Green and efficient utilization of waste ferric-oxide desulfurizer to
Copper slag. Copper slag used in this study was collected from Tongling Non-ferrous Metals Group Holding Co., Ltd, Anhui, China. Chemical compositions of copper slag are shown in Table 1. It can be seen from that the copper slag contains 2.71 wt.% Cu, 0.48 wt.% Ni, and some toxic elements, including Pb, Zn and As, are also observed in it.
Technology of Processing Slags of Copper Production using …
The article considers the inevitability of copper losses with slag and the possibility of reducing them by various methods and using local secondary technogenic formations.
Worldwide research on extraction and recovery of cobalt through
Cobalt is a strategic and critical mineral whose demand is expected to grow rapidly. This study aims to provide a comprehensive summary of cobalt extraction and recovery research from 2012 to 2021 in the form of bibliometric analysis. The work was based on the Science Citation Index Expanded (Web of Science) and carried out using …
(PDF) A Novel Process for Extracting Precious Metals from Spent Mobile
The process uses only waste copper slag without using any additional flux components as slag formatives. In each set of experiment, crushed WEES were melted with waste copper slag for 30 min at ...
Gallium and germanium extraction and potential recovery from
Both elements are primarily bound in the slag glass (90.5–95.4% of Ga and 95.9–96.7% of Ge). Extraction experiments conducted in 0.5 M H2 SO 4, 1 M HNO 3, and 1 M HCl were used to simulate the hydrometallurgical recovery in view of the potential recovery of Ga and Ge. The leaching of Ga and Ge (and other valuable metals: Zn, Pb) …
Searchlight Minerals Clarkdale Slag Project Update
Chain of Custody Gold Content of Slag by Various Processes and Laboratories. Laboratory Conducting Test. Slag Head Au gmt. Slag Head Au opt. Au Extraction % In Test. Dundee Process #1. 0.478. 0. ...
Recovery of Precious Metals (Au, Ag, Pt, and Pd) from Urban
With the aim of investigating deportments of precious metals in pyrometallurgical processing of waste electrical and electronic equipment, the distributions of selected precious metals (gold, silver, platinum, and palladium) between copper matte and three different silica-saturated slags (pure FeOx-SiO2, FeOx-SiO2-Al2O3, and FeOx …
Review on Comprehensive Recovery Valuable Metals and
Fortunately, the laying method can extract iron from copper slag, and the secondary slag obtained can be used as an excellent raw material after crushing and sieving to obtain glass–ceramics with CaAl 2 Si 2 O 8 as the main crystalline phase and Ca 2 MgSi 2 O 7 as the secondary crystalline phase . The iron in the copper slag recovered …
Recovery of valuable metals from copper slag | Mining, Metallurgy
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 cobalt from copper slag was investigated through the process of sulfation roasting–water leaching and the process of sulfation roasting–sulfate …
A comprehensive review on the recovery of copper values from …
The extraction of metals from the copper slag involves pyro-metallurgical, hydrometallurgical, or a combination of both routes. Generally, the pyrometallurgical …
An efficient approach to utilize copper smelting slag: Separating
In addition, the Zn and Pb components of the copper slag cause considerable damage to the ironmaking equipment. ... Extraction of copper from copper slag: Mineralogical insights, physical beneficiation and bioleaching studies. Korean J. Chem. Eng., 32 (2015), pp. 667-676, 10.1007/s11814-014-0298-6.
Recovery of iron from copper slag via modified roasting in CO–CO
A novel technology, modified roasting in CO–CO2 mixed gas and magnetic separation, was presented to recover iron from copper slag. The effects of various parameters such as dosage of flux (CaO), gas flowrate of CO and CO2, roasting temperature, roasting time, particle size of modified slag and magnetic flux density on …
Development of Technology for Recycling Copper Smelting
Copper smelting production is characterized by formation of a large amount of waste, the majority of which is slags. During the production of 1 ton of copper there is 2–4 tons of smelting, converter, and refining conversions slags [].Flotation treatment of slags with extraction into concentrate of part of the copper in PO Balkhashtsvetmet started in 1992 …
Method for extracting iron from slag
1. a method of extracting iron from slag, is characterized in that, comprises the following steps: A, sulfuric acid slag are crushed to below 10mm, in the ball mill of packing into, add in mass ratio CaO 0.1-8.0kg/t and NaOH 0.1-4.0kg/t simultaneously, and ore grinding is to-200 orders; B, ore grinding is placed in surge tank to-200 purpose ...
Outotec provides concentrator technology for slag treatment …
Outotec has signed a contract with Chilean Codelco, the leading copper producer in the world, for the delivery of concentration technology for a slag treatment …
Separating and Recycling of Elemental Silicon from Wasted
In the secondary refining process of industrial silicon, approximately 15 pct of the silicon is trapped in the silicon slag. Thus, the separation and recovery of silicon from the industrial silicon slag are highly significant for the reuse of silicon resources. Based on the large difference among the melting temperature, density, and viscosity of the silicon and …
A Review of Technology of Metal Recovery from Electronic Waste
Recycling of e-waste, especially EOL-EEEs, such as computers and mobile phones, provides lucrative business opportunity for extraction of valuable metals such as gold, silver, copper, lead, etc. Currently, e-waste recycling in India, especially processing, to a large extent, almost 95%, remains confined to the unorganized sector, which due to ...
Copper Cathode Production Line-Hydrometallurgy-
Home > Equipment > Hydrometallurgy. Copper Cathode Production Line. Copper electrorefining (ER) production line converts copper anode to LME Cu-CATH-1 copper cathode and byproduct anode slime. Metalcess develops mini scale copper ER from 1T/d copper electrorefining system with modular design/easy installation, optimizing your …
A Review of Recent Advances in Pyrometallurgical Process
2.1 Electromagnetic Measurement. Using electromagnetic technology to measure levels in a furnace may be a solution to the problems inherent in the smelting process. The magnetic difference between the slag and the matte phase within a smelter is often detectable using magnetic sensors [].Saleem and co-workers have conducted …
Minerals | Free Full-Text | Recovery of Iron from …
The Fe3O4 and Fe2SiO4 in copper slag were successfully reduced to metallic iron by coal-based direct reduction. Under the best reduction conditions of 1300 °C reduction temperature, 30 min reduction …
Kinetics of copper leaching from direct-to-blister copper flash
where ({m}_{mat{Cu}}^{0}) —the mass of copper in the slag sample before the process and ({m}_{mat{Cu}}) —the mass of copper in the solution after leaching process.. The measuring stand consisted of four main elements: 1. 600 ml beaker in which the leaching process was carried out, 2. pH analyzer consisting of a probe …
Iron and copper recovery from copper slags through smelting
To recover metal from copper slags, a new process involving two steps of oxidative desulfurization followed by smelting reduction was proposed in which one …
Copper Recycling
Slag from copper-smelting operations usually contain between 1.5% and 8% copper depending on process used. After internal recycling, reduction and/or settling, the slag contains between 0.7% and 2% Cu and is often discarded. It is estimated that about 2.2 t of slag is generated per ton of copper produced.
(PDF) A Novel Process for Extracting Precious Metals from Spent …
A novel process to simultaneously extract the precious metals such as gold, silver, platinum, palladium and rhodium from spent mobile phone printed circuit boards …
Environmental and Socioeconomic Impact of Copper Slag—A …
Therefore, utilization of copper slag for recovering iron can be used to feed the steel plant, stimulating its resurrection. This can also help in the waste management of slag, thus reducing environmental pollution. Most slags contain 40 wt.% iron, and extraction of this iron from CS is ideal [ 70 ]. 2.2.
Recycling of brass melting slag through the high-temperature …
Brass melting slag is a valuable secondary resource for the recovery of copper and zinc. The hydrometallurgical recovery process of this material is a challenge, because of its limited dissolution in sulfuric acid. The present study aimed at studying a combined pyro-hydrometallurgical treatment processes involving high temperature …
Review on E-waste Recycling: Part II—Technologies for
Hydrometallurgy involves extracting the valuable metals into solutions by leaching in the appropriate solvent or liquid (acid or alkali), and then recovering the targeted metal from the solution using precipitation, absorption, ion exchange, electro-winning, or solvent extraction. Copper, precious metals such as gold, silver, etc. and REEs can ...
The Extraction of Copper
Extracting copper from its ores. The method used to extract copper from its ores depends on the nature of the ore. Sulfide ores such as chalcopyrite ((CuFeS_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 …
New methods could extract large lithium stores from brine
Adsorption, ion exchange, and solvent extraction are among the most common methods under development to extract lithium directly from brine. After undergoing the extraction process, the spent brine is returned below ground via injection wells. In this way, DLE methods can be set up faster, require a much smaller footprint, and have much …