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flotation routes for a phosphate ore bearing silicate-carbonate gangue. concentration of a phosphate ore bearing a silicate-carbonate gangue i bulk apatite and calcite flotation followed by calcite flotation in the presence of phosphoric and citric acids.
flotation routes for a phosphate ore bearing silicate-carbonate gangue. concentration of a phosphate ore bearing a silicate-carbonate gangue i bulk apatite and calcite flotation followed by calcite flotation in the presence of phosphoric and citric acids.Online Chat
Keywords calcite, dissolution, flotation, sodium oleate INTRODUCTION Phosphate rock beneficiation provides apatite concentrates that are mostly applied in fertilizer production. Carbonates such as calcite CaCO 3 and dolomite CaMgCO 3 are present as impurities in phosphate rock. The marketable phosphate concentrate must display P 2 O 5Online Chat
Calcite Carbonate phosphate ore from Santa Quit ria - CETEM Conditioning-40 - 50 solids Calcite flotation Flotation Apatite concentrate Air Sink Silicates CO 2 R P 2 O 5 77 33 P 2 O 5 Matiolo et al. 2015 Apatite flotation Collector Sulphosuccinate -pH 11 NaOH Corn starch depressant Collector Coconut soap -pH 5.8 CO 2 bubble ...Online Chat
Mar 19, 2017 In case pyrite is present and it is desirable to remove it, a xanthate is added to float the sulphides into the froth waste product. The loss of calcite in this product will be very low. Flotation reagents are added to the conditioner and the Sub-A Flotation Machine, keeping them out of the grinding and desliming sections.Online Chat
For flotation of phosphateapatite recovery was experienced. Atrac Berol 7 Flotation of iron ore The main objective of iron ore flotation is to upgrade the concentrate by removing silicates andor phosphorus-containing minerals. The use of silica flotation has increased in ... Flotation of calciteOnline Chat
Abstract. The flotation process currently considered for apatite concentration from the Santa Quit ria phosphate deposit Brazil, involves bulk flotation of apatite and calcite with anionic collector at pH10 followed by calcite flotation at pH5.5, adjusted with H 3 PO 4.Although this concept is efficient from the point of view of separation between apatite and calcite, the intensive use of ...Online Chat
Apr 02, 2021 So, at first step, phosphates samples was subjected to calcination and scrupping process. After scrupping and removing calcium and magnesium oxide, anionic and cationic flotation tests were done. By using a combination methods calcining, scrupping and flotation the grade and recovery of final concentrate reaches to 31 and 62 respectively.Online Chat
calcite have been studied through micro-flotation. The single mineral flotation tests show that LSC can depress calcite, but it has little effect on flotation. Flotation separation of a mixture of smithsonite smithsonite and calcite can be completed to obtain a zinc concentrate grade up to 33.85 Zn with a recovery of 70.06.Online Chat
The former patent teaches a two-stage anionic flotation process in which the bulk of the silica is removed as an underflow and the phosphate minerals and carbonates are removed as float in the first stage, and the phosphate minerals selectively depressed for removal as an underflow concentrate and the calcium and magnesium carbonates floated in the second stage the float from the first stage beingOnline Chat
The most widely industrial flotation process for the treatment of phosphate ores containing carbonate as gangue minerals, especially in China, Saudi Arabia, Morocco, use strong acids, such as H 3 PO 4 and H 2 SO 4 as apatite depressants, and the carbonate minerals especially calcite and dolomite are selectively floated with the use of fatty acids as collectors at pH between 5.5 - 6.0.Online Chat
Jul 01, 1975 The difficulty of obtaining higher phosphate grade and recovery can be overcome in two ways i by the removal of the carbonate by calcination after silica flotation by cationic reagents 22 , or ii by the use of anionic collectors in acid circuit 18 . 3.3 Natural phosphate ores 3.3.1 Adsorption isotherms The adsorption isotherms of CTAB on samples I, II and III are of Langmuir type Fig. 4,Online Chat
from the natural phosphate ore. The flotation experiments were carried out to apply this new process using the calcareous phosphate ore. Under the optimum flotation conditions, 0.04 cellulase and 0.5 mM oleic acid, a phosphate concentrate containing 0.89 MgO with a P 2 O 5 recovery of 75 was obtained from the phosphate ore containing 2.2 MgO.Online Chat
Froth flotation is considered as the most effective process for the beneficiation of the sedimentary phosphate ore, due to the high efficiency of removing silicate and carbonate gangue minerals 4,5.Reverse flotation is effective and is usually applied to remove carbonate gangues from phosphate ores with sulfuric acid, with phosphoric acid being used as a pH regulator and depressant 6,7.Online Chat
While some good separations have been achieved by removing silica from phosphates, and with fewer examples of calcite and dolomite from phosphate, the results are less positive when multiple impurities are present. ... Processing a flotation concentrate containing 31.7 P 2 O 5 resulted in a product of greater than 35 P 2 O 5 with a recovery ...Online Chat
27 2012 26-32 FLOTATION ROUTES FOR A PHOSPHATE ORE BEARING SILICATE-CARBONATE GANGUE Rodrigo O. Albuquerque1, Antonio E. C. Peres2, Jos A. Aquino1, Carlos A. Pereira3 1 CDTNCNEN, Av. Ant nio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil 2 Escola de Engenharia UFMG, Av. Ant nio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil 3 Escola de Minas UFOP,Online Chat
Jul 18, 2020 Key Words Electrostatic, Phosphate, Tribocharging, Dolomite, Dry Beneficiation of phosphate ores by electrostatic processes has been demonstrated by various researchers since the 1940 s. Separations have been achieved by removing silica from phosphates, and with fewer examples of calcite and dolomite from phosphate.Online Chat
Abstract According to the properties of a medium-and-low grade collophanite, a contrast testing study was conducted on the basis of three kinds of flotation process. The result suggests that it is difficult to obtain high-quality phosphate concentrate from removing carbonate minerals only by the use of reverse flotation process.Online Chat
Apr 30, 2018 The free flow type Sub-A Flotation Machine with supercharged air is used due to the high tonnages that must be handled. Double overflow machines are used for the rapid removal of froth because a large proportion of the feed reports as concentrate. Flotation is very fast if the feed is properly deslimed and conditioned. The large tonnages usually treated require several parallel flotationOnline Chat
Apr 01, 1983 In the separation of these mixtures with the phosphate modifiers, a concentrate grade of 4760 WO 3 was obtained at 7090 recovery. This showed that the flowsheet of the selective flotation of scheelite with phosphate modifiers may replace the conventional Petrovs process.Online Chat
Generally, direct flotation by anionic surfactants or reverse flotation by cationic surfactants are conducted to remove the silicate gangues from phosphate ores. During the direct flotation process, the pulp pH was adjusted to around 9.5 by adding soda ash, and a proper amount of water glass was required simultaneously to depress the float of silicate minerals.Online Chat
However the best concentrate assay was 31.2 P2O5 with a 71.12 recovery, which was obtained from reverse tests. Keywords Mineral processing, phosphate processing, flotation, Lar mountain deposit 1. INTRODUCTION Separation of phosphate from carbonate gangues by flotation is extremely complex due to their similaritiesOnline Chat
According to the present invention, three flotation steps are used. In the first step, phosphate particles and gangue are separated. The residual silica in the phosphate concentrate obtained in that way is separated by means of a second flotation step. Then, the phosphate concentrate is subjected to a third flotation step to remove the carbonates.Online Chat
Jun 01, 1993 From a feed assaying 29.5 P205, a phosphate concentrate assaying about 34 P205 was obtained at neutral pH Mitzmager et al. 1966 dealt with the effect of soluble alkali phosphate salts on oleate flotation of calcite from phosphate slimes.Online Chat
A phosphate ore flotation process subjecting a phosphate ore containing carbonate mineral impurities to froth flotation in the presence of phosphate depressants, said depressants are alkyl phosphonic acids, and a carbonate collector, said collector is fatty acids, removing the separated carbonate minerals from the overflow, and recovering the phosphate value in the underflow.Online Chat