copper ores molybdenite

Recovery of molybdenum and copper from porphyry ore via
2017.10.1 A copper–molybdenum iso-flotability flotation process has been developed to efficiently improve the recovery of molybdenite from Duobaoshan porphyry Cu–Mo
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(PDF) Investigation of effective parameters for
2014.1.1 The study of the flotation of copper and molybdenite ores indicates that the recovery of molybdenite and copper flotation is reduced in the coarse, fine and very fine size ranges of these...
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A study of mechanisms affecting molybdenite recovery in a bulk copper ...
2009.12.8 The major factors affecting the flotation recovery of molybdenite from both porphyry and skarn copper ores are discussed. It is suggested that the lower flotation
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A process mineralogy approach to study the efficiency of
2020.12.3 The study of the flotation of copper and molybdenite ores indicates that the recovery of molybdenite and copper flotation is reduced in the coarse, fine and very fine
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Improving the Copper-Molybdenum Ores Flotation
2022.11.8 nology of processing copper–molybdenum ores using a combined collector emulsion. The object of research was copper–molybdenum ore containing 0.43% copper
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Improving the Copper-Molybdenum Ores Flotation
2022.11.8 mineralogical analysis showed that the ore contains the minerals molybdenite, pyrite, chalcopyrite, chalcocite, quartz, albite and a number of less
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(PDF) Improving the Copper-Molybdenum Ores Flotation
2022.11.8 The object of research was copper–molybdenum ore containing 0.43% copper and 0.0089% molybdenum. Copper minerals are represented by chalcopyrite
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Technical challenges in the flotation of molybdenite from
2010.1.1 In typical bulk copper/molybdenum flotation circuits, the copper sulfide minerals generally show higher and more stable flotation rate and recovery, while
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Minerals Free Full-Text Substantiation of New
2023.3.7 Copper–molybdenum ores belong to very hard-to-beneficiate mineral resource due to low content of valuable metals, the variability of the mineral composition, uneven and relatively large
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A novel approach for preferential flotation recovery of molybdenite ...
2012.10.1 There are several flow sheets (listed in Fig. 1 a and b) used in the flotation recovery of copper and molybdenum from their porphyry sulfide ores. Fig. 1 a is a typical flow sheet that consists of two stages (Raghavan and Hsu, 1984, Bulatovic, 2007, Liu et al., 2011).The first stage, commonly known as the copper circuit, produces a bulk copper
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Metals Free Full-Text A Review of Recent
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
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Study of Molybdenite Floatability: Effect of Clays
2022.2.1 These clays are common in porphyry copper-molybdenite ores. Therefore, the recovery of molybdenite would lower due to the adhesion of these clays on the hydrophobic face of molybdenite. Two
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Depressants for separation of chalcopyrite and molybdenite:
2023.10.1 Copper and molybdenum ores are usually associated closely. More than 75% of copper and 50% of molybdenum resources in the world come from porphyry copper-molybdenum deposits (Bulatovic, 2008, Lin et al., 2017, Yang et al., 2022a). c. Chalcopyrite and molybdenite have little difference in surface wettability and flotability. d.
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Technical challenges in the flotation of molybdenite from
2010.1.1 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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Investigation into the flotation response of refractory
2016.11.1 Introduction. The Jinduicheng molybdenum mine is located in Shanxi province and currently processes ores at over 30,000 t/d.Molybdenite concentrate is recovered as the main product in two stages; first, the bulk flotation concentrate of copper, lead and molybdenite is produced, and second, the molybdenum minerals are separated
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Hemicelluloses monosaccharides and their effect on molybdenite ...
2020.8.1 The use of biodegradable reagents such as hemicelluloses was shown to improve copper recovery from high clay ores, but, at the same time these reagents also depressed molybdenite. Hemicelluloses are heteropolysaccharides formed by monosaccharides such as xylose, glucose, arabinose, galactose, and mannose.Since
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The impact of seawater with calcium and magnesium
2017.8.1 The use of seawater in the flotation of copper-molybdenum sulphide ores is becoming increasingly important. However, the complex chemistry by the presence of calcium and magnesium hydroxyl-complexes interferes with the recovery of molybdenite.This study analyzes the impact of pre-treated seawater with calcium and
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Flotation in Seawater Mining, Metallurgy Exploration
2018.11.1 In the flotation of sulfide ores, such as nickel or copper ores, with xanthate-like collectors, the xanthate collector is apparently not affected by pulp ionic strength and only adjustment of frother may be required. ... If molybdenite depression is caused by the hydrolysis products of Mg 2+ ions, then the obvious solution of the problem would ...
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Multiple episodes of mineralization revealed by Re-Os molybdenite ...
2017.5.19 The Lala Fe-Cu deposit is one of the largest iron oxide-copper-gold (IOCG) deposits in the Kangdian copper belt, southwest China. ... Zhao et al. reported molybdenite Re-Os ages of 1654 ± 7 Ma for magnetite ores, and molybdenite Re-Os ages of 1451 ± 6 Ma for hydrothermal veins from the Yinachang deposit. Hou et al. obtained a ...
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Separation of talc and molybdenite: challenges and
2019.11.1 Abstract. Talc is one of the most problematic hydrophobic gangue minerals that occur in sulfide ores such as molybdenite and Pt-bearing nickel sulfide ores. Owing to its strong natural hydrophobicity, talc can easily float into the sulfide mineral concentrates, which not only lowers concentrate grade but also adversely affects subsequent smelting.
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Minerals Free Full-Text Flotation of Chalcopyrite
Although chalcopyrite recovery and grade are generally high in the flotation of most copper and molybdenum ores, this is not the case for molybdenite, whose flotation is much lower and sensitive to changes in hydrodynamic
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Evaluation of the replacement of NaCN with depressant
2017.2.1 Statistically, about one-half molybdenite concentrate derives from copper-sulfide ores [9,10]. Thus, in the molybdenite mineral processing plant, the effect of Cu-Mo separation is one of the most ...
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An investigation of the factors affecting the recovery of molybdenite ...
2008.11.1 Nested within the copper ore body are overlapping zones of molybdenum, gold and silver containing 0.06% molybdenum, 0.3 g/tonne gold and 1.5 g/tonne silver. Kennecott was the first company to successfully produce molybdenum concentrate as a byproduct from relatively low grade ores and in 1936 produced approximately 1 million
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An investigation of the factors affecting the recovery of molybdenite ...
2008.11.1 Nested within the copper ore body are overlapping zones of molybdenum, gold and silver containing 0.06% molybdenum, 0.3 g/tonne gold and 1.5 g/tonne silver. Kennecott was the first company to successfully produce molybdenum concentrate as a byproduct from relatively low grade ores and in 1936 produced approximately 1 million
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A process mineralogy approach to study the efficiency of
2020.12.3 Molybdenite is a sulfide mineral and is often found in copper-molybdenum porphyry deposits, which is processed as a by-product of copper during the flotation process 10. Molybdenite mineral is one ...
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Understanding the mechanism of froth flotation of molybdenite
2021.3.15 To date, 95% of molybdenum production comes from molybdenite in porphyry Cu-Mo ores (John and Taylor, 2016). Froth flotation is commonly used in concentrating molybdenite from ground ores (Castro et al., 2016, Triffett et al., 2008).
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Effect of Sodium Sulfite on Floatability of Chalcopyrite and Molybdenite
2018.4.22 Sodium hydrogen sulfide (NaHS) is commonly used as a copper depressant in the selective flotation of copper and molybdenum ores. However, the process is facing health and safety issues because NaHS readily yields toxic hydrogen sulfide gas (H2S) under acidic conditions. In this study, Na2SO3 was proposed as an alternative
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Mineralogical Prediction on the Flotation Behavior of Copper
2021.8.11 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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Factors affecting the flotation recovery of molybdenite from porphyry ...
1984.1.1 Abstract. Investigations have been conducted to characterize the surface chemical and flotation properties of molybdenite in aqueous environments typical of those that exist in the copper circuits of plants which process porphyry copper ores. These investigations have revealed that molybdenite and quartz particles are negatively
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A novel approach for preferential flotation recovery of molybdenite ...
2012.10.1 The second stage subjects the bulk copper–molybdenum sulfide concentrate to a selective flotation technique to separate molybdenite from copper sulfide. In the copper circuit, typically 1–4 kg/ton of lime is added to maintain an alkaline pH for the depression of pyrite. The calcium species releases into the solution from the lime could ...
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The Interaction between Ca2+ and Molybdenite
2017.8.9 In this paper, the influence of Ca2+ on the flotation of a skarn type molybdenum ore and pure molybdenite mineral at pH 8 was studied using diesel as the collector. It was found that Ca2+ had little
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Oxidation-reduction effects in the flotation of copper sulfide
2022.4.1 Copper-molybdenum porphyry ores often contain copper sulfide minerals, molybdenite, pyrite, iron oxides, and gangue minerals. Due to the differences in the flotation properties of sulfide minerals and associated gangues, flotation is the most common method for processing copper-molybdenum sulfide ores.
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Selective separation of copper-molybdenum sulfides using humic acids
2019.3.15 Copper and molybdenum are important metal resources, efficient treatment and utilization of copper and molybdenum ores are of great significance to the development of economy and technology in the world. Flotation separation of chalcopyrite and molybdenite is an enormous challenge faced by mineral processing, since
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The role of morphology and host rock lithology on the
2011.1.1 Molybdenite flotation in the bulk copper/molybdenum flotation circuit at Kennecott Utah Copper was studied by means of a combination of plant metallurgical surveys, laboratory flotation tests ...
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INVESTIGATION OF EFFECTIVE PARAMETERS FOR
The problems associated with the recovery of molybdenite from porphyry copper ores were summed up by Hernlund (1961). He expressed that the mineralogy of the deposit and the slime coating of molybdenite to be particularly detrimental to the molybdenite recovery. Cuthbertson (1961) also showed that clay minerals, particularly
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Evaluation of the possibility of copper recovery from tailings
2018.1.10 As previously mentioned, the molybdenite concentrate is recovered as the main product over a two-stage process. First, a bulk sulfide concentrate with molybdenum and other sulfide ores is produced followed by the adoption of sodium cyanide as a depressant to separate the molybdenite from other unwanted sulfide ores (Yin et al.,
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(PDF) Recovery of molybdenum and copper from porphyry
2017.10.1 A copper–molybdenum iso-flotability flotation process has been developed to efficiently improve the recovery of molybdenite from Duobaoshan porphyry Cu–Mo ores. The effects of flotation ...
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The Challenges and Prospects of Recovering Fine Copper
2022.5.6 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
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Understanding the effect of sulphate in mining-process
2021.5.1 The present paper deals with the effects of sulphate ions on copper mineral flotation in two copper ores: one where chalcopyrite is associated with molybdenite and the other with sphalerite. Complementary studies of single mineral flotation of chalcopyrite and molybdenite, their surface analyses and particle-bubble interaction are also ...
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