Selective flocculation, magnetic separation, and flotation of ores …

The flotation removal of the remaining coarse quartz tends to make fine iron oxide particles float. When coarse quartz particles are present in large amounts, as in the case of low-grade iron ores, the selectivity of the flotation separation is impaired and the process practiced at the Tilden mine becomes ineffective.

Upgrading of calcareous phosphate ores by flotation: Effect of ore

The calcareous types of phosphate ores are extremely difficult to concentrate, specially by flotation, due to the similar physicochemical characteristics of surfaces of the main constituents, carbonates and phosphates (Elgillani and Abouzeid, 1993). To help understand the adsorption mechanisms in these systems, extensive …

Advancing phosphate ore minerals separation with sustainable flotation

In this paper, the effects of caustic cassava starch (CS) on the single mineral flotation performance of fluorite and dolomite and the flotation separation of mixed ore were studied. Its selective ...

Effect of geological origin of apatite on reverse flotation separation

Flotation is an effective approach that can be used to selectively separate phosphorous from complex mineral ores. However, for phosphate ores of different geological origins, the flotation flowsheet designed for processing these ores depends on both the type of ore and the nature of the impurities (Zhong et al., 1993).

Phosphate Ore Flotation Process and Other Separation …

The reverse flotation process is simple and has high dolomite separation efficiency, so it has been widely used in the mineral processing industry. (3) Phosphate ore forward-reverse and reverse-forward flotation processes:The flotation of phosphate ore is essentially the separation of colloidal phosphate rock from quartz and dolomite. When …

Reagents used in the flotation of phosphate ores: a critical …

Today, more than two-thirds of the phosphate ore produced in Florida and more than half of the world's marketable phosphate is upgraded by the flotation method. Other beneficiation methods (e.g. calcinations, acid leaching, and magnetic separation) applied in the industry have certain limitations and disadvantages when compared to …

Review of the reagents used in the direct flotation of phosphate ores

Beneficiation of low-grade phosphate deposits through direct froth flotation has captured more attention to satisfy the future needs of phosphorous industry. This is owing to the excessive consumption of the global reserves of high-grade phosphate deposits. Phosphate flotation using mixed collectors has been proved to give greater selectivity and high …

Review of the Main Factors Affecting the Flotation of …

For calcareous ores, separation by flotation of carbonates (calcite and dolomite) and phosphates is challenging since the two mineral groups share similar surface chemical …

Study on the Reverse Flotation Separation of Smithsonite …

Abstract. Dolomite, a prominent calcium-bearing gangue mineral found in carbonate-type zinc oxide ores, poses a significant challenge for effective flotation …

An overview of the beneficiation of iron ores via reverse …

The flotation separation under these conditions had the highest Gaudin's selectivity index (14.8). 6. Depressants. A common depressant used during the reverse cationic flotation of iron ores is corn starch containing over 98% of amylose and amylopectin due to its wide availability and good depressing abilities for iron oxides …

Comparative analysis of dolomite/francolite flotation …

The results of bench-scale testing of five flotation processes for the separation of dolomite from phosphate are discussed. Each process is compared in terms of phosphate recovery, MgO content of the concentrate and reagent consumption. Water quality was found to play a major role in the performance of these processes. The effect …

Surface Electrical Behaviors of Apatite, Dolomite, Quartz, …

This will increase the separation difficulty of apatite from dolomite in the phosphate ore flotation process. The negative zeta potentials of apatite, dolomite, quartz and phosphate ore increase in the presence of Ca 2+ and Mg 2+. Moreover, a more zeta potential increase in presence of Ca 2+ than Mg 2+ was investigated, suggesting a stronger ...

Selective reverse flotation of apatite from dolomite in …

Flotation has been the most widely adopted technique for the separation of dolomite from apatite for this kind of magnesium (calcium) phosphate ore, and an anionic collector, such as sodium oleate ...

The depression effect and mechanism of NSFC on dolomite …

A satisfactory separation effect was realized when pH was 9.0, TSG dosage was 10 mg/L and NaOL dosage was 40 mg/L, at which the recovery of single apatite and dolomite was 80.28 % and 3.46 % respectively, and the grade of P 2 O 5 and the recovery of P 2 O 5 of the concentrate was 35.86 % and 76 % respectively in mixed ore flotation …

Comparative analysis of dolomite/francolite flotation …

Abstract. The results of bench-scale testing of five flotation processes for the separation of dolomite from phosphate are discussed. Each process is compared in …

(PDF) Flotation of Iron Ores: A Review

This paper reviews the industrial practices and fundamental research surrounding iron ore flotation. The advantages and disadvantages of direct flotation, cationic reverse flotation, and anionic ...

Review of the Main Factors Affecting the Flotation …

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 ...

Enhanced Flotation of Dolomite Particles by Grinding with …

The distribution model utilized was Gaudin–Schumann. All parameters, including the grinding chamber, grinding media, ore, and other factors, remained …

Review of the Main Factors Affecting the Flotation of Phosphate Ores …

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 …

An overview of the beneficiation of iron ores via reverse …

Flotation is the most effective solution, both technologically and economically, when upgrading iron concentrates. Research regarding iron ore flotation began in 1931, demonstrating that reverse cationic flotation is a very efficient method for beneficiating oxidised iron ores. This method can also be applied to reduce the silica …

Selective reverse flotation of apatite from dolomite in collophanite

The complexities of separating apatite and dolomite in collophanite ore is mainly attributable to the fine dissemination size and complex ore properties, such as similar surface mineral compositions, which result in the floatation of dolomite (or apatite) when using collectors that float apatite (or dolomite) (Abdel-Khalek, 2000, Al-Fariss et ...

Intensification of the flotation separation of potash ore …

The lowest flotation selectivity was observed for the fine-grained ore sample (0.1–0.25 mm). The combined ultrasonic treatment of this sample during conditioning and flotation approximately halved the recovery of NaCl in the potash concentrate (from 17.9 % to 9.9 %) and increased the KCl recovery from 89.9 % to 95.9 %.

Predictive Geometallurgical Modeling for Flotation …

This study presents a predictive geometallurgical model for the Ouansimi copper deposit in Morocco, focusing on the flotation of mixed copper ores. The deposit was divided into two geometallurgical domains (GMD) with distinct oxidation rates using K-means clustering. The principal component analysis-partial least squares regression …

Reagents used in the flotation of phosphate ores: A critical review

The literature on the processing of phosphate rocks by flotation is critically reviewed. Commonly used collectors, depressants, auxiliary reagents, and their mixtures in the flotation of the ...

Enhancing selective calcite and dolomite flotation in the …

This paper presents a comprehensive study on the selective flotation of a multi calcium-bearing minerals ore, focusing on the efficient removal of dolomite and calcite impurities from a carbonaceous sedimentary phosphate ore. Commercial fatty acid (FA) and phosphate ester collectors were investigated in a reverse flotation process, …

Enhancing selective calcite and dolomite flotation in

Micro-flotation results indicated that the addition of P (AA-AMPS) could achieve the efficient separation of apatite from dolomite at pH 8.5 by selectively depressing the dolomite flotation, in ...

The Effect of Oleic Acid Emulsification using SPE on Fluorite …

Carbonate-fluorite ore is one of the main types of fluorite ores, usually in coexistence with other gangue minerals like dolomite, calcite, and others. 5, 6 It is difficult to separate fluorite and dolomite efficiently due to their extremely similar floatability. An effective way to improve the flotation separation of fluorite and dolomite lies ...

(PDF) A Review of Flotation Separation of Mg Carbonates (Dolomite …

Flotation Separation of Dolomite from Magnesite Surface characterizations of dolomite and magnesite indicate that their separation from each other is quite complicated; however, separation can be achieved using flotation at optimum conditions aided by using modifiers along with collectors. pH and mineral dissolution are cardinal for their ...

Enhancing selective calcite and dolomite flotation in the …

@article{Derhy2024EnhancingSC, title={Enhancing selective calcite and dolomite flotation in the phosphate ores: Investigation, modeling, and automated mineralogy assessment}, author={Manar Derhy and Yassine Taha and Yassine Ait-khouia and Abdellatif Elghali and Mostafa Benzaazoua and Rachid Hakkou}, journal={Minerals Engineering}, year={2024 ...

Enhancing selective calcite and dolomite flotation in the …

Abstract. This paper presents a comprehensive study on the selective flotation of a multi calcium-bearing minerals ore, focusing on the efficient removal of dolomite and calcite impurities from a carbonaceous sedimentary phosphate ore.

On the impact of grinding conditions in the flotation of …

Separation index per size class (µm) between the ore mineral and other SSSM computed based on the modified flotation rate constant for each of the ores. Table 5 . Median separation index per size class (µm) between the ore mineral and other gangue minerals that are not SSSM computed based on the modified flotation rate …

Separation flotation method for dolomite-barite type lead-zinc ore

The invention belongs to the technical field of mineral separation, and particularly discloses a dolomite-barite lead-zinc ore separation flotation method. The method comprises the steps of crushing dolomite-barite type lead-zinc ore, screening ore with the granularity of-20 +2mm, and then feeding the ore washed ore with the oversize fraction into a heavy …

A Process Mineralogy Approach to the Flotation of Complex …

Complex and non-sulfide lead–zinc ores are difficult to concentrate, but the growing demand for lead and zinc metals necessitated their beneficiation. Froth flotation is practically the most effective method in their beneficiation when optimum flotation conditions are attained. The aim of the current study is to use process mineralogy as a …

Enhanced flotation separation of phosphate and dolomite …

Among the impurities present in phosphate ore, dolomite is the most difficult to remove. This is because dolomite and phosphate have similar chemical compositions …

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 …

Method for separating dolomite from dolomite-barite lead-zinc ore

The dolomite-barite lead-zinc ore treated in this example contained 0.97% lead, 3.33% zinc, approximately 16% barite mineral and approximately 67% gangue dolomite. The method for separating dolomite into coarse grains is carried out by referring to the flow shown in FIG. 1, and comprises the following steps: s1: ore crushing.

Selective reverse flotation of apatite from dolomite in collophanite

The collophanite ore sample used for batch flotation was obtained from Qingping Phosphate Ore Mine (Sichuan, China). As shown in the X-ray diffraction (XRD) pattern (Fig. 1), the major constituents of this ore sample are colloidal apatite, dolomite, kaolinite, quartz, and various types of svanbergite, pyrite, etc. Colorimetry, inductively …