A comparison of the two tables shows no significant difference in results obtained from slags cooled in air or in the induction furnace. Recovery of copper in concentrates from slags cooled in the …
A 3kg capacity Electric induction furnace with a power rating of 2500W for heat treatment of ferrous and non-ferrous alloys was developed. The furnace which is made from mild steel sheet was monolithically lined with fire clay refractories and designed to attain a temperature of 1200 0 C on the automatic control panel.
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. …
Copper Slag cleaning furnaces are commonly connected to copper smelting units such as Teniente and Noranda converters and Outokumpu flash smelters. The main function …
Electric Furnace Slag Cleaning Tests Furnace Products Metal, % Oxides, % Final Slag, Cu Ph Zn Sn Ni Fe 25.0 0.7 0.5 2.0 12.0 0.2 1.5 60.0 1.8 4.0 0.8 0.2 7.0 0.1 0.2 60.0 Table III. Effect of Limestone on the Copper Content of Slag Cleaned at Constant 2% Coke Level Treatment Residual Cu Content, wt. % Time, h % Limestone: 4 8 10 16
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 recovery.
During the last few decades, the pyrometallurgical processes used for cleaning copper smelting slags have been steadily optimized. The electric furnace or rotary slag-cleaning furnace are …
Using the developed computational model, we simulated copper (I) oxide reduc-tion from of the initial mass fraction of copper (I) oxide in the slag (e.g., 4 wt.%) down to …
Channel furnaces were originally developed to melt brass but now are commonly used for copper, bronzes, zinc, aluminum and iron. Coreless furnaces are commonly used for virtually all metals. Channel furnaces produce heat for melting by utilizing the principle of the short-circuited iron core transformer.
Here, however, the slag still contains some percentage of copper and it is treated in a slag concentrator, where rest of the copper is recovered as a slag concentrate and fed back into the smelting furnace. In KCM's Nchanga smelter, the Flash Smelting fur - nace slag is first reduced in a slag-cleaning furnace to a degree, where iron content ...
Investigations were carried out on the suitability of granulated blast furnace slag as a mold material for either full or partial replacement of existing silica sand in the foundry industry. The sodium silicate-CO2 process was adopted for evaluating the same. A series of sand tests were performed on silica sand and slag individually and in …
Hence, the recent trends of copper smelting invariably lead to significant copper loss in slag, which needs to be recovered by means of reduction and settling in …
Induction Furnace and Steelmaking. satyendra; March 26, 2013 ... the heart of the furnace is the coil, which consists of a hollow section of heavy duty, high conductivity copper tubing which is wound in the form of a helical coil. ... The build-up of slag on furnace walls (Fig 7) is to be avoided. Typical slag build-up takes place near the neck ...
Reclamation of Induction Furnace Slag by Separation of Metal and Slag using Pulverizing System Mrunal V. Deshmukh Dr. A. G. Matani PG Student Associate Professor ... clean and well-controllable liquefying procedure contrasted with most different method for metal softening. Foundries utilize this kind of heater and now additionally more iron ...
slag cleaning reactor. It creates the conditions that the furnace is over-dimensioned for the amount of slag from Teniente Converter together with charged solid reverts. Efficiency …
Results are presented from studies of the reasons for the formation and growth of slag crusts in the crucibles of induction furnaces during the smelting of cast iron. It is established that crust formation and adhesion of slag to the furnace lining are caused by interaction of the lining material with reactants in the melt. The degree of 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
The effect of iron phase evolution on the copper content in slag during the slag cleaning process in an electric furnace was investigated using the method of combining theory with experiments.
We showed that purging plugs, which may be installed at the deepest position in the furnace, create an improved gas flow pattern that results in a higher copper oxide reduction rate. 272. Tuyere ...
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 p …
Copper 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
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 …
Download scientific diagram | Copper slag cover in induction furnace (left), Al-chip melting in rotary furnace with salt slag (right) from publication: Melt Treatment of Copper and Aluminium ...
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 …
Metals and metal oxide-based nanocomposites play a significant role over the control of microbes. In this study, antibacterial activity of iron oxide (Fe2O3) nanocomposites based on induction furnace (IF) steel slag has been carried out. IF steel slag is an industrial by-product generated from secondary steel manufacturing process …
The main components of fayalite-based copper slag are iron oxides (FeO and Fe3O4) and SiO2. Based on the slag compositions, the phase equilibrium of this ISASMELT copper slag during the smelting process …
induction furnace slag till 40 percent replacement of fine aggregate and beyond that the slump value goes on decreasing. The initial increment in workability of concrete with the increase in induction furnace slag is attributed to the low water absorption characteristics of induction furnace slag. The reduction in the value of
The operations in slag-cleaning furnaces are improved by nitrogen purging through porous plugs, the main considerations being minimal metal losses to the slag (entrained …
Slag, a byproduct of metallurgical smelting processes, is a mixture of metal oxides, silicon dioxide, and different compounds [1,2,3,4,5].It is produced from raw ore combustion or the extraction of specific minerals from smelting materials [1,5].Huge quantities of slags (1868.8 million tonnes of global steel production in 2019–2020) are …
Movable melting and casting furnace 1t for copper-alloys. Capacity: 1,000 kg (Cu) Type: MNFR-Cu-1,000 / 340 Rated power ... Coreless induction technology replaces channel inductor technology for slag forming aluminum-alloys with the advantages: ... Safety seminars induction furnaces; Details. Testing methods. Water flow test; Water …
The areas of slag deposits are at a much lower temperature than the center of the furnace walls. Slag also is deposited in areas midway down the crucible lining, where insufficient metal turbulence from magnetic stirring occurs. Channel Furnaces: Another type of induction melting furnace is the channel furnace. The channel and the coreless ...
A cupola furnace is the most frequently used furnace aggregate for cast iron production. A by-product of the production of cast iron in cupola furnaces is cupola slag. Its amount is 40–80 kg per 1 tonne of the produced cast iron, and that is one of the reasons why this material is not as favoured as, for example, the blast-furnace slag. The …
The coreless induction furnace is essentially a refractory-lined vessel surrounded by an electrically energized, current-carrying, water-cooled copper coil. ... In a coreless induction furnace, slag residuals normally deposit along the refractory walls and within the active power coil. The composition of slag varies with the type of metal being ...
