Journal ArticleDOI
The flotation separation of scheelite from calcite and fluorite using dextran sulfate sodium as depressant
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TLDR
In this paper, a dextran sulfate sodium, a medical intermediate rich in sulfate group, was introduced as a potential depressant for calcite and fluorite in scheelite flotation.About:
This article is published in International Journal of Mineral Processing.The article was published on 2017-12-10. It has received 58 citations till now. The article focuses on the topics: Sulfate & Depressant.read more
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Surface modification of smithsonite with ammonia to enhance the formation of sulfidization products and its response to flotation
TL;DR: In this article, a promising method of improving the sulfidization flotation of smithsonite through surface modification with ammonia was proposed, which increased the amount of sulfide ion species adsorbed onto the mineral surface, thereby facilitating the attachment of xanthate species onto the sulfified mineral surface and promoting its hydrophobicity.
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New insights into the carboxymethyl cellulose adsorption on scheelite and calcite: adsorption mechanism, AFM imaging and adsorption model
TL;DR: In this paper, the effect of depressant carboxymethyl cellulose (CMC) on the separation of scheelite from calcite was studied and the results indicated that CMC could significantly depress the floatability of calcite, but its adverse effect on the floatable of scheelsite was very small.
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Selective depressive effect of sodium fluorosilicate on calcite during scheelite flotation
TL;DR: In this article, the selective depression effect of SFS on calcite was proven by corresponding experiments, such as zeta potential test, FTIR analysis and XPS analysis, which showed that the negatively charged species (F−, SiO3, CaF2, CaSiF6, etc) in the SFS solution were more likely to adsorb on the surface of the calcite with positive potential.
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Molecular Insight into Fatty Acid Adsorption on Bare and Hydrated (111) Fluorite Surface
TL;DR: The adsorption of fatty acids with various chain structures on the fluorite surface is investigated using density functional theory, including a correction for dispersive interactions, and it is observed that the molecular form is preferred over the dissociated one and the molecule adsorbs on a surface calcium atom with an energy of -78.2 kJ mol-1.
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Selective flotation separation of bastnaesite from calcite using xanthan gum as a depressant
TL;DR: In this paper, the authors used xanthan gum (XG) as a non-toxic, biodegradable, and cheap depressant to selectively separate bastnaesite from calcite by flotation and probe the corresponding mechanism.
References
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The flotation separation of scheelite from calcite using acidified sodium silicate as depressant
TL;DR: In this paper, the authors studied the flotation separation of scheelite from calcite using sodium oleate as collector and acidified sodium silicate as depressant and showed that the use of acidified salt as a depressant can achieve a 3:1 ratio of the ratio of oxalic to salt.
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Fatty acid flotation versus BHA flotation of tungsten minerals and their performance in flotation practice
Haisheng Han,Yuehua Hu,Wei Sun,Li Xiaodong,Chonggao Cao,Runqing Liu,Tong Yue,Xiangsong Meng,Guo Yanzhe,Jianjun Wang,Zhiyong Gao,Pan Chen,Huang Weisheng,Liu Jie,Xie Jiawen,Chen Yulin +15 more
TL;DR: In this article, a new collector, lead complexes of benzohydroxamic acid, was found to be selective for the separation of scheelite and calcium minerals with little water glass, and a novel flotation process was developed for the recovery of tungsten minerals in Shizhuyuan Mine in China.
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The effect of sodium alginate on the flotation separation of scheelite from calcite and fluorite
TL;DR: In this paper, the effect of sodium alginate on the flotation separation of scheelite from calcite and fluorite using sodium oleate as collector was investigated using zeta potential measurements, contact angle measurements and FTIR.
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Selective flotation of scheelite from calcite: A novel reagent scheme
TL;DR: In this paper, octyl hydroxamic acid (HXMA-8) was used as an associate collector with NaOl in scheelite flotation, and the flotation tests showed that a novel reagent scheme, i.e., a lower dosage of SS (300 mg/L) and mixed collectors of HXMA+NaOl (total concentration 4.5 ǫ −10 −4 Âmol/L, preferred mass ratio of 1:2).
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Molecular Modeling of Interactions of Alkyl Hydroxamates with Calcium Minerals
Pradip,Beena Rai,T. K. Rao,Shailaja Krishnamurthy,R. Vetrivel,Jerzy A. Mielczarski,Jean-Maurice Cases +6 more
TL;DR: In this paper, the results of theoretical computations on the molecular modeling of mineral-reagent interactions in a fluorite-calcite-fluorapatite-alkyl hydroxamate separation system were found to correlate remarkably well with the experimental microflotation test results.