Selective reverse flotation of apatite from dolomite in collophanite ore using saponified gutter oil fatty acid as a collector

Liu, Xing; Li, Chengxiu; Luo, Huihua; Cheng, Renju; Fei-yan, Liu

doi:10.1016/j.minpro.2017.06.004

Cited by 75 publications

(27 citation statements)

References 18 publications

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“…Therefore, to achieve selective separation, it is crucial to develop selective collectors [51,54,55]. It has been reported that a new kind of collector, "Saponified gutter oil fatty acid" (GOFA), which is an environmentally friendly, cost-effective, and selective collector, exhibits excellent selectivity towards adsorption on dolomite owing to the considerably high magnesium content of dolomite and the lack of magnesium in apatite during reverse flotation of apatite in collophanite ore [30]. Moreover, recovery of Mg carbonates was high when dodecyl phosphate was used as a collector, which indicates effective adsorption capabilities on both magnesite and dolomite [12].…”

Section: Collectorsmentioning

confidence: 99%

A Review of Flotation Separation of Mg Carbonates (Dolomite and Magnesite)

et al. 2018

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Abstract:It is well documented that flotation has high economic viability for the beneficiation of valuable minerals when their main ore bodies contain magnesium (Mg) carbonates such as dolomite and magnesite. Flotation separation of Mg carbonates from their associated valuable minerals (AVMs) presents several challenges, and Mg carbonates have high levels of adverse effects on separation efficiency. These complexities can be attributed to various reasons: Mg carbonates are naturally hydrophilic, soluble, and exhibit similar surface characteristics as their AVMs. This study presents a compilation of various parameters, including zeta potential, pH, particle size, reagents (collectors, depressant, and modifiers), and bio-flotation, which were examined in several investigations into separating Mg carbonates from their AVMs by froth flotation.

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Section: Collectorsmentioning

confidence: 99%

A Review of Flotation Separation of Mg Carbonates (Dolomite and Magnesite)

et al. 2018

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“…Over 90% of China's phosphate rock is high magnesium phosphate rock, and dolomite is the main carbonate gangue mineral of it. Flotation has been the most widely adopted technique for the separation of dolomite from apatite for this kind of magnesium (calcium) phosphate ore, and an anionic collector, such as sodium oleate, is usually used in the acidic pulp for reverse flotation [1][2][3]. Flotation is a separation method based on the difference of physical and chemical properties between valuable minerals and gangue minerals [4].…”

Section: Introductionmentioning

confidence: 99%

Insight into the Influence of Surface Roughness on the Wettability of Apatite and Dolomite

Wang

Zhang

2020

Minerals

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Surface roughness has an important influence on the wettability of particles. This paper is an innovative exploration to control the surface wettability of apatite and dolomite from the perspective of roughness in the background of phosphate flotation. Roughness characteristics of apatite and dolomite particles and its effects on wettability were investigated with surface roughness, contact angle measurements, and SEM analysis. The relationship between surface energy and wettability of different roughness surfaces was also discussed. The results indicated that the influence of roughness on apatite and dolomite particles showed the same regularity, and wettability increased with the increasing roughness for hydrophilic surfaces, while the wettability decreased for hydrophobic surfaces. The influence of roughness on wettability can be well explained by Wenzel and Cassie models, and the surface energy of different rough surfaces had a strong correlation with their wettability. When sodium oleate was added after acid treatment, the apatite was hydrophilic, while the dolomite was hydrophobic; the difference in wettability between them became greater as surface roughness increased. Thus, it can be predicted that the selective separation of dolomite and apatite under acid reverse flotation conditions can be strengthened by increasing the mineral surface roughness during comminution.

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“…From the investigations, it can be concluded that, from a selectivity (of apatite) standpoint, the use of collector SAFS and depressant H 3 PO 4 has the effect of synergistic enhancement. The interaction between SAFS and Mg on the dolomite surface strengthened the chemisorption effect [16]. Owing to the considerable Mg content of dolomite and the lack of Mg in apatite, SFAS was selectively chemisorbed onto the dolomite surface.…”

Section: Rees Distribution Of Concentrate and Tailing Productsmentioning

confidence: 99%

The Occurrence States of Rare Earth Elements Bearing Phosphorite Ores and Rare Earth Enrichment Through the Selective Reverse Flotation

et al. 2019

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The reserve of rare-earth element-bearing phosphorite ores in Guizhou province in western China is huge. Increased demand for the different products manufactured from rare-earth elements has resulted in an extreme need for reasonable and comprehensive extraction of rare-earth elements. An improved understanding of rare-earth element occurrence states in single minerals of ores is important for their further processing. In this paper, rare-earth element contents were analyzed by inductively coupled plasma (ICP), and the occurrence states in single minerals were further investigated through SEM-EDS and focused ion beam-scanning electron microscope (FIB-SEM) methods. The results indicate that rare-earth element contents of apatite are far more than that of dolomite. No independent mineral of rare-earth elements exists for the studied sample. Rare-earth elements are present in the form of ions in the lattices of apatite. Based on the analysis of occurrence states and properties in single minerals, the distribution of rare-earth elements in the flotation process was investigated by reverse flotation technology. It shows that rare-earth elements are mainly concentrated in apatite concentrate. Under the optimized conditions, the P2O5 grade increases from 11.36% in the raw ore to 26.04% in the concentrate, and the recovery is 81.92%, while the total rare-earth oxide grade increases from 0.09% to 0.21% with the recovery of 80.01%, which is similar to P2O5 recovery. This study presents the feasibility of extracting rare-earth elements from rare-earth element-bearing phosphorite ores through the flotation of apatite.

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Selective reverse flotation of apatite from dolomite in collophanite ore using saponified gutter oil fatty acid as a collector

Cited by 75 publications

References 18 publications

A Review of Flotation Separation of Mg Carbonates (Dolomite and Magnesite)

A Review of Flotation Separation of Mg Carbonates (Dolomite and Magnesite)

Insight into the Influence of Surface Roughness on the Wettability of Apatite and Dolomite

The Occurrence States of Rare Earth Elements Bearing Phosphorite Ores and Rare Earth Enrichment Through the Selective Reverse Flotation

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