This meant that this slag lump was the first layer of slag (primary slag) produced during the smelting process. 5, 15, 16 During the micro-drilling sampling process, some voids in the slag were discovered that were not visible on the slag's external surface. Until flotation, the smelter slag had to be cooled slowly, naturally.Web

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 ...Web

Copper smelting slag is a solution of molten oxides created during the copper smelting and refining process, and about 1.5 million tons of copper slag are generated annually in Korea.Web

Another industrial waste that can act as a suitable alternative for natural river sand is copper slag which is an industrial by-product generated during the manufacturing process of copper.Web

Depending on the reactions of the method and the medium, the leaching process for copper slag can be grouped into two main types, chemical leaching (e.g. acid leaching and alkaline leaching), and bioleaching, which has also caught much attention …Web

Copper Slag Shape and Texture: Air-cooled copper slag aggregates are black in color, and typically have a glassy appearance. Granulated copper slag aggregates are similar to air-cooled copper slag aggregates but more vesicular. Gradation: Reverberatory copper slag can be processed into coarse or fine aggregate material for use in hot mix asphalt.Web

Copper slag is a solid pollutant with high recyclability. Reduction and separation are regarded as effective disposal methods. However, during the melting process, the separation and migration behavior of elements in the copper slag is complicated. Thus, the formation of pollutants cannot be controlled merely by optimizing the operation parameters.Web

During the water-quenching process of the copper slag, approximately 10 tons of circulating water and 1 ton of fresh water are required for processing 1 ton of slag, and the heat of the quenching water cannot be recovered completely. ... Copper slag can be used as an Fe-adjusting material in construction, a cement additive, and asphalt …Web

Copper slag, an important by-product of the copper smelting process, is mainly composed of 2FeO SiO2, Fe3O4, and SiO2. Due to the sufficient metal oxides, copper slag is regard as a potential ...Web

In the copper pyrometallurgy process, 2–2.5 tons (metric) of copper slag byproducts are produced for every ton of crude copper produced [3,4,5]. As some papers have reported, in 2019, China's copper output reached 9.8 million tons, and more than 20 million tons of copper slag were produced [ 6, 7 ].Web

Utilization of copper slag with the view of recovering valuable metals such as copper and iron prior to disposal, helps in keeping the environment safe . The other base metals in the slag can be processed at BCL with …Web

Copper slag is the by-product of the copper pyrometallurgy process, with an annual output of about 68.7 Mt from the global copper industry (Sharma et al., 2017). Copper slag can be disposed when copper content in slag is reduced to below 0.5 wt%.Web

Bearing in mind the content of copper and precious metals in the ores that are currently being processed, it can be said that slag could be an important raw material for the production of copper. Flotation is one of the possible methods for the reprocessing of smelter slag and recovering copper and other metals [3, 4].Web

1. Introduction. Copper slag (CS) is a type of solid waste associated with the production of the copper metal. Approximately 2–3 tons of CS are generated when producing 1 ton of copper metal [1], [2].The annual production of CS is approximately 40 million tons worldwide [2].During the previous decades, large amounts of CS have been …Web

Ni, Co can also be achieved in slag cleaning process. Reductive smelting of copper slag with addition of coal, pyrite (FeS 2 ) and fluxes (such as CaCO 3 ) in electric furnace is a potential ...Web

Copper slag is produced during the smelting process and converting steps of pyrometallurgical production of copper. It has been estimated that for every ton of …Web

Section snippets Physical properties. Copper slag is a derivative product obtained from matte smelting and refining of copper [25]. It is a non-reactive and non-hazardous material whose size is similar to the NFA and it can be used as a NFA material in concrete with proper processing (Fig. 3).Web

Copper slag is produced during the manufacturing of copper, and for every ton of copper production about 2.2 tons of copper slag are generated, and 1.5 million tons of copper slag are generated in Korea every year [1–5]. Dumping or disposal of copper slag causes wastage of metal values and leads to environmental problems.Web

Copper slag is generated when copper and nickel ores are recovered from their parent ores using a pyrometallurgical process, and these ores usually contain other elements which include iron, cobalt, silica, and alumina. Slag is a major problem in the metallurgical industries as it is dumped into heaps which have accumulated into millions …Web

This process results in the generation of vast quantities of copper slag as a by-product. Usually, the production of 1 ton of Cu is associated with the generation of around 2.2 t of slag [ 75 ]. The global production of copper slag from the smelters is about 21.1 Million Tonnes (MT), the copper content of which lies in the range of 0.5–2% ...Web

Copper Slag can be used for construction of the top layer, base course and substructure of roads where it can be used as soil or aggregate, unbound, …Web

Approximately 2.0–3.0 t of copper slag (CS) containing 35%–45% iron is generated for every ton of copper produced during the pyrometallurgical process from copper concentrate.Web

Copper slag is also a metallurgical solid waste produced during the copper smelting process; about 2–3 t of slag are produced for every ton of refined copper in China. 15,16,17 The contents of Fe and Cu in copper slags are considerable, approximately 30–45% and 0.5–3.0%, respectively, and thus recycling of valuable elements in copper …Web

Utilization of copper slag with the view of recovering valuable metals such as copper and iron prior to disposal, helps in keeping the environment safe . The other …Web

Consequently, terminology from process engineering can be used to describe slags. From the perspective of road construction or concrete production, slags are raw materials and the road or the concrete are the product. ... (2017) Effect of copper slag, iron slag and recycled concrete aggregate on the mechanical properties of concrete. …Web

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. ... lead/zinc) depending on the industry from which they come. Figure 5 presents a general schematic diagram for the slag production process for copper, nickel, and lead–zinc …Web

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. …Web

Approximately 24,6 million tons of copper slag is generated each year from world copper production (Gorai et al., 2003). It is usually disposed in uncovered dumps in the vicinity …Web

As a result of this process, copper-rich matte (sulphides) and copper slag (oxides) are formed as two separate liquid phases. The addition of silica during smelting …Web

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 …Web

Copper slag can mix and ground with gypsum and cement clinker to produce cement. This process uses a large amount of copper slag (about 60–70% of the total cement raw materials), and energy consumption can be reduced by 50%. ... According to different copper slag depletion process requirements, the total addition ratio of …Web

Smelting is the pyrometallurgical process used to produce copper metal with the use of mining concentrates or copper scrap as the primary source of feed. ... However, copper-containing phases in slag can differ, and they may be in the form of oxides, sulfides, 6 or a mixture of both. One of the other main components of slag is the silica phase ...Web

Depending on the pyrometallurgical process used, copper slag can be divided into smelting slag, blowing slag, refining slag, and dilution slag. The growth rate in recent …Web