The Importance of pH in Flotation - 911 Metallurgist
2015.8.10 In flotation, pH control is a vital method to control selective mineral separation. A standard depressant that is used is an Alkali. An Alkali is any substance
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(PDF) A Review of the Flotation of Copper
2017.7.4 The recovery of these copper minerals by flotation or hydrometallurgy from ores, typically containing 0.5%TCu (open pit mines) and 1-2%TCu (underground mines) is of great commercial importance....
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A Review of the Flotation of Copper Minerals - CORE
2019.12.5 Flotation of sulphidic and oxidic copper minerals is reviewed, with particular reference to previous studies of refractory copper ore flotation. Keywords:
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Flotation of copper oxide minerals: A review - ScienceDirect
2022.11.1 Copper oxide minerals are important copper resources, which include malachite, azurite, chrysocolla, cuprite, etc. Flotation is the most widely used method for
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A new perspective on copper oxide flotation: Synthesis and
2023.9.1 It was reported that in-depth research and made beneficial contributions on direct flotation collectors by researchers. Fatty acid [11], [15], phosphate ester are
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pH/ORP measurement Copper flotation process - ABB
2024.3.17 A high pH is important in copper ore processing to maximize this mineral’s flotation properties. Most copper ore slurries tend to be acidic. Plants typically add lime to
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Advances in depressants used for pyrite flotation separation
As one of the most commonly used sulfide mineral collectors ... 2 and in the pH range 7–11, copper hydroxide started to precipitate on the polysulfide ... Bulut G, Ceylan A, Soylu B, Goktepe F (2011) Role of starch and metabisulphite on pure pyrite and pyritic copper ore flotation. Physicochem Probl Miner Process 48:39–48. Google Scholar ...
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Flotation of copper oxide minerals: A review - ScienceDirect
2022.11.1 Copper oxide minerals are important copper resources, which include malachite, azurite, chrysocolla, cuprite, etc. Flotation is the most widely used method for the enrichment of copper oxide minerals in the mineral processing industry. In this paper, the surface properties of copper oxide minerals and their effects on the mineral flotation ...
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Selectively Depress Copper-Activated Pyrite in Copper Flotation
2021.1.26 Copper sulphide ore deposits are of great economic significance for copper extraction. In order to enrich copper sulphides, froth flotation at alkaline pH is typically applied to reject associated gangue minerals, in particular pyrite before the subsequent pyrometallurgical treatment to extract copper from copper sulphides [].The selective
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Froth Flotation - an overview ScienceDirect Topics
Separation of plastic wastes using froth flotation – An overview. Ozan KökkılıçShiva Mohammadi-JamPengbo ChuChristopher MarionYing YangKristian E. Waters, in Advances in Colloid and Interface Science, 2022. 5 Froth flotation. Froth flotation is a physicochemical separation process based on the differences in surface properties of materials. This
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Flotation of gold and gold-bearing ores - ScienceDirect
2005.1.1 The most widely used method of reversing the depressing effect of cyanide in the past has been to condition the flotation pulp at pH 3.5–4 with sulfuric acid, or bubbling sulfur dioxide into the slurry, and then add copper sulfate to complex the cyanide and subsequently float the pyrite (Clay and Rabone, 1951; Malloy and Tapper, 1978).
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Adsorption of copper sulphate on PGM-bearing ores and its
2016.6.1 1. Introduction. In the flotation of sulphide minerals, collectors belonging to the xanthate class are most commonly used. Activators are chemical compounds usually added to promote the interaction of collector molecules with the mineral surfaces (Rao, 2003).The most common activator used in the flotation industry is copper sulphate and it
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Frothers in flotation: A review of performance and function
2024.2.1 A few studies report the use of rhamnolipid biosurfactants as frothers in copper ore (Khoshdast et al., 2012b) and in coal (Khoshdast et al., 2011, Khoshdast and Sam, 2011) flotation processes, indicating that the use of rhamnolipid surfactant significantly increased the flotation rate of all minerals. Also, the collected interfacial tension ...
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A Review of the Flotation of Copper Minerals - CORE
2019.12.5 (CuO.SiO₂). These oxidised copper minerals are found in weathered regions of most copper sulphide ore bodies The overlaying oxidic ore is usually stockpiled after it is removed from the sulphide lode and left unprocessed as the sulphide ore is simpler to recover by conventional flotation procedures and thus, more attractive to the plant
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Parametric Optimization in Rougher Flotation Performance
2020.7.26 The dominant challenge of current copper beneficiation plants is the low recoverability of oxide copper-bearing minerals associated with sulfide type ones. Furthermore, applying commonly used conventional methodologies does not allow the interactional effects of critical parameters in the flotation processes to be investigated,
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Copper Flotation - 911 Metallurgist
2016.5.16 A Copper Flotation Flowsheet. 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 or more
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Lime use and functionality in sulphide mineral flotation: A
2019.9.6 Lime is the most commonly employed alkali in mineral ... a pyrrhotite-rich type copper sulfide ore. Flotation results confirmed that pulp aeration was able to selectively depress pyrrhotite and ...
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Behavior of talc and mica in copper ore flotation
2018.8.1 In this study the flotation of a copper ore in the presence of talc and muscovite was studied. It was found that talc can affect copper flotation mainly via froth phase. The copper grade and recovery were affected in the presence of only 7% talc. On the other hand, muscovite influenced the pulp phase via affecting the pulp rheology.
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A Review of Recent Advances in Depression
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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Flotation Reagent - an overview ScienceDirect Topics
For example, lime is added in flotation of molybdenite–copper ore to maintain an alkaline pH for pyrite depression, which causes the release of calcium ions into solution (Raghavan and Hsu, 1984). Water for reverse flotation of iron ore contains a significant concentration of amine flotation reagents used to remove silica particles ...
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Maximise pyrite depression in copper ore flotation using
2023.5.1 The flotation results obtained in high salinity water at pH 8.0 after grinding with forged steel and Hi-Cr steel media as reported in the previous work (Mu and Peng, 2021) are also shown in Fig. 1.When forged steel was used as grinding media, 78.0% chalcopyrite recovery and 39.9% pyrite recovery with a low Cu grade of 4.3% were
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CHAPTER-9 FROTH FLOTATION AND ITS APPLICATION
2020.5.6 For effective flotation, generally three types of flotation reagents are used. They are collectors, frothers, and modifiers. Table 1 lists flotation reagents commonly used in iron ore processing. In addition to surfactants, a number of inorganic compounds are included. These are either used as pH regulators (lime, soda ash, sulphuric acid,
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Flotation - an overview ScienceDirect Topics
The electrolytic flotation has mainly been used for small plants with capacity between 20 and 30 m 3 h −1. In dissolved air flotation, the bubbles are produced by controlling the pressure of water saturated with air. Three main processes of dissolved air flotation include vacuum flotation, microflotation, and pressurized flotation.
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A new perspective on copper oxide flotation: Synthesis and
2023.9.1 Overall, BEHA is a promising flotation reagent for the enrichment of oxidized copper ore in sulfide-free flotation. Following a series of surface detection techniques, it was suggested that the reason BEHA can be used for the sulfide-free flotation of malachite due to the stable chemical adsorption of the reagents on the mineral surface, and ...
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Handbook of Flotation Reagents ScienceDirect
The flotation behavior of the individual minerals is different from that of either lead–zinc or copper–zinc ore and therefore the treatment process is tailored based on the processing characteristics of the individual ore types. The sequential copper–lead–zinc flotation practice utilizes several major reagent combinations in sequential ...
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Assessing the depression of high-concentration pyrite in copper ...
2024.4.1 Fig. 2 shows that as pH increased from 9.0 to 10.5 and then to 11.5, the pyrite recovery obtained from the flotation of the ore with 5 % pyrite decreased steadily from 94.5 to 40.6 % and then to 10.3 %. Hence, a direct link between the decreased pyrite recovery in Fig. 2 and the increased Cu grade in Fig. 1 when pH increased could be
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Flotation - an overview ScienceDirect Topics
The electrolytic flotation has mainly been used for small plants with capacity between 20 and 30 m 3 h −1. In dissolved air flotation, the bubbles are produced by controlling the pressure of water saturated with air. Three main processes of dissolved air flotation include vacuum flotation, microflotation, and pressurized flotation.
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A new perspective on copper oxide flotation: Synthesis and
2023.9.1 Overall, BEHA is a promising flotation reagent for the enrichment of oxidized copper ore in sulfide-free flotation. Following a series of surface detection techniques, it was suggested that the reason BEHA can be used for the sulfide-free flotation of malachite due to the stable chemical adsorption of the reagents on the mineral surface, and ...
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Handbook of Flotation Reagents ScienceDirect
The flotation behavior of the individual minerals is different from that of either lead–zinc or copper–zinc ore and therefore the treatment process is tailored based on the processing characteristics of the individual ore types. The sequential copper–lead–zinc flotation practice utilizes several major reagent combinations in sequential ...
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The Life Cycle of Water Used in Flotation: a Review Mining ...
2018.9.27 Due to the limitation of freshwater sources and increasingly stringent disposal standards [13, 74, 79], the minerals industry has attempted to increase water use efficiency, reduce freshwater utilization, and minimize water discharge, or seek alternatives to fresh water [57, 59, 78, 84, 101].It is widely accepted that flotation is the most popular
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Conventional Flotation Methods of Copper Oxide Ore - Xinhai
2024.6.27 The following will introduce you to the commonly used flotation methods of oxidized copper in ore dressing plants: (1) Sulfide flotation: This is a relatively common and simple process. As long as the copper oxide ore can be sulfided, the sulfide flotation method can be used. The sulfided oxidized ore can be floated using xanthate.
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Assessing the depression of high-concentration pyrite in copper ...
2024.4.1 Fig. 2 shows that as pH increased from 9.0 to 10.5 and then to 11.5, the pyrite recovery obtained from the flotation of the ore with 5 % pyrite decreased steadily from 94.5 to 40.6 % and then to 10.3 %. Hence, a direct link between the decreased pyrite recovery in Fig. 2 and the increased Cu grade in Fig. 1 when pH increased could be
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What Reagents Are Commonly Used in Spodumene Flotation
2023.7.26 The spodumene flotation usually requires the use of flotation reagents to achieve the purpose of effectively separating spodumene from other minerals. The choice of flotation agents depends on the specific ore composition and processing conditions. Commonly used spodumene flotation reagents can be divided into collectors, frothers,
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Flotation of Gold and Gold-Bearing Ores - ScienceDirect
2016.1.1 The most widely used method of reversing the depressing effect of cyanide in the past has been to condition the flotation pulp at a pH value in the range 3.5–4 with sulfuric acid, or bubbling sulfur dioxide into the slurry, and then add copper sulfate to complex the cyanide and subsequently float the pyrite (Clay and Rabone, 1951, Malloy
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Challenges and opportunities in the recovery/rejection of
2015.7.1 Reverse talc flotation strategy of rejecting fluorine in copper–gold ore flotation at OK Tedi Copper/Gold Mine (reproduced from Lauder et al., 2003). 2.3.1.2. ... an important role in gold recovery, especially from ores containing a significant amount of pyrite. For instance, the use of lime as pH modifier (e.g., Ok Tedi and Freeport mines ...
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Effects of surfactants combination on iron ore flotation
2022.12.1 The physical characterization of the sample presented the values of the size distribution (Fig. 2) of the ore used in the flotation tests. The results show D 50 of 70 µm and approximately 85 % of the material below 150 µm, sizes suitable for the flotation process. Furthermore, one can observe that the material is practically free of slimes ...
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