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FIG, 6. Calculated and experimentally observed variations in KD, the partition coefficient of Fe and Mg between olivine and melt, as a function of pressure. - "Magma density at high pressure Part 2: A test of the olivine flotation hypothesis"
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The olivine/liquid peridotite density crossover is predicted to lie between 9 and 11 GPa, indicating that olivine flotation can operate at depths of 300–500 km in a molten …
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Influence of aluminum–sodium silicate on olivine flotation … DOI: 10.1016/j.mineng.2019.106008 Corpus ID: 203128200; Influence of aluminum–sodium silicate on olivine flotation with sodium oleate @article{Fang2019InfluenceOA, title={Influence of aluminum–sodium silicate on olivine flotation with sodium oleate}, author={Shuai Fang and Longhua Xu and Houqin Wu and …
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Olivine flotation provides an important constraint upon Earth evolution models that include extensive melting during early differentiation. It also provides a mechanism for concentrating …
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The physico-chemical interactions among minerals such as olivine, chromite and serpentine; the most commonly present ions in solution such as Ca and Mg; and flotation reagents such as EDTA and oleic acid were investigated. The study was conducted via release tests, electro-phoretic measurements and microflotation of selected minerals coming from the …
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olivine is subjected to flotation at an initial pH of 12 with an amine collectorfor the removal of serpentine;this isfollowed by the flotation of chromite at pH 3 with the same amine collector. In a typical procedure, 270 gltof amine is fed into the flotation medium in …
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Separation by flotation of the (GL30 Olivine-M4 chromite) system at 3.3% chromite added with 50 and 150 mg/L CTMAB at pH 11 without stirring; a) fraction of recovered particles in the froth vs ...
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FIG. 8. Densities of high Mg komatiite calculated with the Law Of Corresponding States (LOCS) observed and violated compared to densities of coexisting olivine. - "Magma density at high pressure Part 2: A test of the olivine flotation hypothesis"
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Read "Olivine flotation in mantle melt, Earth and Planetary Science Letters" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
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It is determined that olivine flotation and settling are rapid in a time period of only a few hours because viscosities are slightly greater than that of paraffin oil at room temperature. Some …
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FIG. I. Density of liquid An36Di64(mol percent) calculated at 1400°C using elastic parameters with the "Law Of Corresponding States" (LOCS) observed and violated, and shock wave data from RIGDEN et al. (1984). - "Magma density at high pressure Part 2: A …
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The selective flotation of ilmenite from olivine can be better achieved using an AWG as depressant rather than WG in the artificially mixed minerals flotation experiments. Batch flotation test ...
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Influence of particle size on flotation separation of ilmenite, olivine, and pyroxene Yaohui Yang 1, Longhua Xu 2, Shujun Liu 1, Jian Deng 1 ... For each test, 2.0 g mineral sample with desired particle sizes was added to a 40mL flotation cell. After the flotation pulp was conditioned to the desired pH, the desired dosage of reagents was
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Flotation of Gangue Minerals Associated With Chromite. Hallimond tube flotation response of olivine, diopside and hedenbergite was measured as a function of pH using SDS as collector in the absence of added multivalent inorganic ions and in the presence of Fe(II). Figure 26 shows flotation recovery data obtained on the olivine studied. Two ...
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The flotation recovery of ilmenite improves from 73.5% to 92.1% at a pH of 6.3, while that of olivine-pyroxene decreases from 59.6% to 44.6% (Parapari et al.,2017).
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A test of the olivine flotation hypothesis.", abstract = "It is demonstrated that the olivine flotation hypothesis is unconvincing for silicate liquids which compress according to the law of corresponding states. Although an olivine-liquid density crossover is invariably computed, it is located at P where equilibrium between the two phases is ...
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The experiments results indicate that the presence of fine-grained (-19 um) mineral particles is deleterious to the flotation of ilmenite, the ilmenite recovery decreases as the microfine grade content of pyroxene and olivine increases, distribution of narrow size minerals is beneficial to the minerals flotation performance, and the order of ...
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AND SULFONATE FLOTATION OF OLIVINE December 1968 Progress Report Lab Nos. 3258, 3274, 3283, & 3289 - Book 227 by J. Philip Neal Background and Scope 68-27-p This block of research and evaluation is a continuation of the ... Test No. 3258-30N; also in the Minerals Research Laboratory files, N. C. III section, under Olivine
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The rheology of the lithospheric mantle is fundamental to understanding how mantle convection couples with plate tectonics ().There is a growing consensus that the rheology of olivine at low temperatures relevant for …
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The rock type in Panxi area is changing from gabbro type to olivine pyroxene type, which makes it difficult for enterprises to obtain better beneficiation indexes at present. In order to solve this …
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Download Citation | Gangue Entrainment in Olivine Flotation: Effect of MIBC Dosage on the Mitigation of Lizardite Recovery | Background Olivine is an important industrial raw material especially ...
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Also present were traces of olivine, magnetite, pyroxene, and ankerite. An examination of the screened fractions indicated that locking of the chromite is present in all fractions, including the minus 400-mesh. ... The test procedure and results of a typical test are described below. Flotation procedure on the Billie sample was the same as ...
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The flotation recovery of fluorite and calcite with and without depressant SL was investigated by micro-flotation test. The mechanism of the depressant was studied through Fourier transform infrared spectroscopy (FTIR) analysis, contact angle analysis and X-ray photoelectron spectroscopy (XPS) analysis.
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Olivine flotation in the experimental komatiite commences at a pressure close to where the liquidus phase changes from olivine to denser garnet, leading to the possibility of …
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The flotation experiment for an artificially mixed ore, comprising ilmenite and titanaugite, was performed under optimized test conditions for single mineral flotation, and the testing result is depicted in Fig. 4. The dosage of APD utilized in the experiment was 100 mg/L, and the mass ratio of ilmenite to titanaugite in the artificially mixed ...
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It is demonstrated that the olivine flotation hypothesis is unconvincing for silicate liquids which compress according to the law of corresponding states. Although an olivine-liquid density crossover is invariably computed, it is located at P where equilibrium between the two phases is an assumption which is either in doubt or demonstrably in ...
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Due to the similar physical and chemical properties of ilmenite and olivine, separating them is challenging. The flotation process, with the use of collectors, is an effective method. In this study, a ternary collector consisting of aluminum ion (III), benzohydroxamic acid (BHA), and sodium oleate ( …
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Olivine flotation in the experimental komatiite commences at a pressure close to where the liquidus phase changes from olivine to denser garnet, leading to the possibility of density driven crystal sorting during fractionation. Molten peridotite (KLB-1) shows an isothermal compression (2000°C) of 0.065 g cm -3 GPa -1 in the interval 10 5 Pa to ...
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Agee and Walker (1988a) performed static compression sink/float experiments on komatiite to test the olivine flotation hypothesis (Stolper et al., 1981; Nisbet, 1982). Fig. 2 a summarizes the experimental compressions of komatiite melt done in the multi-anvil device at 8.4 and 9.3 GPa and in a piston-cylinder apparatus at 4.8 and 6.0 GPa. Using 1-bar calculated …
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Flotation using G30 Milled olivine and serpentine allows enrichment ratio of 1.25 to 1.5 only in the first half of the flotation test. Chromite separation from GL10 olivine, which is the finest mineral was observed to be of nil efficiency. Because a significant fraction of particles is below 20 µm in olivine GL10 and GL30 Milled, mineral ...
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From these compression curves, crystal–liquid density crossovers are predicted for the mantles of the Earth and Mars and a density crossover at the base of the upper mantle is predicted, which would produce a low-velocity zone at a depth of approximately 1200 km. Expand
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It is demonstrated that the olivine flotation hypothesis is unconvincing for silicate liquids which compress in observation ofthe law ofcorresponding states.Although an olivine-liquid density crossover is invariably computed, it is located at pressures where equilibrium between the two phases is an assumption which is either in doubt or ...
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In this work, the effect of acid surface dissolution on the flotation of ilmenite from Qara-aghaj (hard rock deposit located 36 km from Urmia in Azerbaijan province northwest of Iran) ore sample containing olivine and pyroxene as the main gangue minerals (Irannajad et al., 2014) is investigated.In this regard, the surface properties of ilmenite and gangue phases are studied …
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FIG, 2, Density of Kilauea 1921 olivine tholeiite calculated at 1400°C using elastic parameters with the "Law Of Corresponding States" (LOCS) observed and violated, and falling sphere data of fuJII and KUSHIRO (1977) and fuJII (1978). - "Magma density at high pressure Part 2: A test of the olivine flotation hypothesis"
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It is demonstrated that the olivine flotation hypothesis is unconvincing for silicate liquids which compress according to the law of corresponding states.
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The selective flotation of ilmenite from olivine can be better achieved using an AWG as depressant rather than WG in the artificially mixed minerals flotation experiments. Batch flotation test ...
WhatsApp: +86 18221755073