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· A process applicable to different lithologies of phosphate ore with siliceous-carbonated matrix from igneous or sedimentary origin rocks includes ore preparation by comminution through crushing, grinding, and de-sliming, prior to apatite flotation. During flotation, ground and de-slimed ore pulp with high concentration of solids, above 40%, is initially conditioned with depressant reagent, e.g ...
contact us1. The velocity and selectivity of mineral flotation from ores depends markedly on the formation of the optimum volume of flocculated-structure foam in the cell. 2. When flocculated foams are formed in basic flotation without further purification operations, it is possible to obtain apatite concentrates with 39.4% P2O5 at 85–88% extraction; coarsely crushed ores largely promote the formation ...
contact us· The apatite recovery of each flotation test was calculated by Eq. . (1) R a p (%) = M C ⋅ x a p, C M F ⋅ x a p, F × 100 where R ap is the apatite recovery, M F is the mass (g) fed into the column, M C is the mass (g) of the floated fraction, x ap,F is the apatite content in the flotation feed sample, and x ap,C is the apatite content in ...
contact usfor apatite flotation where the percentage of silicates or calcium oxide / phosphorous pentoxide ratio is high. Lupromin® FP A 711 is an anionic collector recommended for apatite flotation where the percentage of silicates or calcium oxide / phosphorous pentoxide ratio is high. These products
contact usA method is disclosed for separating phosphate minerals from a mineral mixture, particularly from high-dolomite containing phosphate ores. The method involves conditioning the mineral mixture by contacting in an aqueous in environment with a collector in an amount sufficient for promoting flotation of phosphate minerals. The collector is a hydroxamate compound of the formula; wherein R is ...
contact usComparative results for rougher flotation in 6" and 4" column flotation and for cleaner flotation in 4" and 2" column flotation. Figure 5. Relation between the P 2 O 5 grade and Fe 2 O 3 ( a ) and SiO 2 ( b ) impurities in the final apatite concentrate for both circuits.
contact usAdditional test work is still required to investigate the influence of proteins in the mineral flotation. It appears that different flotation systems react differently to the protein presence. Peres and Correa (1996) showed that zein act as an efficient hematite depressant, corroborating industrial observations. On the other hand, phosphate ore ...
contact usThe reverse flotation was conducted in order to float the silica to concentrate and depressed apatite to the tailings. The flotation test was carried out with a À150 lm sample in a 2.5 L Denver mechanical flotation cell under different flotation conditions, as stated in Table 1. The resulting product fractions (concentrate and tailings) were ...
contact usAn investigation on flotation behavior and mechanism of oleic acid amide onto apatite was carried out by micro flotation tests, zeta potential measurements, and XPS analysis. The flotation results showed that mixing sodium oleate and oleic acid amide could float apatite well in a pH 7.5–9.5 range even at the acid number of 120mgKOH/g and it ...
contact us· Metallurgical Responses. Flotation test results (Figure Figure1 1) illustrated that the mass recovery in the presence of all NB flotation setups (NB—nanobubbles, NBC—nanobubbles with collector, NBF—nanobubbles with frother) was higher than that in the conventional test (CB).NB and NBC experiments showed the highest mass recoveries for −850 and −106 μm, respectively (on average).
contact us· The sample of apatite and calcite were purchased from Ye''s Mineral Specimen Group, Guangdong Province, China and the high purities were confirmed by the X-ray diffraction (XRD) analysis and chemical composition analysis (shown in Fig. 1 and Table 1).The apatite contained 39.37% P 2 O 5 and calcite contained 55.98% CaO indicating the purity of hydroxy-apatite is 92.81% and the purity of ...
contact usAn 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 ...
contact usThis 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 ...
contact usIn this study, there is 1.42% P2O5 in the P-containing V-Ti magnetite tailings in Miyi Region of China, with the valuable minerals mainly including apatite, and aluminosilicate minerals as the main gangue components. The direction flotation process was used to recover phosphorous from the low-grade phosphorous-bearing V-Ti magnetite tailings. The results showed that an optimized phosphorous ...
contact us· The process has multiple steps, flotation is the key principle applied to separate the apatite from the non-valuable tailings. This process is repeated in several steps to obtain a high purity product with the right specification for further processing.
contact usThe effects of Ca2+, Mg2+, Al3+, and Fe3+ on the flotation behaviors of apatite, dolomite and quartz were investigated through a micro-flotation test, and the influence of calcium ions on the flotation of these minerals was further elucidated by solution chemistry study, zeta potential measurement, and X-ray photoelectron spectroscopy (XPS) analyses.
contact us· Environmentally friendly flotation reagent, polyaspartic acid (PAPA), was tested as a potential selective depressant in the flotation separation of ch…
contact usMixed Anionic/Non-Ionic Collectors in Phosphate Gangue Flotation from Magnetite Fines. The Open Mineral Processing Journal, 2010. Ranjan Dwari. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER.
contact usBefore the apatite circuit is to be put into operation, it would be necessary to test for any potential harmful effect that the water additional content of Ca 2+, Mg 2+, and PO 4 3 − due to the leaching of the apatite flotation concentrate may have on the upstream carbonates and/or pyrochlore flotation circuits, as ~75% of the water is ...
contact usThe results indicate that better flotation apatite recovery results were achieved for the circuit with higher size columns (6" and 4"). The results can be explained by the application of a cavitation tube in the rougher stage in the 6" column. The improved flotation performance can be attributed to increased probabilities of collision and ...
contact usFurthermore, another locked cycle flotation test showed that a 0.82% MgO content in the final apatite concentrate can be achieved with an apatite recovery of 75.6% at a P 2 O 5 grade of 36.76%, and a ratio CaO/P 2 O 5 = 1.33.
contact usApatite flotation –Coarse fraction Scavenger Grade (%) P2O5 CaO Fe 2O3 SiO 2 Al2O3 26,6 37,0 3,4 19,4 4,3 Feed R P 2O5 Grade (%) P2O5 CaO Fe 2O3 SiO 2 Al2O3 65,5 32,9 42,8 2,3 11,3 6,3 Concentrate CornStarch= 300 g/t Sulphossucinate = 500 g/t pH = 11,0 Massrecovery= 28,6% P2O5recovery= 42% -85% flotation P2O5grade = 32% SiO 2grade = 7,1% ...
contact us· The phosphate ore flotation is achieved through the surface electrical behavior difference among apatite, dolomite and quartz, but it is usually affected by the dissolved ions from pulp, especially Ca2+ and Mg2+. The zeta potentials of apatite, dolomite, quartz, and phosphate ore in different solutions were measured to discuss the surface electrical behaviors of them in this study.
contact usFlotation selectivity of apatite with Phospholan PE65 and Аrcomon SO is determined by less yield of magnesium-containing silicates in the concentrate as compared to flotation with saponified tall oil fatty acids, though these reagents are sensibly less selective than Flotol-7,9 which yields much lower content of magnesium and silicium in the ...
contact usThe apatite''s floatability promoted in flotation tests using the natural oils blending at different proportions (red dots) and the Flotigam 5806 (dashed black line), both at concentration of 2.5 mg/L, are shown in Figure 1. The test with pure MACO provided greater floatability (approximately 92%) compared to blending with any proportion of
contact usUS2466995A US636227A US63622745A US2466995A US 2466995 A US2466995 A US 2466995A US 636227 A US636227 A US 636227A US 63622745 A US63622745 A US 63622745A US 2466995 A US2466995 A US 2466995A Authority US United States Prior art keywords ilmenite apatite acid starch concentrate Prior art date 1945-12-20 Legal status (The legal status is an assumption and is not a …
contact uspH. Interestingly, flotation at the minimum is found to increase from about 25% to 85% with increase in KNO3 from 0 to 3 x 10-2 kmo1/m3. Flotation again increases to about around pH 13. The effect of apatite supernatant on oleate flotation of
contact usflotation concentration. The apatite concentrates are obtained using the selective flotation from the silicate and oxide minerals while defining the process of selective flotation of apatite from carbonate deposits is the major problem worldwide. The experimental part of this paper presents the results of laboratory flotation tests of phosphate ore
contact usSingle and mixed mineral flotation behavior and the mechanisms for the loss of selectivity in 1:1 and 95:5 apatite:dolomite mineral mixtures are presented. Loss of selectivity in mixed mineral systems is attributed to depletion of oleate ions available for adsorption by bulk precipitation with calcium and magnesium ions dissolved from dolomite.Flotation after two-stage conditioning was found ...
contact us· In this study, apatite, ilmenite, quartz, rutile, and zircon were chosen as associated minerals due to their occurrence with monazite in mineral deposits. The separation by flotation of monazite from these minerals relies on the difference in the surface chemistry profile of the minerals.
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