Furnace Copper Slag
Minimization of Copper Losses in Copper …
The electric furnace or rotary slag-cleaning furnace are now generally used to perform this task, giving a level of copper in discard slag typically in the range of 0.55 wt.% and 1.3 wt.%, with most plants reporting …
Flash Smelting of Copper
Copper matte and slag melt are separated in the settler. The slag layer is 0.5 m thick, while the copper matte layer is 0.2–1 m thick. Copper matte and slag are discharged intermittently from the furnace. The slag, with a copper content of 1–2%, is cleaned, quenched with water, and then discarded. The copper matte is transferred by a ladle ...
Copper Slag as a Source of Iron: An Overview | SpringerLink
The high temperature of copper slag derived from furnaces (>1300 °C) indicates the potential for reclaiming substantial energy. Integrating waste heat and metal recovery techniques makes it possible to address the issues above. However, most research on recovery lacks an economic analysis of their technologies. Due to its high Fe content ...
Recovery of copper from copper blast furnace slag
Secondary copper blast furnace slag was treated with carbon to derive the conditions for maximum recovery of copper with minimum simultaneous reduction of iron oxide. Experiments were carried out to study the effects of parameters such as temperature, carbon addition and CaO addition to the slag on the efficient recovery of copper. A two-stage …
Preparation and hydration process of copper slag …
In this study, copper slag (CS) and granulated blast furnace slag (GBFS) were used to replace cement to address the low activity of CS, which limits its large-scale utilization. The dissolution characteristics, compressive strength, hydration products, and microstructure of the composite cementitious materials containing CS and GBFS were ...
A reduction study of copper slag in a DC arc furnace
In the present work, the effects of amount of coke, reduction temperature, flux addition, and furnace types on copper slag smelting in a DC arc furnace were studied. The optimum coke amount was found to be 10% of the slag weight in an open-top furnace for a 1 h reduction time in the temperature between 1703 and 1753 K. Similar conditions in a closed-top furnace resulted …
Application of steel slags, ferronickel slags, and copper …
Reactivity is the key to the successful utilization of waste materials. Ferronickel slag, copper slag, and copper tailing show a high amount of SiO 2 that forms a secondary calcium silicate hydrate if mixed with cement through a pozzolanic reaction. Steel slag has CaO as the most dominant chemical component and is close to Portland cement.
Innovative and Safe Copper Launder Design
Pyromet's patented copper launders are designed for tapping slag. The driving principle behind the use of copper launders is their high rate of energy removal. This is attributed to the high …
Electric Arc Furnace Steelmaking and Slag …
The growth of electric arc furnace (EAF) steelmaking in North America has occurred mainly in the past 40 years due to low electricity prices, an abundance of steel scrap (especially near large population centers), and the …
Resource Utilization of Copper Slag with a Focus on
Copper slagCopper slag, as one of the significant global bulk solid wastesWaste, has increasingly become a key factor restricting the green development of the copperCopper industry. ... Cleaning of a copper matte smelting slag from a water-jacket furnace by direct reduction of heavy metals. J Hazard Mater 164(2–3):856–862. Article PubMed ...
Pyrometallurgical Reduction of Copper Slag with Biochar for …
Large amounts of slag are generated during pyrometallurgical processing in copper production. Due to the presence of valuable elements, the improper disposal of huge quantities of copper slag produced, results in significant loss of resources as well as environmental issues. Analyses of the copper slag show that it contains valuable metals, particularly copper and …
An Online Visualization Model of the Slag Crust Thickness on the Copper
The slag crust thickness on the hot surface of the copper cooling staves in the high thermal load areas of a blast furnace is crucial for the safe operation and long campaign of the blast furnace. In this study, a heat transfer model for the slag crust and the copper cooling staves in a blast furnace is established. The temperature distribution in the slag crust and copper …
Slag-Hanging Capacity of Numerical Simulation and Analysis …
At present, there were two main problems with the cooling plate slag-hanging: One was that the research on the slag-hanging mechanism of cooling plate was not deep, and the other was that the calculation process of the slag layer thickness with cooling plate was unreasonable. Based on ANSYS 'birth–death element,' a slag layer iterative cycle calculation …
Density Tuning in Conjunction with Pelletizing of Reductants …
High-efficiency reduction of Fe3O4 particles in molten copper slag is the key for recovering slag-entrained copper, although restrained by the sluggish reaction kinetics of commercial powdery reductants with low density. Here, a new strategy by density tuning in conjunction with pelletizing of the powdery reductants is suggested, greatly enhancing the …
Advances in recovery of valuable metals and waste heat from copper slag
The temperature of copper slag derived from furnaces is >1300 °C, indicating the potential for recovering a large amount of potential energy. Combined waste heat and metal recovery can be adopted to address the aforementioned issues. However, most fundamental studies on recovery have not included an economic analysis of their technologies.
Comprehensive review on metallurgical recycling and …
To decrease the copper loss, a cleaning furnace (e.g. electric slag-cleaning furnace, rotary slag-cleaning furnace) is applied after the pyrometallurgical process, followed …
Melting and refining furnaces
The portfolio includes mainly shaft furnaces and shaft hearth furnaces for melting of spend anodes, copper cathodes and different copper qualities as well as drum-type furnaces as anode furnace for the refining of blister or raw copper and casting to anode copper or holding furnace for holding and casting of liquid copper, separation of slag and metal.
Copper Smelting Slag Cleaning in an Electric Furnace by
Copper slag cleaning in an industrial electric furnace commonly reduces the magnetite to < 5 wt pct, which ensures that the slag is in a proper viscosity range for …
Improved Settling Mechanisms of an Industrial Copper …
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 …
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 slag exhibited …
Blast Furnace Slag, Post-Industrial Waste or Valuable …
The addition of slag effectively reduced the zinc, copper, cadmium and lead content of the soil, while the addition of Activated Carbon slag significantly increased the content of selected PETs in the roots and aerial parts of plants. ... Blast Furnace Slag is used in the construction industry as a mineral amendment or aggregate. Their use in ...
Influence of Slag Viscosity on Copper Matte Entrainment …
Immiscible glycerol solution and silicone oil systems in the cold model experiments were used to simulate the matte and slag systems in the copper smelting furnace. In different glycerol-silicone oil systems, air was fed by a syringe pump at different injection flow rates and glass nozzle sizes to control bubble size. The bubble size could be ...
The potential for copper slag waste as a resource for a …
Copper slag waste is considered a potential world resource owing to the huge amounts being produced annually worldwide which contain significant amounts of valuable metals (Phiri et al., 2021). The global copper slag production is estimated at 752 million tons for the period between 1999 and 2019 from the 13 main producing countries (Fig. 2).
Thermodynamic Analysis of Copper Smelting, Considering …
The extent of matte entrainment depends on turbulence in the furnace, slag fluidity (viscosity/density), operating temperature [], and surface and interfacial tension of matte and slag, as described by Nakamura et al. [].Bellemans et al. summarize the following reasons for metal entrainment in slag: charging of the furnace, oxygen potential or temperature gradients which …
Electrical resistivity of eco-friendly hybrid fiber-reinforced …
Towards this goal, the article investigates the roles of ground granulated blast furnace slag (BFS) and copper slag (CS) content, in addition to hooked-end steel fiber length, on the electrical properties of eco-friendly ultra-high performance hybrid fiber-reinforced self-compacting concrete (HFR-SCC) for the first time in the literature. ...
Influences of silicate modulus and alkali content on …
To obtain a deeper understanding and enhance its practical application, the effects of silicate modulus and alkali content of water glass (WG) on the performances of alkali-activated blast furnace slag-copper slag (AAS-CS) are systematically investigated though the fluidity, setting time, hydration heat, compressive strength and drying ...
Copper Anode Furnace: Chemical, Mineralogical and …
In copper anode furnaces, the installed refractory lining is exposed to chemical attack caused by slag and copper oxide. This results in infiltration of the brick microstructure and corrosion of the bricks' inherent components. Increased temperature level changes the temperature and partial pressure during the furnace operation, as well as the copper infiltration …
Comparison of environmental performance of modern copper …
Slag is further cleaned in a slag cleaning furnace or directed to slag flotation. The SO 2 gas generated during the smelting stage is led to an acid plant to produce sulfuric acid ... The BBR-BCC process was an exception, because otherwise the discharge slag copper would have been too high with these parameters. Thus, the recovery was increased ...
Copper Slag
Copper slag is a type of dense, hard, and wear-resistant glass phase, which can be applied in the construction industry as a building foundation, subgrade material, Portland cement additive, …
Modelling of copper (I) oxide reduction in a …
We present a computational fluid mechanics model of tuyere and purging plug injection of reductants into slag that considers a first order heterogenic chemical reaction to model copper oxide...
An Overview of Sustainable Solutions Towards Recycling of …
Metallurgical slags, such as copper slag, electric arc furnace (EAF) slag, and basic oxygen furnace (BOF) slag, are byproducts of metal production processes. Traditionally seen as waste, these slags possess significant potential as a resource for metals and valuable...