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Copper is a moderately incompatible chalcophile element. Its behavior is strongly controlled by sulfides. The speciation of sulfur is controlled by oxygen fugacity. Therefore, porphyry Cu deposits ...
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Hernlund RW (1961) Extraction of molybdenite from copper flotation product. q Colo Sch Min 56:177–195. CAS Google Scholar Sutulov A (1977) Flotation recovery of molybdenum. ... Nakhaei F, Irannajad M (2014) Investigation of effective parameters for molybdenite recovery from porphyry copper ores in industrial flotation …
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Abstract. Molybdenite is a valuable by-product in copper flotation. Driven by economic considerations, the recovery of molybdenite from low-grade porphyry copper ores has become of great interest ...
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A similar result was obtained by Jorjani et al. [ 26 ], who investigated the flotation behavior of porphyry copper ores containing Cu minerals (e.g., chalcopyrite and chalcocite), …
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The copper ore in Chilean copper porphyry deposits is often associated with molybdenum minerals. This copper–molybdenum (Cu–Mo) sulfide ore is generally mined from various locations in the …
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The Denver cell test with a porphyry ore shows a selective flotation with IPETC at a pH of 11 with a low collector dosage (5 g/ton), achieving recoveries of 92% …
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Copper and molybdenum recovery data for a one year period of a typical porphyry copper flotation plant are reported in Fig. 1, showing high variability of molybdenum recovery with time. Download : Download full-size image; Fig. 1. Historical recovery data for a typical porphyry copper plant. Bulk copper/molybdenum flotation …
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Copper is a moderately incompatible chalcophile element. Its behavior is strongly controlled by sulfides. The speciation of sulfur is controlled by oxygen fugacity. Therefore, porphyry Cu deposits are usually oxidized (with oxygen fugacities > ΔFMQ +2) (Mungall 2002; Sun et al. 2015). The problem is that while most of the magmas at …
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The copper ore in Chilean copper porphyry deposits is often associated with molybdenum minerals. This copper–molybdenum (Cu–Mo) sulfide ore is generally mined from various locations in the mining site; thus, the mineral composition, oxidation degree, mineral particle size, and grade vary. Therefore, in the mining operation, it is …
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Because the copper in this type of ore usually assays only plus or minus 1% copper, the porphyry copper operations must be relatively large in order to be commercial. The flowsheet in this study illustrates a typical 3,000 ton per day operation. In general most operations of this type have two … See more
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3.1 Fluids Involved in Phyllic Alteration. Following Harris and Golding (), a literature review on the published O and H isotope data of phyllic alteration of PCDs indicates that porphyry copper systems may show magmatic nature in their phyllic alteration minerals (Supp. Table 1; Fig. 1).The δD and δ 18 O values of hydrothermal …
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The accessory minerals rutile and apatite have been studied in 77 known porphyry copper deposits. Their value as indicators has been well established on the basis of specific chemical and paragenetic variations which they show. Rutile occurs as the only Ti-mineral in the quartz-sericite zone, is dominant in the biotite-orthoclase zone, and is ...
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Porphyry copper deposits (PCDs) are some of the most important sources of copper (Cu) and molybdenum (Mo). Typically, the separation and recovery of chalcopyrite (CuFeS2) and molybdenite (MoS2), the major Cu and Mo minerals, respectively, in PCDs are achieved by two-step flotation involving (1) bulk flotation to separate Cu–Mo concentrates and …
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However, bismuth is seldom present in the deposits of a copper-chloride vein type or in a copper-lead-zinc vein type. Porphyry type deposits can have present bismuth. When bismuth is present as a solid …
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Molybdenum is an important alloy element for metallurgical industry because of its high temperature stability. As the major mineral reserve for molybdenum, molybdenite (MoS 2) is commonly found in porphyry copper deposits. Molybdenite is naturally floatable and can be separated from copper sulfide mineral using froth flotation.
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Porphyry copper deposits (PCDs) are the most important sources of copper worldwide, accounting for more than 60% of the annual production of copper and they constitute about 65% of known copper …
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For porphyry copper sulfide ores, the Palabora processing plant (South Africa), producing 150 000 t of ore per day, uses a flowsheet which consists of rougher and scavenger flotations with regrinding of the rougher flotation concentrate followed by recleaning and yielding a copper concentrate.
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flotation in the milling circuit – rougher flotation classification and regrinding of rougher flotation concentrate cleaning flotation with the outlet of the second component of the final tailings from the I cleaning flotation. Figure 1. A typical flowsheet used in the flotation process of porphyry copper [5]. concentrate tailing tailing O/F
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Porphyry Cu-Mo deposits, which are the most important sources of copper and molybdenum, are typically processed by flotation. In order to separate Cu and Mo minerals (mostly chalcopyrite and molybdenite), the strategy of depressing chalcopyrite while floating molybdenite has been widely adopted by using chalcopyrite depressants, …
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Flotation-smelting, gravity separation, leaching (acid tank/HPAL) and SX/EW: 22: 340: MiningTechnology, 2020h: Radomiro Tomic: Chile: Porphyry: Cu: ... Porphyry copper deposits—low-grade ores containing between 0.2% and 1% copper (Cooke and Hollings, 2005)—were selected because they are (1) widely distributed globally, (2) …
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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 ball-size, the crushed ore is further processed at a mill ...
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Figure 1 shows an example of the most common porphyry copper ore type beneficiation flowsheet. Porphyry ores, although generally contain small amount of copper below 1%, belong to easy-to-float ...
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The flotation behaviour of gold in relation to copper, in a typical porphyry copper–gold ore, has been investigated, along with the impact of collector selection and feed grind size. The mineralogical analysis of the feed, using QEMSCAN, indicates that pyrite and silicates are the main gold host minerals in the ore.
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Gold is an important by-product in many porphyry-type deposits but the distribution and chemistry of gold in such systems remains poorly understood. Here we report the results of petrographic, electron microprobe, laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), and flotation test studies of gold and …
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Porphyry copper–gold ores contain carbonates and clay minerals (Agorhom et al., 2012b, Allan and Woodcock, 2001, Bulatovic, 1997), which are detrimental to both gold and copper sulphide flotation. Gangue minerals in copper–gold ores have two negative effects on the flotation recovery process;
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The flow-sheet is shown in Fig. 48. The ore is chalcopyrite and pyrite in an alaskite-porphyry gangue. It carries 2 per cent. copper and 8 per cent. iron. The mill has a capacity of 550 tons per 24 hours, crushing to less than 4 per cent, on 60-mesh. ... copper and 15 per cent. iron. The flotation feed carries about 2 per cent, copper ...
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In-situ hydrothermal experiments using diamond-anvil cell show that sulfate and sulfide are the dominant sulfur species under P-T conditions similar to those of porphyry magmas. No sulfite was identified using in-situ Raman spectrometer. This supports that porphyry copper mineralization is controlled by sulfate reduction, rather …
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The search for effective reagents for the flotation of non-ferrous metals from mineral raw materials is an actual problem. The article discusses the results of research on improving the technology of processing copper–molybdenum ores using a combined collector emulsion. The object of research was copper–molybdenum ore containing …
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Despite extensive studies of the influence of aluminosilicate minerals on coal flotation (Jowett, 1956, Arnold and Aplan, 1986, Oats et al., 2010), little work has been done to determine the influence of aluminosilicate minerals on the flotation of non-metallic minerals (Plaksin and Ocolovich, 1965) and porphyry copper ores (Bulatovic et al ...
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A computer simulation carried out on a large porphyry copper flotation plant using a flotation model developed from first principles suggests that significant …
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