The critical importance of pulp concentration on the flotation of galena from a low grade lead–zinc ore

X, Luo; Feng, Bo; Wong, Cunjian; Miao, Jiancheng; Ma, Bin; Zhou, Hepeng

doi:10.1016/j.jmrt.2015.10.002

Cited by 33 publications

(13 citation statements)

References 11 publications

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“…The solids in pulp is the most important parameter that will influence the flotation of minerals. Similar results showing the effect of pulp density on the grade of zinc in the flotation process have been reported by Luo et al [24]. Other variables did not show a significant influence on the response.…”

Section: The Effect Of Experimental Parameters On Grade Recovery Ansupporting

confidence: 89%

“…The optimum solids content of the pulp is 35%, because by increasing the pulp density, more particles report to the concentrate and increase copper recovery (also reducing concentrate grade). Drawing on the literature in the flotation area, a dependence of mineral recovery upon pulp density can be seen [24,26,32]. The results of this research indicate that the recovery of mineral increased with the increase of percent of solids-in-pulp concentration.…”

Section: The Effect Of Experimental Parameters On Grade Recovery Anmentioning

confidence: 63%

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Combined Effect of Operating Parameters on Separation Efficiency and Kinetics of Copper Flotation

Bahrami

Ghorbani

Hosseini

et al. 2018

Mining, Metallurgy & Exploration

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This study aims to investigate the effects of operational variables on concentrate grade, recovery, separation efficiency, and kinetic parameters of the copper flotation process. For this purpose, the effects of the pulp solids content, collector and frother dosage, and preparation and concentrate collection time were studied using a Taguchi experimental design. The results of statistical analyses indicated that the concentrate collection time and pulp density were the most influential parameters on concentrate grade. Considering copper recovery, concentrate collection time, collector dosage, and pulp density were the most significant variables, in decreasing order of importance. Also, the separation efficiency was mostly influenced by the concentrate collection time. Furthermore, kinetic studies showed that the second-order rectangular distribution model perfectly matched the experimental flotation data. The highest kinetic constant of 0.0756 s −1 was obtained from the test, which was performed with 35% solids content and 40 and 20 g/t collector and frother, respectively. The highest predicted copper recovery of 99.57% was obtained from the test at 30% solids content, and the collector and frother dosages of 40 and 15 g/t, respectively.

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Section: The Effect Of Experimental Parameters On Grade Recovery Ansupporting

confidence: 89%

Section: The Effect Of Experimental Parameters On Grade Recovery Anmentioning

confidence: 63%

Combined Effect of Operating Parameters on Separation Efficiency and Kinetics of Copper Flotation

Bahrami

Ghorbani

Hosseini

et al. 2018

Mining, Metallurgy & Exploration

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show abstract

“…Its growth causes an increase in flotation recovery (εk) and yield of concentrate (γ) and decrease in concentrates (β) and tail grades (θ). However, it should be pointed out that, according to the literature [6,19,21,22], this effect is only visible to a certain boundary level of the collector, which was not achieved in these tests.…”

Section: Discussionmentioning

confidence: 71%

Evaluation of flotation process course on the example of sulphide ores

2017

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Abstract. The article concerns investigations over the influence of selected parameters of the flotation process course on the values of technological indices of beneficiation process assessment. Following parameters were under evaluation: the pulp density, pulp aeration (measured through the rotational speed of rotor) as well as dosage of flotation reagents. Four technological indices were registered: concentrate recovery, concentrate grade, yield of the concentrate and the tails grade. There were calculated correlation coefficients between selected parameters of flotation process course and the values of technological indices, along with determination of significance of these coefficient, at accepted probability level 0.95. In the next stage of investigations there were determined mathematical models with the concentrate recovery, concentrate grade, yield of concentrate and tails grade as the functions of pulp density, speed of the rotor and dosage of flotation reagent. On the basis of the investigations carried out, it was appeared that the dosage of flotation reagent was of the most significant influence on the values of technological indices of flotation process assessment. The least significant influence, in turn, was obtained for the pulp density.

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“…After conditioning with 10 −2 M KBX the spectrum changes significantly, showing a much higher absolute value as well as significant bands that may partly be attributed to the spectrum of bare KBX (Figure 1a). The spectral differences between KBX (Figure 1a) and the CCP-KBX reaction products (Figure 1b) are based on the new chemical structure of the compounds obtained after KBX conditioning on the CCP surface, an effect that is known for flotation reactions [50][51][52] as the composition of the reaction products varies strongly on the conditioning parameters. The reaction products have been investigated by several groups with FT-IR [7], XPS [53], and other X-ray techniques [54], leading to the conclusion that the reaction product is dominated by cuprous xanthate and dixanthogen.…”

Section: Atr Ft-ir Measurementsmentioning

confidence: 99%

Near-Field Optical Examination of Potassium n-Butyl Xanthate/Chalcopyrite Flotation Products

Firkala

Kuschewski²,

Nörenberg³

et al. 2018

Minerals

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Abstract:The present study introduces scattering-type scanning near-field infrared optical nanospectroscopy (s-SNIM) as a valuable and well-suited tool for spectrally fingerprinting n-butyl xanthate (KBX) molecules adsorbed to chalcopyrite (CCP) sample surfaces. The collector KBX is well known to float CCP and is used in beneficiation. We thus identified KBX reaction products both by IR optical far-and near-field techniques, applying attenuated total internal reflection Fourier-transform infrared spectroscopy (ATR FT-IR) in comparison to s-SNIM, respectively. The major KBX band around 880 cm −1 was probed in s-SNIM using both the tunable free-electron laser FELBE at the Helmholtz-Zentrum Dresden-Rossendorf facility, Germany, and table-top CO 2 laser illumination. We then were able to monitor the KBX agglomeration in patches <500 nm in diameter at the CCP surface, as well as nanospectroscopically identify the presence of KBX reaction products down to the 10 −4 M concentration.

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The critical importance of pulp concentration on the flotation of galena from a low grade lead–zinc ore

Cited by 33 publications

References 11 publications

Combined Effect of Operating Parameters on Separation Efficiency and Kinetics of Copper Flotation

Combined Effect of Operating Parameters on Separation Efficiency and Kinetics of Copper Flotation

Evaluation of flotation process course on the example of sulphide ores

Near-Field Optical Examination of Potassium n-Butyl Xanthate/Chalcopyrite Flotation Products

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