulfide/copper mixtures thereby prepared were then mixed with
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12.3 Primary Copper Smelting
ResultSlag produced by flash furnace operations contains significantly higher amounts of copper than reverberatory or electric furnaces. Flash furnace slag is treated in a slag cleaning furnace with coke or iron sulfide. Because copper has a higher affinity for sulfur than oxygen, the copper in the slag (as copper oxide) is …
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Flash Smelting
ResultThe advantages of flash smelting over roasting/electric furnace melting are that flash smelting: (1) requires much less energy than electric smelting and (2) avoids the electric furnace's emission of weak SO 2 gas [ 31 ]. It is also a high production rate process, perfectly matched to the 50–100-μm particles in froth …
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Development of Electric Furnace Slag Cleaning at a Secondary Copper
ResultThe use of an electric arc furnace for recovery of metal values from slag generated in a secondary copper smelter has been successfully demonstrated and commercialized. Blast furnace slag containing about 1.5% Cu, 1.0% Pb, 3.5% Zn, 1.0% Ni, 40% FeO and 1.0 opt Ag was retreated to recover better than 75% of …
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Copper Smelting Slag Cleaning in an Electric Furnace by Using Waste
ResultThe distribution of matte particles in each slag layer after cleaning was investigated in detail, which indicates that the copper content in the upper slag layer can be reduced to 0.56 wt pct via ...
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Reduction of copper smelting slag using waste cooking oil
ResultAbstract. Currently, waste cooking oil (WCO) as a renewable energy is not widely utilized. Copper slag cleaning in an electric furnace is a critical process for reducing the excessive magnetite (Fe 3 O 4) present in the copper slag to decrease the slag viscosity, which can promote the sedimentation of …
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Factors Governing Slag Cleaning in an Electric Furnace
ResultThe reduction and copper impoverishment of these slags in an electric furnace were simulated in the laboratory as part of a conceptual study for the Las Ventanas Smelter of ENAMI. The effects of power input, electrode immersion, slag temperature and coke and solid revert additions on the rate of magnetite reduction …
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(PDF) Minimization of Copper Losses in Copper …
ResultSuch conditions include operating the electric furnace at metallic copper saturation, maintaining the %Fe in the electric furnace matte between 6 wt.% and 9 wt.%, not exceeding a slag …
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Effects of fluxing conditions on copper smelting slag …
Resultextensively investigated. The electric furnace or rotary slag-cleaning furnace are now generally used to perform this task, giving a level of copper in discard slag typically in the range of 0.6 - 1.3 wt%, with most plants reporting copper losses in the discard slag in the range of 0.8 - 1.0 wt% [1-3]. The latter process has the …
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Mitsubishi Process | SpringerLink
ResultCopper matte and slag continuously flow through a chute to the electric slag cleaning furnace for separation by precipitation; the copper matte, at a grade of around 70%, flows continuously through a chute into the converting furnace for converting; the cleaned slag contains 0.6–0.8% copper and is discharged …
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Recovery of valuable metals from copper slag | Mining, …
ResultThe copper smelting process produces plenty of copper slag every year, which is a hazardous solid waste, but a secondary resource. In the present study, the extraction of copper, nickel, and cobalt from copper slag was investigated through the process of sulfation roasting–water leaching and the …
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INNOVATIVE TECHNOLOGIES FOR COPPER …
ResultTenova Pyromet has developed innovative technologies for copper smelting and electric slag cleaning …
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Diagnose for valorisation of reprocessed slag cleaning furnace …
ResultThe commercial slag is produced in the slag cleaning furnace (SCF), where under high temperature (1250 °C) and reducing atmosphere its remaining copper content (5%, approximately) decrease (below to 1%), and flue dust, mainly enriched of Zn and Pb among other metals, is formed [Seetharaman et al., 2014, …
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Development of Electric Furnace Slag Cleaning at a …
Resultvalues from slag generated in a secondary copper smelter has been successfully demonstrated and commercialized. Blast furnace slag containing about 1.5% Cu, 1.0% Pb, 3.5% Zn, 1.0% Ni, 40% FeO and 1.0 opt Ag was retreated to recover better than 75% of the metal values. The addition of limestone
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Copper Smelting Slag Cleaning in an Electric Furnace by
The main components of fayalite-based copper slag are iron oxides (FeO and Fe3O4) and SiO2. Based on the slag compositions, the … See more
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Outotec Flash Smelting Technology
Result Outotec Slag Cleaning Slag cleaning at copper and nickel smelters is typically done using an electric furnace process. The design of Outotec slag cleaning furnaces is based on our extensive experience with different slag compositions and understanding of how to optimize the process for maximum …
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Minimization of Copper Losses in Copper Smelting Slag …
ResultThe electric furnace or rotary slag-cleaning furnace are now generally used to perform this task, giving a level of copper in dis-card slag typically in the range of …
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Copper Smelting Slag Cleaning in an Electric Furnace by …
ResultBased on the physicochemical reaction of the melt, the process of copper slag cleaning in an electric furnace could be divided into two steps: reduction and …
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Reduction of copper smelting slag using waste cooking oil
ResultCopper slag cleaning in an electric furnace to decrease the copper content of slag is one of the critical processes in the copper smelting process. As shown in Fig. 2, the reduction of slag by WCO was realized in this reactor, through which copper or copper sulphide was collected in a metal/matte phase, and the …
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Improved Settling Mechanisms of an Industrial Copper Smelting Slag …
ResultA significant source of copper losses from pyrometallurgical copper extraction is attributed to dissolved and entrained copper in discarded slag. Entrained copper can be recovered via pyrometallurgical slag cleaning in a settling furnace, where the slag viscosity and copper droplet size distribution (CDSD) are …
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Minimization of Copper Losses in Copper …
ResultThe electric furnace or rotary slag-cleaning furnace are now generally used to perform this task, giving a level of …
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New process for treating Slag Cleaning Furnace (SCF) flue …
ResultThe results of these trials, plus further work in October and November, provided confidence to move to one reverberatory furnace for slag cleaning in December 2004.
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Rectangular furnace design and revolutionary DC-slag …
ResultCopper Slag cleaning furnaces are commonly connected to copper smelting units such as Teniente and Noranda converters and Outokumpu flash smelters. The main function of the furnace is the reduction of the copper level in the slag11. SMS Demag's furnaces are designed for a reduction of the copper level from 1–8 % …
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Outotec Flash Smelting Technology
Result Outotec Slag Cleaning. Slag cleaning at copper and nickel smelters is typically done using an electric furnace process. The design of Outotec …
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The Submerged Arc Furnace (SAF): State-of-the-Art Metal
ResultThe submerged electric arc furnace (SAF) has proven a versatile unit in numerous metallurgical applications for more than a century. Countless innovations have made this furnace type become the most commonly used furnace for increased metal recoveries and slag-cleaning operations. In many …
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