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 ...
The unit cell parameters determined experimentally [58] were used to build initial primitive cells of magnesite and dolomite, which both exhibit a trigonal structure of the R 3 ̅ c space group. The full optimization of the cells led to structural parameters of a = b = 4.66 Å, c = 14.93 Å and a = b = 4.83 Å, c = 15.82 Å (α = 90°, β = 90 ...
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 …
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 …
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.
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 ...
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.
The separation of magnesite from dolomite was studied by flotation tests, X-ray photoelectron spectroscopy (XPS), and zeta potential measurements in the presence of calcium ion (Ca²⁺) dissolved ...
In this study, sodium dodecyl benzene sulfonate (SDBS), a low‐cost and freely soluble reagent under low temperature was used to examine its collecting ability and selectivity in a …
The flotation tests were conducted using XFG machine (manufactured by Wuhan Exploration Machinery Cooperation) in 70 mL flotation cell. The sample was a mixture of dolomite and apatite with the weight ratio of 1:4. Two grams samples were added into 50 mL ultrapure water and sonicated for 2 min.
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 ...
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.
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 contact angle …
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 ...
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
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 ...
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, …
Flotation tests conducted on a sedimentary phosphate ore have affirmed the applicability of the castor oil derived collector in calcite and dolomite flotation (in the presence …
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 ...
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 ...
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 studied through adsorption …
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 …
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 ...
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], while …
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, …
Each flotation line in the acid circuit is having 12 flotation cells of 9 m3. The pulp density is maintained at 1.3 before it enters the flotation circuit and soap solution is added at 3 points in ...
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.
In general, during apatite flotation, dolomite especially fines easily enters into apatite concentrates through attachment to bubbles or entrainment, ... In fact, the crystal structure of dolomite belongs to the R-3 space group and consists of the cell parameters a = b = 4.8064 Å, c = 16.0060 Å, and α = β = 90°, γ ...
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 ...
ference in recovery between dolomite and apatite indicates that calcium lignosulfonate can separate dolomite and apatite. Flotation separation test of artificial mixed ore of dolo-mite …
A 1 g sample and 20 mL of deionized water were placed in the flotation cell. The slurry was adjusted to pH 11.0 using sodium hydroxide and then conditioned with reagents. ... NaOL appears to cause a significant difference in the recovery of magnesite and dolomite. Flotation of 77.80 % and 5.39 % of the magnesite and dolomite is obtained at pH ...
In this study, two new collectors for fluorite flotation DP-OMC-1033 (DP-I) and DP-OMC-1234 (DP-II) were tested and compared with oleic acid (OA), sodium oleate (SO) and potassium oleate (PO). According to fluorite grade and fluorite metallurgical recovery, the effect of each collector was determined, both in mechanical and pneumatic cell flotation. The effect of …
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. ...