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Control parameters of flotation process in the plant for naturally or weakly floatable sulphide minerals iii in order to enhance the selectivity of collection ma ny modifying agents like .
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According to eliseev (2012) and gardner & woods (1979 international journal of mineral process ing 6(3 the effect of ph on sulphide flotation examined paying particular attention to the
Tecflote is a new group of nitrile-based collectors for sulphide flotation the fact that it is insoluble in water results in some interesting implications for its actual working mechanism
Jan 01 2012 vania-mori et al (2009) studied the advantages of copper sulphide ctab (cetyl-three-ethyl ammonium bromide) on the electro-leaching of copper sulfide (chalcopyrite) flotation concentrate the result of the electro-leaching process shared that extraction of copper in the presence of surfactant cation ctab had an increased extraction compared to
Abstract: froth flotation is widely used for concentration of base metal sulphide minerals in complex ores one of the major challenges faced by flotation of these ores is selection of the type of flotation reagents in this study the d-optimal experimental design method was applied to determine the optimum
Dec 10 2016 1 introduction the use of nahso 3 as a flotation depressant (forssberg et al 1993 g l 2007) is being practiced in selective flotation of sulphide mineralsthe depressing effect of sodium bisulphite generally increases from copper sulphides to galena pyrite and sphalerite (peres 1981)however there is no common agreement about the depression mechanisms
Tritton project - nord pacific - nsw - australia - review of feasibility study supervision of additional testwork preparation of design criteria & review of tenders for flotation operation (2000) puthep project - thailand - pan australian resources - initial project development input for copper oxidesulphide heap leachingsxew project (1999)
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
Indonesian mining journal vol 14 no 1 february 2011 : 43 - 53 are 596% pb; 153% cu and 987% zn this typi-cal ore is considered as high-grade lead-zinc com-plex sulphide ore flotation test result with condition similar to plant practice the flotation test was performed by rougher flota-tion of lead-copper minerals (rougher pbcu) with
Jan 31 2019 21 effect of collector concentration on flotation recovery xanthates are the salts of xanthic acid (alkylaryl dithiocarbonic acid) and are formed through the replacement of two oxygen atoms in carbonic acid by sulfur and replacement of one hydrogen atom by an alkylaryl group 22 they are commonly used as a standard collector for sulfide minerals and their collecting power varies with c
It is illustrated using test data on liquid-phase pb(no3)2 and rocssk reactions that dixanthogen originates in the solution and the origination mechanism is suggested the said reaction can happen at galena surface in the course of galena oxidation in flotation
The kansanshi mixed copper sulfide-oxide ore contains significant proportions of fine material manifesting in a variety of processing challenges this paper presents the work which was carried out to evaluate the efficacy of desliming in improving the flotation response of the ore two modes of desliming were investigated namely; sieving and elutriation after which the deslimed material was
This study investigated the effects of flotation parameters on the recovery of low grade nickel sulphide ore the parameters investigated are the particle size flotation time temperature and ph of the pulp the analyses of the results obtained showed that particle size ph and flotation time had significant effects on the recovery of nickel sulphide ore
Control of ph is one of the most widely applied methods for the modulation of mineral flotation in this study the effect of ph on potential in solution and sulphur minerals flotation is discussed with various electrodes the electrodes were platinum gold chalcopyrite pyrite and galena in solution potentials were linearly dependent on ph with a different slope for each electrode
Jul 08 2010 the flotation process in seawater is highly complex and multifaceted wherein the chemistry is very different to that of pure water the high saline environment compresses the electrical double layers resulting in (i) enhancement of the floatability for surfaces that are already hydrophobic; (ii) mitigation of the slime coatings; (iii) increase of the entrainment; (iv) reduction of the bubbles
Table 1 the chemical analysis of ore sample elements amount % mgo 195 al 2 o 3 676 sio 2 334 k 2 o 218 cao 200 fe 2 o 3 101 cuo 036
Bioleaching is an environment-friendly and low-investment process for the extraction of metals from flotation concentrate surfactants such as collectors and frothers are widely used in the flotation process these chemical reagents may have inhibitory effects on the activity of microorganisms through a bioleaching process; however there is no report indicating influences of reagents on the
The estimation of metallurgical parameters of flotation process from froth visual features is the ultimate goal of a machine vision based control system in this study a batch flotation system was operated under different process conditions and metallurgical parameters and froth image data were determined simultaneously algorithms have been developed for measuring textural and physical froth
Jan 01 2017 flotation process is widely used to separate these minerals in sulfide ores 1 a wide range of chemical reagents are used in the flotation process to separate the different minerals most of these reagents such as cyanides are toxic in nature and
Removal of bitumen from mature oil sands tailings slurries by electro-flotation journal of water process engineering 2017 15 116-123 doi: 101016jjwpe201610002 influence of flotation cell volume and solids mass on kinetics of sulfide ore flotation e3s web of froth processes and the design of column flotation cells 2000
Jun 12 2017 the effect of water quality on the flotation of a complex polymetallic sulphide ore was studied using a doehlert-based experimental design flotation tests were carried out using a sulphide ore provided by the guemassa-marrakech mining company morocco (mcg) using simulated tailings dam water the optimal results with a galena recovery of 86% and selectivity relative to chalcopyrite
Purchase fluid inclusion effect in flotation of sulfide minerals - 1st edition print book & e-book isbn 9780128198452 9780128198469
Jan 02 2012 with the depleting reserves of high-grade iron ore in the world froth flotation has become increasingly important to process intermediate- and low-grade iron ore in an attempt to meet the rapidly growing demand on the international market in over half a centurys practice in the iron ore industry froth flotation has been established as an efficient method to remove impurities from iron ore
Flotation was the process that transformed the non-ferrous mining industry and the industries and economies of the world it was an improbable process; nobody could have imagined 100 years ago that floating high specific gravity particles on water would be the
The mining operation from which the samples originate does not currently process sulphide ore and thus a basic flotation procedure was designed to evaluate the flotation performance an overview of the timings used in the flotation procedure can be found in table 1 for the collector a dosage of 30 gt at a concentration of 1% was used and a
The interaction of om with sulphide minerals and its effects on their flotation are little understood 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 and pulp conditions in the flotation cell 9101112
Dissolved air (pressure) flotation-daf is a well-established separation process that employs micro-bubbles as a carrier phase this work shows results concerning bubble generation at low working pressures in modified daf-units to improve the collection of fragile coagula by bubbles daf of fe (oh)3 (as model) was studied as a function of saturation pressure in the absence and presence of
Journal mineral processing and extractive metallurgy a regrinding and floc-flotation process was studied for the treatment of fresnillo silver sulphide scavenger concentrate to increase the silver grade and recovery of the final concentrate in the flotation circuit it has also been found that dispersion can improve the flotation of
Water chemistry is one of the most important parameters affecting flotation performance various types of ions can dissolve and accumulate in process water depending on ore mineralogy reagent scheme grinding medium and chemistry of mine site water sulfur-based ions (sulfate thiosulfate polythionate) are generally observed in flotation of sulfide ores
Mg aylmore in gold ore processing (second edition) 2016 511 platsol process the platsol process was originally developed in collaboration with the university of british columbia kane consultants ltd and lakefield research in canada for the treatment of flotation sulfide concentrate for polymet mining company in minnesota and was tested on similar types of concentrate materials
Review: adsorption of ions and molecules to solid surfaces in connection with flotation of sulphide minerals journal of coordination chemistry 1994 32 (4) 261-342
The depression of talc at a fixed room temperature about 25 c through micro flotation and batch flotation experiments zeta potential and contact angle measurements as well as infrared spectroscopy analysis the flotation results displayed that the sag had a significant influence on the flotation of talc but less inf luence on sulphide flotation
Sep 27 2018 b ak ekmek i z can m zt rk y (2012) the effect of water chemistry on froth stability and surface chemistry of the flotation of a cuzn sulfide ore int j miner process