A novel process to simultaneously extract the precious metals such as gold, silver, platinum, palladium and rhodium from spent mobile phone printed circuit boards (PCBs) and honeycomb-type auto...

The working principle of the copper slag processing production line is to use the physical characteristics of the ductility of the metal copper. The metal copper and the waste slag are separated by crushing, grinding, screening, etc., using a very simple working principle from The extraction of metallic copper from copper slag has significant …

Request PDF | Base metals recovery from copper smelter slag by oxidising leaching and solvent extraction | Due to its amorphous structure, smelter slag cannot efficiently be leached with sulphuric ...

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. …

The properties of liquid slag and matte were studied in the autogeneous extraction of copper which occurs in the Vanyukov's furnace, applied in the Balkhash copper-smelting plant (Balkhash Group of Mining and Metallurgical Enterprises, Kazakhstan). The density and surface tension of the melts were measured using the maximum-bubble pressure …

With the purpose of recovering the metal values, in this study the copper slag was reduced by coke and biochar at 1250 °C in an argon gas atmosphere using the isothermal reduction/drop quenching technique. The phase compositions of metal, matte, and slag were determined using electron probe microanalysis (EPMA). The effects of …

An experimental comparison: Horizontal evaluation of valuable metal extraction and arsenic emission characteristics of tailings from different copper smelting slag recovery processes

Hence, in response of its potential economic performances and environmental benefits, copper slag needs to be subjected to further metallurgical recycling and cleaning instead of being dumped or abandoned without treatment. Here, a critical review of the generation mechanism, and chemical and physical characteristics of …

The method used to extract copper from its ores depends on the nature of the ore. Sulfide ores such as chalcopyrite ( CuFeS2 C u F e S 2) are converted to copper by a different method from silicate, carbonate or sulfate ores. Chalcopyrite (also known as copper pyrites) and similar sulfide ores are the commonest ores of copper. The ores …

One of the greatest environmental challenges in metal extraction is the generation of a large amount of slag. Most of these slags contain insufficient amounts of valuable metals for economical revalorization, but these concentrations may be harmful for the environment. At present, more than 80% of the global copper products are obtained …

During the past two decades attempts have been made by several investigators and copper producing units all over the world to explore the possible utilisation of copper slag.

French researchers will start extracting rare earths, cobalt, copper, and nickel from slag heaps in Finland and New Caledonia.

To eliminate the negative effects caused by nonferrous metals when using copper slag in the steelmaking industry, a new scheme was proposed to treat copper …

According to the proposed technology, liquid Zn-containing slag obtained from the autogenous smelting of copper-zinc concentrates is delivered to the direct …

This study investigated the feasibility of a low temperature carbothermic reduction-acid leaching method for the extraction of cobalt, copper, and iron from copper slag.

Physical, hydrometallurgical and pyrometallurgical methods for valuable metals recovery from copper slag are particularly reviewed in this paper. Besides, this paper then introduces a novel technique proposed by Northeastern University of China which can achieve high-value and slag-free treatment of molten copper slag.

Metallurgical solid waste residue is produced after the extraction of valuable metals. Copper slag is a type of nonferrous metal smelting slag produced in pyrometallurgy. Copper slag is the melt of various oxides and mainly comes from slag-forming components in flux, ore, ash, and reducing agent (fuel) as part of the smelting, …

A study published in Transactions of the Nonferrous Metals Society of China describes a unique sulfurization-reduction technique for recovering copper, lead, and …

A novel process to simultaneously extract the precious metals such as gold, silver, platinum, palladium and rhodium from spent mobile phone printed circuit boards (PCBs) …

The mineral processing method to recover copper from copper slag has increasingly become indispensable in pyrometallurgical copper smelting due to its high …

The extraction and separation technologies include physical methods (flotation, magnetic separation) and chemical methods (hydrometallurgical and pyrometallurgical). This paper reviews the different technical principles, parameter optimization and mechanism characteristics of extracting and separating copper and …

In the paper, a new technology was developed to improve the beneficiation of copper and iron components from copper slag, by modifying the molten slag to promote the mineralization of valuable minerals and to induce the growth of mineral grains. Various parameters, including binary basicity, dosage of compound additive, …

To address these challenges, recycling and repurposing of copper slag waste using innovative technologies should be considered, creating a resource for a circular economy. This paper presents a review of copper slag production and its potential as a world resource for cobalt and copper metals.

Extracting valuable metal is a common way of recycling copper pyrometallurgical solid waste (CPSW). However, its environmental effects are still unclear. This paper adopts a cradle-to-gate life cycle assessment to assess the impacts of recycling three main types of CPSW (smelting slag, copper ash, and anode slime).

The use of copper slag to extract silica and metal elements not only reduces solid waste, but also creates considerable economic benefits. Therefore, the effective treatment of copper slag has become a topical issue in the field of solid waste utilization.

In this study, a novel process to extract precious metals contained in spent mobile phone PCBs and honeycomb-type auto catalysts by smelting without collector metals with using only CaO as a slag ...

A recent study describes a unique sulfurization-reduction technique for recovering copper, lead, and zinc from copper smelting slag.

Copper slags are a by-product generated from copper extraction. Rich in iron oxide, silica, calcium oxide, and alumina, copper slags are mostly stockpiled or used in landfill applications. These slags consist of a substantial amount of valuable metals in an entrained metallic, sulphide or dissolved oxidized form, copper being one of them. The …

Abstract. Copper slags are a by-product generated from copper extraction. Rich in iron oxide, silica, calcium oxide, and alumina, copper slags are mostly stockpiled …

In this research, copper smelting slag was processed under a pressurized oxygen atmosphere and low acidity conditions to achieve the selective extraction of copper and zinc and to let the iron and silicon in the slag be transformed and reconstructed into hematite and amorphous silica, respectively. The composition and the structure of …