• PDF Effects of Metal Ions on the Flotation of Apatite

    The effects of Ca², Mg², Al³, and Fe³ on the flotation behaviors of apatite, dolomite and quartz were investigated through a microflotation test, and the influence of calcium ions

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  • Apatite Flotation Kinetics

    For purified KE 883 B fig. 3 again high recovery levels are displayed but a decrease in flotation recovery is noticeable for the finer sizes. For very fine sizes for example below 5 micrometer the entrainment contribution is probably responsible for significant part of the recovery attained.

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  • US3915391ARecovery of scheelite from ores by flotation

    A flotation process for recovering scheelite calcium tungstate from a low grade slimey ore containing other calcareous minerals such as calcite is described. The scheelite is selectively flocculated by conditioning the ore pulp at a high pH, using intense agitation, usually prolonged, in the presence of predetermined quantities of a deflocculating agent, a source of polyvalent cations to

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  • SURFACE CHEMISTRY AND FLOTATION BEHAVIOR OF

    beneficiation and recovery. Monazite is the second most important rare earth mineral that can be further exploited. In this study, the surface chemistry of monazite in terms of zeta potential, adsorption density, and flotation response by microflotation using octanohydroxamic acid is determined.

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  • Effect of sodium pyrophosphate on the flotation separation

    Fig. 2c shows the relationship between the flotation recovery and SPP concentration. The recovery of calcite was above 95% in the whole tested range. The recovery of apatite decreased with increasing SPP concentration and significantly decreased when the concentration was over 90 mg/l, and the optimal dosage of SPP was 120 mg/l.

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  • Effects of Metal Ions on the Flotation of Apatite

    The results indicate that an appropriate amount of Ca2+ and Mg2+ can improve the floatability of apatite but had a negligible effect on the flotation performance of dolomite, whereas Al3+, Fe3+, and excessive amounts of Ca2+ decreased the recovery of apatite and dolomite. The studied metal cations can activate quartz at a particular pH.

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  • PDF Effects of Metal Ions on the Flotation of Apatite

    The effects of Ca², Mg², Al³, and Fe³ on the flotation behaviors of apatite, dolomite and quartz were investigated through a microflotation test, and the influence of calcium ions

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  • Selective reverse flotation of apatite from dolomite in

    Reverse flotation is an effective method for separating apatite from gangue minerals such as dolomite in collophanite ore. However, collophanite ore flotation using traditional fatty acid collectors is uneconomical because of the relatively high cost of the raw materials.

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  • A Review of Flotation Separation of Mg Carbonates

    Minerals 2018, 8, 354 3 of 13 Table 1. Cont. Particle Size FractionmFlotation Type Dolomite Recovery % Associated Mineral Recovery % Mineral Type References 100 + 74 Reverse ~15 Apatite: ~85 Pure mixture

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  • A Review of Flotation Separation of Mg Carbonates

    Minerals 2018, 8, 354 3 of 13 Table 1. Cont. Particle Size FractionmFlotation Type Dolomite Recovery % Associated Mineral Recovery % Mineral Type References 100 + 74 Reverse ~15 Apatite: ~85 Pure mixture

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  • Selective reverse flotation of apatite from dolomite in

    Reverse flotation is an effective method for separating apatite from gangue minerals such as dolomite in collophanite ore. However, collophanite ore flotation using traditional fatty acid collectors is uneconomical because of the relatively high cost of the raw materials.

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  • THE USE OF COLUMN FLOTATION FOR THE RECOVERY OF

    THE USE OF COLUMN FLOTATION FOR THE RECOVERY OF ULTRAFINE PHOSPHATES Harold E. Wyslouzil PresidentCanadian Process Technologies Inc. VancouverBC, Canada Abstract Brazil currently produces around 4.0 Mt per year of phosphate rock, most of which is utilized in the manufacture of phosphate fertilizers.

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  • Separating Dolomite & Apatite by Flotation

    Thus, flotation tests were also conducted with feed composition of 95:5 apatite:dolomite mixture. The results reported in Figure 4 indicate that effective separation of dolomite as a minor mineral, is also possible by flotation after twostage conditioning.

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  • US5407080AApatite flotation reagentGoogle Patents

    This invention relates to apatite flotation reagents which can be used simultaneously with silica collectors in a coflotation process without problems of incompatibility between the apatite flotation reagent and the silica collectors. The apatite flotation reagent includes soya lecithin. The soya lecithin can be used as an apatite collector by itself or can be blended with a phosphate ester

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  • Recovery of Apatite from Slimes of A Brazilian Phosphate Ore

    to remove particles < 10 m; barite flotation and apatite flotation. This work shows the results obtained in a study of apatite concentration from a slime sample provided by the industrial phosphate ore plant of the Copebras China MolybdenumCMOC International, located at Catalão Goias state, Brazil. The feed sample containing 13.2% of

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  • MineralsFree FullTextA Comparative Study of

    The recovery of apatite in flotation in the presence of nanobubbles significantly increased up to more than 30%, compared to flotation in the absence of nanobubbles. One alternative to the flotation of phosphate slimes is the application of the column flotation [10,12,13,14,15,16].

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  • Effect of sodium pyrophosphate on the flotation separation

    Reverse flotation is a common method for the separation of apatite from calcareous phosphate ore , , . Since the surface properties of calciumbearing minerals in phosphate rock are similar, the reaction behavior of several minerals with fatty acid collectors is almost the same.

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  • Flotation of Dolomite from ApatiteMDPI

    As can be seen from Table 1 that, the flotation recovery of apatite was improved from 39.4% to 96.5% in the presence of NaPP, while the recovery of MgO slightly increased from 11.3% to 16.3%. 5 grade of concentrate from 26.4% to 34.1% and a decrease of MgO grade of concentrate from 3.8% to 2.9%.

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  • PDF NEW SYNTHETIC COLLECTOR FOR THE DIRECT FLOTATION

    NEW SYNTHETIC COLLECTOR FOR THE DIRECT FLOTATION OF APATITE FROM COMPLEX ORENEW SYNTHETIC COLLECTOR FOR THE DIRECT FLOTATION OFthat the maximum flotation recovery was found at 90.5%

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  • PHOSPHATE PRODUCERS IMPROVE PLANT PERFOR

    PHOSPHATE PRODUCERS IMPROVE PLANT PERFOR MANCE USING C.P.T. INC FLOTATION TECHNOLOGY Harold E. WyslouzilP.EngThe apatite is recovered by flotation using tall oil as a collector, a froth modifying surfactant for froth control, caustic soda as pH regulator and causticOverall apatite recovery was 1% to 2% higher.

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  • Effects of Metal Ions on the Flotation of Apatite

    The results indicate that an appropriate amount of Ca2+ and Mg2+ can improve the floatability of apatite but had a negligible effect on the flotation performance of dolomite, whereas Al3+, Fe3+, and excessive amounts of Ca2+ decreased the recovery of apatite and dolomite. The studied metal cations can activate quartz at a particular pH.

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  • Recovery of apatite from flotation tailingsRequest PDF

    The flotation performance grade and recovery of apatite particles in a complex carbonatite ore from Brazil was investigated in a flotation column as a function of particle size and reagent

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  • US3405802AFlotation of apatiteGoogle Patents

    flotation apatite ore pulp sulphonate Prior art date 19640720 Legal status The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed. ExpiredLifetime Application number Inventor Preller Gustav Schoeman Schoeman Barend

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  • Selective flotation of apatite from iron oxides

    Flotation recovery of three size fractions of apatite and hematite in batch flotation tests AF5 in the presence of sodium silicate and AF27 in the absence of sodium silicate as a function of flotation time analysis by Q EM* SEM . in the iron content in the apatite concentrate always

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  • Experimental Study on Low Temperature Flotation Recovery

    An experimental research on comprehensive recovery of associated apatite from certain iron tailings in China was carried out. The phosphorus flotation is realized at low temperature through the application of the new, more efficient AW series collector. The test results showed that the concentrate whose P2O5 grade was 33.50%,recovery was 92.18% was obtained for the tailings whose P2O5 grade

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  • Experimental Study on Low Temperature Flotation Recovery

    An experimental research on comprehensive recovery of associated apatite from certain iron tailings in China was carried out. The phosphorus flotation is realized at low temperature through the application of the new, more efficient AW series collector. The test results showed that the concentrate whose P2O5 grade was 33.50%,recovery was 92.18% was obtained for the tailings whose P2O5 grade

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  • Preseparation of Siliceous Gangue in Apatite Flotation

    Flotation tests were conducted using a benchscale column. The main process variables were studied and optimized through a canonical analysis of the fitted empirical equation. The experimental results indicated that a product was obtained with the necessary concentration for further apatite recovery.

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  • The USe of ColUmn floTaTion for The reCovery of

    flotation machines were widely used in industry in 1920s and 1930s, but were later replaced by the impellertype flotation devices in mineral processing plants. Dissolvedair flotation became the main type of flotation for water treatment applications. These substitutions were the result of the

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  • Recovery of apatite from flotation tailingsScienceDirect

    Recovery of apatite from flotation tailings 1. Introduction. Mineral resources are being depleted at faster rates than ever.2. Experimental. The sample of reject used in this study was taken from3. Results and discussions. Fig. 2 shows the P 2 O 5 grade in the concentrate as a function4.

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  • Recovery of apatite from flotation tailingsRequest PDF

    Recovery of apatite from flotation tailings.Apatite is the most common phosphate mineral and a vital nonrenewable resource which is the only economically feasible source of phosphorus for phosphate fertilizers and chemicals.

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  • CalciteApatite FlotationColumbia University

    for the effects of phosphate/carbonate species on apatite flotation. Calcium oleate precipitation does not occur to a significant extent in this case due to the lower level of oleate used for the flotation of apatite 10. The observation that the flotation of calcite and apatite

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  • Flotation collectors optimized performance

    contacted us with issues of flotation recovery, especially involving coarse sylvite. When brine temperatures went above 30 °C, the recovery started to drop and it was not possible to compensate completely by increasing dosage.For flotation of phosphate/apatite: recovery was experienced.

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  • Influence of operating parameters on the flotation of the

    It can be concluded from the results that higher pulp pH had positive effects on apatite flotation. According to the work by Feng and Aldrich 2004, increased the flotation recovery with increased the pH of pulp probably through softening the process water and speeding up the electrolysis of the fatty acid .

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  • Flotationore dressingBritannica

    Flotation is widely used to concentrate copper, lead, and zinc minerals, which commonly accompany one another in their ores. Many complex ore mixtures formerly of little value have become major sources of certain metals by means of the flotation process.

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