The selective flotation separation of celestite from fluorite and calcite using a novel depressant EDTA

Tian, Jia; Xu, Longhua; Sun, Wei; Han, Haisheng; Zeng, Xiaobo; Fang, Shuai; Hong, Kai Jeat; Hu, Yuehua

doi:10.1016/j.powtec.2019.04.051

Cited by 31 publications

(4 citation statements)

References 31 publications

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“…Three reagents, namely ethylenediamine tetraacetic acid (EDTA), sodium hexametaphosphate (SHMP) and sodium silicate (SS), were used to regulate Pb and Zn flotation in seawater. Among these reagents, EDTA was a chelating agent of calcium and magnesium ions [20,21], while SHMP [22][23][24] and SS [25,26] were the dispersants. By comparing the test results, the flotation mechanism was discussed through microflotation tests, contact angle measurements, bubble-particle attachment tests, XPS analysis, and zeta potential measurements.…”

Section: Introductionmentioning

confidence: 99%

Effects of seawater on the adsorption of xanthate onto galena and sphalerite

Song,

Yao,

Yin

2024

J. Phys.: Conf. Ser.

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Seawater contains divalent calcium and magnesium cations. Under alkaline conditions, calcium and magnesium ions react with hydroxide ions to form insoluble hydroxyl complexes or hydroxide precipitates. The hydrophilic substances that may be adsorbed on the mineral surface during the flotation process hinder the adsorption of the collector, affecting mineral hydrophobicity, and thus reducing the floatability of the mineral. In this study, the effects of seawater on the adsorption of xanthate onto galena and sphalerite were investigated. The results show that under strong alkaline conditions, seawater has significant and slight adverse effects on sphalerite and galena, respectively. Flotation regulators such as ethylenediamine tetraacetic acid, sodium hexametaphosphate, and sodium silicate can eliminate the adverse effect on galena and sphalerite flotation to a certain extent. The mechanisms were revealed through microflotation experiments, contact angle measurements, bubble-particle attachment tests, zeta potential measurements, and XPS analysis.

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Section: Introductionmentioning

confidence: 99%

Effects of seawater on the adsorption of xanthate onto galena and sphalerite

Song,

Yao,

Yin

2024

J. Phys.: Conf. Ser.

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“…Liu et al found that the addition of amino trimethylene phosphonic acid (ATMP) could reduce the recovery of calcite to less than 15% (Liu et al, 2022). Ethylenediaminetetraacetic acid (EDTA) was used by Tian et al to reduce the separation difficulty of diatomite from fluorite and calcite (Tian et al, 2019). Zhang et al tried the polyacrylic acid (PAA) as an environmental inhibitor to flotation of fluorite, which could hinder the adsorption of sodium oleate on calcite (Zhang et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Effective flotation separation of scheelite and calcite by applying methylene phosphonic acid sodium as a novel and green depressant

Zhou¹,

Hao²,

Guo³

et al. 2023

Physicochem. Probl. Miner. Process.

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It is known that the flotation separation of scheelite and calcite is quite difficult due to their similar surface properites. To slove the problem, ethylenediaminetetra (methylene phosphonic acid) sodium (EDTMPS), an environmentally friendly reagent, was employed as an efficient depressant for flotation separation of calcite for the first time. In flotation experiments, it demonstrates that EDTMPS could strongly inhibit the flotation of calcite but barely affect the flotaiton behavior of scheelite, showing excellent dpress ability and selectivity. Based on a series of measurements including contact angle analysis, zeta potential, and XPS analysis, it was found that large amout of EDTMPS could be absorbed on the surface of calcite through strong chemical chelation reaction and thus inhibiting the further adsorption of NaOL. On the contrary, little EDTMPS was absorbed on that of scheelite owing to the negatively charged tungstate ions on the surface in relative terms. All in all, these results exhibit EDTMPS has excellent selective inhibition ability on calcite, which can be potentially applied in actual scheelite and calcite flotation separation process.

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“…Tian et al . [25] studied the mechanism of action of the inhibitor ethylenediaminetetraacetic acid and the collector sodium lauryl sulfate in the flotation separation of lapis lazuli with fluorite and calcite. Ethylenediaminetetraacetic acid can be chelated.…”

Section: Introductionmentioning

confidence: 99%

“…The further adsorption of sodium oleate reduced the flotation of calcite and achieved the flotation separation of the two minerals. Tian et al [25] studied the mechanism of action of the inhibitor ethylenediaminetetraacetic acid and the collector sodium lauryl sulfate in the flotation separation of lapis lazuli with fluorite and calcite. Ethylenediaminetetraacetic acid can be chelated.…”

Section: Introductionmentioning

confidence: 99%

The effect of molecular assembly between collectors and inhibitors on the flotation of pyrite and talc

2019

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In the flotation process, the traditional dosing sequence is to add an inhibitor first, followed by a collector. However, in the sorting process of copper sulfide ore, this method of dosing does not effectively separate sulfide minerals and layered magnesium silicate minerals. In this study, the effect of adding a guar gum (as an inhibitor) and potassium amyl xanthate (as a collector, shortened as PAX) sequence to the flotation separation of pyrite and talc was investigated by micro-flotation tests, adsorption amount measurements, contact angle measurement and FT-IR analysis. The results show that the collector only adsorbs on the pyrite surface, while the inhibitor has a strong adsorption capacity on the pyrite and talc surface. Through the change of the order of the flotation reagent addition, PAX preferentially adsorbs on the pyrite surface, thereby preventing guar gum from adsorbing on the pyrite surface and achieving the selective inhibition of talc by guar gum. This study will help in understanding the molecular assembly between collectors and inhibitors to further treat complex copper sulfide nickel ore.

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The selective flotation separation of celestite from fluorite and calcite using a novel depressant EDTA

Cited by 31 publications

References 31 publications

Effects of seawater on the adsorption of xanthate onto galena and sphalerite

Effects of seawater on the adsorption of xanthate onto galena and sphalerite

Effective flotation separation of scheelite and calcite by applying methylene phosphonic acid sodium as a novel and green depressant

The effect of molecular assembly between collectors and inhibitors on the flotation of pyrite and talc

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