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 …

Download scientific diagram | | Flotation recovery of diaspore and kaolinite with NaOl or TDM as collector (Collector dosage = 0.1 mM) as a function of pH. from publication: Flotation Separation ...

Recently, systematic research on kaolinite, a major aluminum-containing mineral in some Australian iron ores, has been conducted at CSIRO with the aim of providing an in-depth understanding of the flotation mechanism of kaolinite in iron ore flotation and a basis for the removal of kaolinite (Ma et al., 2009, Ma et al., 2010, Ma …

Fig. 3 shows the recovery of kaolinite and hematite, using the collector DTAB, as a function of pH considering the three concentrations tested. The results showed that the separation between kaolinite and hematite is possible in the full range of pH, just for the concentration of collector equal to 1 × 10 −4 mol/L. Zhao et al. (2007), using an …

In flotation separation, the systems of organic collector adsorption and the particle-liquid interphase are rather suitable for SCMs. Nevertheless, there are barely relevant researches in minerals processing field. ... In diaspore and kaolinite flotation pulp, the hydration results in the proton exchange reactions for the hydroxyl group ≡MOH ...

The flotation separation effects of kaolinite and quartz mixed minerals under different conditions were analyzed by calculating the characteristic parameters such as K, R∞, Km, SI and SE ...

The flotation separation effects of kaolinite and quartz mixed minerals under different conditions were analyzed by calculating the characteristic parameters such as K, R has little effect on the floatability of kaolinite but it does inhibit the floatability of quartz …

The performance of dodecanamide (DDAA) and cetyltrimethylammonium bromide (CTAB) used as the mixed collector on flotation separation of diaspore and kaolinite was investigated in this paper. The results of flotation experiments for single minerals showed that the kaolinite presented a good flotability but diaspore presented a …

The results of artificial mixed minerals showed that not only the mass ratio of Al2O3 to SiO2 (A/S) was remarkably increased but also the effective flotation separation of diaspore and kaolinite ...

Flotation can effectively separate diaspore and kaolinite, and improve A/S of this type of bauxite [ 3, 4 ]. In recent years, many novel surfactants have been used in the direct flotation sep-

In this study, the flotation behavior of both kyanite and quartz and their separation were studied at acidic pH in the presence of sodium petroleum sulfonate. FeCl 3 was added to introduce Fe 3+ ions to activate quartz and kyanite. Sodium silicate was used as a depressant to achieve the separation of kyanite from quartz in the presence of Fe …

The effect of cationic groups on performance of 12-carbon chain collectors in flotation separation of diaspore from kaolinite, pyrophyllite and illite has been investigated by flotation tests and ...

Frontiers | Flotation Separation of Diaspore and Kaolinite ... Unlike diaspore, the recovery of kaolinite gradually increases from a minimum of 3.5% at pH 2 to a maximum of 13.8% at pH 11 and decreases with the increase until pH equals 12. Therefore, the optimal pH for the flotation separation of diaspore from kaolinite with mixed collector is 9.

Process for the selective separation of kaolinite and feldspar by flotation in aqueous pulp, wherein flotation is carried out at the pH-value of the pulp which is naturally obtained during suspension of the mixture of minerals in water using water-soluble salts with trivalent metal ions as activators and depressors, in the presence of cationic and/or anionic surfactants …

The influences of particle size on the flotation separation of kaolinite and quartz was explored by flotation tests of full-size and various sizes, zeta potential analysis. The flotation separation effects of kaolinite and quartz mixed minerals under different conditions were analyzed by calculating the characteristic parameters such as K, R ∞, …

When the ratios were 24:1, 15:1, 9:1 and 4:1, the flotation separation effect of diaspore and kaolinite was better. When the ratio was 4:1, the dosage of BHA was large. Therefore, the ratios of 24:1, 15:1 and 9:1 were selected to further investigate the optimal ratio of mixed NaOL/BHA collector.

Flotation Separation of Diaspore and Kaolinite by Using a Mixed Collector of Sodium Oleate-Tert Dodecyl Mercaptan by Xiaofei Man, Leming Ou, ... Effect of Sodium Oleate Concentration Variations on Froth Flotation of Manganese Ore International Journal of Nonferrous Metallurgy. 2019 English. Ion Flotation of La3+, Cd2+, and Cs+ Using ...

It is widely acknowledged that clay minerals have detrimental effects on the process of flotation, but the mechanisms involved are still not fully understood. In this work, the effects of montmorillonite, kaolinite, and illite on pyrite flotation were investigated from the perspective of various structures of clay minerals. Flotation tests suggested that the …

In detailed, the recovery of kaolinite reduced by 20.01% and the aluminum–silicon ratio (A/S) increased by 9.42 in micro-flotation tests; the total recovery …

The flotation separation effects of kaolinite and quartz mixed minerals under different conditions were analyzed by calculating the characteristic parameters such as K, R∞, Km, SI and SE ...

In this study, kaolinite flotation using normal water and water containing pure nanobubbles (NBs) or amine coated NBs (CNBs) was investigated and the micro-flotation results showed that kaolinite floated the best when water containing CNBs was used. Rheology, settling and zeta potential tests, together with particle size distribution analyze …

Hu Y, Liu X, Xu Z (2003) Role of crystal structure in flotation separation of diaspore from kaolinite, pyrophyllite and illite. Miner. Eng. 16: 219–227. Google Scholar Xu Z, Plitt V, Liu Q (2004) Recent advances in reverse flotation of diasporic ores—a Chinese experience. Miner. Eng. 17:1007–1015. Google Scholar

Thermal modified Kaolinite as useful material for separation and preconcentration of trace amounts of manganese ions

From this study the recovery of MnO 2 by using froth flotation technique was (85.41%) achieved. The optimum time of flotation obtained for manganese is 9 minutes. At 9 minutes, the optimum variables obtained are collector dosage of 2.5 gm/ml of feed and frother 2 gm/ml, depressant 1.5 gm/ml and pH is 8. The frother dosage has shown …

When the mixed depressant SHMP/ H 3 Cit was used, the flotation recovery of scheelite and calcite reached 58.2% and 2.8% at an optimum molar ratio of 1:4, respectively, and the flotation separation could be achieved. Artificial mixed mineral experiment indicated that the mixed depressant can significantly improve the separation …

An attempt has been made in this paper to examine the effect of particle size on flotation parameters in the separation of diaspore and kaolinite.First of all, the basic properties such as zeta potential and contact angle and flotation behaviors of diaspore and kaolinite in sodium oleate (NaOL) and dodecylamine (DDA) solution were investigated. …

Section snippets Materials. The lepidolite ore used in flotation separation tests was got from Yichun Tantalum & Niobium Mine in China. The mineralogical analysis of the lepidolite ore shows that the main components of the ore were largely 27.83% lepidolite, 34.59% albite, 17.04% quartz, 7.15% sericite, 5.23% potassium feldspar, 5.06% …

The influences of particle size on the flotation separation of kaolinite and quartz was explored by flotation tests of full-size and various sizes, zeta potential analysis. The flotation separation effects of kaolinite and quartz mixed minerals under different conditions were analyzed by calculating the characteristic parameters such as K, R ...

Flotation responses of diaspore, kaolinite, pyrophyllite and illite as a function of pH using 0.2 mM an alkyl quarterly ammonium salt as collector. ... The flotation separation of the three-aluminosilicate minerals from diaspore may be accomplished by taking the advantage of the differences in the number and nature of broken Al–O bonds …

The ζ potentials of diaspore and kaolinite were measured with and without flotation collectors, respectively, to explain the combined collecting mechanism of NaOL …