Typical roles of metal ions in mineral flotation: A review
Key words: metal ions; flotation; oxide mineral; silicate mineral; sulfide mineral 1 Introduction Flotation is a versatile method extensively used in mineral processing fields to separate valuable minerals from gangue minerals selectively, which is based on the wettability differences among mineral surfaces [1,2]. Metal ions, mainly …
Adsorption behavior of Pb and Cd ions on bauxite …
The isoelectric point of bauxite flotation tailings shifts from 3.6 to 5.6 in the presence of Pb 2+ ions. The specific surface area of bauxite flotation tailings changes from 12.57 to 20.63 m 2 /g ...
The Influence of Backwater Al3+ on Diaspore Bauxite …
PDF | The effect of Al3+ in backwater on the flotation of diaspore bauxite was investigated by micro-flotation tests and the underlying mechanisms were... | Find, read and cite all the...
Leaching Behaviors of Lithium-Rich Bauxite Flotation
Leaching Behaviors of Lithium‑Rich Bauxite Flotation Tailings in Sodium Bicarbonate Solution Dong‑zhan Han1,2 · Lei‑ting Shen1 · Er‑wei Song3 ... The leaching mechanism of lithium and potassium in sodium bicarbonate solution is that sodium ions in the sodium bicarbonate solution substituted Li+ of cookeite and K+ of illite ...
Separation of silica from bauxite via froth flotation
Assiduous efforts on the high-efficiency flotation of quartz with calcium ion activation have been ongoing, while there is a lack of understanding of its potential mechanism. ... (e.g. rutile and ilmenite). By reverse flotation of the ore, a high-grade bauxite concentrate with A/S ratio 8.54 was obtained, however the Al 2 O 3 recovery …
Effects of sodium tripolyphosphate and sodium carbonate …
It has been reported that Ca 2+ and Mg 2+ ions have significant influences on the dispersion and flocculation of minerals (Konan et al., 2007, Van Lierde, 1980).Sodium carbonate is widely used as pulp dispersant in bauxite flotation in China. Its key roles are pH adjusting, pulp dispersing and eliminating of calcium ions.
A review of pretreatment of diasporic bauxite ores by flotation …
The addition of ions such as Ca 2+ could enhance talc depression. ... However, oleic acid collectors are still widely used in bauxite flotation as the most commonly used collectors (Deng et al ...
The Influence of Backwater Al3+ on Diaspore Bauxite …
Bauxite Flotation Chaojun Fang 1, Ziyong Chang 2, Qiming Feng 1, Wei Xiao 1 ID, Shichao Yu 1, Guanzhou Qiu 1 ... For the bauxite with A/S 5.9, the concentration with A/S 11.39, and the recovery of 86.45% were gained [2]. The molecular model of diaspore and kaolinite are shown in Figure1[3,4]. The Al atomic
Treatment technique for wastewater from bauxite flotation …
The residual soluble solids and ions in bauxite flotation wastewater increase hardness, cause flocculation sedimentation under some conditions, block pipelines, and cause the water color standard to be exceeded. Flotation reagent residues and flocculant residues are the main reagent residues in bauxite flotation wastewater.
The role of cationic polyacrylamide in the reverse flotation …
The reverse flotation separation of kaolinite and diaspore was achieved at pH 5.5–8.5 by using dodecylamine as a collector and cationic polyacrylamide as a depressant. At pH 5.5–8.5, DDA was mainly in the form of ( C 12 H 25 NH 3 +) 2 and C 12 H 25 NH 3 + cationic ions in aqueous solution, and the main species were of Al OH and Al …
(PDF) Bauxite Residue Flotation as an Alternative for Iron
Abstract and Figures. Bauxite residue (BR) is a byproduct of the alumina production by Bayer process. BR generated from gibbsitic bauxite usually presents iron as major element associated with ...
Treatment technique for wastewater from bauxite …
In independent bauxite flotation plants, flotation wastewater is simply treated or directly discharged without treatment before the influx of fresh water, …
Solution chemistry of flotation separation of diasporic bauxite
The technological schemes of direct or reverse flotation separation of aluminum silicate minerals from bauxite were suggested. The fundamentals involved the technologies were studied. The relationship of collectors, dispersant and pH can be determined by solution chemical calculation in the direct flotation of bauxite by anionic collectors.
Treatment of backwater in bauxite flotation plant and …
To ensure that an appropriate production index is maintained, freshwater is added during bauxite flotation after the recycled water is discharged, and bauxite flotation wastewater is generated. Bauxite flotation wastewater is generally weakly alkaline (the pH is approximately 9.0) and mainly contains suspended solids, soluble …
The Influence of Backwater Al3+ on Diaspore …
1. Introduction. It was reported that, until 2015, the bauxite ore reserves in China was 4.71 billion tons [1], and the majority was diaspore bauxite. Diaspore bauxite is unsuitable for …
Study on potential microbial community to the waste water …
Discharging waste water from the bauxite desilication process will bring potential environmental risk from the residual ions and organic compounds, especially hydrolyzed polyacrylamide. Characterization of the microbial community diversity in waste water plays an important role in the biological treatment of waste water. In this study, …
Treatment of backwater in bauxite flotation plant and optimization by
The bauxite flotation plants in China, most of which were built and put into production after 2009, retained good flotation indexes by discharging the backwater out of the recycling system and replacing it with fresh water. ... Ions influence group: Flotation tests on water to which was added analytic reagents such as CaCl2, Fe2SO4, Na2SO4, …
Effects of sodium tripolyphosphate and sodium carbonate …
@article{Yuhua2011EffectsOS, title={Effects of sodium tripolyphosphate and sodium carbonate on the selective flocculation of diasporic-bauxite in the presence of calcium and magnesium ions}, author={Wang Yuhua and Sun Da-xiang and Wang Liguang and Zhou Yu-lin}, journal={Minerals Engineering}, year={2011}, volume={24}, …
(PDF) REMOVAL OF IRON-BEARING MINERALS FROM GIBBSITIC BAUXITE BY …
The bauxite Fe O content was reduced from 7.66%. to 4.81-5.03%. In addition, the flotation performance decreased by diminishing the pH from 9.5 to 8.5 or increasing. the pH to 10.5. The milling ...
The cation effect on adsorption of surfactant in the froth flotation …
In the flotation of sphalerite activated by copper ions, the role of Ca 2+ and Mg 2+ appeared to be moderators which act to reduce the amount of Zn replaced by Cu on the sphalerite surface (Majid et al., 2016). As for flotation of oxides minerals, water hardness cations also have an important effect on the adsorption of collectors on ore …
Effect and mechanism of quaternary ammonium salt ionic …
DOI: 10.1016/j.mineng.2022.107523 Corpus ID: 248145728; Effect and mechanism of quaternary ammonium salt ionic liquid as a collector on desulfurization and desilication from artificial mixed bauxite using flotation
Treatment technique for wastewater from bauxite flotation …
DOI: 10.1016/j.jclepro.2021.130321 Corpus ID: 245622905; Treatment technique for wastewater from bauxite flotation and an application for its reuse @article{Long2021TreatmentTF, title={Treatment technique for wastewater from bauxite flotation and an application for its reuse}, author={Tengfa Long and Xi Liu and Chenbing …
Effect of calcium ions on the interaction of alkaline
Purpose The interaction of minerals and organic matter significantly affects the stability of organic carbon, which is key to the rehabilitation of bauxite residue. However, due to the microscopic structure of minerals and the chemical composition of dissolved organic matter (DOM), the interaction mechanism between alkaline minerals and DOM in …
Flotation enhancement of low-grade bauxite using oxalic …
DOI: 10.1016/j.apsusc.2021.151964 Corpus ID: 244468639; Flotation enhancement of low-grade bauxite using oxalic acid as surface pretreatment agent @article{Li2021FlotationEO, title={Flotation enhancement of low-grade bauxite using oxalic acid as surface pretreatment agent}, author={Huaxia Li and Wencui Chai and Yijun Cao and Shichong …
Effects of sodium tripolyphosphate and sodium carbonate …
Sodium carbonate is widely used as pulp dispersant in bauxite flotation in China. Its key roles are pH adjusting, pulp dispersing and eliminating of calcium ions. The influences of Ca 2+ and Mg 2+ ions on the dispersion of individual minerals were investigated when sodium carbonate and sodium tripolyphosphate were used as …
The Influence of Backwater Al3+ on Diaspore Bauxite …
However, the current research is limited about the effect of backwater metallic ions on the flotation of diaspore bauxite. Due to the dissolution of bauxite and other reasons, a certain number of Al3+ will be presented in backwater and it would have an important effect on the flotation of bauxite. Diaspore and kaolinite
The Impact of Backwater Iron Ions on Bauxite Flotation
The concentration of iron ions in backwater was 1 × 10−5 mol/L measured by ICP. The micro-flotation results indicated that iron ions activated the flotation of …
The Impact of Backwater Iron Ions on Bauxite …
Abstract. The effect of iron ions in backwater on the flotation of diaspore bauxite was investigated by ICP measurement, micro- otation tests, zeta potential measurements and …
Adsorption behavior of Pb2+ and Cd2+ ions on bauxite flotation tailings
The adsorption behavior of Pb2+ and Cd2+ ions on bauxite flotation tailings was investigated to demonstrate the adsorptivity of the bauxite flotation tailings. The adsorption percentage of Pb2+ and Cd2+ ions as a function of adsorbent dosage, solution pH value and shaking time were determined by batch experiments. The …
Experimental and molecular dynamics simulation study on …
1. Introduction. In China, bauxite reserves are general diaspore resources with Al 2 O 3 /SiO 2 mass ratio ranging from 4 to 6 (Deng et al., 2016).To prepare for the feed of Bayer process (normally Al 2 O 3 /SiO 2 mass ratio is more than 8), flotation is an effective physical separation method commonly used to remove part of aluminosilicate …
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