0086-21-58386256
The micro-flotation tests were conducted in a 30-mL cell of an XFG series laboratory flotation machine. A hematite sample or mixtures of hematite with dolomite or siderite (2 g) were placed in the cell, to which 20 mL of distilled water was added. The pulp was stirred for 1 min at a rotating speed of 1750 r/min before the HCl or NaOH solution was
In this paper, Na 2 ATP was first applied as a depressant in the flotation separation of magnesite and dolomite with sodium oleate. The significant influence of Na 2 ATP on the flotation behavior of magnesite and dolomite was investigated via flotation tests. The selective adsorption behavior of Na 2 ATP on different mineral surfaces was …
As a commonly non-metallic element, phosphorus plays a pivotal role in living cells and is widely used in agriculture and medicine engineering (Feng et al., 2022, ... Fig. 4 shows the effect of pH on apatite and dolomite flotation recovery with respect to the pulp pH at 7.5 × 10 −5 mol/L NaOL in the absence and presence of pectin. In the ...
After ultrasonic treatment, magnesite and dolomite achieved flotation recovery of 93.41% and 25.12%, respectively, with a float difference of 68.29%. ... Single-mineral flotation tests were performed in a 30-mL XFG hanging-cell flotation machine (rotating speed = 1992 r/min). Deionized water (20 mL) was added to each test sample. ...
The Effect of Oleic Acid Emulsification using SPE on Fluorite and Dolomite Flotation ** ... 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 35 mL of DI water and the pulp was conditioned for 1 min. A desired pH ...
Simultaneous ultrasonic treatment and flotation improved the flotation separation efficiency of magnesite and dolomite, with the flotation recovery of magnesite concentrate reaching 91.06%. ... treatment (UST). In the test, the ultrasonic frequency was fixed at 40 kHz. Minerals (3 g) were added to a 70 mL flotation cell, and 60 mL of …
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 …
flotation cell with impeller speed of 1500 r/min. A 2.0 g sample composed of dolomite and hematite in different proportions In conclusion, the results above indicate that by mass according to test design was mixed with 25 mL distilled water in flotation cell for 1dolomite with different size fractions has strong negative min.
The separation of magnesite and dolomite has always been a difficult problem in flotation production, one of the reasons is that the dissolved Ca 2+ ions from dolomite weaken the anionic flotation selectivity. In this study, an ion-tolerance collector, sodium fatty alcohol polyoxyethylene ether sulfonate (AESNa), was used to weaken or …
Based on the single mineral flotation results, micro-flotation separation of artificially mixed minerals (3.0 g magnesite and 3.0 g dolomite) was conducted. The flotation results are shown in Fig. 5 and Table 3. Fig. 5 shows that the recovery of magnesite increased from 43.32% to 89.72% as the concentration of α-COA increased, …
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 involved in dolomite flotation are still not fully understood. Herein, the correlation of Fe2+ conversion with xanthate adsorption and dolomite flotation was …
Dolomite, a prominent calcium-bearing gangue mineral found in carbonate-type zinc oxide ores, poses a significant challenge for effective flotation separation …
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.
Amino-acid-based surfactants are promising collectors for the flotation of calcium-bearing minerals. In this study, N-hexadecanoylglycine (C16Gly) was used as a collector in the flotation system of fluorapatite (FA) and dolomite.Microflotation tests using single minerals implied that C16Gly could be applied as an efficient collector for FA over …
1. Introduction. In phosphate ore dressing, the removal of magnesium element represented by dolomite and silicon element represented by quartz is the key step to obtain qualified quality phosphorus concentrate [28].A fatty acid anion collector combined with a phosphate depressant can be used to remove dolomite from phosphate rock [4], [28], …
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 …
The flotation separation of dolomite and fluorapatite is difficult due to the similar surface properties. In this study, carboxymethyl cellulose (CMC) was introduced …
A selective dolomite flotation process has recently been developed at the University of Florida whereby a two stage conditioning technique is utilized to remove …
Flotation of Dolomite from Apatite Yanfei Chen, Qiming Feng, Guofan Zhang *, Dezhi Liu and Runzhe Liu ... 2.0 g of pure mineral was placed in the flotation cell with 35 mL deionized water and then conditioned for 1 min. NaPP and NaOL were successively added and stirred for 3 min, respectively.
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
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 ...
2.9.2. DFT simulation. DFT is extensively employed to analyze the chemical reaction mechanisms between flotation reagents and mineral surfaces, thereby enhancing the efficiency and selectivity of the flotation process [30], [31].The optimization of geometry and calculation of energy for the dolomite crystal and its adsorption system were …
The volume of the flotation cell is approximately 40 mL. Mineral sample weighed 2.0 g was loaded to the flotation cell. ... To improve the dolomite flotation by using the mixed collector, the molar ratio of butanol, isobutanol, octanol, and isooctanol could be controlled in the range of 0–59% (point e), 0–61% (point f), 0–75% (point g ...
Enhancing selective calcite and dolomite flotation in the phosphate ores: Investigation, modeling, and automated mineralogy assessment. ... Flotation tests were conducted at room temperature, using a laboratory flotation machine with a 1.25 L cell. A 14% suspension, prepared with tap water, was conditioned for 3 min. ...
A reverse flotation process for removing alkaline earth metal carbonate impurities particularly dolomite and calcite as the cell overflow from a flotation feed reagentized with water, a carbonate collector, a phosphate depressant and a pH regulator to about 20-30% solids and a pH of about 5.5-6.0. The phosphate concentrate is collected as the cell …
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. ...
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 …
Flotation experiments were carried out in a 30 mL flotation cell by adding into 2.0 g minerals samples and 30 ml deionized water. Flotation cell was suspended on laboratory XFG self-aeration flotation machine (Jilin Exploration Machinery Plant, China) operating at 1620 r/min. NaOH and HCl were prepared for adjusting the slurry pH.
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 ...
The micro-flotation tests of magnesite and dolomite were carried out in an XFG II type flotation cell with a 40 mL detachable cell and a stirring speed of 1600 …