Effects of fluxing conditions on copper smelting slag …
extensively 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 advantage of ...
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Alternatives of Copper (I) Oxide Reduction in a Copper Slag …
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 a separate slag cleaning furnace. The reduction of Cu 2 O from slags is carried out by adding carbon/coke or by injection of various reductants (e.g., different types of oil or natural ...
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Minimization of Copper Losses in Copper Smelting Slag During Electric
Such 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 temperature ...
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High-value terminal treatment: Utilizing copper slag heat in …
The copper smelting industry generates copper slag as its primary solid waste (Tian et al., 2021).The pyrometallurgical process extracts approximately 80% of the copper (Zuo et al., 2022), producing 2–3 tons of copper slag for every 1 ton of copper (Qu et al., 2023).According to statistics, global copper slag emissions in 2022 alone reached 35.2 million …
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Mineralogical Characterization of Historic Copper Slag to …
The variety of slag compositions of Table 1, is inherent to both the concentrate composition and the extraction method applied.Each slag composition requires an appropriate treatment method for further metal recovery or for utilization as construction material [27,28].Thermal reduction of copper smelter slags with solid carbon is commonly applied in …
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Melting and refining furnaces
The portfolio includes mainly shaft furnaces and shaft hearth furnaces for melting of spend anodes, copper cathodes and different copper qualities as well as drum-type furnaces as anode furnace for the refining of blister or raw copper and …
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Preparation of lightweight glass-ceramics from copper slag
The metallurgical industry produces a large amount of solid waste [1].It is estimated that for every ton of copper produced, more than 2.2–3 tons of copper slag are produced [2].In the aluminum electrolysis and recovery process, about 30∼50 kg and 100–150 kg of SAD are respectively discharged per ton of aluminum [3].According to the World Bureau of Metal …
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Recovery of copper from reverberatory furnace slag by …
The recovery of copper from smeltery furnace slag by flotation has been studied. By analysis the slag containing 1.61% copper and 27.80g/t silver is available to recovery. The effective factors such … Expand
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Drying shrinkage mitigation of alkali-activated blast furnace slag
Volume stability is a critical challenge for the practical applications of alkali-activated materials. To mitigate the drying shrinkage of alkali-activated blast furnace slag-copper slag (AAS-CS), different contents of polyether-based shrinkage reducing admixture (PSRA) and MgO-based expansion agent (MEA) are used in this study.
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Application of steel slags, ferronickel slags, and copper …
Reactivity is the key to the successful utilization of waste materials. Ferronickel slag, copper slag, and copper tailing show a high amount of SiO 2 that forms a secondary calcium silicate hydrate if mixed with cement through a pozzolanic reaction. Steel slag has CaO as the most dominant chemical component and is close to Portland cement.
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An efficient approach to utilize copper smelting slag: …
The hazardous components of copper slag are released into the ambient environment (Li et al., 2021a, Li et al., 2021b, Zolotova et al., 2021), resulting in environmental pollution and unsustainable developmental issues. Copper slag contains 29–45 % Fe, 25–40 % SiO 2, 5–11 % CaO, 3–7 % Al 2 O 3, and other nonferrous
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Minimization of Copper Losses in Copper …
The authors further consider that under exceptionally well-controlled conditions, a copper content in electric furnace discard slag between 0.55 wt.% and 0.7 wt.% can be obtained, by minimizing entrained matte and …
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EFFICIENCY OF COPPER RECOVERY FROM A SLAG IN …
Copper is present in a smelting slag from Teniente Converter (TC) in the form of mecha-nically entrained matte inclusions and dissolved copper. Copper recovery from the slag requires …
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Reduction of Anode Furnace Slag from Secondary Copper …
Anode furnace slags contain significant amounts of valuable elements such as copper, nickel, tin, lead and zinc. To avoid losses during processing, the slag is typically recycled to upstream ...
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Copper Smelting Slag Cleaning in an Electric Furnace by
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Improved Settling Mechanisms of an Industrial Copper …
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 …
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(PDF) Refractories for Copper Production
Matte and slag phases increase the deterioration in the slag line [10]. These drawbacks make the copper industry acquire such quantities of refractory materials for the total or partial ...
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Numerical simulation for heat transfer behavior of copper slag …
On the basis of above findings, this paper adopts an analytical method of assuming the copper slag as a dynamic heat source, establishing a slag ladle simulation geometric model according to the size of 12 m 3 casting slag ladle in industrial production in accordance with 1:1 modeling. Then through the experiments on the copper slag sampled from the factory to obtain the thermal and …
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Synergetic modification of industrial basic oxygen furnace slag …
Copper slag is an acid slag mainly composed of Fe 2 SiO 4 and CaFeSi 2 O 6, which is classified as solid waste in the copper smelting industry (Li et al., 2019).In China, 2.2–3.0 tons of copper slag were produced per ton of refined copper, and tens of millions of tons of copper slag were released into the environment every year (Zhou et al., 2019).At present, the most …
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Minimization of Copper Losses in Copper Smelting Slag …
have been steadily optimized. The 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 0.55 wt.% and 1.3 wt.%,with most plants reporting copper losses in the discard slag in the range of 0.8–1.0 wt.%.
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The potential of copper slag as a precursor for partially …
The safe and efficient treatment of copper slag (CS) is an important aspect of the circular economy and green development. In order to reduce the negative environmental …
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Recovery of copper from copper blast furnace slag
of copper from the slag. Experimental Materials. Industrial copper blast furnace slag was used in this study. Slag sampIes received from the furnace were crushed to less than 3 mm, and 100-g slag sampIes were prepared by means of mechanical splitting. Carbon in the form of graphite powder (-200 mesh, 74 fim) containing greater than 99% fixed
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US4021235A
A process is provided for recovering in a slag cleaning furnace the copper from smelting furnace slags discharged from a smelting furnace for copper refinery, said process being characterized in that zinc removed tailings are charged into said slag smelting furnace in an either continuous or discontinuous manner, whereby the copper recovery may be improved and valuable metals …
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Effects of fluxing conditions on copper smelting slag …
bottom blown furnace slag have been investigated with the aim of minimizing the copper loss in discarded slag. The industrial copper smelting slags from Fangyuan were used to mix with …
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Recovery of Copper from Copper Blast Furnace Slag
Global copper slag (CS) emissions reached 57.2 million tons in 2021. Despite the increasing reuse of CS, the treatment of CS is still dominated by landfill so far, which not only occupies land ...
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The potential for copper slag waste as a resource for a …
The reverberatory slag is produced from the reverberatory smelting furnace and usually produces the slag that is more dilute in copper of about 0.6% and is discarded without slag recovery treatment (Davenport et al., 2002). The smelter slag is produced from the smelting furnaces and contains copper with average of 1.2%.
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Minimization of Copper Losses in Copper …
In the quest to achieve the highest metal recovery during the smelting of copper concentrates, this study has evaluated the minimum level of soluble copper in iron-silicate slags. The...
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Utilization of copper slag as fine sand replacement in …
To address these challenges, the incorporation of supplementary cementitious materials (SCM) such as fly ash, blast furnace slag, limestone filler, rice husk ash, and copper slag can be beneficial [33, 34, 36]. These additions help reduce the temperature of the mix without significantly increasing costs.
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Kansanshi Copper Smelter ISACONVERT™ Furnace Tapping …
Blister Tap-Hole Refractory Insert Life. Unlike slag or copper matte, blister cannot be tapped through a water-cooled copper element. Contact of molten blister with a water-cooled copper element typically results in a rapid dissolution of the copper element, which eventually may cause a steam explosion or furnace leak with serious consequences [].A proven practice for …
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Development of Electric Furnace Slag Cleaning at a …
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.
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Preparation and hydration process of copper slag …
The strength of the copper slag mortar was generally lower than that of the control mortar and the amount of ground copper slag to replace cement for optimum strength was about 5%. View Show abstract
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