Selective adsorption of an eco-friendly and efficient …
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 ...
Simultaneous flotation separation of quartz 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 …
Flotation Separation of Dolomite from …
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 …
Effect and mechanism of dolomite with different size …
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.
Effect of SO42- and PO43- on flotation and surface …
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.
Simultaneous flotation separation of quartz and dolomite …
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 ...
Testing of New Collectors for Concentration of Fluorite by Flotation …
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 …
Hydration of magnesite and dolomite minerals: new insights from …
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 ...
Dolomite flotation of high magnesium phosphate ores …
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, …
Coarse particle flotation: A review
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.
Influence of Sodium Phosphate Salts with Different …
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 ...
Article Flotation Separation of Dolomite from …
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 …
Selective flotation of calcite and dolomite from apatite …
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 ...
Elimination of the Adverse Effect of Calcium Ion on the Flotation …
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 ...
Flotation Separation of Magnesite from Dolomite Using …
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
Review of the Main Factors Affecting the Flotation of Phosphate …
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.
Insight into the inhibition mechanism of carboxymethyl …
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 …
The enhanced flotation separation of magnesite and dolomite …
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 ...
Selective flotation of calcite and dolomite from apatite using …
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 …
Selective flotation separation of bastnaesite from dolomite …
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 ...
Modification of selectivity in the flotation separation of …
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 ...
Fine particle flotation for Florida dolomitic phosphate …
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.
Flotation separation of magnesite from dolomite with …
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 ...
Selective depression by using environment-friendly …
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 ...
Flotation studies of monazite and dolomite
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-apatite separation by amphoteric collector in …
It utilizes the micro-organisms to replace or to interact with the chemical reagents to increase the gap between surface properties of similar minerals and to enhance the separation …
Mechanism of calcium lignosulfonate in apatite and …
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 …
The Effect of Oleic Acid Emulsification using SPE on Fluorite …
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 ...
Effective flotation separation of apatite from dolomite …
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 utilization of tamarind seed gum as a novel dolomite …
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 ...