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(PDF) Effects of Sodium Alginate on the Flotation ...
Molybdenite flotation was assessed using a 150 mL Partridge and Smith glass cell with nitrogen gas at 80 mL/min. The experiments were done using 1 g of molybdenite, either pure or in mixtures . Minerals 2020, 10, 578 3 of 14 of 1 g molybdenite plus 0.18 g of kaolinite (15%), which was initially conditioned for 2 min in 100 mL
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Factors affecting the flotation recovery of molybdenite ...
In the single mineral flotation tests, HA has shown good depression ability to molybdenite over the entire pH range tested from pH 3-11, while the floatability of talc was only affected by HA ...
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Depressing effect of flocculants on molybdenite flotation ...
This dissertation presents the results of research on the flotation system potassium n-amyl xanthate - sodium sulfide - molybdenite. The purposes of the research were (1) to determine the theoretical collector-depressant equilibria conditions of this system necessary for the flotation or depression of molybdenite, (2) to ascertain the mechanism of adsorption or the collector potassium n-amyl ...
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Flotation of molybdenite in the presence of ...
The results of chalcopyrite and molybdenite flotation and OM adsorption (Figure 5 and XPS study) on these two minerals indicate that, first, OM adsorption is the cause of the depression of mineral flotation in agreement with similar observations that the adsorption of hydrophilic macromolecules such as humic acid, lignosulfonate, guar gum or ...
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US2664199A - Flotation recovery of molybdenite - Google ...
The flotation of molybdenite seemed to be less influenced by xanthate than by kerosene, while that of chalcopyrite showed the opposite. The optimum concentration of sodium sulfide for separation was 0.03 mol/L, which rejected 83% chalcopyrite and recovered 82% molybdenite in the single mineral flotation.
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(PDF) Selective flotation separation of molybdenite and ...
Apr 01, 2015· The quality of recycled process water is an important issue in the flotation of Cu–Mo ores. Processing of Cu–Mo ores includes two steps: a bulk flotation where molybdenite is recovered together with Cu sulfides, and a subsequent selective flotation step where molybdenite is separated from depressed copper sulfides.
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Mechanism study on flotation separation of molybdenite ...
The results of chalcopyrite and molybdenite flotation and OM adsorption (Figure 5 and XPS study) on these two minerals indicate that, first, OM adsorption is the cause of the depression of mineral flotation in agreement with similar observations that the adsorption of hydrophilic macromolecules such as humic acid, lignosulfonate, guar gum or ...
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Depressing effect of flocculants on molybdenite flotation
Mar 10, 2016· Particle size is a very important factor affecting flotation properties of molybdenite. In porphyry copper–molybdenite ores the flotation conditions (grinding, reagents, bubble size, etc.) all are optimized with respect to Cu and not Mo. Fig. 2 shows that the optimum flotation particle size for molybdenite is around 20 μm, and the size fraction 6.8 μm exhibits the lowest recovery and ...
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Flotation separation of molybdenite from chalcopyrite ...
aero 3894 promoter for copper molybdenum ores flotation aero 7261a depressant for copper zinc ores flotation aero aerophine promoter for chalcopyrite flotation copper and molybdenum flotation aerofloat 25 flotation reagent for copper molybdenum ores OPTIMIZATION OF FLOTATION PARAMETERS FOR BENEFICATION OF A Molybdenum Ore Processing by Flotation aero 3477 promoter for copper …
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Polymeric Depressants in Purification by Flotation of ...
Single mineral flotation of chalcopyrite, molybdenite and pyrite with a regular collector (potassium amyl xanthate) and a selective collector (N-isopropoxypropyl-N′-ethoxycarbonyl thiourea) for ...
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Copper–Molybdenum Sulphide Ore by Flotation
In the acidic region, zeta potentials are negative and small and the flotation recoveries are large. In the alkaline region, the zeta potentials are large and the flotation recoveries are low. It was suggested that this change could be due to the following reaction occurring at the edges of molybdenite layers: HMoO4- ↔ H+ + MoO4 = pK = 5.95
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(PDF) Selective flotation of chalcopyrite from pyrite ...
Molybdenite flotation was assessed using a 150 mL Partridge and Smith glass cell with nitrogen gas at 80 mL/min. The experiments were done using 1 g of molybdenite, either pure or in mixtures . Minerals 2020, 10, 578 3 of 14 of 1 g molybdenite plus 0.18 g of kaolinite (15%), which was initially conditioned for 2 min in 100 mL
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Molybdenite Flotation Operating Variables
Jun 01, 2020· For single mineral flotation test, 2 g of chalcopyrite or molybdenite samples were dispersed by ultrasonic cleaner for 3 min, then the suspension was transferred in to 60 ml flotation cell and the suspension was mixed for 2 min, followed by the sequential addition of a desired amount of sodium thiosulfate (Na 2 S 2 O 3) and cupric (Cu 2+) with ...
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Minerals | Free Full-Text | Study of the Effect of Sodium ...
an off grade or low grade molybdenite ore material containing insoluble non-sulfide gangue as well as other impurities is treated by a combination of chemical and flotation steps to produce a molybdenite concentrate of commercially acceptable grade. the ore material, usually a molybdenite flotation concentrate, is subjected to roasting in the presence of concentrated sulfuric acid and is ...
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Review of the flotation of molybdenite. Part I: Surface ...
The quality of recycled process water is an important issue in the flotation of Cu–Mo ores. Processing of Cu–Mo ores includes two steps: a bulk flotation where molybdenite is recovered together with Cu sulfides, and a subsequent selective flotation
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POTENTIAL CONTROLLED FLOTATION OF SARCHESHMEH MOLYBDENITE*
Typically, rougher molybdenite flotation and recovery from bulk copper/molybdenum concentrates involves the use of alkalisulfides, Nokes reagents, cyanides, oxidants, and/or thermal treatment to depress copper sulfide minerals. The bulk copper/molybdenum feed generally varies from 0.2% Mo to 1.0% Mo, and with traditional reagents the single-stage rougher flotation recovery of molybdenite ...
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Evaluation of collectors for molybdenite flotation ...
Nov 01, 1990· Typically, rougher molybdenite flotation and recovery from bulk copper/molybdenum concentrates involves the use of alkalisulfides, Nokes reagents, cyanides, oxidants, and/or thermal treatment to depress copper sulfide minerals. The bulk copper/molybdenum feed generally varies from 0.2% Mo to 1.0% Mo, and with traditional reagents the single-stage rougher flotation recovery of molybdenite ...
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(PDF) Selective separation of copper-molybdenum sulfides ...
Factors Directly Affecting Molybdenite Flotation: The average molybdenite recovery in the copper concentrator for the first nine months of 1980 was 67.13%.In recent months, there has been approximately an 80% recovery of the molybdenite in the sand and slime rougher floats.
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The Depressing Effect of Kaolinite on Molybdenite ...
In this work, the flotation behavior of molybdenite in Pb2+ solution with or without Na2S was investigated. The mechanism was also studied by Zeta potential …
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Aero 6494 Promoters For Copper-Molybdenum Ores Flotation
The depression of molybdenite flotation in seawater at pH > 9 was previously explained by the attachment of the positively charged hydroxo complexes of magnesium to the molybdenite faces, which occurs most probably on the nano-edges of these basal planes .
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(PDF) EFFECT of Pb2+ on the flotation of molybdenite in ...
The flotation response of chalcopyrite and molybdenite in the presence of copper ions was investigated through single mineral flotation tests and flotation separation tests.
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Flotation of molybdenite - United States Borax & Chemical ...
molybdenite flotation copper iron Prior art date 1952-08-27 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US306638A Inventor Lyle M Barker Orel E Young
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Depressing effect of flocculants on molybdenite flotation
To date, many approaches have been developed to realize the separation of chalcopyrite and molybdenite in the flotation process. The most wildly-used …
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"Collector-depressant equilibria in the flotation of ...
for molybdenite flotation. This study is a preliminary investigation which used only pure molybdenite mineral as model systems to optimize the flotation using micro-emulsified collector. Material and methods Materials Molybdenite sample used in this work was obtained from Jinxin Mines Ltd. (Chifeng,
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