Nickel smelting slag contains valuable metals including nickel and copper. Failure to recycle these metals wastes resources, and disposal of nickel slag in stockpiles results in environmental pollution. Nickel slag recycling is important, and metals can be recovered from slag by flotation. However, considering the complex forms in which valuable metals occur in nickel slag, high yields are ...
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Li et al. investigated the effects of particle size, impeller speed, flotation concentration, pH adjuster, and collector addition on the flotation performance of carbon anode slag. They concluded that under the optimal conditions, the carbon purity increased from % to %, and the carbon recovery rate was as high as %.
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One example of contaminants that have emerged as a health concern in drinking water is a group of chemicals collectively referred to as perfluoroalkyl and polyfluoroalkyl substances (PFAS ...
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Tiextraction blast furnace slag (EBFS) is a secondary slag produced by titanium extraction of titaniumbearing blast furnace slag (TBBFS), which is challenging to be used directly because of its residual carbon and chlorine. This study was performed to recover the residual carbon and remove chlorine from EBFS by froth flotation. The finely ground EBFS (FEBFS) contained graphitized carbon and ...
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The conditions of flotation and magnetic separation process for unmodified copper slag is similar to modified copper slag, and the results compared with each other are shown in Figure 10. As seen in Figure 10, the iron recovering from flotation tailings of two types of slag, presents a great difference in the magnetic separation process.
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The increase of grinding fineness from 50% to 70% of grain size < mm showed a positive impact on flotation indicators, recovery rate, copper grade and yield, for all investigated collectors ...
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The effects of CaO, Al2O3, and MgO additions, singly or in combination, on the copper solubility, the Fe3VFe2+ ratio in slag, and on the minorelement behavior of silicasaturated iron silicate ...
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Our group has recently modified the #SAG mill liners of the #slag flotation plant at sarcheshmeh #copper complex based on numerical #simulation and longterm 3D scanning.
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Flotation Test Procedure. The amenability of the different slags to concentration by flotation was determined by the following procedure. Standard 500gram charges of the drycrushed slag were wet ground at solids in an iron ball mill, wet screened to remove any plus 65mesh metallic particles and the pH of the pulp determined.
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Physical Beneficiation. Flotation is an effective physical beneficiation for the recovery of copper in metallic and sulphide states entrapped in a copper slag by fine grinding, and addition of one or more corresponding flotation reagents, such as a collector, frother, depressant, pH regulator, dispersant, flocculant, or vulcanising agent.
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Integrated steel plants utilize mostly five materials such as raw materials, air, water, fuel and power to produce steel. During the production of steel, 24 t of wastes are being generated per tonne of steel various solid wastes in the form of slags and sludges that are emerged from steel plants are blast furnace slag, blast furnace flue dust and sludge, LinzDonawitz (LD ...
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The FLOTATION PROCESS is one of the commonest methods of extracting the valuable minerals from certain classes of ores, and it is generally more efficient as regards the recovery of the minerals than any other process applicable to the treatment of similar types of ores. The metallic contents of the minerals are recovered from the concentrates in a subsequent series of metallurgical operations ...
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Pyrometallurgy: Roasting, Smelting, Refining Calcining + Electrowinning. All aspects of pyrometallurgical processes operations and maintenance are opened for discussion: Calcination, roasting, smelting and refining (flux, slag) as applied to any metal including but not limited to Au, Ag, PGM, Fe, Cu, Cr, Zn, Pb, Sn and the utilisation of ...
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The overall impact of the unfavourable cyanide speciation, down the heap, is dependent on the cyanide concentration and pH prevailing in the percolating solution. ..., Hille,, Jacob, N. P. 2007. Differential Flotation Commissioning at Telfer. Ninth Mill Operators' Conference 2007. Australasian Institute of Mining and Metallurgy ...
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The recovery of copper and cobalt from ancient copper slags from the Küre region of Turkey was investigated. A fayalitictype of ancient copper slag containing % Cu, % Co and % Fe ...
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Flotation Tests. The slag was crushed in a jaw crusher and ground in a ball mill and then sieved. NethylOisopropyl thiocarbamate (Z200), ethyl xanthate, butyl xanthate, isopentyl xanthate and butylamine dithiophosphate were used as collectors; terpineol oil as frother; sulphuric acid, lime, sodium hydroxide and sodium carbonate as pH regulator.
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The treatment of smelting slag has attracted much attention nowadays. This study investigates the influence of Na2S, CuSO4, and FeCl3 on sulphidizing flotation of copper oxide. The results show that a proper Cu2+ concentration can increase the sulphidizing effect of copper oxide, while Fe3+ inhibits the sulphidizing effect ...
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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 (, butyl xanthate) under high temperatures.
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As early as in 1960, Rey and Formanek (1960) demonstrated the effects of milling on mineral flotation. Using synthetic ores, they found that sphalerite showed natural floatability (Rey and Formanek, 1960). However, grinding the ores in an iron mill reduced the natural floatability of sphalerite significantly (Rey and Formanek, 1960).
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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 %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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Jul 31, 2020 impacts of slag mill and flotation hearth, and is covered by a slag phase which contains the gangue species, and a minimum amount of PGMs The PGMrich sulphide matte Froth flotation Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic This is used in mineral processing, paper recycling and ...
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This process uses a series of physical steps and high temperatures to extract and purify copper from copper sulfide ores, in four basic steps: 1) froth flotation, 2) thickening, 3) smelting, and 4) electrolysis. Following mining, transporting, and crushing to a consistent gravel or golf ballsize, the crushed ore is further processed at a mill ...
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Abstract and Figures. In the current research work, influences of particle size, grinding time, and agitation rate on the flotation of a copper sample from Sungun copper mine (E. Azerbaijan, ...
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1. Introduction. One of the main goals of solid waste management is to maximize its recycling and reusing ability (Hong and Li, 2011).Blast furnace slag (BFS) is the residue and solid waste from ironsteel metallurgical industry, whose storage not only occupies a large amount of land resources but also causes environmental pollution to the soil, underground water and atmosphere.
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While there are various operational aspects that have a significant impact on the flotation behavior of Cu smelting slags, ... each sample was ground with a laboratoryscale ball mill (Technical research center of Finland, type 14MK3/9) with a volume of l using a ball charge of kg and a solids content of 50 % for 5 min to reach a ...
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Gasification fine slag is a kind of solid waste, and there is a large number of fine slags need to be recycled and reused for environmental consideration. The froth flotation kinetics experiment was adopted to recycle the residual carbon, carbon recovery percentage of % and the loss on ignition (LOI) of % were obtained.
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Interaction effects of reagents on the efficiency of copper flotation for a highly clayey lowgrade sulphide ore were investigated using a central composite design. Preliminary results showed that sodiumisopropylxanthate (SIPX) and OisopropylNethylthionocarbamate (IPETC) were found to be the most efficient collectors in the presence of lime as the pH regulator.
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