Lauryl Phosphate Flotation Chemistry in Barite Flotation

Lü, Ying; Liu, Weiping; Wang, Xuming; Cheng, Hao; Cheng, Fangqin; Miller, Jan D.

doi:10.3390/min10030280

Cited by 11 publications

(7 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although it has been believed that the ratio of terminal barium to sulfate groups determines the surface charge, the zeta potential of powder samples was observed to vary as a function of pH. For example, the isoelectric point by zeta potential measurements has been determined to be 4.6–5.5, − indicating that the surface would be electrostatically near neutral at pH 5. Based on the Gouy–Chapman theory and the zeta potential measured at pH 5 in these previous works, − the effective charge of barite would range from 6.1 × 10 –4 negative charges/nm 2 to 3.0 × 10 –3 positive charges/nm 2 .…”

Section: Discussionmentioning

confidence: 99%

“…For example, the isoelectric point by zeta potential measurements has been determined to be 4.6–5.5, − indicating that the surface would be electrostatically near neutral at pH 5. Based on the Gouy–Chapman theory and the zeta potential measured at pH 5 in these previous works, − the effective charge of barite would range from 6.1 × 10 –4 negative charges/nm 2 to 3.0 × 10 –3 positive charges/nm 2 . One may argue that the charge estimated by zeta potential is smaller than the formal surface charge due to the adsorbed ions in the Stern layer.…”

Section: Discussionmentioning

confidence: 99%

“…Based on the formation constants of the common molybdate oligomers (Table S6), a small portion of surface positive charge is enough to electrostatically attract and accumulate Mo(VI) to cause surface oligomerization. For example, the coverage of Mo(VI) can be as high as 0.03 Mo/nm 2 when the positive charge of the surface is fully compensated by the adsorption of the oxyanion. While this coverage is probably too low to be measured solely by RAXR, it indicates a substantial increase in ion concentration near the surface.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Sorption of Arsenate, Selenate, and Molybdate on the Barite (001) Surface

Yang

Lee

Fenter

et al. 2023

ACS Earth Space Chem.

View full text Add to dashboard Cite

Interactions of ions with ionically bonded minerals such as barite (BaSO 4 ) influence the fate and transport of the ions, while the factors that control the sorption of toxic oxyanions on barite remain elusive. In this study, the sorption of arsenate, selenate, and molybdate on the barite (001) surface was examined at pH ∼5 using in situ crystal truncation rod analysis, resonant anomalous X-ray reflectivity, and atomic force microscopy. The results show that arsenate and selenate mainly incorporate into the top monolayer of barite, while molybdate primarily adsorbs above the surface. The sorption coverage of arsenate is greater (by ∼100%) than that of selenate but similar to that of molybdate. The different incorporation coverages between arsenate and selenate can be explained by their different protonation states at pH 5. The incorporated arsenate may be stabilized by hydrogen bonds between arsenate and oxygen atoms of neighboring sulfate compared to selenate, which exists predominantly in the deprotonated state. The adsorption of molybdate above the surface probably stems from a surface-induced oligomerization, as the anion and the oligomer may be too large for incorporation. Our observation of these different sorption mechanisms demonstrates how the physicochemical properties of the anions control the selective uptake of the toxic metals on the dominant surface of the ionically bonded mineral barite.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Sorption of Arsenate, Selenate, and Molybdate on the Barite (001) Surface

Yang

Lee

Fenter

et al. 2023

ACS Earth Space Chem.

View full text Add to dashboard Cite

show abstract

“…In barite flotation, sodium oleate is widely used as a collector in a highly alkaline pulp, but it is susceptible to slime and hard water ions (Gurpinar et al, 2004;Chen et al, 2019;Lu et al, 2020). Also, Bhatti et al (2017) reported that a concentrate grade of over 91% could be obtained from a barite ore using sodium oleate with sodium silicate.…”

Section: Introductionmentioning

confidence: 99%

Estimation of grade and recovery in the concentration of barite tailings by the flotation using the MLR and ANN analyses

Denız¹,

Umucu²,

Deniz³

2022

Physicochem. Probl. Miner. Process.

View full text Add to dashboard Cite

This study aimed to find optimal models in a comparative framework to estimate the recovery and grade of barite concentrate obtained from the rougher flotation of the barite tailings. Therefore, firstly, the effect of four operating parameters (flotation time, pH, collector dosage, and depressant dosage) on the rougher flotation of the barite tailings containing 37.23% BaSO4 was experimentally investigated. Secondly, two models called the multivariable linear regression (MLR) and the artificial neural network (ANN) were used for the estimation of the recovery and grade of the barite concentrate for the rougher flotation optimization. The R 2 values found from the MLR and ANN models were 0.828 and 0.995 for the concentrate recovery, and 0.977 and 0.960 for the barite concentrate grade, respectively. In the comparison of the models determined, it was found that the ANN model expressed quite well than the MLR models, especially for the recovery of the rougher concentrate.

show abstract

“…Barite is the most common mineral of barium salt, whose main component is barium sulfate (BaSO4). It is chemically stable, insoluble in water and hydrochloric acid, non-magnetic and toxic, and can absorb α-rays, β-rays and γ-rays and other characteristics (Ogwuegbu et al, 2011;Haruo and Yoshio, 2014;Nuria et al, 2015;Kasia et al, 2016;Lu et al, 2020). Due to the chemical stability of barite, solid barium compounds made from barite are widely used in the fields of new energy (Zhao et al, 2014;Zhou et al, 2020;Cen et al, 2021;Liu et al, 2021), new materials, chemical industry, petroleum, light industry, atomic energy, military, building materials, medicine, agriculture, plastics, paper making, capacitors, semiconductors, electronic ceramics and other fields and industries (Gurpinar et al, 2004;Cristina et al 2015;Xiong et al 2020;Sadik, 2017;Obaidi et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Mchanistic study on the flotation of barite with C18H33NaO2 under microwave radiation based on UV-visible spectrophotometric analysis

Guo¹,

Wen²,

Wu³

2022

Physicochem. Probl. Miner. Process.

View full text Add to dashboard Cite

In this study, based on the pure mineral flotation test of barite, the effect law of microwave on barite flotation was investigated by using UV-visible spectrophotometer (L5), solution chemistry calculation and Zeta potential, scanning electron microscope (SEM), and other testing methods; at the same time, red flotation kinetic analysis was carried out to deeply explore the mechanism of C18H33NaO2 flotation of barite under microwave radiation. Mineral flotation tests show that barite, deionized water flotation after microwave treatment, recovery increased by 2.67%, 3.35%, respectively, while the pulp and the pulp of chemically added ore microwave action reduced by 2.90%, 8.51%, respectively. Microwave action barite can improve flotation recovery (up to 95.27%), the mechanism of action for microwave heating to improve the positive electrical properties of the surface of barite, and its specific surface area increased to improve the adsorption rate of sodium oleate on the surface of barite, thereby improving the flotation recovery. The flotation kinetics analysis revealed that the k-value of the primary kinetic model is the most informative among the four models of flotation kinetics, and its fitting results can truly reflect the flotation results of barite before and after the microwave action. By analyzing the flotation adsorption experiments of sodium oleate trapped barite by microwave action, we can provide an important reference for the efficient flotation adsorption behavior of barite. The adsorption behavior of barite can provide an important reference.

show abstract

Lauryl Phosphate Flotation Chemistry in Barite Flotation

Cited by 11 publications

References 37 publications

Sorption of Arsenate, Selenate, and Molybdate on the Barite (001) Surface

Sorption of Arsenate, Selenate, and Molybdate on the Barite (001) Surface

Estimation of grade and recovery in the concentration of barite tailings by the flotation using the MLR and ANN analyses

Mchanistic study on the flotation of barite with C<sub>18</sub>H<sub>33</sub>NaO<sub>2</sub> under microwave radiation based on UV-visible spectrophotometric analysis

Contact Info

Product

Resources

About