The Recovery of Copper from Smelting Slag by Flotation Process
Consequently, flotation was attempted to recycle Cu in slag containing copper sulphide components. Three key factors affecting flotation were ascertained, namely, grinding fineness, the collector ...
Environmental and Socioeconomic Impact of Copper Slag …
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 ...
Matte Entrainment by SO2 Bubbles in Copper Smelting Slag
The slag, containing about 1–12% Cu, can be further processed to recover the copper contaminated, but recycle of the slag concentrate reduces overall productivity and efficiency of the operation.
Recovery of valuable metals from copper slag | Mining, …
A wide variety of processes for the recovery of valuable metals from copper slag have been proposed, which can be summed up in three types: pyrometallurgical, …
Characteristics and environmental aspects of slag: A review
1. Introduction. Slag examined in this study is defined as the predominantly silicate and oxide by-product derived from smelting metallic ore. The two main types of slag included in this discussion are from the primary production of ferrous ores, from iron and steel manufacturing, and from non-ferrous ores, from the recovery of base metals and …
Determination of occurrence and leaching toxicity of arsenic in copper …
The recovered Cu-rich slag (slag concentrate) is returned back to the smelting process, and the slag tailings would be the main output of As from the copper production system. To date, the slag tailings from the flash smelting enterprises are commonly dumped into landfill sites, while some studies have also proposed that the …
SUSTAINABLE CONSTRUCTION MATERIAL
3) Copper slag can be used as a filling material in. construction work due to its higher density. 4) Also, copper slag can be used in construction of road. as a replacement material of aggregate ...
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 …
An efficient approach to utilize copper smelting slag: …
Volume 172, 1 December 2023, Pages 182-191. Research Paper. An efficient approach to utilize copper smelting slag: Separating nonferrous metals and reducing iron oxide at high temperature. ... In the bioleaching process, copper slag is treated with bacteria, which oxidize Fe- and/or sulfur (Panda et al., 2015), ...
When Copper Kings leave, what happens to the slag?
While the latter two make up just .35 percent of the slag, there's enough slag that the lead and silica alone total nearly 200,000 tons – enough to fill almost 2,000 ore trucks stretching ...
A Review of Comprehensive Utilization of Copper Slag of …
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 …
Use of waste copper slag, a sustainable material
The utilization of solid waste is the challenge for the civil and environmental engineers to utilize the waste from different industry to excel the sustainable development, and in the same time, it is matching with the cost concern of the present materials. Copper slag is a by-product obtained during smelting and refining of copper. The waste copper …
The Recovery of Copper from Smelting Slag by Flotation Process …
Materials. The smelting slag used in this study was obtained from a copper plant in China. Mineralogical analysis, performed using scanning electron microscope (SEM) and energy dispersive X-ray spectroscope (EDS), polarizing microscope and X-ray diffraction (XRD), indicated that fayalite (Fe 2 SiO 4) and magnetite (Fe 3 O 4) phases …
Co-recovery of Mn and Fe from pyrolusite and copper slag …
Copper slag (CS) is a solid waste produced in the process of copper smelting. Typically, CS contains about 30 − 45% Fe, 30 − 40% SiO 2, and other trace elements (e.g., Zn, Mo, and Pb) (Shibayama et al. 2010; Seyrankaya 2022; Gümüşsoy et al. 2023).According to statistics, with the rapid economic development, the annual output of …
Application of steel slags, ferronickel slags, and copper …
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 aggregate (Sun et al., 2022).
Environmental and Socioeconomic Impact of …
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, …
Comprehensive Utilization of Copper Slag in a Pyro
A pyro-hydrometallurgical process for the treatment of copper slag has been developed to accomplish recovery of nickel, cobalt, and copper and reuse of iron source. It was proved that the slag phase was reconstructed by sulfation-sulfate decomposition roasting followed by water leaching, over 95% iron existing as hematite …
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 …
Green and efficient utilization of waste ferric-oxide …
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. Phase compositions of the copper slag were determined by X-ray diffraction (XRD)analyses and the result are shown in Fig. 1.
IRON AND STEEL SLAG
Processed slag sold during the year, excluding entrained metal. ... (especially copper slag), whose unit values are outside the range expected for granulated slag. In some years, tonnages may be underreported. 4. Less than 50,000 tons. 5. Defined as sales – exports. 6. Rounded to the nearest $0.50 per ton. 7. Defined as imports ‒ exports. 8.
The Phase Transition and Element Distribution of Copper Smelting Slag
Copper smelting slag is the largest solid waste produced in copper-making process, and slow cooling beneficiation technology is the most widely used method in recovering remaining treasures from the slag. The phase transition law and element distribution behaviors of the copper smelting slag in the cooling process have …
Element Distribution and Migration Behavior in the Copper Slag
The principle of the fire dilution method is that a large amount of Fe 3 O 4 in copper slag leads to an increase in slag viscosity and the loss of copper (Zhang et al., 2005). By reducing the content of magnetic Fe 3 O 4 in slag, the inclusion of copper can be reduced, and the recovery of copper can be achieved (Sun et al., 2020).
A Study of the Optimal Model of the Flotation Kinetics of Copper Slag …
aim to optimize flotation process of copper slag to achieve maximum flotation recovery of cop- ... Min. Met. Eng, 70, p. 191-204. ... such as copper slag, slag tailings can be a new potential ...
Control of Copper Content in Flash Smelting Slag and the
To determine slag properties and the factors influencing these properties for optimization of operating conditions in the copper flash smelting process, the composition and microstructures of the quenched smelting and converting slags have been analyzed. Thermodynamic software FactSage 8.2 has been used to investigate the effects of matte …
Copper recovery from copper slags through flotation …
According to the flotation kinetic model of copper slags, the adhesion process of copper slag particles is in accordance with first-order kinetics. Through the addition of sodium carbonate, the stability of the pulp can be increased and the flotation kinetics can be improved significantly. In the optimization process of flotation conditions …
The potential for copper slag waste as a resource for a …
The waste product of the smelting process would be copper slag (CS). Copper slag (CS), with an annual global production rate of more than 37 million tonnes, can be used for soil stabilization [31 ...
Environmental Benefit Assessment of Blended Cement with …
Copper slag is a by-product of the copper smelting process. One ton of refined copper produces 2–3 tons of copper slag, resulting in a total yearly production of 4.5 million tons, and an accumulated volume of 50 million tons . Granulated copper slag (GCS) is often utilized in SCMs owing to its pozzolanic activity . However, due to poor ...
Article Effect of sulfur content on copper recovery in the …
When C/O = 0.2, although the reduction in sulfur content can also improve the copper grade of matte, the copper content less than 30% will produce a lot of difficulties in subsequent utilization. It causes the increase in oxygen consumption, slag amount and copper loss of converting slag in the blowing process. S/Cu.
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. ...
Copper Scrap
Old scrap is a huge potential source of recyclable copper. It is also difficult to process. The challenges for processing old scrap include: (a) Low Cu grades – old copper scrap is often mixed with other materials and must be separated from this waste (b) ... Copper slag: 1–8%: Copper smelter slag: Copper dust: 1–50%: