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Measuring turbulence in a flotation cell using electrical resistance tomography Jun Meng, Weiguo Xie, Kym Runge et al.-Effects of seawater on the adsorption of xanthate onto galena and sphalerite Ningbo Song, Jin Yao and Wanzhong Yin-Improvement of ore recovery efficiency in a flotation column cell using ultra-sonic enhanced bubbles
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A combined process of flotation and high-gradient magnetic separation was proposed to utilize Yulong complex copper oxide ore. The effects of particle size, activators, Na2S dosage, LA (a mixture of ammonium sulfate and ethylenediamine) dosage, activating time, collectors, COC (a combination collector of modified hydroxyl oxime acid …
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Table 12.3 shows that the copper recovery in the concentrates is higher than that of the CNNC-39 flotation machine when the KYF-200 flotation ... i.e. asynchronous iso-flotation flow structure is used in the sulphide ore flotation, high selectivity collectors are applied for asynchronous iso-flotation of lead sulphide and iron …
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Blending of different ore types in the concentrator feed contributes significantly to maintaining a high recovery of valuable minerals with required grades in the concentrate. It is feasible to develop an ore-blending scheme over the life of a mine already in the design phase of the plant. In addition to ore characteristics, water quality …
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Hot sale flotation machine .This machine is used in copper,lead,zinc,nickel,molybdenum and so on non-ferrous metal,ferrous metal and non-ferrous metal mineral rough sizing,selection and counter-flotation process work.
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Request PDF | Flotation of copper sulphides assisted by high intensity conditioning (HIC) and concentrate recirculation | a b s t r a c t This paper describes the effect of the partial concentrate ...
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superconducting magnetic separator was performed to separate a Cu-Mo bulk flotation concentrate, and produced Cu concentrate assaying 19.64% Cu andL. 0.03% Mo from the bulk concentrate assaying 18.52% Cu and 0.39% Mo with a particle size of less than 0.074 mm. At a magnetic induction of 7 T,
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The flotation results obtained in high salinity water at pH 8.0 after grinding with forged steel and Hi-Cr steel media as reported in the previous work (Mu and Peng, 2021) are also shown in Fig. 1.When forged steel was used as grinding media, 78.0% chalcopyrite recovery and 39.9% pyrite recovery with a low Cu grade of 4.3% were …
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flotation concentrate would be preferred. Experiments were conducted to leach the concentrate that had the highest PGM recovery with sulphuric acid in order to target the base metals and further concentrate the PGMs in the residue. The base metal recovery from flotation concentrate using
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For oxide copper ore and some sulfide ores, a combined flotation–hydrometallurgy technology is applied to produce copper concentrate and …
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This size fraction is optimal for flotation process and very small amount of free galena and sphalerite particles is present. (George et al., 2004;Gontijo et al., 2007;Ata & Jameson, 2013 ...
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Considering all open-circuit flotation tests, at a feed grade of 3% TREO (Total Rare Earth Oxide), the best fit line indicated 80% recovery to a 45% TREO concentrate.
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The company seeks to maximize the law of copper concentrate and metallurgical recovery as an operation management strategy. Correlation is used to find the process variables that affect the grade copper and recovery. ... To model the copper ore flotation process, an analysis was made on the factors that affect the results of the …
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Flotation of grinding products with 55, 60, 65, 70, and 75% of grain size <74 μm, was conducted at the pulp's pH values of 10 and 12. Higher copper recovery was obtained in concentrates at pH ...
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For copper sulfide, and oxide copper ore, our flotation machines assist in efficiently separating copper particles from impurities within liquid mixtures, which helps save time …
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A great amount of work has been published and further research is continuously being undertaken to improve recovery and grade of gold in copper flotation circuits (Agorhom, 2014, Allan and Woodcock, 2001).Furthermore, naturally occurring elements such as fluorine, uranium and arsenic often occur in copper ores as minor or …
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Ore with a grade higher than 0.25% Cu is fed to milling-flotation plant to produce copper concentrates, while the ore with grade lower than 0.25% Cu is sent to …
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This means that 95.7% of the copper present in the ore was recovered in the concentrate, while the rest was lost in the tailings. (c) The % Cu Loss can be calculated …
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Copper-oxide raw ore has a high oxidation rate, and the proportion of refractory combined copper-oxide ore is high, which makes copper extraction difficult. ... The copper grades of flotation concentrates and tailings were 29.37% and 1.04%, and the recovery rates were 32.22% and 67.78%, respectively. ... the magnetic …
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Hydroxamic collectors are considered as promising collectors of sulfide and mixed ores of non-ferrous metals, both independently and jointly with xanthate [14–16].The efficiency of using hydrazides of 2-ethylhexanoic and n-pentanoic acids for flotation of copper-nickel ores is shown [17, 18].It is assumed that the presence of hydrazides of …
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This study was carried out to develop a flotation procedure for an oxide copper ore from a Region in Central Africa for producing an 18% copper concentrate for downstream processing at maximum ...
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The use of flotation machines with a chamber volume of 630 m 3 at a rougher flotation stage improved recovery by more than 3% at the Buenavista del Cobre (BVC) plant in Northern Mexico and increased the copper content in concentrate by 24%. In flotation machines with the Outotec FloatForce mixing mechanism (Finland), the …
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For flotation conditions similar to those for the ore, an addition of 150 g/t of the reagent lowered the recovery of pentlandite by about 5 m 4 U) O 3 2 m Iron Mill - KeX pH Air A65 ._1 Ltl 0 Z I-- Z W 0 OC W O.,f / 1 - / / - / / I 00 2 I I NICKEL ORE I I I I I I I 4 6 8 10 PERCENT WATER RECOVERY Fig. 7.
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trates without blending with high-grade sulfide concentrates, poor recovery of cobalt to matte during smelting and convert-ing and the high capital cost associated with concentrate smelt-ing and matte converting. The direct hydrometallurgical processing of nickel sulfide flotation concentrates can address many of the shortcomings of
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The microstructure of slags was studied through a scanning electron microscope (SEM) equipped with an energy dispersive spectrometer (EDS), and the results are shown in Fig. 2.As is shown in Fig. 2 (a), five different particles can be observed. According to the EDS in Fig. 2 (b) and (c), the valuable sulfide predominantly comprises …
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To obtain a copper concentrate containing less than 2% arsenic, it requires a sodium sulfite dosage of about 500 g/t or a S-7261A dosage of 70 g/t, the latter being about 15% of the former. It is also found that with sodium sulfite as the depressant, the copper recovery is reduced to about 75%, while with S-7261A, the copper recovery is …
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Asghari et al. investigated the improvement of copper recovery in an industrial flotation circuit (Sarcheshmeh copper mine), and stated that about 95% of overall copper lost in final tailing was in the rougher circuit while the rougher flotation recovery of mixed copper ore was 8% less than the sulfide ore. Additionally, the …
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Copper oxide ore has a complex composition, and a low recovery rate is often achieved via the traditional sorting method. A new combined process of flotation–high-gradient magnetic separation–leaching is proposed here to recover copper minerals. The test results showed that the flotation process was successful when using …
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A new hybrid froth flotation machine recovers particles with a wide size range. • Coarse particles are recovered in a fluidized bed. • Fines and ultra-fines are …
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The flotation test results of actual copper sulfide ore showed that pre-magnetized butyl xanthate could increase the copper recovery of copper concentrate by 3.06 percentage points and the sulfur recovery of sulfur concentrate by nearly 3 percentage points, and effectively reduce the mutual content of copper and sulfur …
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