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copper slag recycling system
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 Details of the mainstream and recently developed routes for metallurgical recycling and further cleaning of copper slag are also summarised, such as flotation, Comprehensive review on metallurgical recycling and cleaning of copper slag
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Efficient Recycling of Valuable Metals from Waste Copper Slag
Copper slag is a by-product produced in the copper smelting and converting processes. [ 1] Every year, more than 40 million tons of copper slag is To understand these issues, an attempt has been made to recycle valuable metals from waste copper slag by using secondary aluminum dross as a novel Efficient Recycling of Valuable Metals from Waste
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The potential for copper slag waste as a resource for a
Recycling copper slag using innovative technologies and circular economy practices could significantly improve the stability of cobalt and copper supply and could Copper slag has long been the subject of metal recovery. However, it has become apparent that copper slag flotation tailings can meet resource requirements Comprehensive review on metallurgical recycling and cleaning of copper slag
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A Review of Comprehensive Utilization of Copper Slag of China
Full size image. The copper content of copper slag is 0.5–4.5% or even higher, which is much higher than the 0.2–0.3% mining grade of copper mines in China. Copper slag is a solid pollutant with high recyclability. Reduction and separation are regarded as effective disposal methods. However, during the melting process, the Element Distribution and Migration Behavior in the Copper Slag
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Waste to valuable resource: application of copper slag and steel slag
Waste recycling and reuse is an important component of sustainability. Extensive research is being conducted to address this issue by incorporating industrial by-product such as steel slag, copper slag, fly ash, ferro-chrome slag, and so on into the construction industry. Steel slag, which is mostly calcium carbonate, is created as a by This is a typical method for recovering waste heat from a copper slag. Using this system, the waste heat of the copper slag can be efficiently recovered, and syngas can be obtained. This method can provide heat for pyrolysis and gasification of coal, sludge, and biomass. Download : Download high-res image (148KB) Download : Advances in recovery of valuable metals and waste heat from copper slag
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Precious metal recoveries in secondary copper
In recent studies, gold distribution coefficients between copper and slag in copper—silica-saturated iron-silicate slag system (1300 °C, pO 2 = 10 −4 10 −8 atm) were measured as 10 5.5 10 7 and in 2 天之前The Kayser Recycling System is well suited for utilizing recycling materials with low copper and precious metal contents and very complex materials such as electric and electronic scrap. top blown rotary converter (TBRC) the copper content is further enriched to 95 % and tin and lead are separated into a slag. The tin-lead slag isRecycling Technology Aurubis
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Advances in Understanding the Alkali-Activated Metallurgical Slag
This paper summarized and reviewed the mechanism and macro-performance of alkali-activated metallurgical slag, including steel slag, copper slag, ferronickel slag, and lead-zinc slag. Better activated method and alkali-activator are still needed to be developed to improve the performance of the metallurgical slag with low Copper slag is a solid pollutant with high recyclability. Reduction and separation are regarded as effective disposal methods. However, during the melting process, the separation and migration behavior of elements in the copper slag is complicated. Thus, the formation of pollutants cannot be controlled merely by optimizing the operation Element Distribution and Migration Behavior in the Copper Slag
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Minerals Free Full-Text Recovery of Iron from Copper Slag
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 time, 35 wt.% coal dosage, and 20 wt.% CaO dosage (0.75 binary basicity), the Fe grade of obtained iron concentration achieved The main use of copper slag is to recycle iron or copper inside. Copper in slag was mainly Cu 2S and little Cu 2O because of the existence of FeS. The recovery body of copper slag was mainly copper matte, returned to smelting process of copper by means containing acid leaching, flotation recovery and depletion recovery.3,7,8) Copper slag con-Alternative Reduction of Copper Matte in Reduction
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A Review of Comprehensive Utilization of Copper Slag of China
Full size image. The copper content of copper slag is 0.5–4.5% or even higher, which is much higher than the 0.2–0.3% mining grade of copper mines in China. The total iron content in copper slag is about 40%, which is significantly higher than the mineable grade of iron ore in China (TFe > 27%) [ 10 ].Guorui Qu et al. [17] recovered Co, Cu, Ni, and Fe from copper slag in the form of alloys, which provided an opportunity for the recovery of copper from the smelted products to prepare high value-added products. Copper slag recycling has realized the transformation from shortening the process to improving the product value and economic Recovery of cathode copper and ternary precursors from CuS slag
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Alternatives of Copper (I) Oxide Reduction in a Copper Slag
where c(x,y,z,t) is the concentration of copper (I) oxide, k is the reaction rate constant, and A(x,y,z,t) is the specific surface of contact between the area of bubbles and the slag (available as a result of DPM-multiphase flow simulation).The kinetic Eq. 1 is implemented with user-defined functions (UDF) in FLUENT [].The competing reaction of Global copper slag (CS) emissions reached 57.2 million tons in 2021. Despite the increasing reuse of CS, the treatment of CS is still dominated by landfill so far, which not only occupies land resources but also causes damage to the environment. The application of CS to cement-based materials (CBMs) is one of the main approaches to its Materials Free Full-Text A Review of the Influence of Copper Slag
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Direct reduction of copper slag using rubber seed oil as a
The process of recycling Fe from copper slag produces new secondary waste residue. Secondary waste residue can be used as a partial starting material for the synthesis of glass-ceramics.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.Copper Recycling ScienceDirect
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我国冶金固废大宗利用技术的研究进展及趋势 USTB
在此基础上提出了固废的大宗量利用、协同利用、节能减碳利用和与智能化结合的资源化利用是这一领域技术发展的主要趋势。. Abstract: In China, the annual discharge of steel slag, red mud, copper slag, and most ferroalloy slag has reached 10–100 million tons; these slags are difficult to be resuedThe main use of copper slag is to recycle iron or copper inside. Copper in slag was mainly Cu 2S and little Cu 2O because of the existence of FeS. The recovery body of copper slag was mainly copper matte, returned to smelting process of copper by means containing acid leaching, flotation recovery and depletion recovery.3,7,8) Copper slag con-Alternative Reduction of Copper Matte in Reduction
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Recycling of tellurium via copper smelting processes
The trend, as a function of increasing oxygen partial pressure, i.e. increasing matte grade, was opposite compared to the metallic copper-slag results. Similar trends, although with lower slopes, have been reported before for PM’s and PGM’s in matte–slag systems by Avarmaa et al. . The deportment of tellurium into the copper Annually more than 400 Mt of metallurgical slags are produced worldwide [1,2,3,4,5].From the annual Cu concentrate smelter production capacity, which is equal to around 21 Mt of copper metal in 2021, it can be estimated that more than 45 Mt of CUS were produced from primary sources assuming a slag to copper ratio of 2.2 [3, 4].Only 15% of Sustainable and Comprehensive Utilization of Copper Slag: A
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Comprehensive review on metallurgical recycling and cleaning of copper slag
Currently, metallurgical recycling and further cleaning of copper slag is still not widely established, in spite of the progress in the management of copper slags in the past several decades. In the acid leaching system, O atoms combined with H + to form H 2 O, which was continuously separated from the surface to form vacancies. Cu(I) onAccording to the coexistence theory of slag structure, a calculation model for the activity of FeO in the quaternary system SiO 2-CaO-Al 2 O 3-FeO of depleted copper slag was established.The model was used to calculate and analyze the effects of temperature (T), basicity (B), and Al 2 O 3 content on the activity of FeO (N FeO).The results show that Calculation Model for Activity of FeO in Quaternary Slag System
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