Selective flotation of brucite from calcite using HEDP-4Na as an inhibitor in a SDS system

Gong, Xiaolei; Yao, Jin; Yang, Bin; Fu, Yanghe; Wang, Yulian; Yin, Wanzhong

doi:10.1016/j.jiec.2023.05.047

Cited by 19 publications

(2 citation statements)

References 38 publications

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“…The flotation experiments were conducted before and after β-CD treatment to investigate the impact of collector and depressant dosage on the flotation behavior of barite. The SDS dosage experiment results are depicted in Fig 4. As shown in Fig 4, the increase in SDS dosage led to a decrease in barite recovery and concentrate density [37,38]. It is analyzed that SDS, as a surfactant, exhibits both collecting and…”

Section: Collector Dosage Experiments Resultsmentioning

confidence: 86%

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Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Li,

Xie,

et al. 2024

PLoS ONE

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High-density waste drilling fluid contains an abundance of recyclable weighting reagents, direct disposal can pollute the environment. In this paper, the primary mineral composition of a high-density waste drilling fluid from a well in the southwest oil and gas field was analyzed. This paper proposes β-cyclodextrin (β-CD) as a depressant for the recovery of barite from waste drilling fluid. The recovery process was investigated through inverse flotation experiments, and the mechanism was analyzed using zeta potential, contact angle analysis, and FTIR. The flotation experiments showed that under the SDS flotation system, when the pH was 9.0 and the amount of depressant β-CD was 900 g/t, the barite recovery and density reached the highest values, which were 87.41% and 4.042 g/cm3, respectively. Zeta potential experiments, contact angle analysis, and FTIR analysis indicate that β-CD adsorbed onto barite through enhancing the hydrophilicity of barite, electrostatic force adsorption, and strong adsorption, which could not be displayed by SDS through competitive adsorption. Furthermore, β-CD exhibited a selective inhibitory effect on barite and enabled reverse flotation. The mechanism model of the flotation separation process was established.

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Section: Collector Dosage Experiments Resultsmentioning

confidence: 86%

“…As shown in Fig 4 , the increase in SDS dosage led to a decrease in barite recovery and concentrate density [ 37 , 38 ]. It is analyzed that SDS, as a surfactant, exhibits both collecting and foaming properties [ 39 ].…”

Section: Resultsmentioning

confidence: 99%

Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Li,

Xie,

et al. 2024

PLoS ONE

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Effect of Surface Dissolution on the Floatability of Brucite in Three Anionic Collector Systems

Gong,

Yao,

Yin

et al. 2024

Surface & Interface Analysis

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This study investigated the relation between the solubility and floatability of the soluble mineral brucite, focusing on the concentration characteristics of dissolved Mg2+ in brucite under three dissolution methods and the surface characteristics after dissolution. Some common rules of brucite flotation in three anionic collectors were discovered. Results of a flotation test showed that for three anionic collector systems of sodium oleate, sodium dodecyl sulfonate, and oxidized paraffin soap, the flotation recovery rate of brucite increased with the time of dissolution and decreased with the removal of dissolved Mg2+, but the flotation recovery rate is lower than that of untreated brucite. Inductively coupled plasma spectroscopy indicated that the content of dissolved Mg2+ in brucite slurry increases with increasing brucite content or dissolution time. Zeta potential measurements showed that the ability of dissolved Mg2+ to increase the surface potential of brucite follows the order of H2SO4 action > HCl action > H2O action. Adsorption capacity measurements showed that the presence of dissolved Mg2+ after dissolution is not beneficial for the adsorption of the three collectors on the surface of brucite. The capacity of the adsorption collectors follows the order of brucite after H2O dissolution > brucite after HCl dissolution > brucite after H2SO4 dissolution. Scanning electron microscopy and X‐ray photoelectron spectroscopy analyses indicated that the surface dissolution promoted the dissolution of Mg2+ on brucite surface in the solution, reducing the number of Mg sites on brucite surface and deteriorating the collection effect of the collector.

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Flotation separation of dolomite and brucite via selective adsorption of the inhibitor tetrasodium hydroxyethylphosphate

Gong,

Yao,

Yang

et al. 2023

J. Cent. South Univ.

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Selective flotation of brucite from calcite using HEDP-4Na as an inhibitor in a SDS system

Cited by 19 publications

References 38 publications

Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Effect of Surface Dissolution on the Floatability of Brucite in Three Anionic Collector Systems

Flotation separation of dolomite and brucite via selective adsorption of the inhibitor tetrasodium hydroxyethylphosphate

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