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Pilot Scale Direct Flotation of a Phosphate Ore with ...

The present pilot scale study addresses the direct flotation route for the concentration of a phosphate ore bearing a silicate-carbonate gangue. The target was to selectively separate apatite from a phosphate ore bearing silicate/carbonate gangue using flotation columns.

carbonate depression in flotation

Carbonate Depression In Flotation. carbonate depression in flotation - souleschoolpta. mining Danafloat Carbonate mineral gangue can also be present When liberated are usually much higher than copper . Get Price And Support Online » Use of depressants in the direct flotation of a …

FLOTATION ROUTES FOR A PHOSPHATE ORE BEARING …

Different process routes for the concentration of phosphate ores bearing silicate-carbonate gangue are mentioned in the literature: i. bulk apatite/carbonate flotation with fatty acids at alkaline pH, followed by carbonate flotation at pH 5.5 modulated with phosphoric acid [2,3,4,5,6] or citric acid [7,8];

AN INVESTIGATION OF FLOTATION REAGENTS

Although anionic flotation of phosphate with silica depression seems to be the logical approach for developing a single-collector process, inverse flotation of silica with phosphate depression also has potential. Most of the previous studies on phosphate depressants were focused on separating carbonate …

Method of floating calcium carbonate ore and flotation ...

Feb 24, 1998· The present invention relates to a method of floating calcium carbonate ore containing silicates as impurities. According to the invention, flotation is performed in the presence of a quaternary ammonium compound and an alkylene oxide adduct of an amine compound, the silicate being concentrated in the float.

Sodium silicate - Wikipedia

Sodium silicate is a generic name for chemical compounds with the formula Na 2x SiO 2+x or (Na 2 O) x · SiO 2, such as sodium metasilicate Na 2 SiO 3, sodium orthosilicate Na 4 SiO 4, and sodium pyrosilicate Na 6 Si 2 O 7.The anions are often polymeric.These compounds are generally colorless transparent solids or white powders, and soluble in water in various amounts.

Carbonate Depressants - Froth Flotation (Sulphide & Oxide ...

There is an interesting paper published in the Flotation'13 about apatite flotation with carbonate called: "Understanding the effect of CO2 on apatite flotation from Catalão´s siliceous carbonate phosphate ore"

Flotation : BASF SE

May 07, 2018· Our Lupromin® range includes non-metallic flotation collectors for minerals such as silica (aimed at calcium carbonate), apatite, barite and fluorspar. BASF's Lupromin® portfolio also includes a vast array of surfactants and short-chain aliphatic alcohols supplied as neutral frothers that prevent bubbles from collapsing during the flotation ...

Use of depressants in the direct flotation of a silicate ...

This work, carried out with a silicate-carbonate phosphate ore, aimed at studying the performance of depressant agents of different origins in the separation of apatite from the contaminants calcite and silicates by laboratory scale flotation. 2. Materials and methods

Evaluation of flotation strategies for sedimentary ...

Different flotation strategies to separate both calcite and silica from a sedimentary phosphate ore are studied in this paper. The results show that a single stage for flotation of phosphate or calcite is not enough to obtain high grade concentrates.

US5124028A - Froth flotation of silica or siliceous gangue ...

Silica and siliceous gangue are separated from desired mineral values, particularly iron and phosphate, by reverse froth flotation in the presence of amine collectors and effective amounts of alkanol amines such as diethanol amine.

Flotation Reagents - Mineral Processing & Metallurgy

Flotation Frothers What is the Function of Frothers. The function of frothers in flotation is that of building the froth which serves as the buoyant medium in the separation of the floatable from the non-floatable minerals. Frothers accomplish this by lowering the surface tension of the liquid which in turn permits air rising through the pulp to accumulate at the surface in bubble form.

carbonate depression in flotation - ellul.nl

carbonate depression in flotation. flotation routes for a phosphate ore bearing silicate-carbonate gangue (ii) calcite flotation in the presence of carbon dioxide followed by apatite iii. carbonate flotation with oleic acid at pH . mechanism of apatite depression and. Get Price

Calcium Carbonate | ArrMaz

The production of high purity calcium carbonate requires flotation to remove contaminants such as iron, magnesium, and silica / silicates. ArrMaz high-grade cationic collectors and flocculants have been developed for this particular purpose and are custom blended for customer-specific use at each plant.

water treatment – precipating silica - Degremont®

This involves adsorbing silica over an Aℓ or Mg hydroxide floc. This co-precipitation can be carried out under hot or cold conditions. It is often carried out at the same time as CaCO 3 precipitation for carbonate removal.. silica removal using Mg 2+. When magnesium is present in well water and when its pH level is adequate, it will precipitate with some of the silica when carbonates are ...

Froth flotation of silica or siliceous gangue - The Dow ...

Jun 23, 1992· What is claimed is: 1. A flotation process for the separation of silica or siliceous gangue from mineral values wherein the silica or siliceous gangue and mineral values in particulate from in an aqueous slurry are subjected to froth flotation in the presence of an amine collector and an alkanol amine corresponding to the formula (R) x NH (3-x) ...

Solving Global Phosphate Challenges | World Fertilizer

As lower-cost, simpler-to-beneficiate ores are depleted, producers must mine and process ores that are higher in carbonate, magnesium and silica. In many cases, flotation is the optimum method used to yield the grade required to produce an economically usable product for fertilizer production.

Minerals | Free Full-Text | A Review of Flotation ...

Determination of the appropriate depressing reagents for sinking valuable minerals in the presence of collectors for carbonates is a cardinal stage in obtaining an efficient separation in the direct flotation of Mg carbonate . One of the essential challenges during flotation in the presence of Mg carbonate is the occurrence of slimes.

Flotation of a carbonate rich sedimentary phosphate rock ...

In this study, a new flotation method is described which was applied successfully in a laboratory scale flotation cell. Flotation of Al-Jalamid phosphate rock (sedimentary type with high carbonates and low silica content) found in northern Saudi Arabia was studied using a fatty acid as collector and sodium sulfate as a flotation aid.

THE DISPERSION AND SELECTIVE FLOCCULATION OF …

THE DISPERSION AND SELECTIVE FLOCCULATION OF HEMATITE ORE By Howard James Haselhuhn III ... 3.2 Comparison of Dispersants for Selective Flocculation of Hematite Ore at a ... Total carbonate concentration of each sample before and after caustic

Application of carbonate-silica flotation techniques to ...

Application of carbonate-silica flotation techniques to western phosphate materials. [Avondale, Md.] : U.S. Dept. of the Interior, Bureau of Mines, 1982 (OCoLC)609309678

FLOTATION OF LOW GRADE SILICEOUS CALCAREOUS …

Flotation of low grade siliceous calcareous phosphate ore 247 flotation feed are given in Table 2, which shows that the ore is relatively of low phosphorus, and high siliceous and calcareous matters. Moreover, the MgO content is considerably high and most of it is found in the ore as carbonate. Table 2.

Evaluation of flotation strategies for sedimentary ...

Among three different processes for carbonate flotation, the results reveal better selectivity when phosphoric acid is used as depressant for phosphate. A circuit consists of a flotation stage for carbonate and another for either phosphate or silica presents the best strategy for upgrading such ore.

Clariant Mining Solutions Flotation '17 Highlights

Houston, TX, November 16, 2017 – Clariant, a world leader in specialty chemicals to the mining industry, participated in the 8th International Flotation Conference (Flotation '17). The conference took place from November 13 to 16 at the Vineyard Hotel, Cape Town, South Africa.

Mining Chemical Solution

Silica flotation Armoflote 930 For use over a wide range of process water qualities ... Carbonate flotation Atrac 50N Proprietary formulation, for low pH systems Potash Sylvite flotation Armeen HT Performs at ambient to slightly elevated temperatures (approx 18–30°C)

A Review of Flotation Separation of Mg Carbonates ...

Determination of the appropriate depressing reagents for sinking valuable minerals in the presence of collectors for carbonates is a cardinal stage in obtaining an efficient separation in the direct flotation of Mg carbonate [7]. One of the essential challenges during flotation in the presence of Mg carbonate is the occurrence of slimes.

Abrasion Characteristics of Huber's Ground Calcium ...

Abrasion Characteristics of Huber's Ground Calcium Carbonate (GCC) Products versus Competitors Calcium Carbonate. ... and undergo froth floatation. In this process, the GCC is slurried with water and a floatation chemical that binds to the silica. Air is bubbled through the mixture and the froth that forms carries the silica with

How calcite and silica can be depress in froth flotation ...

How calcite and silica can be depress in froth flotation of fluorite? How calcite and silica can be depress in froth flotation of fluorite? I have already tried sodium silicate and quebracho ...

EFFECfS OF DISSOLVED MINERAL SPECIES ON THE …

ditioned in carbonate solutions. The effects of dissolved mineral species of calcite and apatite on the flotation of these minerals has been shown recently in our laboratory to be drastic under certain solution conditions [6]. Flotation of calcite and apatite in mineral supernatants was drastically depressed due to the pre-sence of dissolved ...

Application of Carbonate-silica Flotation Techniques to ...

The flotation process includes depression of phosphate minerals with fluosilicic acid and anionic flotation of carbonate minerals, followed immediately by cationic flotation of silica. In laboratory and pilot plant tests the washing-sizing beneficiation plant feed ore was screened at 150 mesh and classified in hydrocyclones at 20 um.