flotation reagents for ilmenite are systematically summar-ized. This work also provides guidelines for selecting a suit-able reagent system and developing new potential reagents for ilmenite flotation. 2. Surface properties and solubility of ilmenite Flotation is a complicated physicochemical process, and
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— How much Flotation Depressants is needed. Depressants are generally added to the grinding circuit or conditioner usually before addition of promoting and frothing reagents.They may also be added direct to the …
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— The Panxi area, which holds the largest ilmenite reserves in China, has successfully initiated large-scale production and established a relatively comprehensive …
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— Ilmenite is an essential mineral for the extraction of titanium. Conventional physical separation methods have difficulty recovering fine ilmenite, and dressing plants have begun applying flotation to recover ilmenite. The interaction of reagent groups with Ti and Fe sites on the ilmenite surface dramatically influences the ilmenite flotation. …
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— Ilmenite flotation showed a similar trend using collector SPA, in which the peak recovery (90.46%) was achieved using 200 mg/L SPA. ... Different placing forms of reagent on the (104) ilmenite surface were tested to determine the most stable configuration based on the smallest adsorption energy, the result of which is shown in Fig. 12. Note ...
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Ilmenite is an essential mineral for the extraction of titanium. Conventional physical separation methods have difficulty recovering fine ilmenite, and dressing plants have begun applying flotation to recover ilmenite. The interaction of reagent groups with Ti and Fe sites on the ilmenite surface dramatically influences the ilmenite flotation. However, the …
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— The flotation behavior of ilmenite and titanaugite using anionic collector sodium oleate (NaOL), cationic collector dodecylamine acetate (DAA) and the mixed anionic/cationic collector (NaOL-DAA ...
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— In ilmenite flotation, Song and Tsai have used the acidified sodium silicate with sulfuric acid to replace sodium fluorosilicate, ... Reagents. In the micro-flotation tests, the acidified water glass (AWG) is a mixture of oxalic acid and …
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— Collector as one of the flotation reagents is a chemical substance added to flotation system for imparting the hydrophobicity. They render the mineral surfaces hydrophobic through adsorption process. ... The highest flotation separation performance (ilmenite recovery, 95.2% vs. titanaugite recovery, 12.6%) in the system was achieved at …
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— The flotation water pre-treated in a strong magnetic field was studied to improve the floatability of the ilmenite. Zeta potential measurements, adsorption tests, atomic force microscopy (AFM), Fourier transform infrared (FTIR) spectroscopy, and Raman spectroscopy were carried out to reveal the improvement mechanism.
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Vanadium titanomagnetite (VTM) is an important mineral for developing titanium resources, but the comprehensive recovery of ilmenite separation is extremely poor, resulting in the low-efficiency utilization of titanium …
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— Since the current flotation reagents are not effective enough for the flotation of rutile minerals, either the hard rocks or sand deposits, there is ongoing investigation on some of new collectors/surfactants. ... Flotation of ilmenite using benzyl arsonic acid and acidified sodium silicate. Int. J. Miner. Process., 26 (1–2) (1989), pp. 111-121.
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— The interaction energy of the reagent on the mineral surface was calculated using molecular dynamics simulations, the results of which confirmed that an appropriate O-O distance in ilmenite and NaTNA was conducive to adsorption and enhanced the flotation performance of ilmenite. Thus, a novel and promising reagent with a superior flotation ...
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— In a weakly acidic environment, Fenton's reagent significantly improves the flotation recovery of ilmenite, and it increases by 34.4%. After adding Fenton's reagent and NaOL to ilmenite, its surface potential is more negative than that of. CRediT authorship contribution statement
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— Thus, the ultrasonic pre-treatment helps significantly improve the ilmenite flotation and reduce reagent consumption. 3.2. Zeta potential analysis. Fig. 7 shows the zeta potentials of the raw and ultrasonically treated ilmenite as a function of the pH in the absence and presence of NaOL. The iso-electric point ...
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— Flotation reagents such as collectors and inhibitors can be selectively adsorbed onto mineral surfaces, to increase the differences in surface hydrophobicity [6], [7]. But, in the industrial separation processes, the ilmenite and gangue minerals in the froth product (such as the rougher flotation concentrate) present small differences in ...
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— Semantic Scholar extracted view of "A review of mineral processing of ilmenite by flotation" by Ji-hua Zhai et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 221,086,389 papers from all fields of science ... Reagent types and action mechanisms in ilmenite flotation: A review.
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— The effect of the concentration of collector on the flotation response of ilmenite below a pH of 7 is shown in Fig. 3 b. When the initial concentration of DPA was greater than 200 mg·L −1, the flotation recoveries of ilmenite increased rather slowly, and the recovery of ilmenite reached 86.07% at a concentration of 300 mg·L −1 DPA.
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— The crystal chemistry, surface properties and flotation behavior of three ilmenite samples: IL-F (purchased from the mineral dealership of A. and F. Krantz), IL-Q (Qara-aghaj deposit, Iran) and IL-K (Kahnuj deposit, Iran) were investigated. The substitution of different amounts of Mg, Mn and V in the crystal structure of ilmenite was …
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Employing a mixed collector of NaOL/OHA (3:1) can decrease the amount of reagent required in the ilmenite flotation process, and more than 95 % ilmenite recovery can be obtained. 2. Adsorption capacity and zeta potential measurements showed that OHA and NaOL alone were adsorbed onto the surface of ilmenite. However, the adsorption of …
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— Froth flotation, the main process for separating ilmenite, depends heavily on the performance of flotation reagents. Herein octyl hydroxamic acid (OHA) and lead nitrate served as collector and activator were introduced into the ilmenite-titanaugite flotation system. ... It seems that the lead ions are active components in the flotation of ...
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— These issues can lead to the irrationality in the use of flotation reagents containing the increase of reagent dosage and the low separation efficiency of ilmenite ore (Zhu, 2011, Chai et al., 2021, Yan, 2010, Wei, 2009, Hu, 2014). Thus, how to rationally utilize the flotation reagents based on their interaction mechanism is the key step in the ...
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— The micro-flotation experiments were conducted as a function of pH, and the results are shown in Fig. 2.In these tests, the concentrations of Fenton's reagent and NaOL were 1 × 10 −4 and 1.75 × 10 −4 mol/L, respectively. When the pH value was 5–10, the recovery rate of Fenton-activated ilmenite was clearly higher than that of unactivated …
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— The change in ilmenite flotation recovery can be verified using the amount of flotation reagents adsorbed on the mineral surface [40]. Fig. 6 shows the adsorption amount of BHA on ilmenite as a function of BHA concentrate in the absence and presence of FC in the collector system.
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— During ilmenite flotation, reagents added to modify the hydrophobicity of minerals in the system are of critical importance. In principle, desulfurization is required to decrease the sulfur content in final ilmenite concentrate (required S grade <0.2% in …
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— Combining the lead ion (Pb2+) and the benzyl hydroxamic acid (BHA) into a Pb—BHA complex has a marked effect on ilmenite flotation, which puts forward a new …
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— Combined collector of different reagents is widely used in mineral flotation, while the synergistic effect mechanism remains in dispute. In this study, two anionic collectors of sodium oleate (NaOl) and styrene phosphonic acid (SPA) were applied in ilmenite flotation. Microflotation experiments showed that NaOl had a stronger collection …
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— Figure 2A illustrates the solution chemistry of ilmenite with regards to pH. It can be observed that when the pH value is less than 3, the majority of ferrous ions are …
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This condition benefits ilmenite flotation, especially at pH 6.0–8.0. The obtained zeta potential measurements indicate that, in the optimum pH range for ilmenite flotation, the main species adsorbed on ilmenite are Pb(OH)+ and Pb2+ .
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— The micro-flotation performance found that OAHD realized an efficient flotation of ilmenite under low concentration of 1.0 × 10 −5 mol/L under around pH 8.0, and the flotation recovery rate of ilmenite reached about 94.2%, which was about 35.8% higher than that of NaOL. The morphology of ilmenite observed by AFM probed the self …
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