Statistical analysis of Egyptian oil shale column flotation

Sobhy, Ahmed; Yehia, Ahmed; Hosiny, F. I. El; Ibrahim, Suzan S.; Amin, Rasha

doi:10.1080/19392699.2019.1622530

Cited by 8 publications

(3 citation statements)

References 18 publications

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“…The interaction between the activator and depressant dosages positively affected the separation efficiency. This is because the depressant and activator dosages significantly effectively depress the iron oxide particles and activate the quartz particles respectively for an efficient flotation process by the anionic collector at 11.5 pH value since the flotation technique relies on the enhanced capture of hydrophobic minerals by micro-bubbles, while the hydrophilic minerals settle down to the tailings stream (Laplante et al, 1993;Sobhy et al, 2019). Furthermore, the depressant dosage showed major influences on the separation efficiency in comparison with the activator dosage.…”

Section: Factors Combined Effects and Optimizationmentioning

confidence: 99%

Application of uniform test design in optimizing the flotation reagents of iron anionic reverse flotation circuit

Hou¹,

Sobhy²

2021

Physicochem. Probl. Miner. Process.

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Most iron reserves are low in grade with quartz as the main gangue mineral, and anionic reverse flotation has become the most crucial separation method in the processing plants of iron ore. Thus, a flotation feed sample that is a mixture of low-intensity and high-gradient magnetic separators concentrates was acquired from a processing plant. The sample characterizations with X-ray diffraction (XRD), X-ray fluorescence (XRF), laser particle size analyzer, and mineral liberation analysis (MLA) confirmed that the sample consists of iron oxide as a valuable mineral and quartz as a gangue mineral with adequate liberation degree. In the anionic reverse flotation, the interaction of the flotation reagents with the constituents of the feed makes the flotation a complex system. Thus, the selection and optimization of regent dosages were performed using a uniform experimental design to estimate the optimum separation efficiency. The optimum reagent system was 1.6 kg/Mg starch depressant, 1.0 kg/Mg calcium oxide (lime) activator, and 0.8 kg/Mg TD-II anionic collector. At the optimum, 68.90% iron grade with 92.62% recovery was produced.

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Section: Factors Combined Effects and Optimizationmentioning

confidence: 99%

Application of uniform test design in optimizing the flotation reagents of iron anionic reverse flotation circuit

Hou¹,

Sobhy²

2021

Physicochem. Probl. Miner. Process.

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“…e Z-test has the limitation that it is applied when the sample size is greater than thirty. e authors of [1][2][3][4] and [5] worked on the applications of statistical tests.…”

Section: Introductionmentioning

confidence: 99%

Correlated Proportions Test under Indeterminacy

Almarashi

Aslam

2021

Journal of Mathematics

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The existing Z -test for correlated proportions under classical statistics is applied when observations in the data are exact and precise. In the current paper, Z -test for correlated proportions is proposed to deal with the data having indeterminate observations. The statistic of Z -test for correlated proportions under neutrosophy is introduced in the paper. The testing procedure of the proposed test is given. The application of the proposed test is given using the price of oil data. From the application, it is clear that the proposed test outperforms the existing Z -test for correlated proportions under classical statistics in terms of flexibility, adequacy, and information. The simulation study also shows the effect of indeterminacy on the statistic of the proposed test.

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“…A concentrate of 42% kerogen with 94% recovery was produced using Falcon SB40 concentrator at 60 Hz and water pressure of 4 Psi (Yehia et al, 2017). A concentrate of 38% kerogen with 88.5% recovery was obtained using column flotation in presence of kerosene as a collector and MIBC as a frother (Sobhy et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Impact of cationic-anionic surfactants on selective oil agglomeration of oil shale

Hassan¹,

Khalek²,

Amin³

2020

Physicochem. Probl. Miner. Process.

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Egyptian oil shale from Red Sea area is upgraded via oil agglomeration technique to achieve a clean fuel. A representative sample is characterized to identify its undesirable components and its liberation size. The quartz, apatite, calcite, siderite and anhydrite are the main gangue minerals. The sample was pulverized to less than 20 µm for efficient liberation. The impact of anionic (Calcium dodecyl benzene sulfonate, CDBS) or/and cationic (Cetrimonium bromide, CTAB) surfactants on the zeta-potential and agglomeration process was investigated in presence of different kerosene concentrations. A concentrate of 62% kerogen with 95% recovery was obtained from feed of 29% kerogen using 0.1% CTAB/CDBS mixture in 2% kerosene emulsion.

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Statistical analysis of Egyptian oil shale column flotation

Cited by 8 publications

References 18 publications

Application of uniform test design in optimizing the flotation reagents of iron anionic reverse flotation circuit

Application of uniform test design in optimizing the flotation reagents of iron anionic reverse flotation circuit

Correlated Proportions Test under Indeterminacy

Impact of cationic-anionic surfactants on selective oil agglomeration of oil shale

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