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reverse flotation of phosphate :

Double reverse flotation of a very low grade sedimentary ...

2011-9-14  A common method for the elimination of carbonate from sedimentary phosphate minerals is reverse flotation, where phosphate minerals are depressed and carbonate minerals are floated. The various depressants of phosphate/apatite were used in phosphate reverse flotation procedures.

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Two-stage reverse flotation process for removal of ...

2018-10-6  Froth flotation has become an integral part of phosphate concentration process. In this study, double reverse flotation was applied to recover apatite from phosphate ore. H 3 PO 4 and CaO were used as phosphate depressants, in acidic and alkaline conditions. Fatty acids and amines were added as carbonate and silicate collectors respectively.

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Reverse flotation separation of quartz from phosphorite ...

2020-9-1  Reverse froth flotation, separating gangue from phosphorite ores by quartz flotation, is proved to be an effective way in the production of high-grade (P 2 O 5 content over 30%) phosphorus concentrates,,,. Multiple amine-typed surfactants are used as collectors for flotation separation of quartz from phosphate ore.

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Reverse flotation of sedimentary calcareous/dolomitic rock ...

2000-2-1  The processing of sedimentary dolomitic/calcareous phosphate ore has numerous problems, including similar surface properties of the carbonate and phosphate. Two-stage reverse anionic flotation of carbonates (dolomite/calcite) has appeared to be a promising separation technique for the removal of carbonates from sedimentary rock phosphate.

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Effect of Sodium Pyrophosphate on the Reverse Flotation of ...

Reverse flotation can be applied for phosphate ores that have high dolomite content [9,10,11,12]. However, there are still considerable difficulties in separating apatite from dolomite by means of reverse flotation.

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Reagents used in the flotation of phosphate ores: a ...

2003-7-1  Cationic collectors are employed in the reverse flotation of silicates as well as in the flotation of dolomitic and calcitic minerals from phosphate minerals. Snow (1979) used a cationic collector, tallow amine acetate and kerosene mixtures as phosphate collectors at a pH of 7 for enrichment of carbonate rich phosphate

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Reverse Flotation of Magnesite by Dodecyl Phosphate from ...

2018-11-12  (2005). Reverse Flotation of Magnesite by Dodecyl Phosphate from Dolomite in the Presence of Sodium Silicate. Separation Science and Technology: Vol. 39, No. 2, pp. 377-390.

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(PDF) Reagents used in the flotation of phosphate ores: A ...

2003-7-1  Fluoroapatite is a primary mineral in this type of phosphate rock. Reverse flotation is considered as one of the most effective approaches to achieve the recovery of apatite from

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Rice starch as a depressant in phosphate reverse flotation ...

2015-5-29  Depressants are essential additives, to increase the separation selectivity, in the reverse flotation of phosphate by fatty acid collectors. In the current study, the rice starch is used, as a phosphate depressant, in the reverse flotation of calcareous phosphate by oleic acid.

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Reverse Flotation - an overview ScienceDirect Topics

A reverse flotation circuit using xanthate at ca. pH 10.5 produces a pyrite concentrate that is sent to the tailings pond and a pyrochlore tailings stream that undergoes hydrochloric acid leaching at ambient temperature to dissolve carbonates, apatite and some iron sulfide minerals.

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Reverse flotation of sedimentary calcareous/dolomitic rock ...

One phosphorous rougher flotation, one bulk cleaner flotation and one carbonate reverse flotation at ore grind size of 86% passing 53 µm led to a phosphate concentrate assaying 28.68% P2O5, 12.06 ...

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Reverse Flotation of Magnesite by Dodecyl Phosphate from ...

2018-11-12  (2005). Reverse Flotation of Magnesite by Dodecyl Phosphate from Dolomite in the Presence of Sodium Silicate. Separation Science and Technology: Vol. 39, No. 2, pp. 377-390.

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COMPOSITIONS AND METHODS FOR REVERSE FROTH FLOTATION

In reverse froth flotation of phosphate ores, increasing the dosage of a fatty acid collector tends to increase the % P 2 O 5 in the concentrate (% grade) at the expense of % P 2 O 5 recovery of concentrate. We have found that the same is true of the sulfonated fatty acid and/or sulfonated fatty acid salt collectors, i.e. in reverse froth ...

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Double reverse flotation of a very low grade sedimentary ...

2011-9-1  Reverse-flotation tests of the phosphate-rich fraction (71-315 µm) have helped to improve the P 2 O 5 grade to 27.1%, with a recovery rate of 92.4%. View.

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Reverse Flotation of Magnesite by Dodecyl Phosphate from ...

The separation of magnesite from dolomite was achieved in a reverse flotation which resulted in a 76.1 per cent yield of magnesite with a grade of 47.3 per cent at 100 ppm dodecyl phosphate and 75 ...

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Effect of Sodium Pyrophosphate on the Reverse Flotation of ...

Reverse flotation can be applied for phosphate ores that have high dolomite content [9,10,11,12]. However, there are still considerable difficulties in separating apatite from dolomite by means of reverse flotation.

More

Rice starch as a depressant in phosphate reverse flotation ...

2015-5-29  Depressants are essential additives, to increase the separation selectivity, in the reverse flotation of phosphate by fatty acid collectors. In the current study, the rice starch is used, as a phosphate depressant, in the reverse flotation of calcareous phosphate by oleic acid.

More

Combination of Spiral Gravity and Direct-Reverse Flotation

2016-4-20  minerals Technical Note Beneficiation of a Sedimentary Phosphate Ore by a Combination of Spiral Gravity and Direct-Reverse Flotation Xin Liu 1, Yimin Zhang 1,2,3,*, Tao Liu 1,2,3, Zhenlei Cai 1,2,3, Tiejun Chen 1,2,3 and Kun Sun 1 1 College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; [email protected] (X.L.); [email protected] ...

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(PDF) Application of amine collectors in reverse flotation ...

Three newly developed cationic amines: 605G83, 605G91 and 605G94 were investigated as the collector for the reverse flotation of quartz from phosphate ore.

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Beneficiation of a Sedimentary Phosphate Ore by a ...

In China, direct-reverse flotation is proved to be applicable to most phosphate ores. However, because the ratio of froth product is generally high, current direct-reverse technology faces challenges in terms of high reagent consumptions and cost. A new gravity and flotation combined process has been developed for the recovery of collophanite from sedimentary phosphate

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Double reverse flotation of a very low grade sedimentary ...

2011-9-1  Reverse-flotation tests of the phosphate-rich fraction (71-315 µm) have helped to improve the P 2 O 5 grade to 27.1%, with a recovery rate of 92.4%. View.

More

Effect of Sodium Pyrophosphate on the Reverse Flotation of ...

Reverse flotation can be applied for phosphate ores that have high dolomite content [9,10,11,12]. However, there are still considerable difficulties in separating apatite from dolomite by means of reverse flotation.

More

Flotation of phosphate ores containing dolomite ...

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.

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Study on Collector for Reverse Flotation of Certain ...

With the use of this agent in certain low-grade high-Mg phosphorite, the phosphate concentrate indexes of single reverse flotation are grade of 30.25% P 2 O 5, recovery of 90.63% and content of 0.99% MgO.

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Combination of Spiral Gravity and Direct-Reverse Flotation

2016-4-20  minerals Technical Note Beneficiation of a Sedimentary Phosphate Ore by a Combination of Spiral Gravity and Direct-Reverse Flotation Xin Liu 1, Yimin Zhang 1,2,3,*, Tao Liu 1,2,3, Zhenlei Cai 1,2,3, Tiejun Chen 1,2,3 and Kun Sun 1 1 College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; [email protected] (X.L.); [email protected] ...

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Bubble Size Effects in Coal Flotation and Phosphate ...

2020-10-13  Bubble Size Effects in Coal Flotation and Phosphate Reverse Flotation using a Pico-nano Bubble Generator Yu Xiong . Froth flotation is widely used in minerals industry. However, it is effective in a narrow size range, nominally 45–250 μm for coal and 10–150 μm for minerals. And the flotation

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四川某磷矿双反浮选试验研究

2017-12-18  Abstract:A double-reverse flotation approach was adopted in flotation of a phosphate ore from Sichuan Province. For de-magnesium process, a new reagent MG-7 was used as reverse flotation collector, while H 2 SO 4 was used as depressant and pH regulator.

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Beneficiation of a Sedimentary Phosphate Ore by a ...

In China, direct-reverse flotation is proved to be applicable to most phosphate ores. However, because the ratio of froth product is generally high, current direct-reverse technology faces challenges in terms of high reagent consumptions and cost. A new gravity and flotation combined process has been developed for the recovery of collophanite from sedimentary phosphate

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Enhancement of Phosphate Flotation by Ultrasonic

2021-8-19  phosphate minerals and new methods and reagents were presented [3-6]. Methods like double reverse flotation, flotation with using micro and nanobubbles, using a mixture of ionic and non-ionic reagents, use of new chemical substances and using acoustic effect on flotation, were suggested [2, 5, 7-10].

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Review of the Main Factors Affecting the Flotation of ...

The way to successfully upgrade a phosphate ore is based on the full understanding of its mineralogy, minerals surface properties, minerals distribution and liberation. The conception of a treatment process consists of choosing the proper operations with an adequate succession depending on the ore properties. Usually, froth flotation takes place in phosphate enrichment processes, since it is ...

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