The copper flotation recovery rate is generally above 90%, the copper concentrate grade is greater than 20%, and the tailings contain 0.3% to 0.5% copper. Common ones include rapid flotation and flash flotation. Fast …
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Copper slag flotation was studied on an industrial scale at a concentrator plant in the region of Atacama, Chile. This study consisted of the physical, chemical, and mineralogical characterization of the copper slag, along with preliminary flotation tests. This article focuses on industrial flotation, which consisted of two one-year campaigns ...
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The separation of copper and arsenic has always been a major problem of the flotation beneficiation process, which is affected by the multiple factors: the chemical speciation and mineralogical structure of elements in slag as well as the processing conditions such as pH of the pulp, the concentration of agents and the number of additives, etc. (Ma et al., 2016; Alter, …
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Various flotation reagents that are commonly used for copper flotation were identified, selected and used during the flotation test work in order to identify the best reagent best suited to float the copper slags. ... Improving beneficiation of copper and iron from copper slag by modifying the molten copper slag. Metals, 86 (6) (2016), pp. 1-17 ...
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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 decomposition …
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The flotation of copper slag can effectively recover copper, without recycling other valuable metals in the copper slag. However, this process requires a much higher water content and offers relatively low environmental benefits. Moreover, large areas are occupied by cinder ladles in this process, and a long time is required for slow cooling ...
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In this study, a hydrometallurgical method for the recovery of copper, cobalt, and zinc from copper slag flotation tailings (SFT) was investigated. SFT contains large amounts of valuable metallic …
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The beneficiation of copper slag employing gravity concentration and froth flotation, with particular emphasis on different collector systems, has been reviewed thoroughly. …
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In this study, the flotation wastes of copper slag (FWCS) obtained from The Black Sea Copper Works (Samsun, Turkey) was used. The chemical compositions of the FWCS (Table 1) were evaluated by using X-ray fluorescence techniques and ICP/ES and MS (ACME Anal. Lab.).As can be seen in Table 1, the FWCS sample contained significant levels of Fe 2 O 3 …
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Flotation is the main process for processing slag for valorization of copper and other metals. In order to achieve the best copper recovery and quality of the concentrate, it is necessary to optimize the whole process starting from grinding, i.e., liberation of copper bearing minerals from gangue [] [] [], flotation parameters such as pulp' density, pH, conditioning and flotation time, …
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In this paper, the ferric leaching of slag flotation tailings is studied. Copper extractions of 66% are achieved by ferric leaching, and Cu content in tailings is reduced from 0.78% to 0.24%.
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The optimum condition for flotation of the reverberatory furnace slag at Sarcheshmeh Copper Complex is as follows : pH=11.5; R407=30 g/t; solid in pulp=30%; flotation time=12.5 min; MIBC=35 g/t. Slow cooling of the molten slag (in the range of 1300–900 °C) increases the copper recovery considerably (about 85%), and can also reduce the ...
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Flotation is the dominant beneficiation method at present, which mainly aims at utilizing the residual copper in the slag (Zhou et al., 2021; Piatak and Parsons, 2015).However, in order to float out copper sulfide encapsulated in fayalite, a large amount of energy is required to fully grind the copper slag, while other valuable elements are not utilized (Guo et al., 2018a).
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The nature of copper slag flotation is unique due to the high temperature in the flotation pulp and high metallic copper content in the feed. Despite its great potential for valorizing slag, copper slag flotation remains challenging due to the deactivation of traditional dithiocarbonate (DTC) collectors (e.g., butyl xanthate) under high temperatures.
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Copper recoveries from the Converter, TSL, Reverberatory and mixed slag at different flotation conditions. One of the results obtained after flotation and used to calculate …
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Copper smelting slag (CSS) is commonly generated during the smelting process of the copper concentrate, it comprises a range of valuable metals, especially the valuable copper (Cu), possessing the greatest recovery value. Currently, direct flotation is commonly used to recover Cu from CSS, but the Cu recovery rate is usually below 90%. To gain insight into …
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In this study, a hydrometallurgical method for the recovery of copper, cobalt, and zinc from copper slag flotation tailings (SFT) was investigated. SFT contains large amounts of valuable metallic compounds, such as copper, cobalt, and zinc. A representative SFT sample containing 0.50% Cu, 0.148% Co, 3.93% Zn, and 39.50% Fe was used in experimental studies. High-pressure …
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Tailings from an industrial copper slag cleaning milling and flotation circuit have been pre-reduced at low temperatures, well below its melting point, using CH 4-H 2-Ar mixtures with the aim of metallizing its iron oxide component to metallic iron.The treatment carried out at 700–900 °C, with a duration of up to 90 min, indicated a complete transformation of magnetite …
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Consequently, flotation was attempted to recycle Cu in slag containing copper sulphide components. Three key factors affecting flotation were ascertained, namely, grinding …
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Copper slag flotation was studied on an industrial scale at a concentrator plant in the region of Atacama, Chile. This study consisted of the physical, chemical, and mineralogical characterization of the copper slag, along with preliminary flotation tests. This article focuses on industrial flotation, which consisted of two oneyear campaigns (2016 and 2017).
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In this study, copper slag flotation tailings (CSFT) were taken as an example, and the microexistence forms of valuable metals were analyzed through XRD and SEM-EDS.
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The raw materials used in this study were flotation copper slag, straw powder, straw carbon powder, magnesium oxide (purity ≥ 99.99 %) and ferric oxide (purity ≥ 97 %). The main chemical components of the copper slag and straw powder are detailed in the supporting materials. The particle size of all the raw materials was less than 74 µm.
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Copper smelter slag and copper smelter slag flotation tailings were leached using sulphuric acid solutions, without or with the addition of either ferric sulphate or hydrogen peroxide.
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Copper slag flotation was studied on an industrial scale at a concentrator plant in the region of Atacama, Chile. This study consisted of the physical, chemical, and mineralogical characterization ...
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The following parameters were therefore recommended for chemical leaching of copper converter slag flotation tailings: pulp density 30% (w/v), pH 1.5, 70 °C, initial Fe 3 + concentration 15.7 g/L, no aeration, leaching for 1.5 h. These conditions resulted in solubilization of 81.6 and 37.7% of copper and zinc, respectively, while iron recovery ...
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In this study, a sodium carbonate combined with mechanical activation enhanced flotation for recovering copper from copper slag was developed. Based on the phase analysis, the flotation experiment was conducted.
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Metal Losses to the Slag in Smelting and Converting. 80% of the copper produced from ores worldwide originates from sulfide ores. The copper concentrate which results from flotation of the ore is typically smelted and converted to blister copper [].During smelting S and Fe are oxidized, where SiO 2 is added to form a liquid ferric or ferrous silicate slag.
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Shamsi et al. [] studied the effect of copper slag particle size on the flotation effect, the highest copper recovery efficiency of 79.89%was achieved when the grinding time was 80 min and the grinding size was 48 μm [].Sibanda et al. [] controlled the size of copper slag and flotation reagents to improve copper recovery by 16% when the particle size of copper slag was 45 μm.
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