Characterization of copper slag for beneficiation of iron and copper
1.2. Objectives. The objective of this present study is to characterize the BCL copper slag and analyze its composition properties. In the past, research has been focused on ferrous and non-ferrous slags with the intention of employing the findings in various applications [].We had to carry out the characterization task first in order to quantify the composition of the …
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Minimization of Copper Losses in 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 parameters.
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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 phase equilibrium of this ISASMELT copper slag during the smelting process was analyzed by a FeO-Fe3O4-SiO2 ternary phase diagram (depicted by …
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Resource Utilization of Copper Slag with a Focus on
Reduction. The reduction process for copper slag is typically followed by magnetic separation [].Depending on the temperature and intensity of reduction, it can be classified as direct reduction, deep reduction, and smelting reduction []monly used reducing agents include coke, biomass carbon, and natural gas [31, 32].The reduction process converts ferrous …
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Modelling of copper (I) oxide reduction in a copper slag cleaning furnace
The trial brick specimens using 100 wt% copper slag replacement for sand not only satisfied all requirements of cement brick in the Korean standard (KS) F 4004, but also the TCLP regulation ...
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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, …
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Recovery of copper from reverberatory furnace slag by flotation
Generally, copper losses in reverberatory slags are either chemical or mechanical. Most of the copper loss is mechanical, mainly in the form of matte drops (Biswas and Davenport, 1980).As is known, the viscosity of the slag, the interfacial properties of the matte and the slag, the bath turbulence, and chemical compositions of the slag and matte are the main factors …
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Recovery of Copper from Copper Blast Furnace Slag
Secondary copper blast furnace slag was treated with carbon to derive the conditions for maximum recovery of copper with minimum simultaneous reduction of iron oxide.
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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 added to the ...
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Influences of silicate modulus and alkali content on …
To obtain a deeper understanding and enhance its practical application, the effects of silicate modulus and alkali content of water glass (WG) on the performances of alkali-activated blast furnace slag-copper slag (AAS-CS) are systematically investigated though the fluidity, setting time, hydration heat, compressive strength and drying ...
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Alkaline activated cements obtained from ferrous and non …
Two slags from steel production in the electric arc furnace (Alcalá de Guadaira, Sevilla, Spain) were used: electric arc furnace slag (EAFS) (3–5 mm particle size) originated in the primary metallurgy or fusion and ladle furnace slag (LFS) (0–2 mm particle size) originated in the secondary metallurgy or refining of the molten bath produced ...
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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 of magnetite reduction and slag residence time. The formation of solid buildup on the furnace hearth leads to the decrease of furnace volume and slag residence time ...
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Copper Loss in Slag | Request PDF
Cu smelters produce two slags: smelting furnace slag with 1–2% Cu and converter slag with 4–8% Cu. Discard of these slags would waste considerable Cu, so they are almost always treated for Cu ...
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(PDF) Water-cooled Tap-hole Blocks
A copper slag tap-hole that does not require a support cool er is shown schematically in Figure 6. Temperature ... slag–metal separation, slag flow in the furnace, and ultimately furnace tapping ...
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Mechanical and microstructural analysis of cemented tailings …
Copper slag (CS) exhibits pozzolanic activity in alkaline cementitious systems, making it a suitable supplementary cementing material for cemented tailings backfill (CTB) with reduced carbon emissions. ... Hu et al. [29] examined the reactive products and reactivity of modified RM and ground-granulated blast furnace slag at varying alkalinities ...
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Copper Smelting Slag Recovery-
Copper smelting slag is produced from copper pyrometallurgy (both smelting and converting stages), usually grading at 0.3-3%. The slag may also contains lead & zinc minerals like galena, sphalerite. ... Generally speaking, the copper dross is treated by rotatory reverberatory furnace. In case of copper dross with high arsenic, tin and antimony ...
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Utilisation of copper slag for cement manufacture
Table 9: Performance of slag cements prepared by using 35% copper slag at different fineness. Observation and Analysis: Chemical analysis of granulated blast furnace and copper slag are given in Table 1. The results indicate that granulated blast furnace slag conforms to all the requirements of Indian Standard Specification IS: 12089-1987 for the …
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irC:sp:121-2018
iron, steel and Copper slaG in ConstruCtion oF rural roads Published by: indian roads ConGress Kama Koti Marg, Sector-6, R.K. Puram, New Delhi-110 022 november, 2018 ... 1.1 Blast Furnace Slag 3 1.2 Steel Slag 4 1.3 Chemical Composition and Engineering Properties 6 1.4 Slag Utilization 9 2. Slag as Pavement Material 9
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Recovery of copper from copper blast furnace slag
The maximum recovery of copper in alloy phase was obtained with 5% (by weight) initial carbon in the feed, 2% (by weight) CaO addition to the slag and a reducing temperature …
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Comprehensive review on metallurgical recycling and …
Copper slag, generated mainly during copper smelting, and classified as a potentially harmful waste, is an important secondary resource containing not only valuable …
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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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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 addition of SiO 2 …
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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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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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The effect of copper slag as a precursor on the mechanical …
In this research, copper slag was partially and fully replacing ground granulated blast furnace slag as a precursor to explore the effect of copper slag on alkali-activated slag-copper slag mortars. This study presents a potential approach to reducing the environmental impact of copper slag while also tackling the increasing shortage of ground ...
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Rectangular furnace design and revolutionary DC-slag …
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 copper level from 1–8 % down to 0.6– 0.9%.
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Process of Copper Slag Reduction in an Electric Furnace and …
The main purpose of using an electric furnace in the primary copper industry is the reduction of valuable metals present in the slag after the finished smelting process of copper concentrates.
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Reductive-sulfurizing smelting treatment of …
In an anode furnace, partial oxygen pressures are even higher than in converting: Selivanov et al. (2013) reported a copper content of about 33% in anode furnace slag.
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Copper loss in slag | Request PDF
For example, the final slag from slag cleaning in an electric furnace, containing 0.5 % Cu, showed so small amount of metallic inclusions, that can be stated that 90% of copper is in the slag ...
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Density Tuning in Conjunction with Pelletizing of Reductants …
High-efficiency reduction of Fe3O4 particles in molten copper slag is the key for recovering slag-entrained copper, although restrained by the sluggish reaction kinetics of commercial powdery reductants with low density. Here, a new strategy by density tuning in conjunction with pelletizing of the powdery reductants is suggested, greatly enhancing the …
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