10 Citations. Explore all metrics. Abstract. Some unusual density relations between olivine and coexisting liquid in the system fosterite-fayalite are reported. At 1 atmosphere …

Static compression and olivine flotation in ultrabasic silicate liquid. CB Agee, D Walker. Journal of Geophysical Research: Solid Earth 93 (B4), 3437-3449., 1988. 203. 1988. The effect of pressure, temperature, oxygen fugacity and composition on partitioning of nickel and cobalt between liquid Fe-Ni-S alloy and liquid silicate: Implications ...

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 ...

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 ...

Flotation of Olivine and Diamond in Mantle Melt at High Pressure: Implications for Fractionation in the Deep Mantle and Ultradeep Origin of Diamond. Eiji Ohtani, Eiji Ohtani. Institute of Mineralogy, Petrology, and Economic Geology, Tohoku University, Sendai, Japan.

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 …

The flotation of the unreacted olivine was tested as a first flotation step, which was simulated by flotation of raw input material, the pure Norwegian olivine <20 µm with dodecylamine as collector, MIBC as frother and at neutral pH. This flotation test resulted in a recovery of up to 94.5%. To determine the effect of dodecylamine on the ...

The single mineral flotation test was prepared by adding 3.0 g of minerals to 30 mL of solutions. After adding the desired amount of reagents, froth flotation was carried out during which a concentrate was collected. The floated and unfloated particles were collected, filtered, and dried. The flotation recovery was calculated based on solid ...

Geometallurgical testing that is performed to predict flotation performance achievable by an ore type in an existing flotation circuit or proposed flotation circuit design often …

The zeta potential testing results showed that surface potential of the ilmenite treated with Na 2 S 2 O 8 and NaOL was negatively migrated in the ... Effect of acid surface dissolution pretreatment on the selective flotation of ilmenite from olivine and pyroxene. International Journal of Mineral Processing, Volume 167, 2017, pp. 49-60. …

Fig. 2 a shows the effect of different silicate minerals (serpentine, pyroxene, olivine and quartz) on pyrite flotation as a function of PAX dosage at pH 9. The concentration of pyroxene, olivine and quartz was added at 2.5 g/L. The flotation of pure pyrite under different pHs is also shown in Fig. 2 a for comparison.

Olivine flotation provides an important constraint upon Earth evolution models that include extensive melting during early differentiation. It also provides a mechanism for concentrating high Mg/Si olivine in the upper mantle without unduly perturbing other geochemical parameters. A full evaluation of the physical and geochemical consequences ...

All three meteorites have olivine grains and fragments that are forsteritic and contain low CaO (average of 0.06 ± 0.04 wt%) and Cr 2 O 3 (average of 0.07 ± 0.05 wt%) relative to olivine in ...

FIG 1 - A bottom driven laboratory flotation cell supplied by Runge Engineering. A typical test involves washing an ore pulp sample into the laboratory cell. Make-up water is added to achieve the desired volume. The impeller is started and set to the desired speed.

The amount of NFG recovered in a batch flotation test (Fig. 1) with depressant addition is relatively negligible (< ... Both olivine and orthopyroxene fall into this category of minerals, although given the greater abundance of orthopyroxene in the feed and concentrates relative to olivine, the focus here is on orthopyroxene. ...

The influence of acid surface dissolution as a pretreatment method on the improvement of ilmenite selective flotation from olivine-pyroxene was studied by carrying out the flotation experiments in micro and laboratory (flotation cell) scales. The microflotation experiments show that after surface dissolution, the flotation recovery of …

Piston-cylinder techniques have been used to observe static compressions of ultrabasic silicate liquids to 6 GPa and 2000°C. Compressions are measured by bracketing sinking and floating of olivine crystals of known density at run conditions. Komatiite, peridotite, and their liquid mixtures with Fe2SiO4 all show constant density changes with pressure of ≅ …

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 Kaiqian Shu and Zhoujie …

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 …

According to the so-called olivine flotation hypothesis, basic silicate liquids become denser than coexisting ultramafic crystalline peridotites at high pressures through their higher compressibility. Therefore, the olivine, crystallizing from a global magma ocean, settles to a neutrally buoyant zone at about 250 km depth dividing the molten ...

DOI: 10.1016/J.MINPRO.2017.07.017 Corpus ID: 103176271; Effect of acid surface dissolution pretreatment on the selective flotation of ilmenite from olivine and pyroxene @article{Parapari2017EffectOA, title={Effect of acid surface dissolution pretreatment on the selective flotation of ilmenite from olivine and pyroxene}, author={Parisa Semsari …

Olivine flotation and settling are rapid in a time period of only a few hours because viscosities are a little greater than that of paraffin oil at room temperature. Some adcumulate textures with good triple junction grain boundaries are developed. General observations of differentiated magmatic systems on a number of scales and experimental ...

The micro-flotation results indicate that the AWG at a molar ratio 1:3 of oxalic acid to water glass (WG) exhibits the maximum selective depression on olivine. The selective flotation of ilmenite ...

The olivine used here was the pristine mineral, i.e. not treated by flotation. Carbonation tests have been carried out during 90 min, at 175°C and 100 bars with CO 2, plus N 2 as pressure driving gas. 600 g olivine were added to 1200 cm 3 solution of 0.64 M sodium hydrogencarbonate, 0.5 M oxalic acid and 0.01 M ascorbic acid.

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 results indicate that, compared with the depressant WG, the depressant AWG not only increases the recovery and grade of the Ti concentrates by …

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 …

The maximum perturbation of δ 26/24 Mg in the melt is dictated by the contrast in Mg# and the melt–olivine ratio, but for all scenarios modelled here (melt/olivine = 0.5–5.0), a single ...

The test procedure and results of a typical test are described below. Flotation procedure on the Billie sample was the same as for the George Len sample, except that a larger amount of slimes present made more reagent necessary, and no sulfuric acid was added during the rougher flotation step. ... The olivine ranged in color …

Abstract. Piston-cylinder techniques have been used to observe static compressions of ultrabasic silicate liquids to 6 GPa and 2000°C. Compressions are measured by …

The research results of this paper deepen the understanding of the olivine type ilmenite resources in Panxi area, enrich the theoretical system of flotation separation of …