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·The flotation of a copper and a lead zinc sulphide ore from Mt Isa has been studied in the absence and presence of specific collectors and depressants over a range of grinding and flotation Eh
·Acid leaching followed by flotation of leaching residue [19] led to copper and sulfur recoveries of 70% and 77% respectively Conić et al [18] concluded that the most efficient technology for copper recovery from the old flotation tailings of the Bor copper mine was leaching with biogenic lixiviant Falagán et al [16] achieved copper
·little effect on the copper loss in the tailing Open circuit flotation tests were initially carried out to establish the feasibility of slag milling and to determine the required fineness of grind and flotation reagents It was found that a fine grind about 90%
·Tailing storage facilities TSF also called tailing deposits are the source of most mining related disasters Schoenberger 2016 Approaches to the handling and storage of mine tailings include riverine disposal wetland retention backfilling dry stacking and storage behind damned impoundments Kossoff et al 2014 Mine tailings dam failures can have catastrophic
One of the main problems in current flotation plants and new projects is the significant decrease in feed grades and changes in the mineral composition which has an important effect on the
·Copper tailing powder with different grinding time and different replacement ratio for cement was used as alternative mineral admixture in Portland cement copper tailing powder composite binder
·Ramakokovhu et al 2012 studied on the Leaching Characteristics of Upgraded Copper Flotation Tailings It was found out that the copper extraction increased with an increase in temperature and a decrease in pH levels The particle size distributions of aggregates are shown in Fig 1 and chemical composition of copper tailing is given in
·Lead nitrate was added as an activator for arsenopyrite rather than copper sulfate Flotation separation was more consistent with lead and the presence of lead in the cyanide leach circuit did not impact noticeably on cyanide consumption The rougher flotation tailing contained low enough gold values to be pumped directly to the tailings dam
·Due to the progressive fall of the ore grades and the increasingly refractory composition of minerals concentrating plants have increased which has led to an increase in the generation of tailings Tailings especially those obtained in the past have remaining copper and other valuable species in quantities that can potentially be recovered such as gold silver
copper smelting slag Dimitrijevic et al 2016 applied acid baking to CCS flotation tailing which did not contain Co and Zn and made a selective copper recovery after reducing the Fe solubility within the temperature range of 600 800oC Arslan and Arslan 2002 applied leaching to
·Copper froth flotation tailings containing and wt% total and acid soluble copper respectively from Chibuluma mines in the Copperbelt province of Zambia were characterized by SEM and XRD techniques A combination of froth flotation and leaching yields a final tailing of weight copper hence representing an overall recovery
·The copper tailing suspension was prepared at 30 wt% solids concentration Initially the polymer solutions of NPAM wt% and PCE wt% were prepared for all the measurements at 25 °C The copper tailing suspension of 100 mL was stirred vigorously at 500 rpm using a stirrer for 10 min in a beaker
·Introduction Copper slag flotation tailing CSFT is a by product of Cu pyro metallurgical production which accounts for more than 80 % of all Cu products produced worldwide [1] During Cu extraction molten Cu slag is generated which consists of a matrix of iron silicates Fe 2 SiO 4 metal oxides and matte droplets [1] Copper is usually recovered by
·Two copper concentrates with a copper content of and wt % with chalcopyrite as the dominant copper mineral have been leached with ferric sulphate at 12 g/L of ferric iron and pH in
·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
·The possibility of selective Cu and Zn leaching from the sample of old pyrite tailings which is one of the most widespread types of solid waste forming during non ferrous metal production using sulfuric acid solutions and water was studied It was shown that water leaching provided selective extraction of Cu and Zn and comparatively low iron ion extraction
In Table 1 the elemental composition for copper tailings does not contain any amount of Cu element It should be assumed that the copper enrichment process proceeds at an efficiency factor of 100% "Simple Compressive Strength Results of Sodium Hydroxide and Sodium Silicate Activated Copper Flotation Tailing Geopolymers" Applied Sciences
·6 102 Copper production data 103 The database compiled in this study combined extensive resources from 1 104 Geological Survey Mineral Database42 2 S&P Market Intelligence Metals and Mining 105 Report43 3 World Mining data 202044 and 4 a rigorous copper deposit 106 they represented more than 75% of annual global
·Flotation and Tailing Discarding of Copper Cobalt Sulfide Ores Based on the Process Mineralogy Characteristics Wentao Hu 1 2 3 Kai Tian 1 The mineral composition of copper cobalt ores is more complex than that of copper sulfides and it falls under the difficult beneficiation type [9] Therefore benefici
·Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method copper sulfide mineral particles are concentrated in froth and associated gangue minerals are separated as tailings However a significant amount of copper is lost into tailings during the processing; therefore tailings can be considered secondary resources or
·A copper tailing is a residue product of the flotation of sulfide minerals which contain a variety of elements that can be valorized The extraction of metals from copper tailings consist of applying metallurgical techniques such as acid leaching or magnetic concentration to obtain a valuable product
·Although basic porphyry copper flotation and metallurgy has remained virtually the same for many years the processing equipment as well as design of the mills has continually been improved to increase production while reducing operating and maintenance costs Also considerable attention is paid to automatic sensing devices and automatic controls in order to
·The mineralogical composition of a flotation waste sample is described in many publications and it was found that the most abundant sulfide mineral was pyrite and the most abundant barren
