Comprehensive review on metallurgical recycling and cleaning of copper slag

The smelting process can be divided into three stages, namely decomposition of high-valence sulphide, oxidation of sulphide, and matte smelting and slagging reaction (Fig. 1).The efficiency of matte smelting and matte-slag separation, as well as the extent of copper losses to slag are mainly affected by the oxidation/reduction potential, matte grade, smelting …

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Characterization and Recovery of Valuables from Waste …

smelting and refining [1,2]. During copper smelting, two liquid phases are formed, namely a copper-rich matte and a slag [3]. It is estimated that, for a ton of copper produced, 2.2 to 3 tons of slag is generated [2-5]. These molten copper slags are dumped near the smelter site and is

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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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Utilization of copper slag as fine sand replacement in concrete: a

Copper slag, when processed and finely ground, exhibits pozzolanic properties, similar to those of fly ash and silica fume. Its high silica content and amorphous structure make it an ideal condition for use as a supplementary cementitious material in concrete mixtures. Incorporating copper slag into concrete not only conserves natural resources ...

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Valorization of copper smelter slag through the recovery of metal

The copper slag may be hazardous if abandoned to the environment but it may be a valuable resource if the metal values can be recovered. Hence, the present study focused on the application of a bio-surfactant extracted from Lactobacillus fermentum bacterium as a bio-collector in the flotation of the slag sample to reduce its silica and alumina ...

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SUSTAINABLE CONSTRUCTION MATERIAL

Manufacturing process of copper production produces enormous amount of the copper slag which contains required chemical properties, so it can be used as construction material.

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Copper smelter slag treatment by ammonia solution: …

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(PDF) Comprehensive Utilization of Copper Slag in a Pyro

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 ...

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Comprehensive Utilization of Copper Slag in a Pyro …

Comprehensive Utilization of Copper Slag … 277 Table 1 XRF elemental analysis of the copper slag Element O Ca Mg Al Si Fe Co Ni Cu S Content (wt.%) 34.47 2.35 3.53 3.90 18.50 36.98 0.16 0.53 0. ...

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Recovery of heavy metals from copper slag by slow cooling: …

Copper slag is the main solid waste from the copper pyrometallurgical process [1].They are considered hazardous waste because they have significant concentrations of dangerous heavy metals [2].Every tonne of copper metal produced yields between 2.2 and 3 tonnes of copper slag, meaning that about 50 million tonnes of slag are produced annually worldwide [3], [4].

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Copper slag Profile

Copper slag is a by-product produced during smelting of copper, which is then processed into abrasive products. Typically it is composed of Ferro silicate material and oxides formed when the molten slag is quenched in cold water. This cooling process fractures the slag into coarse, angular particles making it an ideal choice in many applications.

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A Guide to Copper Production and Manufacturing Process

This guide unveils the fascinating and intricate process of copper production, shedding light on the sophisticated techniques and technological advancements that transform raw ore into high-purity copper. ... During this process, fluxes may be added to bind with impurities, forming a slag that can be removed. The refined copper is then cast ...

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(PDF) Copper slag: optimization of productivity and consumption …

Copper slag, a by-product from copper smelting industry, is widely used as an abrasive material to remove rust, old coating and other contamination in dry abrasive blasting which is an expensive process and results in significant amounts of particulate emissions and spent abrasive.

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A comprehensive review on the recovery of copper values from …

Gorai et al. [37] reviewed copper slag characterization and various processing routes comprising pyro and hydrometallurgical methods for metal recovery and preparation of value-added products from copper slag.

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Recovery of Copper and Cobalt from Copper Slags as

Significant amounts of copper, cobalt and nickel can be obtained from copper slags, which are produced in the thousands of tons per year in copper smelters. Very different methods were …

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Tip Tuesday | How Effective is Copper Slag Abrasive?

Tip #5 How Effective is Copper Slag Abrasive? Copper slag is a by-product created during the copper smelting and refining process. As refineries draw metal out of copper ore it produces a large volume of non-metallic dust, soot and rock, collectively known as copper slag, which can be used across a wide variety of applications in the building and industrial fields.

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A sustainable process for Pb, Zn, and Fe from copper slag by salt

Copper slag is the main by-product during copper smelting, which is rich in Cu, Pb, Zn and Fe (Hao et al., 2022, Turan et al., 2017).Currently, a large amount of copper slag is directly stacked in slag yards after copper flotation (Fu et al., 2020, Pieta et al., 2018, Wang et al., 2022), leading to a significant waste of Pb, Zn and Fe resources and environmental pollution.

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A new method of full resource utilization of copper slag

Sarfo et al. (2017) carried out carbothermal reduction process of copper slag (from the United States) by mixing 12.5% carbon with copper slag and reacting at 1420 °C for 0.75 h. The initial copper slag is reduced to low-grade pig iron with the recovery efficiency of up to 90% (Sarfo et al., 2017). However, non-ferrous metal elements can also ...

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Preparation and hydration process of copper slag-granulated …

Replacement of cement by solid wastes is an effective method to utilize secondary resources and reduce CO 2 emissions. In this study, copper slag (CS) and granulated blast furnace slag (GBFS) were used to replace cement to address the low activity of CS, which limits its large-scale utilization.

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Sulfurization Roasting of Copper Bottom-Blown Slag for Zinc …

Copper slag is a residue from the copper smelting process that not only takes up large amounts of space, but also contains harmful elements that can cause environmental pollution. In this paper, zinc in copper slag is sulfide-roasted using pyrite as a vulcanizing agent and anthracite and K2CO3 as additives, thus leaving zinc in the slag mainly in the form of ZnS. …

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Environmental and Socioeconomic Impact of Copper …

Some of the possible metals that can be recovered from the copper slag include Cu, Fe, Ni, Co, and Ag (precious metals). ... A novel process to upgrade the copper slag by direct reduction-magnetic ...

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A Review of the Influence of Copper Slag on the Properties of …

Keywords: copper slag, working properties, mechanical properties, durability, leaching properties, cement-based materials. 1. Introduction. Copper slag (CS) is a by-product of the copper smelting process and is one of the nonferrous metal residues. CS is mainly composed of Fe 2 O 3, SiO 2, and a small number of metallic elements [1,2,3].

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Sustainable and Comprehensive Utilization of Copper Slag: A

Within this paper, application options, the environmental behavior, and ways to treat copper slag in order to remove hazardous and recover valuable metals are critically …

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Process of Copper Slag Reduction in an Electric Furnace and the …

Key to implementing modifications aimed at improving the copper slag reduction process is a thorough understanding of its kinetics and thermodynamics. Electric resistance furnaces are used for this process, and for more intensive copper removal, arc resistance furnaces are used.

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Optimization of Slag Chemistry for Copper Flash Smelting Process …

The flash smelting process accounts for 50 pct of smelting copper concentrates. [1,2,3] Copper concentrate, along with oxygen-enriched gas and silica flux, is blown into the hearth furnace to be oxidized rapidly, leading to the production and separation of matte and slag in a calm settler.[4,5] The viscosity of the slag increases significantly upon the formation of …

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High-valued and deep utilization technology of copper slag

In order to achieve single recovery of Fe, Cu and Si in copper slag and deep removal of impurities in products, the activated reduction combining directional oxidation are adopted to improve the separation limit of target components, which mineral constituent as well as chemical composition at different stages are investigated through XRD and chemical analysis. …

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Carbothermic Smelting Reduction of Copper Slag for Fe and Cu …

Copper is one of the most commonly used metals in the world (~ 26 million tonnes each year). 1 Over 85% of copper is produced by a pyrometallurgical process from copper ores or scrap. Copper slag, as a primary by-product, is also produced during the high-temperature smelting process. 2 The slag output is about 2 ~ 3 times that of the refined copper due to the …

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Copper Tailing

The slag's specific gravity and hardness depend on the iron oxide content within the sample, whereas, much like ferronickel slag, copper slag has a large iron content and can be difficult to grind to usable particle size as a secondary cementitious material and …

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SUSTAINABLE CONSTRUCTION MATERIAL

It is recommended that up to 40% of copper slag can be use as replacement of fine aggregates. ... From copper smelting process, copper slag is produced as a by-product. Per unit production of copper, approximately 2.33.0 ton of copper slag is generated as a by-product. In India, entire copper slag is generated by three states of the India ...

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