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This masters dissertation an column flotation is to determine the effects of physical and chemical parameters on the column flotation cell performance in the flotation of pyrite Hypotheses are also proposed to explain observed changes Chapter one gives a brief description of flotation columns some applications of flotation columns and a
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The flotation chemistry between pyrite and isomeric xanthates (butyl xanthate and isobutyl xanthate) was investigated by means of adsorption experiments surface tension tests and molecular dynamic simulations in this work The flotation chemical results were confirmed and further interpreted by quantum chemical calculations The experiment results demonstrated
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Pyrite is also an undesired inorganic constituent present in coal Flotation techniques have been developed to separate pyrite from the other valuable minerals 3 The pyrite surface has also been suggested to play a central hole in the origin of life acting as a catalyst in the formation of prebiotic molecules 4 5
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Thereafter SEM-EDS analysis was done to characterize each flotation stream regarding its modal mineralogy liberation degree and particle size Geochemical tests (static and kinetic tests) were performed in the pre-floated samples and tailings after pyrite flotation The results showed that the reactivity of the tailings is highly dependent on
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flotation rate constant responds to second-order kinetics model with correlation coefficient of 0 99 At the end of the multi stage flotation test performed under the optimum flotation parameters Mo recovery and content for final concentrate were
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grained pyrite performs interstitial 100-500 microns by size [16] Intergrowth of pyrite sphalerite tennantite and other copper sulphides difference in their activity and size create the considerable problems in implementation of selective flotation obtaining conditional copper and zinc concentrates
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The flotation properties of pyrite were found to be significantly influenced by va~iations in the pH In acidic solutions the pyrite floatability is very high and recoveries of 95% could be achieved using only a frother A sharp decrease in floatability was observed in alkaline solutions possibly due to the formation of hydrophilic ferric hydroxide The addition of a xanthate collector
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all copper bearing minerals and majority of pyrite is collected and forwarded to a cleaner circuit The combined concentrate flows to a conditioning tank where lime is added for pyrite depression at pH 12 After the conditioner the concentrate is transported to four Denver-500-4 cells which constitute Cu-rougher flotation The rougher
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Pyrite is a gangue mineral commonly associated with valuable sulphide minerals such as chalcopyrite chalcocite galena and sphalerite The separation of pyrite from these valuable sulphide minerals by flotation is difficult due to the activation of pyrite by lead and copper ions added intentionally or dissolved from minerals
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15 12 1992The pyrite rougher flotation tailings in this example were treated differently than as shown in FIG 1 Instead of floating a bulk sphalerite-arsenopyrite concentrate the arsenopyrite was depressed during sphalerite flotation using additions of base cyanide and xanthate collector and then subsequently activated with copper sulfate and collector and floated
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Depression of pyrite in porphyry copper flotation Depression of pyrite in porphyry copper flotation Sample 2 Cell 10 Con Pyrite in the concentrate is Cu activated Limited depression of pyrite with lime Flotation tests on plant rougher con 60 Cp 18 Py Ore 1 Pyrite is Cu and xanthateactivated 0 20 40 0 4 8 12 16 20
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The effects of temperature pH and duration of the biooxidation of old pyrite flotation tailings on the recovery of gold by carbon-in-pulp cyanidation were investigated The best technological parameters of the biooxidation step for recovery of gold from the leach residue were the temperature of 35C pH 1 2– 1 5 biooxidation for 12 days
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Copper flotation parameters of chalcocite ore chalcopyrite chalcocite copper extraction separation chalcopyrite chalcocite copper extraction separation home chalcopyrite flotation mining process and brass ore manufacturing ore get more info copper flotation parameters of chalcocite ore athirain
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with coal feeds obtained by either dry grinding or wet grinding 1-1 Therefore the effect of different grinding methods on the separation of coal from pyrite from other ash forming minerals is not clear from these studies Miller and Guzzo~ have compared the effect of dry and wet grinding methods for deep cleaning ultrafine coal by flotation
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Arsenopyrite enrichment by column flotation 1267 The parameters studied in particular were the effects of the column hydrodynamics (superficial pulp gas and wash water velocities) and of the physicochemical parameters - collector and frother type - in order
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of depressing pyrite after molybdenite separation The fast/slow-floating model was found to be appropriate for describing the flotation kinetics of the copper-molybdenum ores The parameters are useful for comparing the performance at different conditions *(96/4 flotation seawater modified Denver cell organic pyrite depressant
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