In this study mixed culture consisted of six iron and sulfur oxidizing microorganisms were used in leaching of flotation and acid leaching tailings obtained from Zambia sulfide ores The result showed that % and % copper were dissolved by bioleaching while % and % by acid leaching in flotation and acid leaching tailings
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Approximately 20 kg of flotation tailings were collected at several locations in the flotation tailings dump of the copper mine Majdanpek RTB Bor Serbia Particle size of the flotation tailings was determined as 37 µm by sieving Leaching experiments were performed by application of sulphuric acid MOSS HEMOSS Serbia and sulphuric acid
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Copper ore mining and processing release hazardous post flotation wastes that are difficult for remediation The studied tailings were extremely rich in Cu 1800 mg kg −1 and contaminated with Co and Mn and contained very little available forms of P Fe and plants growing in tailings were distinctly enriched in Cu Cd Co Ni and Pb and the concentration of copper achived the
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this paper presents a review of chemical composition data of the main stages of copper production from sulfide minerals such as 1 copper minerals 2 flotation tailings 3 flotation concentrates 4 slags and 5 flue dust from the smelting/converting stage 6 copper anodes 7 anode slimes 8 contaminated electrolytes from the …
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flotation tailings were taken from the Old Flotation Tailing Dump of the Mining and Smelting Complex Bor in Eastern Serbia Experimental testing was carried out in order to increase the leaching degree of copper with addition of oxidants during leaching Using the Fe 2 SO 4 3 as an oxidant the achieved copper leaching degree was %
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Hence the best estimate of the total copper content in the old flotation tailings of the Copper Mine Bor ranges between 54000 and 81000 t Previous detailed analyses of the mineral and chemical composition of samples of the old flotation tailings5 6 showed that the copper content in the dump could reach %
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The mineral composition of copper cobalt ores is more complex than that of copper sulfides and it is also difficult to discard tailing efficiently DOAJ is a community curated online directory that indexes and provides access to high quality open access peer reviewed journals
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The mineral composition of the slag tailings was dominated by maghemite Fe 3 O 4 and fayalite Fe 2 SiO 4 and the arsenic bearing minerals were unevenly distributed where As Ⅴ fine particles were embedded in maghemite amorphous phase and fayalite There was a large amount of residual arsenic in the slag tailing particles and the
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Comparing the flotation tailings with the waste copper residue copper with a grade of % in tailings is of difficulty to recover through flotation further demonstrating the necessity of leaching tests for the tailings 1 Results of typical chemical composition analysis of the flotation tailings Component % Cu CaO MgO Fe 7
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the tailing with a grade of % Mineralogical studies indicate that sphalerite exist in free grains enclosed into pyrite and in some cases pyrite is in sphalerite matrix [2] Flotation process was applied to produce a sphalerite concentrate from tailings The tailings were conditioned in a pulp with a pH of 600g/t CuSO 4 400g/t FeSO 4
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Tailings consist of ground rock and process effluents that are generated in a mine processing plant Mechanical and chemical processes are used to extract the desired product from the run of the mine ore and produce a waste stream known as tailings
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The chemical composition of the selected streams as determined by the SEM EDS is given in Table 1 The concentrations of iron 56 % and silicon 11 % inside the autogeneous mill hydrocyclone down to % in the rougher and final flotation tailings The copper concentration in the hydrocyclone underflow from the ball mill is about 10 %
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The content of residual S in the copper slag was determined by the combustion neutralization method [] and the sulfur release rate n was calculated as the following formula where M 1 and M 2 are the masses of samples before and after roasting respectively g and S 1 is the initial sulfur content of the copper tailings while S 2 represents the residual sulfur content of the roasted slag %
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Collection of the froth from the surface of the flotation cell yields a copper concentrate To increase the recovery of copper and reduce losses the tailings are frequently reground and passed through a second flotation the concentrate from which is combined with the initial production The flotation concentrate is then dewatered and filtered
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Figures 9 and and10 10 show clearly that there was a marked increase in the overall recovery of copper after the tailings of the 1 st stage flotation were milled to 90% passing 45 microns and floated In the case of conventer and mixed slag increases of over 10% in the recovery were recorded when both FC4146 and FC7245 were used as secondary
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Mihajlović The effect of cooling rate of slag from primary copper production … 129 In Table 1 an overview is given of copper content in flotation tailings in smelters which process slag by flotation Table 1 Copper content in flotation tailings in different smelters Smelter %Cu Almalykskii Russia 0 27 Garfield USA 0 48 Guixi China 0 50
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CMF tailings Selective flotation Washing Discharge Recleaner Mo flotation Re grinding Copper cycle Mo concentrate Pyrite cycle Cu concentrate Secondary tailings Size grades μm Distribution % Fig 3 Mineral composition of CMF tailings % Pyrite Chalcopyrite Molybdenite Secondary copper sulfides Nonmetals
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According to the results of studying the chemical composition of tailings it was found that the average copper content the main component of ores is % increasing in some samples to % There is a high content of zinc and lead gold silver and rare metals
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from the old flotation tailing dump in Bor were sieved and also separated in the same class 75 μm Chemical composition of tested samples is given in Table 1 Table 1 Chemical analysis of slag pyrite and tailings % mass Metal content in samples % Cu Fe Zn Slag Concentrate FeS 2 Flotation tailings 10
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Sep 30 2021The copper cobalt sulfide concentration was obtained at the following optimal conditions the grinding size of − mm 65% the aggregate s liberation degree of 67% a collector dosage of 50 g·t −1 a collector combination of 35% aerofloat 65% butyl xanthate a pH of and 2# oil a terpineol type foaming agent dosage of 60 g·t −1
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Tailings from an industrial copper slag cleaning milling and flotation circuit have been pre reduced at low temperatures well below its melting point using CH 4 H 2 Ar mixtures with the aim of metallizing its iron oxide component to metallic iron The treatment carried out at 700 900 °C with a duration of up to 90
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ores adhering the flotation tailings were obtained from Yulong Copper Mine in Changdu city of China The main element composition was % Cu % Fe and % S Preparation of mixed mesophilic acidophiles The enrichment of the mixed mesophilic acidophiles for subsequent column bioleaching is as described by our previous study [21]
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A novel soil column for repairing copper mine tailings and removing orthophosphate was the synergistic purification effect bet the raw ore is usually processed through crushing grinding and chemical flotation to separate the minerals in the raw ore However the majority of CTs are produced after ore dressing and
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Flotation tests to produce bulk concentrate of copper lead and lead zinc were unsatisfactory The recovery of the zinc with H2SO4 leaching were conducted both at room temperature and at elevated temperature The effects of various parameters such as leaching duration concentration of H2SO4 pulp density and temperature on
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The mineralogical composition of the tailings remaining after the flotation of lead and zinc sulphide ores originating from the two most characteristic areas of the Silesian Cracovian deposits Poland was estimated The main component of the tailings was dolomite containing non uniformly distributed isomorphic admixtures of Fe II and Mn II The tailings from the Boleslaw area differ from
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Raw Material Lead tailings Capacity 100TPH Country Kyrgyzstan Feeding size 1mm Raw mineral description Customers requirements extracting copper zinc and iron and increase the copper and zinc grade as much as possible
Get PriceFlotation behavior of copper and nickel from mine tailing was investigated under varying concentrations of PAX ranging from 0 g/t to 200 g/t when other flotation parameters were fixed at 200 g/t of MIBC concentration 50 g/t of pulp density slurry pH of 5400 rpm of stirring speed and 6 minutes flotation time
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The mass production of flotation tailings has become a serious risk to the environment Re concentration of tailings is one of the best ways to solve this problem which requires a better understanding of flotation tailings In the present work flotation kinetics timed release flotation X ray diffraction XRD Fourier transform infrared spectroscopy FTIR scanning electron microscopy
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The tailings go to scavenger flotation while the concentrate with a grade of more than 20% copper continues being processed The final concentrate is thickened and filtered before being stockpiled to be transported 380 km to the Salaverry port for shipment to copper smelters in Korea Japan and Germany
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% and the grade of copper improved to mass% from mass% under collector less opti mum flotation conditions The enrichment ratio of copper in the concentrate was 45 The copper concentrate obtained from flotation of the low grade copper ore was treated by atmospheric leaching and high pressure oxidative leaching processes
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