With conversion of copper smelting plants to autogenic melting the problem arises of separate treatment of converter slag (CS). Almost all plants converted to autogenic melting use slag flotation [1,2,3,4,5,6,7,8,9,10].Sometimes they float a mixture of furnace and converter slags after granulation [] of a mixture of CS and original ore in different ratios [].
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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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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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Steel slag is one of the most common waste products from the steelmaking industry. Conventional methods of slag disposal can cause negative impacts on humans and the environment. In this paper, the process of steel and steel slag production, physical and chemical properties, and potential options of slag recycling were reviewed. Since steel is mainly produced through an electric arc furnace ...
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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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The impact caused by the extn. of lithium for the components of the Liion battery is less than % (Ecoindicator 99 points). The major contributor to the environmental burden caused by the battery is the supply of copper and aluminum for the prodn. of the anode and the cathode, plus the required cables or the battery management system.
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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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As a cheap, renewable and nontoxic material, starch can contribute to the sustainability of the flotation process, albeit in a minor way as one type of reagent in systems involving materials with far greater impact. But the physical and chemical versatility of starch can help address another issue, namely, that of processing complex ores with decreasing grades of valuable minerals and ...
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Enonkoski ore ground in a steel mill Soated easily without a collector at low pH values of 3}5 (Figure 1). The Soatability of these three minerals was improved when the same ore was ground in aceramic mill (Figure 2).Thissuggeststhatcollectorless Sotation in acidic pH can be adopted as a lowcost preconcentration phase to obtain a bulk sulRde
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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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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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In this paper, the results of the study of application of thionocarbamates in copper slag flotation are presented. Chemical analysis of smelter slag sample obtained from Flotation plant in Bor, Serbia, showed that it contains % of copper, of which over 73% is in the sulphide form, as well as g/t of gold and g/t of silver.
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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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Additionally, a 95 hectare, 20 million ton steel slag dump is located along the banks of the lower krn reach of Nine Mile Run. Slag dumping at this site began in the 1920s and ended in 1972 (Collins et al. 1998). To gain insight into the chemical composition of waters that drain slag, and to verify potential impacts of slag leachate, we
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269 The Slag Mill 269 The two tumbler barrels seen along side the building on a platform are filled with water and steel balls the size of softballs. As the barrels rotate the cooled slag from the slag pots (containing approximately 2% copper content) is fed into the tumblers and crushed by the tumbling steel balls.
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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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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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In the first phase of the present experimental studies, the slags were milled to 75% passing 45 microns, which is the degree of milling done in the existing plant millfloat circuit. A range of commercial flotation reagents that include xanthates, dithiophosphates, mercaptobenzothiazole, thionocarbamates, fatty acids, sulphides and sulphates were used in the flotation testwork.
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A Wemco fagergren mineral master (Model LA 500) flotation machine was used in carrying out the flotation tests. The milled slag was dewatered and placed into the flotation cell. Water was added to dilute the slurry up to approximately 30% solids by mass. Reagents specific to each test were added and a conditioning time of 3 min was allowed.
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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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A material supplier from Belgium would like to produce limestone powder for his custome...
India is rich in various mineral resources and it is an important mineral processing market
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