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A reduction study of copper slag in a DC arc furnace. O. Yucel, F. Şahin, +1 author. O. Addemir. Published 1999. Materials Science, Engineering. Scandinavian Journal of …
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The metal in copper slag was recovered by flotation. ... Textural, mineralogical and chemical characteristics of copper reverb furnace smelter slag of the okiep copper district, south africa. Miner. Eng., 52 (2013), pp. 184-190, 10.1016/j.mineng.2013.06.020. View PDF View article View in Scopus Google Scholar
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to copper loss to the slag predominantly in the form of copper (I) oxide [Reddy et al. 2003]. Hence, the recent trends of copper smelting invariably lead to significant
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The cleaning of copper slag is an important way to realize the sustainable development of the copper metallurgy industry. CaO is a commonly used additive in the process of slag type regulation and has an important impact on the physicochemical properties of copper slag. However, there are few studies on the mechanism of the …
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Such conditions include operating the electric furnace at metallic copper saturation, maintaining the %Fe in the electric furnace matte between 6 wt.% and 9 wt.%, not exceeding a slag temperature ...
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Copper smelting slag is a solution of molten oxides created during the copper smelting and refining process, and about 1.5 million tons of copper slag are generated annually in Korea. The oxides in copper smelting slag include ferrous (FeO), ferric oxide (Fe2O3), silica (SiO2 from flux), alumina (AI2O3), calcia (CaO) and …
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The Okiep Copper District is located 600 km north of Cape Town in the north-western part of the Northern Cape Province, South Africa and includes the towns of Springbok, Okiep, Nababeep and Concordia.It is the oldest mining district in the country and has been a copper producer for more than 150 years.Copper smelters have been in …
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of copper from the slag. Experimental Materials. Industrial copper blast furnace slag was used in this study. Slag sampIes received from the furnace were crushed to less than 3 mm, and 100-g slag sampIes were prepared by means of mechanical splitting. Carbon in the form of graphite powder (-200 mesh, 74 fim) containing greater than 99% fixed
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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 …
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Differences exist between copper slag and traditional blast-furnace slag in terms of recovery methods, along with difficulties. These are mainly reflected in the following aspects: (1) Composition: Compared with blast-furnace slag, copper slag contains large amounts of iron, copper, and other metals. Therefore, the aspects of …
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The authors further consider that under exceptionally well-controlled conditions, a copper content in electric furnace discard slag between 0.55 wt.% and 0.7 wt.% can be obtained, by...
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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 …
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Modelling of copper (I) oxide reduction in a copper slag cleaning furnace. November 2022. Conference: COPPER 2022. At: Santiago, Chile. Authors: Anton …
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Recovery of Copper and Silver by Flotation from Smelting Copper Slags. Xian Xie K. Hou X. Tong Y. Zhou X. Lv. Materials Science. 2014. The recovery of copper from smeltery furnace slag by flotation has been studied. By analysis the slag containing 1.61% copper and 27.80g/t silver is available to recovery.
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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 ...
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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 …
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Fig. 1 displays XRD patterns for the copper slag, steel slag, chlorinated sample, and reduced sample. The copper slag mainly comprises fayalite (Fe 2 SiO 4), ferrous oxide (FeO) and magnetite (Fe 3 O 4); the steel slag is mainly composed of dicalcium silicate (Ca 2 SiO 4), tricalcium silicate (Ca 3 SiO 5) and calcium ferrite (Ca 2 …
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Using the developed computational model, we simulated copper (I) oxide reduc-tion from of the initial mass fraction of copper (I) oxide in the slag (e.g., 4 wt.%) down to 25% (e.g., 1 wt.%) in all six cases (Table 1). In each case this took a different amount of time to achieve. The longest reduction time was recorded in the case ...
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Secondary copper blast furnace slag was treated with carbon to derive the conditions for maximum recovery of copper with minimum simultaneous reduction of …
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Copper slag (CS), as industrial waste, is discarded from the copper smelting and copper refining process. It has been estimated that the global annual output of CS is more than 60 million tons per year [19], which may contain elevated levels of certain heavy metals, including Cu, Zn, Pb and As [20]. Conventionally, CS is mainly piled up …
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Commonly used alkali activation precursors such as blast furnace slag and fly ash will soon become less available due to resource competition, and may cease to be produced in certain regions. This limitation in future supply is a main driving force for the investigation of alternative precursor sources, such as non-blast furnace slags and non …
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5) Noranda-Teniente with dry feed – Slag Flotation and. 6) Noranda Reactor (filter cake) - Peirce-Smith Converting – Slag Flotation. The Flash Smelting had the lowest energy consumption with 10,784 MJ/t of anode copper and the Noranda Reactor the highest energy consumption with 13,072 MJ/t of anode copper.
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The theory of RHF key performance indicators has also been developed to reduce the copper losses in RHF slag. The RHF KPIs Theory has been applied in Mount Isa Copper Smelter. The copper losses in ...
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During the pyrometallurgical extraction of copper, a significant fraction of this metal is lost with discard slag, which decreases profits and overall copper recovery. These copper losses can be reduced by using a settling furnace, in which suspended droplets containing copper separate from slag under the influence of gravity. An industrial trial …
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Hence, the recent trends of copper smelting invariably lead to significant copper loss in slag, which needs to be recovered by means of reduction and settling in a separate slag cleaning furnace. The reduction of Cu 2 O from slags is carried out by adding carbon/coke or by injection of various reductants (e.g., different types of oil or …
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The leaching tests for copper slag and copper tailing were performed following TCLP (EPA, 2009), as listed in Table 5. According to the leaching test result of copper slag, all the heavy metal components are below the threshold from the US EPA (EPA, 2009). However, the leaching test results of copper tailing exceed the safe limits.
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Abstract. The main aim of the electric furnace treatment in the primary copper industry is the reduction of valuable metals such as zinc, lead or copper itself. On the one hand legal restrictions for the further use of the treated slag are constantly getting stricter while on the other every type of loss in the oxidic phase leads to economic ...
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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 …
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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 …
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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 ...
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