Recently, the influence of metal ions on the surface properties of minerals has been studied extensively in the flotation field [11–14]. Liu et al. [15] showed that Fe3+ in the pyrite slurry would react with phytic acid to produce water-insoluble metal salts on the mineral surface, improving the hydrophilicity of pyrite and dolomite.
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dolomite is higher than that of apatite, which is due to the strong reaction between calcium lignosulfonate and the Ca sites on dolomite. In addi-tion, there is a hydrogen bond between calcium lignosulfonate and dolomite, which further prevents the adsorption of sodium oleate to dolo-mite, thus greatly inhibiting the flotation of dolomite.
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The flotation performance of apatite and dolomite was investigated to ensure the optimal pH value and NaOl concentration for apatite, the flotation results present in Fig. 3, as exhibited in Fig. 3 (a), in the presence of 1 × 10 −4 mol/L NaOl, the apatite flotation recovery rose with the increasing pH, and it remained nearly constant …
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Micro-flotation results indicated that the addition of P (AA-AMPS) could achieve the efficient separation of apatite from dolomite at pH 8.5 by selectively depressing the dolomite flotation, in ...
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The flotation separation of dolomite and fluorapatite is difficult due to the similar surface properties. In this study, carboxymethyl cellulose (CMC) was introduced as a depressant for flotation of dolomite and fluorapatite, the adsorption mechanism of CMC on the mineral surfaces was clarified by DFT calculations, XPS analysis, zeta potential and …
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Direct flotation of dolomite can be achieved by using different collectors (Table 3) [12,32,41]. ... equipment design and development, instrumentation and control, sulfides and precious metals ...
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Flotation separation of magnesite and its calcium-containing carbonate minerals is a difficult problem. Recently, new regulators have been proposed for magnesite flotation decalcification, although traditional regulators such as tannin, water glass, sodium carbonate, and sodium hexametaphosphate are more widely used in industry. However, …
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Herein, the flotation separation of dolomite and brucite was performed using tetrasodium hydroxyethylphosphate (TH) as the inhibitor. Microflotation tests show that for a sodium dodecyl sulfonate (SDS) concentration of 30 mg/L, 100 mg/L of TH can achieve the maximum flotation separation of 73.91% between brucite and dolomite. Moreover, the …
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The aim is to explore new depressants for achieving the efficient separation of apatite and dolomite. In this work, fucoidan (FD) was examined as an eco-friendly dolomite depressant to separate dolomite from apatite. The depression ability and adsorption mechanisms were investigated. The flotation results indicated that FD …
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DOI: 10.1007/s12613-023-2708-4 Corpus ID: 268949464; Role of tannin pretreatment in flotation separation of magnesite and dolomite @article{Gong2024RoleOT, title={Role of tannin pretreatment in flotation separation of magnesite and dolomite}, author={Xiufeng Gong and Jin Yao and Jun Guo and Bin Yang and Haoran Sun and Wanzhong Yin and …
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Micro-flotation results indicated that the addition of P (AA-AMPS) could achieve the efficient separation of apatite from dolomite at pH 8.5 by selectively depressing the dolomite flotation, in ...
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The micro-flotation of dolomite and magnesite was carried out in a laboratory flotation device (mechanical agitation) with a 30-mL detachable cell and a stirring speed of 1992 rpm. ... (JC2000, Shanghai Zhongchen Digital Technology Equipment Co., Ltd., China) based on a sessile drop technique. Prior to the detection, …
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This study combines flotation experiments and ab initio simulations to improve the anionic flotation of fluorapatite from Florida waste clay (FWC) by investigating the depressing effects of sodium silicate and citric acid, in presence of sodium oleate (NaOl), on dolomite, quartz, and fluorapatite. First, we show that the order of natural …
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The flotation results indicated that, when sodium oleate (NaOl) was used as the collector, HEDP displayed an outstanding depression effect on the dolomite flotation, whereas it had only a slight ...
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【Process Introduction】 Dolomite mining process is the solution of separating dolomite concentrate from Dolomite raw ore. Based on mosaic structure of the Dolomite mine and years of mining process experiences, …
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This collector is utilised in the flotation separation of apatite from its associated carbonate gangue minerals, dolomite and calcite. Flotation experiments reveal that the application of 2-Cl-9-ODA collector, in conjunction with sodium pyrophosphate (NaPP) inhibitor, facilitates the effective separation of these three minerals.
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When SPE-emulsified OA was used as collector, the flotation recovery of dolomite was decreased slightly compared with Figure 5. Effect of pH on the flotation behavior of fluorite and dolomite. Figure 6. Effect of the mass ratio of OA and SPE on the flotation behavior of fluorite and dolomite at pH 9 0.2. M mistrył Research Article
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However, the high usage of H 2 SO 4 and H 3 PO 4 will corrode equipment and produce large amounts of acidic wastewater. In addition, the formation of CaSO 4 and Ca 3 (PO 4) 2 ... This may be the reason for decreased dolomite flotation recovery in certain degree during the flotation experiments. It is noteworthy to indicate that the …
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Welcome to the ultimate guide to dolomite processing equipment. Dolomite, a versatile and widely used mineral, requires specialized equipment for efficient …
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The Effect of Oleic Acid Emulsification using SPE on Fluorite and Dolomite Flotation ** ... (Figure 3) from Rock Grinding Equipment Manufacturing Co. Ltd., Wuhan, China with a 40 mL plexiglass cell at an impeller speed of 1800 rpm. In single mineral flotation experiments, 2 g single mineral samples were added into the flotation cell containing ...
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The synergistic effect of sodium dodecyl benzene sulfonate (SDBS) on the flotation separation of magnesite and dolomite using sodium oleate (NaOL) as a collector has been studied through flotation experiments, zeta potential measurements, contact angle measurements, Fourier transformation infrared spectroscopy analysis (FT-IR), …
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Flotation of Dolomite from Apatite Yanfei Chen, Qiming Feng, Guofan Zhang *, Dezhi Liu and Runzhe Liu ... 4 will lead to the corrosion of flotation equipment, and the production of acidic wastewater.
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Description. Dolomite is a calcium magnesium carbonate mineral that has many characteristics similar to calcite. In places where access to limestone is not available or more costly, dolomites are used …
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Dolomite cannot be efficiently separated from fluorapatite (FA) by oleic acid in an acidic slurry, due to the poor collecting ability of oleic acid. I…
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the flotation recovery of dolomite dropped dramatically to 9.95%, and the recovery of apatite remained at about 88.27% at pH 10. Both dolomite and apatite have calcium ion …
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speed of 1800 rpm, Figure 2 presents the schematic of XFG‐II flotation machine [11,12]. As for the single mineral flotation, the procedure was described as follows: firstly, 2 g of flu‐ orapatite/dolomite was added in the flotation cell with 50 mL pure water, and then stirred 2 min for dispersion.
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Sulfation improved the flotation capacity of oleic acid for dolomite at pH 4.5. • The H 2 SO 4 sulfation added one SO 4 H group into the molecule of oleic acid.. …
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In this study, compared with flotation of dolomite, a collector mixture of OA and SPE (styrylphenol polyoxyethylene ether) demonstrated significantly better performances for the fluorite. An optimal mass ratio 4 : 1 OA : SPE was found, and the recovery of fluorite was increased from over 85 % to more than 94 % compared with …
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Flotation feed material was conditioned at pH 10.0 with fatty acid followed by flotation of apatite and dolomite at pH 8. The float fraction was then reconditioned at …
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Additionally, 87.41% of fluorapatite was recovered in the froth concentrate while only 21.05% of dolomite was floated, indicating that PBTCA displayed a strong depression on the dolomite flotation, thereby improving the flotation selectivity in the dolomite-bearing fluorapatite ore flotation.
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The results indicated that the CBC adsorption quantity and intensity on the dolomite surface more than that on the apatite surface, which was due to CBC absorbed on apatite surface by hydrogen bonding, while absorbed on dolomite surface mainly through chemical chelating between Ca on the mineral surface and -COO- on the depressant.
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The surface of dolomite contains locating ions such as CO 3 2−, Mg 2+, and Ca 2+ [40], [50]. The primary factor behind the effective inhibition of dolomite flotation is the strong chelation of POCA with Ca 2+ sites. Examination of zeta potential and infrared spectra implied that the adsorption of POCA onto the smithsonite surface was mainly ...
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For artificial mixed minerals flotation experiments, the mass ratio of apatite and dolomite mineral was 1:1 for binary mixture. The flotation process was the same as single mineral tests. After the flotation process, the concentrates and tailings were assayed for P and Ca. The recovery of apatite was calculated based on P 2O
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Description Dolomite is a calcium magnesium carbonate mineral which has many characteristics similar to calcite. In places where access to limestone is not available or more costly, dolomites are used in its place for the basic materials from which most building stone and a significant percentage of crushed stone are produced.
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Flotation Separation of Quartz and Dolomite. Flotation separation is a widely used technique in mineral processing to separate minerals based on their hydrophobic or hydrophilic properties. The ...
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