Desulfurization of Cu–Fe Alloy Obtained from Copper Slag …
2.1. Materials. The Cu–Fe alloy and slag used in this experiment were obtained via the reduction of copper slag, and their chemical compositions are shown in Table 1.The SEM micrograph and EDS results of the Cu–Fe alloy used in the experiment are shown in Figure 1 [21,22].From the electron microscope, it can be seen that the main …
A comprehensive review on the recovery of copper values …
2. Production. The annual slag generation from the copper smelters reached a value of 43 million tonnes copper in the year 2020 (US [ 102 ]). The contribution of Asia to the global production of copper smelters saw a steep rise from 27% in 1990 to 64% in …
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 …
(PDF) Characterization of copper slag for beneficiation of …
1. Introduction obtained from BCL mine located in the Northern part of Botswana in a mining town called Selebi Phikwe. This slag was classified as a metal- The mining and mineral processing sector plays a major role in the lurgical waste, hence was disposed by a way of stock – piling into heaps at economy of Botswana.
Review on Comprehensive Recovery Valuable Metals and
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 …
Extraction of iron from copper-plant slag | Steel in …
In the production of copper from sulfide ore, slag accumulates at the processing plant. In the present work, the phase transformations that occur in such slag during its reduction by the gasification products of carbon at 1100 and 1200°C are investigated. Experiments show that most of the iron present in such slag may be …
Characterization of copper slag for beneficiation of iron and copper …
Globally a large volume of copper slag (Table 1) is produced which can be approximated to 2.2 tons of slag generated for every ton of copper produced [9].The annual worldwide production of slag is approximately 24.6 million tons in the early century [6, 7] and increasing at a rate of 11% per year [6].Table 1 illustrates the magnitude of …
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 of 1573 K. A higher grade of the alloy phase with respect to copper was obtained by employing a two-stage reduction process. The results obtained in this study …
Feasibility of Recovering Valuable and Toxic Metals from …
The production of one metric ton of copper generates between two and three tons of copper slag [ 4 ]. Accordingly, in 2022, at least 45 million tons of slag were …
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 …
Extraction of copper from copper slag: Mineralogical
Extraction of copper from copper slag: Mineralogical insights, physical beneficiation and bioleaching studies | Request PDF. DOI: Authors: Sandeep Panda. …
Simultaneous recovery of arsenic and copper from copper smelting slag
During copper smelting, a variety of arsenic-bearing by-products are generated (Zhang, W. et al., 2021c, d), including copper smelting slag (CS), flue dust, black copper, and anode slime. These waste by-products, with the exception of CS, can be circulated directly into the smelting system for their harmless disposal and further …
Flotation of copper sulphide from copper smelter slag …
Almost all copper slag contains a considerable amount of Cu (0.5 to 3%). They can be treated as secondary resource of metals, rather than an end-waste. Various methods for copper recovery from the copper slags were reported with attention given to beneficiation, pyrometallurgical, hydrometallurgical, and mixed pyro and …
Comprehensive recovery of zinc, iron and copper from copper slag …
In this study, a novel method to recover copper, zinc and iron from copper slag by SO 2 –O 2 roasting-leaching-magnetic separation was proposed. The effect of roasting experiment conditions were roasting temperature of 900 °C, holding time of 120 min, and φ SO2 (The volume fraction of SO 2 in the mixed gas of SO 2 and O 2) of …
Characterization and Recovery of Copper from Converter …
Article 09 April 2022. Improved Settling Mechanisms of an Industrial Copper Smelting Slag by CaO Modification. Article Open access 28 August 2023. Introduction. …
Recovery of valuable metals from copper slag | Mining, …
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 Breakthrough Method for Extracting Valuable Metals From Copper
A recent study, however, seeks to address these issues by introducing a method for recovering copper, lead, and zinc from copper smelting slag. Slag production from copper smelting is a key source of copper production. China produced more than 11,000 kilotons of refined copper in 2022; Thus, 2.2 to 3 tons of slag were created for …
Kinetics of copper leaching from direct-to-blister …
The activation energy of copper leaching from flash smelting slag was estimated in the range from 12.77 to 17.34 kJ/mol. mage and diagram of the test stand for leaching of flash smelting slag (1 ...
Turning waste into wealth: Synergistic recovery of metal from copper slag
Turning waste into wealth: Synergistic recovery of metal from copper slag. Copper smelting is a major source of copper production, generating significant amounts of slag. In 2022, China produced over 11,000 kilotons of refined copper, leading to 2.2 to 3 tons of slag per ton of copper produced. This slag contains valuable metals like copper …
Production and Properties of Copper Slag | Request PDF
Copper slag used as a partial cement substitute in concrete significantly improves its late-age compressive strength [16]; specifically, its strength at 90 days of age is increased by [14
Recovery of Cu-Fe Alloy from Copper Smelting Slag
Copper smelting slag usually contains 1–6 wt% copper, which can be recovered by pyrometallurgical and flotation processes. However, the tailing slags still consist of 0.3–0.7 wt% Cu and 35 ...
Extraction of copper from copper slag: Mineralogical
Copper slag was subjected to in-depth mineralogical characterization by integrated instrumental techniques and evaluated for the efficacy of physical beneficiation and mixed meso-acidophilic bioleaching tests towards recovery of copper. Point-to-point mineral chemistry of the copper slag is discussed in detail to give better insight into the …
Dissolution of copper from smelting slag by leaching in …
Abstract. Leaching of copper smelting slag in chloride media was studied. The lixiviants used were aqueous solutions of hydrochloric acid (0.5-2.0 M HCl) as well as hydrogen peroxide and hydrochloric acid (0.5-3.0 M H2O2, 1.0 M HCl). The maximum final copper extraction from the slag of 73% was attained with 3 M H.
Effect of sample preparation on contaminant leaching from copper
This study points out the importance of sample preparation and pH conditions when assessing the environmental risk related to smelting slag using the leaching tests based on standardised procedures. The contaminant (Cu, Co, Zn) leaching from a copper smelter slag showed a strong dependence on the granulometry and pH.
Recovery of valuable metals from copper slag | Mining, …
Article 28 September 2022. Recovery of Copper, Lead and Zinc from Copper Flash Converting Slag by the Sulfurization-Reduction Process. Article 21 …
A new technology for copper slag reduction to get molten …
The change of iron composition as well as the removal of copper from iron was investigated in the reduction process, and a new way to deal with copper slag was proposed. The iron in copper slag exists mainly in the form of fayalite, and the copper sulfide content accounts for just about 50%. Therefore, the magnetic separation as well …
Extraction of copper from copper slag: Mineralogical
Point-to-point mineral chemistry of the copper slag is discussed in detail to give better insight into the association of copper in slag. Characterization studies of the …
Characterization of Copper Slag | SpringerLink
Abstract. Copper slag can be treated as a secondary resource since it usually contains a substantial amount of copper and other valuable metals. Characterization of the slags to determine the expected metal recovery is essential for the design of separation flow sheets. In this study, the chemical and mineralogical composition of a copper slag ...
Characterization and Recovery of Copper from Converter Copper Slag …
Converter copper slag can be viewed as an important secondary resource for valuable metals, considering its high commercial value. The current research investigates the recycling of copper by a combination of theoretical and experimental methods. Based on a modified Stokes equation, it was determined that copper droplets in the molten …
Extraction of copper from copper slag: Mineralogical
The recovery of copper from secondary waste resources (e.g. electronic wastes, slag, fly-ash, sludge and spent catalysts) via oxidative and reductive bioleaching becomes a running trend and a ...