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Evaluation of Dolomite Separation Techniques

Evaluation of Dolomite Separation Techniques

A- Flotation Testing: Laboratory comparison of five phosphate-dolomite-silica flotation separation processes, developed by various investigators, was completed using a 26% P 2 O 5 / 2+ % MgO Florida pebble phosphate supplied by IMCF as the test sample. The current test results were compared with the previous investigators’ reported results ...

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Novel Technique for the Separation of Dolomite from

Novel Technique for the Separation of Dolomite from

The screened particles are de slimed (150 Mesh) (0.105 mm) and conditioned (2.5 minutes) at a pH 10. The concentrate is reconditioned ( 30 seconds) with sulfuric acid (maintains pH 4 5). This is followed by f lotation to remove dolomite. Final processing involves cationic flotation of the fine silica from the dewatered dolomite flotation cell.

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BENEFICIATION OF DOLOMITE AND MAGNESITE

BENEFICIATION OF DOLOMITE AND MAGNESITE

dolomite were liberated at 100 mesh size. Flotation tests conducted under the optimum con-ditions of 80%--200 mesh feed, 0.68 Kg/tonne of sod. silicate, and 0.44 kg/tonne of sod. oleate yielded a concentrate assaying 2.7% insol. After one cleaning, the product analysed 30.4% CaO and 21.25% MgO with 1.75% insol. Cationic flotation tests using amine

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Impact of Sodium Hexametaphosphate on the Flotation of

Impact of Sodium Hexametaphosphate on the Flotation of

The dolomite content in the concentrate is about 20%, where 80% of dolomite was removed and importantly 98% of the quartz was removed, with only 0.3% of the quartz in the final concentrate. Furthermore, the application of 1-hydroxyethylene-1,1-diphosphonic acid (HEDP) as a more environmentally friendly and low-cost alternative to SHMP is ...

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PDF Separation of dolomite from phosphate minerals by

PDF Separation of dolomite from phosphate minerals by

A phosphate concentrate containing 0.5% MgO and 32.2% P2O5 was obtained from a mixture of natural pure phosphate and dolomite minerals containing 10.2% MgO and 24.1% P2O5 at …

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Effect of Sodium Pyrophosphate on the Reverse Flotation of

Effect of Sodium Pyrophosphate on the Reverse Flotation of

In this study, the effect of sodium pyrophosphate (NaPP) on the separation of apatite from dolomite by flotation was systematically investigated. Flotation results revealed that NaPP could selectively depress the flotation of apatite, thus realizing the separation of apatite from dolomite. Further, the selective depression mechanism of NaPP was studied through zeta potential measurements ...

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Recover Chromite by Flotation 911 Metallurgist

Recover Chromite by Flotation 911 Metallurgist

Apr 06, 2021 Flotation concentrates from the Billie Girl sample contained 83 to 90 percent of the chromium at grades of 39.5 to 42.4 percent Cr2O3. Concentrate grades as high as 44.9 percent Cr2O3 were obtained, but the recoveries decreased sharply to approximately 50 percent. The test procedure and results of a typical test are described below.

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Anionic flotation of apatite from dolomite modified by the

Anionic flotation of apatite from dolomite modified by the

May 01, 1998 In this investigation a concentrate grade of less than 1.0% MgO was achieved with a 75% P2O5recovery. Experimentation was performed on the flotation of apatite and dolomite separately using anionic collectors in the presence of Mycobacterium phlei. Also, th

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Mechanism of separating pyrite and dolomite by flotation

Mechanism of separating pyrite and dolomite by 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 (Ca ⁺) dissolved ...

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Cellulase as a new phosphate depressant in dolomite

Cellulase as a new phosphate depressant in dolomite

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. Keywords: flotation, cellulose, cellophane, dolomite, oleic acid Introduction The phosphate/oleic acid flotation system has been studied extensively since the beginning of the flotation reached.

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Flotation of Dolomite from Apatite MDPI

Flotation of Dolomite from Apatite MDPI

Jun 29, 2018 The flotation process lasted 3 min for each test. Following this, the flotation recoveries were calculated based on the weights of concentrates and tailings. For artificial mixed minerals flotation experiments, the mass ratio of apatite and dolomite mineral was 1:1 for binary mixture. The flotation process was the same as single mineral tests. After

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Improving flotation separation of apatite from dolomite

Improving flotation separation of apatite from dolomite

Sep 01, 2020 Moreover, the selectivity index (SI) was used to evaluate the impact of PAMS on the separation features of apatite and dolomite by direct flotation, and its calculation formula is expressed as follows (Cao et al., 2019b): (1) SI = ε C A ε T A ε T D ε C D where SI is the selectivity index; ε C A and ε C D express the apatite and dolomite recoveries in concentrate, respectively; ε T A and ε T D represent the apatite and dolomite …

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Promising Options for Solving the Dolomite Problem of the

Promising Options for Solving the Dolomite Problem of the

Jan 02, 2019 Option 1 offers three methods for reducing MgO content in the concentrate from the Crago process, including adding a dolomite depressant in the rougher flotation step, dolomite flotation of the cleaner concentrate, and scrubbing the cleaner concentrate in quartz sand. These methods could reduce MgO content in the final concentrate by 20–40%.

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Comparative analysis of dolomite francolite flotation

Comparative analysis of dolomite francolite flotation

Aug 01, 1996 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.

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Double roles of sodium hexametaphosphate in the flotation

Double roles of sodium hexametaphosphate in the flotation

In order to better realize the flotation separation of fine apatite and dolomite, the flotation pulp pH was set at 4.50, as the reported pulp pH was between 4 and 6 to remove dolomite from apatite by reverse flotation [15]. The flotation results for artificial mixed mineral are listed in Fig. 6.

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Flotation Behaviors of Magnesite and Dolomite Using a

Flotation Behaviors of Magnesite and Dolomite Using a

Feb 17, 2021 The effects of flotation behaviors of magnesite and dolomite were investigated by flotation experiments, and the mineral wettability was characterized by contact angle testing. The results show that the mixed collector could greatly reduce the hydrophobicity of dolomite and improve the floatability difference between magnesite and dolomite.

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Flotation separation of carbonate from sulfide minerals I

Flotation separation of carbonate from sulfide minerals I

Jul 01, 2004 This is usually achieved by direct flotation of the gold and sulfide minerals into a bulk flotation concentrate. However, if the flotation recoveries of gold and sulfide are unsatisfactory, reverse flotation of the carbonate minerals is a possible alternative. In this study, calcite and dolomite were used as representative carbonate minerals, and pyrite and chalcopyrite as representative sulfide minerals to study the feasibility of the reverse flotation.

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High Precision Advanced copper ore flotation concentrator

High Precision Advanced copper ore flotation concentrator

Flotation is a selective process and can be used to achieve specific separations from complex ores such as lead-zinc, copper-zinc, etc. Advantagles of flotation concentrate machine Compared with common flotation machine, SF flotation machine has the following advantages: 1. Increase concentrate grade of by 4-6%. Add to Favorites.

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US4364824A Flotation of phosphate ores containing

US4364824A Flotation of phosphate ores containing

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. The phosphate concentrate is collected as the cell underflow.

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CN103691567B The flotation separation method of a kind

CN103691567B The flotation separation method of a kind

A flotation separation method for fluorite and dolomite in acid condition, comprise the steps: to adopt sulfuric acid do pH value adjusting agent, acid fuchsin and ironic citrate as dolomite and other impure mineral inhibitor, make the collecting agent of fluorite mineral with vegetable oil acid.Adopt the present invention can make fluorite mineral and dolomite and other impure mineral ...

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Phosphate Rock Treatment for Waste Reduction

Phosphate Rock Treatment for Waste Reduction

The amount of phosphogypsum produced using concentrate from the carbonate flotation process is about 3% less than phosphogypsum produced with untreated feed. This amounts to a reduction of over 42,000 tons per year for a 1,000 tpd P 2 0 5 phosphoric acid plant.

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Processing Florida Dolomitic Phosphate Pebble with

Processing Florida Dolomitic Phosphate Pebble with

flotation results with carbonate collector dosages at 1.5, 2.0 and 2.5 kg/t for rougher and 0.5 kg/t for cleaner are given in Table 4. The test results show that both collectors are very effective in dolomite flotation, but MP-13 is much stronger than MP-12, and further optimization is needed to find appropriate flotation conditions. Table 4.

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Minerals Free Full Text Influence of Sodium Phosphate

Minerals Free Full Text Influence of Sodium Phosphate

However, the flotation recoveries of the two minerals are not much different, as the difference in recoveries of magnesite and dolomite should be enlarged further, and the recovery of dolomite should be reduced to a certain value at the same time, in order to achieve the effective flotation separation and obtain the magnesite concentrate with ...

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