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working of copper slag cleaning furnace in Mexico
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Minimization of Copper Losses in Copper Smelting …
in many electric slag-cleaning furnaces and in some rotary slag-cleaning furnaces. The ultimate objec-tive of the current work was to evaluate the mini-mum level of soluble copper that can be achieved in electric furnace slag-cleaning operations under conditions when a small layer of molten copper is present.
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Modelling of copper (I) oxide reduction in a copper slag …
Figure 1: Tuyere and purging plug arrangements in a slag cleaning furnace that are considered in the study. Figure 2: (a) Capillary plug integrated into furnace lining.
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EFFICIENCY OF COPPER RECOVERY FROM A SLAG IN …
slag cleaning unit. Thus, the furnace is a large, 13 m in diameter circular unit, equipped with three 1.0 m in diameter Söedeberg electrodes and 13.5 MVA transformer. Current-ly, the electric furnace operates as the slag cleaning unit, processing the liquid slag from Teniente Converter and solid reverts.
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Electric Slag Cleaning Furnace
With 's Outotec Electric Slag Cleaning Furnace, the cleaning of smelting furnace slag is carried out using surface coke reduction in an electric furnace. The circular or rectangular electric furnace is operated …
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The Submerged Arc Furnace (SAF): State-of-the …
The 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 …
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Copper Smelting Slag Cleaning in an Electric Furnace by …
In view of the non-renewable reductant resources and carbon neutralization in the process of copper slag cleaning in an electric furnace, this study proposed to use waste cooking oil as reductant to replace fossil energy. Combined with the phase equilibrium theory and experimental results, the harm of excessive magnetite in the copper smelting slag to …
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Understanding the bottom buildup in an electric copper …
copper smelting furnace by thermodynamic calculations Andreas Lennartsson, Fredrik Engström, Bo Björkman & Caisa sson ... an electric furnace is operated as a slag cleaning furnace. KongoliandYazawa[20]havealsousedthermodynamic ... current work the result from the characterisation[4]of the buildup in an electric smelting furnace, together
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Magnetohydrodynamic Copper Slag Cleaning
The future challenge for copper smelters is to increase metal yield by reducing copper losses and valorizing the slag as a marketable by-product. This can be achieved through further slag cleaning in a conventional submerged arc furnace (SAF) where remaining metallic oxides are reduced, and metal droplets have more settling …
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Minimization of Copper Losses in Copper …
The experimental work was performed under slag-cleaning conditions for different levels of Fe in the matte and for a range of Fe/SiO2 ratios in the slag. ... slag cleaning in a settling furnace ...
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(PDF) COPPER ISASMELT
The smelter features a single Isasmelt furnace for smelting, one 6-in-line electric furnace for matte-settling and slag-cleaning duties, four Peirce-Smith converters and two rotary anode furnaces.
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A comprehensive review on the recovery of copper values from copper slag
The load resistivity of copper slag allowed it to be favourable for cutting non-ferrous metals, wood or plastics. W. S. Inynierska [109] reported that copper slag could be an efficient binder instead of ceramic binder in grinding wheel manufacturing. Improved grinding efficiency and decreased energy consumption were obtained by improving the ...
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Effects of fluxing conditions on copper smelting slag …
Keywords: slag cleaning, copper smelting slag, flux, EPMA analysis In the copper smelting process, more than two tons of slag is produced with each ton of copper. Copper losses in smelting slags are made up of chemically soluble copper (≈ 30%) and as mechanically entrained matter droplets (≈ 70%). This is the key technical concern for
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A novel slag cleaning method to recover copper from molten copper …
To recover copper from copper slag, a novel slag cleaning method was proposed. The thermodynamics and binary phase diagram of FeO–SiO 2 were calculated first. Then, the effects of experimental parameters on the reduction of Fe 3 O 4, recovery of copper, and slag cleaning mechanism were investigated.The results showed that the …
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RECOVERY OF COPPER FROM SMELTING SLAG BY …
Abstract: In this work extraction of copper and iron from a reverberatory furnace slag was studied. A two-step extraction procedure was followed. The first step was roasting of the slag in the presence of sulphuric acid at temperatures between 150 and 800 oC. The second step was leaching of the resulting calcine with distilled water.
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Development of Electric Furnace Slag Cleaning at a Secondary Copper
The 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 the metal values. The addition of …
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The settling behavior of matte particles in copper slag and …
2.2. 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 temperature was raised to the …
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Durability of Alkali Activated Blast Furnace Slag K Ellis, N Alharbi, P S Matheu et al.- ... Content from this work may be used under the terms of theCreativeCommonsAttribution 3.0 licence. Any further distribution ... Modelling and simulation of a copper slag cleaning process improved by electromagnetic stirring . H …
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Slag treatment solutions for non-ferrous metals
The BlueSlag process follows a two-step principle, the ladle treatment station and the slag settling furnace, and was primarily developed for the treatment of copper and nickel slag. In the ladle treatment station, the slag is heated and purged/stirred with gaseous reduction media. Fluxing and the addition of solids is also possible.
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Electric Arc Furnace Steelmaking and Slag Formation, …
The growth of electric arc furnace (EAF) steelmaking in North America has occurred mainly in the past 40 years due to low electricity prices, an abundance of steel scrap (especially near large population centers), and the development of mini and macro steel mills based on metal recycling. Scrap availability and price has made steel …
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[PDF] Minimization of Copper Losses in Copper Smelting Slag …
The experimental work was performed under slag-cleaning conditions for different levels of Fe in the matte and for a range of Fe/SiO2 ratios in the slag. All experiments were carried out under conditions where three phases were present (copper–matte–slag), which is the condition typically prevailing in many slag-cleaning …
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LATEST RESULTS OF THE INTENSIVE SLAG CLEANING …
0 5 10 15 20 25 5 0 -- 2 0-4 0 0 8 0 05 0 5 0 0 1 0 0 Inclusion Size (µm) Percentage of Population (%) Figure 1: Size distribution of metallic inclusions in copper converter slag [2]
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Cleaning of a copper matte smelting slag from a water-jacket furnace …
Cleaning 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, metallurgical coal was …
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Copper Slag Sand Blasting: Pros And Cons
Copper slag is a by-product of the copper extraction process. It is often used for sandblasting, but it can also be used in construction as a replacement for river sand when making concrete. Using Copper Slag in Construction. Copper slag has a higher specific gravity than river sand, which means it can be used to produce concrete …
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Modelling of copper (I) oxide reduction in a …
Reduction of copper oxide is an important step of metal recovery and slag cleaning in copper production. This can be achieved by slag treatment with injected reducing agents.
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MECHANISM OF BUILDUP FORMATION IN AN …
The copper slag cleaning in an electric furnace is based on slag reduction and settling of copper matte inclusions. Copper recovery depends on the slag temperature, degree ... copper layer at the bottom. Thus, the aim of this work is to evaluate the mechanisms of buildup formation on the electric furnace hearth. MOLTEN 2009. Santiago, Chile 1213
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New process for treating Slag Cleaning Furnace (SCF) flue …
Download Citation | New process for treating Slag Cleaning Furnace (SCF) flue dust at Atlantic Copper | Atlantic Copper is one of the largest copper producers in Europe. Its production facilities ...
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Improved Settling Mechanisms of an Industrial Copper Smelting Slag …
A 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 critical parameters. …
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Recovery of Copper, Lead and Zinc from Copper Flash Converting Slag …
The optimum slag cleaning conditions were determined as follows: reductive agent coke dosage of 6%, 2% pyrite addition of converter slag weight and smelting at 1350°C for 3 h. ... copper-zinc concentrate and matte of the blast furnace on the content of copper and magnetite in converter slags. The content of Cu in the slag …
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The Phase Transition and Element Distribution of Copper Smelting Slag
Sulfidation treatment of copper smelting slag. In the sulfidation experiment, the particle size of the synthesized slag was controlled below 80 mesh (178 µm).The mixture of CaSO 4 and anthracite was pelletized at a pressure of 1.0 MPa in a Ø 4 mm pressing tool, and the weight of every pellet was roughly controlled to be 0.04 g. Then …
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INNOVATIVE TECHNOLOGIES FOR COPPER …
The smelting and converting El Teniente process for copper concentrates as well as slag cleaning furnace technologies to treat slags coming out from the El Teniente furnaces are widely applied ...
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Minimization of Copper Losses in Copper Smelting Slag …
rotary slag-cleaning furnace are now generally used to perform this task, giving a level of copper in dis- ... For the experimental work, the sulfide/copper mixtures thereby prepared were then ...
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Copper Smelting Slag Cleaning in an Electric Furnace by …
Based 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 settling. In the …
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Recovery of valuable metals from copper slag
The 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 process of sulfation …
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Copper Smelting Slag Cleaning in an Electric Furnace by …
Copper slag cleaning in an industrial electric furnace commonly reduces the magnetite to < 5 wt pct, which ensures that the slag is in a proper viscosity range for …
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Outotec Flash Smelting Technology
Learn how Outotec's Flash Smelting technology is the cleanest and most efficient method for producing copper and nickel from sulfide concentrates. Explore the benefits, …
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Process of Copper Slag Reduction in an Electric Furnace and …
The application and continuous improvement of the copper slag reduction process in the electric furnace stem from increasingly strict legal restrictions on slag …
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