Abstract: Copper slag and stainless steel slag of Electric Arc Furnace (EAF) are two typical metallurgical solid wastes, which contain a large number of valuables, such as Fe, Cr, and Cu.
Copper slag and stainless steel slag of Electric Arc Furnace (EAF) are two typical metallurgical solid wastes, which contain a large number of valuables, such as Fe, Cr, and Cu.
During ISA copper smelting process, ISASMELT furnace discharges a large amount of matte and slag mixture and the separation of them has an important influence on the recovery of valuable metals. This paper presented a reduction-sulfurization sedimentation process for recovering copper and cobalt from the matte–slag mixture of …
Copper slag, a waste solid produced in the copper smelting process, is a high-quality secondary resource with huge output. The recycling and utilization of copper slag is of great interest because it avoids the loss of valuable metals and the threat of harmful metals, and saves a lot of natural resources and energy. This paper firstly …
With the continuous exploitation of primary high-quality mineral resources, these resources could be gradually exhausted, so it is of great significance to recover iron-rich basic oxygen furnace (BOF) slag as secondary mineral resources. Given the composition characteristics of BOF slag, a method of synergetic modification of copper …
Copper oxide reduction accomplished with injection of reducing media for several tuyere/plug arrangements in a slag refining furnace was simulated and the reduction performance was compared.
The two main methods for the slag cleaning used in the copper industry today produce chemically and physically different type of slag materials. The commonly used electric furnace (EF) cleaning ( Kapusta, 2004) produces molten slag which can be granulated and solidified quickly into fine sand, or cast into large blocks and crushed to …
Copper slag and stainless steel slag of Electric Arc Furnace (EAF) are two typical metallurgical solid wastes, which contain a large number of valuables, such as Fe, Cr, and Cu. The transition metal elements in the waste slags, such as Cr and Fe, can ...
Given the composition characteristics of BOF slag, a method of synergetic modification of copper slag as additive and BOF slag was proposed to separate iron minerals for recovery.
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 setling in a separate slag cleaning furnace.
In this study, a sodium carbonate combined with mechanical activation enhanced flotation for recovering copper from copper slag was developed. Based on the phase analysis, the flotation experiment was conducted.
Copper slag is a by-product obtained during smelting and refining of copper. The waste copper slag can be used as abrasive tools, road construction, and ballast. Despite increasing rate of reusing copper slag, the huge amount of its annual production is disposed in dumps or stockpiles to date.
Namibia Custom Smelters (NCS) process a range of copper concentrates in their three furnaces, namely; top submerged lance, copper converter and reverberatory furnaces, in order to produce mattes and fayalitic slags. The …
In this study, a novel method to recover copper, zinc and iron from copper slag by SO2–O2 roasting-leaching-magnetic separation was proposed. The effe…
Cleaning experiments of a copper matte smelting slag from the water-jacket furnace was undertaken by direct reduction in a laboratory-scale electric furnace.
During smelting, impurities in the copper concentrate, such as iron, silica, and other non-metallic materials, combine to form a glassy, granulated material called copper slag. Due to its high global production rates, copper contributes significantly to the metal industry, the annual average output amount to approximately 17 million tons.
Water cooled copper blocks designed by Tenova Pyromet have successfully been utilised on metal, matte and slag tapholes for a number of processes, including nickel, PGMs and mineral wool.
The description of a new approach for the treatment of electric furnace slag concludes the considerations concerning the different residues. While the introduction of primary copper smelting slag into an electric furnace displays a commonly applied procedure which leads to a marketable product, legislative as well as environmental …
The typical process steps in the pyrometallurgical processing are smelting, converting, fire-refining and anode casting followed by tankhouse electrorefining to copper cathode. Slag is further cleaned in a slag cleaning furnace or directed to slag flotation.
Aiming at the recovery of copper from smelting slagSmelting slag, a flotationFlotation approach was studied. It was found that this slag composed of fine particles with complex association and distribution, in which bornite was the main copper-bearing mineral after...
The recovery of copper from reverberatory furnace slag utilizing flotation has been studied. The effective factors such as particle size, pH, the amou…
Copper slag and stainless steel slag of Electric Arc Furnace (EAF) are two typical metallurgical solid wastes, which contain a large number of valuables, such as Fe, Cr, and Cu. The transition metal elements in the waste slags, such as Cr and Fe, can be recycled as the coloring ions in the black cer …
An orientation textural, mineralogical and chemical study of smelter slag from three localities in the Okiep Copper District in South Africa have shown that the slags are significantly enriched in copper with minor concentrations of zinc, tungsten, cobalt, nickel and molybdenum.
AbstractThis paper studies alkali activation of copper mine tailings (MT) and low-calcium flash-furnace copper smelter slag (SG), two major types of wastes from the mining industry. The effect of SG content, curing temperature, and curing time on the ...
The liquidus temperature of the slag is related to the composition, matte grade, and SO2partial pressure [9,10]. Copper mainly exists in slag as dissolved copper if the smelting tempera- ture is higher than the liquidus temperature [11].
Copper blast furnaces are employed in the pyrometal lurgical treatment of low-grade copper concentrates. The function of the blast furnace is to economically smelt miscellaneous residues, e.g., slags and copper, utilizing low energy while minimizing metal loss to the final slag discard.
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 copper anode furnaces, the installed refractory lining is exposed to chemical attack caused by slag and copper oxide. This results in infiltration of the brick microstructure and corrosion of the bricks' inherent components. Increased temperature level changes the temperature and partial pressure during the furnace operation, as …
Abstract The traditional fossil reductant used in the copper slag cleaning process cannot fulfill the requirements of sustainable development of the copper industry. Therefore, a new approach of employing waste motor oil (WMO) instead of a non-renewable fossil reductant to clean copper slag (reduce magnetite concentration and …
The main aim of the electric furnace treatment in the primary copper industry is the reduction of valuable metals such as zinc, lead or copper itself.
In the present work, the effects of amount of coke, reduction temperature, flux addition, and furnace types on copper slag smelting in a DC arc furnace were studied. The optimum coke amount was found to be 10% of the slag weight in an open-top furnace for a 1 h reduction time in the temperature between 1703 and 1753 K. Similar conditions in a …
Rashad (Rashad 2016) reviewed the previous studies conducted using granulated blast-furnace slag and copper slag as partial or complete replacements for river sand.
Download Citation | On Dec 1, 2023, Rongsheng Xu and others published The potential of copper slag as a precursor for partially substituting blast furnace slag to prepare alkali-activated ...
The knowledge of mineralogy and texture of solidified slag as well as the chemical composition of copper-bearing phases is of particular importance in the industry because depending on the presence and speciation of copper in the slag, the reduction of copper losses into the slag or the slag cleaning process can be suggested [ 8, 10, 12 ].
Ferrous slag: electric arc furnace slag (EAFS) and ladle furnace slag (LFS); and non-ferrous slag: copper slag (CS) and silicon-manganese slag (SiMnS) have been used as precursors for alkali activated cements (AACs).
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. …
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 …
