@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}, …

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 …

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, …

The effect of iron ions in backwater on the flotation of diaspore bauxite was investigated by ICP measurement, micro-flotation tests, zeta potential measurements …

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 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 ...

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 ...

The essence of diasporic bauxite desilication is the separation of diaspore and aluminosilicate minerals, and froth flotation has been confirmed as a low …

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, …

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 …

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 ...

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 …

Therefore, diasporic bauxite ores (Al/Si < 6) have to be upgraded by pretreatment methods to meet the required quality for the Bayer process. Flotation separation (direct or reverse) followed by flocculation as an efficient pretreatment method …

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.

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

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 …

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 ...

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 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 …

This flotation was carried out in two steps: the first step was the flotation of gibbsite/kaolinite from quartz at pH 2, using alkyl sulfates as collectors; the second step was the flotation of kaolinite from gibbsite, using amines at pH 8. Liu et al., 2007, Wang et al., 2004, Xu et al., 2004 related the viability of increasing the Al 2 O 3 ...

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.

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 …

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 …

There are other metallic ions, organic regents, and superfine minerals existing in the backwater in addition to Al 3+ ions, …

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 …

This paper systematically investigated the leaching behavior of bauxite lithium-rich beneficiation tailings in caustic solution, together with their phase and morphological changes. The main chemical compositions (mass percent) of bauxite flotation tailings were 40.56% Al2O3, 34.00% SiO2, 4.34% K2O, 3.31% TiO2, 1.83% …

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 …

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 ...

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. ...

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 …

Closed-circuit flotation tests showed that reverse flotation de-silicating can be achieved by a new reagent scheme (DTAL, SFL and MIBC) to obtain a bauxite concentrate (A/S > 10, Al2O3 recovery ...

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 …

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 ...

The micro-flotation tests results suggested that Bi 3+ ions could improve the flotation recovery of rutile from 61% to 90%, and from 61% to 64% for Pb 2+ ions. View Show abstract

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 …