A review of pretreatment of diasporic bauxite ores by flotation …
Separation of diaspore from bauxite by selective flocculation using hydrolyzed polyacrylamide. Wenli Liu Yue-hua Hu Wei Sun. Materials Science, Environmental Science. 2014. Selective flocculation is a new method to solve the problem of China's bauxite de-silication besides flotation and reverse flotation. The method of selective flocculation ...
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Effects of sodium tripolyphosphate and sodium carbonate …
In the case of scheelite flotation, it has been shown that sodium carbonate improves both grade and/or recovery (Martins and Amarante, 2012;Filippova et al., 2017;Liu et al., 2016;Gordon et al ...
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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}, …
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Ionic Effect of NaCl and KCl on the Flotation of Diaspore
The major type of bauxite in China is low-grade diasporic bauxite, which is mainly composed of diaspore and kaolinite. Separation of silicate minerals by flotation technology can meet the requirements of Bayer process, but Na +, K + and Cl − deriving from mineral dissolution and entrainment in flotation water will inevitably mix in the …
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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 …
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Recent advances in reverse flotation of diasporic ores––A …
The reverse flotation was able to upgrade the Chinese diasporic bauxite ores to an alumina to silica mass ratio of greater than 10 at an alumina recovery greater than 85%. It is hoped that this knowledge may lead to applications in other areas where gangue clay minerals are a problem such as potash, phosphate, iron ores and low rank …
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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 ...
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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, …
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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 ...
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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 …
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(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 ...
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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 …
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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, …
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Flotation Decarbonization and Desulfurization of a High-Sulfur Bauxite
A high sulfur content is one of the challenges in the processing of refractory bauxites in China. The high carbon content of bauxite makes it more difficult to deal with. Desulfurization and decarbonization are the critical issues in the efficient exploitation of high-sulfur bauxite resources. An experimental study on the removal of sulfur and …
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(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 ...
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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...
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Effect of Thermal Activation on Phase Transformation and …
The Impact of Backwater Iron Ions on Bauxite Flotation. C. Fang L. Ou Q. Feng Shichao Yu Jun Wang. Environmental Science, Chemistry. 2018; The effect of iron ions in backwater on the flotation of diaspore bauxite was investigated by ICP measurement, micro-flotation tests, zeta potential measurements and solution chemistry analyses. ...
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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 …
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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 ...
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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 …
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The Impact of Backwater Iron Ions on Bauxite Flotation
research about the effect of metallic ions in backwater on the flotation of diaspore bauxite. Due to the dissolution of diaspore bauxite, the quality of fresh water, the mechanical wear and other reasons, a certain number of iron ions in backwater will be presented. The concentration of iron ions in backwater was 1 10−5 mol/L measured by ICP.
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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, …
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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 …
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Effect and mechanism of quaternary ammonium salt ionic …
In order to solve the above problems, this research has developed a quaternary ammonium salt type ionic liquid as a collector for the simultaneous desulfurization and desiliconization of bauxite reverse flotation. Ionic liquids are liquid substances composed of ions at relatively low temperatures (generally lower than 100 …
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The Impact of Backwater Iron Ions on Bauxite Flotation
The effect of iron ions in backwater on the flotation of diaspore bauxite was investigated by ICP measurement, micro-flotation tests, zeta potential measurements …
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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 …
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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
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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 …
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Leaching Behaviors of Lithium-Rich Bauxite Flotation
This study proposed a green and effective lithium extraction process employing sodium bicarbonate solutions to leach lithium-rich bauxite flotation tailings. 91.75% of lithium could be leached ...
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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 …
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