Therefore, TSG selectively restrained the flotation of dolomite, achieving the separation. Furthermore, the XPS results uncovered that the Ca and Mg of dolomite were the main active sites that react with TSG. ... 2.0 g mineral sample and 25 mL DI water were mixed into the flotation cell to form the pulp, and the subsequent conditioning method ...
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The dolomite or FA sample was conditioned with H 2 SO 4 solution for 3 min in the flotation cell, after which the desired amount of oleate was added into the flotation cell. The condition time for the collector was also …
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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 …
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Subsequently, 600 g/t collector was introduced in the flotation cell and conditioned for 3 min. Preliminary tests were conducted to optimize and ultimately select the appropriate reagents dosage. ... Moreover, dolomite flotation appeared to be far more successful than calcite. The highest dolomite recovery was of about 98.17 %, leading to an SE ...
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The flotation cell volume is approximately 170 mL, made of glass, and comprised of three parts - the lower part has a silicate frit at the bottom; the extensor part connects the lower part and the upper part, and the upper part is where the floated fractions can be collected. ... In order to understand the behavior of monazite and dolomite ...
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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 …
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no significant difference between the flotation cell and the ambient temperature, the temperature of cell did not change significantly during the experiment. The temperature of the flotation cells was ... recovery of dolomite flotation increased from 35.10% to 69.30%. Thus, the recoveries of the two minerals increase linearly with increasing pH ...
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The flotation behavior of collophane and dolomite as single minerals using oleic acid as a collector and cellulase enzyme as the phosphate depressant was investigated in details.
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Froth flotation is widely used as an effective method for separating apatite from dolomite. However, it is of difficulty to realize the efficient separation of apatite and dolomite using the ...
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The tests were carried out using a dolomite sample in a bench flotation cell with automatic froth remover. Zeta potential measurements, solution conductivity and FTIR analysis were done to support ...
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Activation of Dolomite Flotation by Ferrous Hydroxide and Carbonate Haiping Zhao 1,2,3, Xiaopeng Niu 1,2, Bingxu Dong 4, ... collected pulp was transferred to the 0.5 L cell, and the suspension conditioned with FeSO4 for 10 min, followed by treating with 10−3 M sodium butyl xanthate (SBX) for 10 min (The
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Dolomite is a common carbonate mineral that can release CO2 gas under acidic conditions. The formation of bubbles on the dolomite surface might play a critical role in the flotation ...
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The overall aim is to control the selectivity and recovery of the process. The following review is an attempt to add to previous works gathering phosphate froth flotation data. In that sense, the relevant parameters of phosphate ores flotation are discussed while focusing on apatite, calcite, dolomite, and quartz as main constituent minerals.
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Abstract: The major problem with Carlin-type gold deposit flotation is that the high dolomite content in the concentrate decreases the quality of gold. Further, the activation mechanisms …
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An XFG-type flotation machine with an impeller speed of 1700 rpm (Changchun, China) and a Plexiglas cell with an effective volume of 40 mL was employed for flotation testing. 2.0 g of pure magnesite or dolomite was used for single mineral flotation experiments. 1.0 g magnesite and 1.0 g dolomite were well mixed and used for artificial mixed ...
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The effects of flotation behaviors of magnesite and dolomite were investigated by flotation experiments, and the mineral wettability was characterized by contact angle testing. …
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tank flotation cell and 2-in ID packed flotation column aiming at achieving a phosphate concentrate containing more than 30% P. 2. O. 5. and less than 1.0% MgO contents at high P. 2. O. 5. recovery. The characteristics of fatty acid collector, FA-12 and a newly developed PA-31 collector were evaluated for frothability and dolomite flotation rate.
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Then, 3 drops of 10 mg/mL F150 frother was added before air at a flowrate of 40 mL/min was bubbled through the cell. Flotation was conducted for 1 ... The trend for dolomite flotation with Flotinor 1682 (organic phosphoric acid) can also be explained by the speciation of dolomite and the mechanism of collector adsorption. ...
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The flotation results demonstrate that SDBS could float both fluorapatite and dolomite, but show a higher affinity towards fluorapatite instead of dolomite. Moreover, SDBS could preferred adsorb onto fluorapatite surface …
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The single mineral flotation test was performed in the XFGCII flotation machine (Jilin Exploration Machinery Factory, China), and the impeller speed of the flotation machine was 1992 r/min. Firstly, 2.0 g of dolomite sample and 40 mL of different concentrations of SO 4 2-or PO 4 3-solutions were added in the cell.
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In the conventional flotation cell, the detachment of particles from the bubbles due to turbulence is the main reason for the decline in the coarse particle recovery (De et al., 2007, Fuerstenau et al., 2007).However, turbulence is imperative in the flotation cell to bring about bubble particle collision, keep particles in suspension, and disperse air flow into fine bubbles.
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Plant, Changchun, China), using a 40 mL cell volume. In total, 2.0 g ground ore sample with deionized water was placed into the flotation cell and then agitated under the speed of 2000 r/min for 1 ...
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The FA or dolomite (2.0 g) was conditioned with H 2 SO 4 (1 × 10 −3 mol/L), collector, and frother in a 40-mL flotation cell. The conditioning times for H 2 SO 4 and the collector were 3 min, …
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The micro—flotation experiments were conducted by an XFG-II flotation machine with a 50 mL flotation cell and an impeller speed of 2000 rpm. The flotation sheet of the single minerals and artificially mixed minerals (Bastnaesite: dolomite=2:1) are presented in Fig. 3 a and b. Firstly, 2.0 g dolomite/bastnaesite sample was added in the ...
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Nonetheless, the efficient flotation of carbonate-rich phosphate ores is daunting and beneficiation frailties are usually expected, if not encountered (Yang et al., 2021a).Challenges mainly arise from the altered crystalline structure of apatite, characterized with a highly CO 3 2− substituted lattice. Complications might also steam from the presence of multiple gangue …
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The separation of dolomite from apatite has been recognized as one of the most difficult subjects in mineral processing due to the similarities in their physiochemical properties. In this study, selective surfactants were used with a fatty acid soap collector to improve the flotation performance of separating dolomite from high magnesium phosphate ores.;Three surfactants, …
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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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Micro flotation tests were conducted in a XFGC flotation machine (Jilin Exploration Machinery Plant, China) with a 40 mL cell. 2.0 g of samples were weighed and placed in the flotation cell, 40 mL of deionized water was added and stirred for 1 min, then 0.1 mol·L −1 H 2 SO 4 or H 3 PO 4 solution was added to adjust the pH value of the pulp ...
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flotation cell with 40 mL of deionized water. NaOH or HCl was first added to adjust the pH value of the mineral suspensions. The depressant and collector were added in sequence and agitated for 3 min each. Each flotation time was also 3 min. Froth products and tailings were collected, filtered, dried, and weighed to calculate the flotation recovery
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This paper presents a comprehensive study on the selective flotation of a multi calcium-bearing minerals ore, focusing on the efficient removal of dolomite and calcite impurities from a carbonaceous sedimentary phosphate ore.
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