pyrite flotation circuithydrometallurgy of copper pdf

Pyrite Flotation Circuithydrometallurgy Of Copper Pdf

pyrite flotation: magma copper company's superior facility,a description of the technical aspects of the pyrite flotation operation is provided below. 2.2 pyrite flotation and drying the pyrite flotation operation at superior uses pre-existing equipment. the system manipulates the ph of a normal copper flotation operation in order to float pyrite….

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Research of Laws Pyrite-Bearing Slag Flotation of Copper

Research Of Laws Pyrite-Bearing Slag Flotation Of Copper

pyrite copper and copper-zinc ores. flotation technology is a universal method of enrichment of natural raw materials (minerals) and man-made (mining and metallurgical waste) origin. it contains non-ferrous metals, and allows you to extract copper from free-milling crystallized copper slag aggregates [1, 2]. flotation copper ground to 0.074 mm,a study on the effect of active pyrite on flotation of,abstract: active pyrite is one of the most undesirable phenomena in the flotation of porphyry copper ores. misreported pyrite into copper concentrates decreased the grade and recovery of copper. in this study, the effective parameters on the flotation process including grinding condition and chemical parameters were evaluated in order to



bulk flotation of complex copper ore from siocon, zamboanga del norte _____ an undergraduate thesis presented to the faculty of the metallurgical engineering department college of engineering msu- iligan institute of technology iligan city _____ in partial fulfillment of the requirements for the degree of bachelor of science in metallurgical engineering khmer lee p. lugod may 2010 ii,separation efficiency improvement of a low grade copper,configuration is sequential flotation, where copper bearing minerals are recovered to a saleable copper concentrate, followed by re-activation and flotation of the pyrite which is leached with cyanide to recover gold. both trains produce a copper concentrate with significant quantities of

(PDF) Chalcopyrite and Pyrite Floatabilities in the

(PDF) Chalcopyrite And Pyrite Floatabilities In The

it was found that they depressed both the un-activated pyrite (at ph 5) and copper-activated pyrite (at ph 9). in the case of flotation of un-activated pyrite, the pyrite recovery decreased from 81.4% in the absence of dp-1775 to 39.8% and 21.0% in the presence of 300 g/t and 500 g/t dp-1775, respectively.,study of flotation parameters for copper recovery from,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.



in the xanthate – copper system cuprous xanthate is formed by the following reaction 2+cu + 2x- cux + ½ x 2. lecture 5 flotation 5 stability constants for the system are: flotation of pyrite is possible below ph 11 with short chain xanthates, but is depressed above about ph 11 depression of pyrite 1.,recovery of pyrite from copper tailings by flotation,the pyrite grade in the fresh tailing sample and in the flotation product was determined indirectly from the content sulfur, copper and iron. calculations carried out considering the elemental chemical composition presented in table 1 and the mineralogical species that contained sulfur, identified by the xrd analysis, allowed to determine that the fresh tailings sample contained 4.56% fes 2

Optimization of a Copper/Molybdenum Flotation Circuit by

Optimization Of A Copper/Molybdenum Flotation Circuit By

optimization of a copper/molybdenum flotation circuit by depressing pyrite from the rougher flotation stage using different scheme of reagents a thesis submitted in partial fulfillment of the requirements for the degree of master of science in metallurgical engineering by wander a. valderrama dr. carl c. nesbitt/thesis advisor may 2020,effect of particle size and liberation on flotation of …,flotation of copper minerals from pyrite and gangue. in the rougher flotation stage three parallel lines of denver dr 500 flotation cells were installed, and each row consists of 21 cells in order 5+4+4+4+4. the rougher flotation stage gives three products: bulk copper and pyrite concentrate and final tailings. the selective flotation of copper



figure 2.27 effect of copper sulphate on recovery of pyrite 43 figure 2.28 effect of copper sulphate on pyrite flotation 43 figure 2.29 effect of copper sulphate on gangue recovery 44 figure 2.30 a pourbaix diagram for the fe-s-cn-h2o system 47 figure 2.31 copper (ii) speciation at different ph values. 47,[pdf] the effect of sulphite on the xanthate-induced,the effect of sulphite ions on the xanthate-induced flotation of copper-activated pyrite has been studied. various techniques have been used to identify the plausible mechanisms of interaction of sulphite with both collector and pyrite surface. it was f ound that sulphite depressed the xanthateinduced flotation of copper-activated pyrite with nitrogen or air purging at ph 7.

An Electrochemical Study of Surface Oxidation and

An Electrochemical Study Of Surface Oxidation And

the influence of pyrite oxidation on flotation of other valuable sulfide minerals is an important topic for the mineral industry and has attracted many studies [34-37]. owusu et al. [4] recently investigated the effect of pyrite on flotation of chalcopyrite and reported pyrite can be activated by,pyrite depressant on copper ore - froth flotation,flotation of copper at different alkaline ph from 7 up to 10 and using different xanthates as collector vs recovery of copper may give some clue. minimum pyrite obtained in copper concentrate is the starting point for further flotation testwork. depressing pyrite is always a tricky matter. the non- float is naturally your pyrite concentrate

Developing a Bulk Circuit Suitable for Chalcopyrite Pyrite

Developing A Bulk Circuit Suitable For Chalcopyrite Pyrite

a simpler flotation circuit with lower operating and capital costs for treatment of such copper-gold-pyrite ores with an elevated pyrite head assay was sought in this work. after characterizing the ore, the objective was to apply bulk rougher flotation of both the copper minerals and pyrite for the copper-gold-pyrite ore at natural ph.,thermomechanical aspect of selective flotation of,ration of copper and zinc minerals from pyrite [2]. however, with selective reagents in copper flotation, amount of sphaler-ite and fine-ground pyrite grows in the zinc flotation cycle, which mutilates flotation process. it is known that zinc cycle of copper–zinc ore flotation uses xanthate modifications that are not selective relative to pyrite.

The Effect of Regrinding Chemistry and Particle Breakage

The Effect Of Regrinding Chemistry And Particle Breakage

2. separation of different copper sulphide minerals from pyrite after regrinding; 3. importance of pulp chemistry during regrinding rougher concentrates; 4. effect of particle breakage mechanisms on subsequent flotation. in this study, it was found that copper activation of pyrite and its flotation in the cleaner stage were affected by regrinding.,de-zincing of lead-copper sulphide minerals flotation,typical lead-copper-zinc sulphide minerals were found hard to be separated selectively by froth flotation in the plant practice operation due to part of sphalerite was progressively entrapped into lead-copper bulk flotation. a series of de-zincing on lead-copper flotation tests has been conducted in the laboratory to reduce unwanted zinc content.

Hydrometallurgical Production of Copper From Flotation

Hydrometallurgical Production Of Copper From Flotation

hydrometallurgical production of copper from flotation concentrates by j. r. cobble,1 c. e. jordan,2 and d. a. rice3 major constituent, with minor amounts of pyrite and trace amounts of quartz, plagioclase, and microcline feldspars.,depression of pyrite in porphyry copper flotation,pyrite +sims average with 95% confidence, n=30 sample 1 - rghr con sample 2 - cell 10 con 0.4 0.5 0.6 normalised counts pyrite -sims average with 95% confidence, n=30 sample 1 - rghr con sample 2 - cell 10 con pyrite in the concentrate is cu activated • copper and collector detected on the surface of pyrite

Pyrite Leaching Behaviour under CESL Process Conditions

Pyrite Leaching Behaviour Under CESL Process Conditions

pyrite from copper concentrate in the upstream flotation step. however, this may not be practical due to mineralogical characteristics of the ore or it may be discouraged because of appreciable precious metals locked in the pyrite lattice. experimental the objective of the present work was to characterize and quantify the stoichiometry of,dithiocarbonate and trithiocarbonate interactions with,4.1.1 pyrite 34 4.1.2 copper 42 4.2 raman spectroscopy 47 4.2.1 pyrite 47 4.2.2 copper 53 4.3 electrochemical impedance spectroscopy (eis) 63 4.3.1 pyrite 66 4.3.2 copper 76 4.4 decomposition of ttc in solution 86 4.5 microflotation of pyrite 93 5. proposed mechanism 96 6. conclusions 98 7. recommendations 99 8. references 100

For personal use only -

For Personal Use Only -

from this analysis a simple flotation circuit was then derived whereby the copper mineral is first removed by flotation and subject to a light re-grind, principally to clean the particle surfaces, but also to improve the separation of copper and cobaltic-pyrite particles, followed by a copper cleaning flotation, where the,effect of ph on the recovery and grade of base metal,to flotation to precipitate heavy metal ions from solution. in this sense the alkali is acting as “deactivator” as these heavy metal ions can activate sphalerite and pyrite and prevent their selective flotation from lead or copper minerals. since the heavy metal precipitated by the alkali can dissociate to a

Effect of sodium hexametaphosphate on separation of

Effect Of Sodium Hexametaphosphate On Separation Of

flotation separation of serpentine from pyrite was studied through flotation tests and sedimentation tests. according to fig.1 and 2, serpentine has a great impact on the flotation of pyrite, and the more the amount of serpentine, the greater the impact is. when there is only 5% of additive serpentine in the mixed mineral of serpentine,hsc sim® simulation model of the assarel copper flotation,selective flotation feed is lower and they are more intimately intergrown with sulfide minerals. however, after regrinding 95% of pyrite is liberated, whereas only 68% of copper minerals in selective flotation feed shows full liberation. due to low au grade and limited number



3.4 depression of pyrite in the flotation of copper ores 21 3.4.1 misreporting of iron sulphide minerals to copper concentrate 21 3.4.2 methods to reduce iron sulphide mineral recovery 22 4 flotation dynamics and controlling 24 4.1 mechanical flotation cell 24 4.2 characterizing a flotation cell 25 4.2.1 mixing zone 26 4.2.2 quiescent zone 28,xanthates.pdf - xanthates xanthate as the flotation,in flotation of pyrite with xanthate, butyl xanthate is usually used. generally, after the activator (copper sulfate) is added to the pulp, the mixed emulsifier of xanthate, pine oil and water can be added at one time, which is better than the multiple addition of the flotation reagent, and the dosage of the flotation reagent will be saved. pyrite can use xanthate as the collector in acidic

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