The flotation efficiency of phosphate ores of igneous origin is influenced by the mineralogical composition of the ore that feeds the concentration process. Several …
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For the activators on ilmenite flotation, most are metal ions but typically lead ions. ... Effect of acid surface dissolution pretreatment on the selective flotation of ilmenite from olivine and pyroxene, Int. J. Miner. Process., 167(2017), p. 49. ... Trial research of flotation for crude titaniferous concentrate, Hebei Metall., 2003, No. 1, p. 18.
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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 high Mg/Si olivine in the upper mantle without unduly perturbing other geochemical parameters. A full evaluation of the physical and geochemical consequences ...
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At present, industrial flotation process for ilmenite concentrate production is controlled within acidic pH region from about 6 to 2.5 in the roughing and cleaning stages, and this requires the collector to have a good capture ability even under strongly acidic conditions (Zhai et al., 2017). In Chinese deposits, titanaugite is the main gangue ...
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The flotation concentrate was subjected to hot filtration; 85.32% of the elemental sulfur in the concentrate was recovered at temperature 145 °C and time 2 h, and the purity of obtained elemental sulfur product reached 98.64%. The filter cake containing sulfide minerals was returned to the leaching stage for zinc recovery.
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A comparison between concentrate grade and solids content for a bank of cells for the same industrial data as given in Fig. 4 (b) is given in Fig. 6. Download : Download high-res image (114KB) Download : Download full-size image; Fig. 6. The relationship between concentrate solids content and grade for a bank of four industrial …
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The olivine ranged in color from green to yellowish-brown. The chromite is liberated essentially in the minus 100-mesh fraction; however, a small amount of chromite remains locked in the minus 325-mesh fraction. ... Chemical analysis of the chromite mineral prompted investigation of using flotation to produce a concentrate containing …
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The flotation behavior of pure chromite, pure olivine, and a chromite gravity concentrate were investigated. Minerals were heated in air at 50°C for 3 h, or at 150 or 250°C for 18 or 70 h to oxidize the mineral surfaces. The flotation response for the oxidized minerals was measured as a function of collector concentration and pH.
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Olivine is the predominant silicate mineral in the Mouat ore. Petrographic examination of the pH 2.0 flotation products showed olivine to be present in the concentrate while serpentine remained in the tailings. To increase the selectivity of Mouat ore to amine flotation of chromite, a selective olivine depressant must be found.
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The cell flotation experiments show that before surface dissolution, an optimal concentrate with 21.2% TiO2 and 78.3% recovery is achieved using 1000 g/t sodium oleate, 100 g/t Pb(NO3)2 (activator ...
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High temperature smelting with additives to dissolve Au from the gold concentrate into a molten copper was used in the research. Gold greatly dissolved at 1600°С under a CaO/SiO2 ratio of 1.25 ...
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time was 10 min. For the chromite flotation, the pH was lowered to 3 with H 2 S0 4 " The same reagents in quantities of 30 g/ton of collector and 10 g/ton of frother were used. In the cleaning stage the pH was changed to 5. The cleaner concentrate contained 22.8% Crp3' representing 60.6% re-covery. The flotation conditions and the metallurgical ...
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Objective: This flotation study was conducted in natural pH condition with Na-oleate as collector to clarify the effect of frother (MIBC) dosage on the LOI value of olivine concentrate. Methods: Characterization of ore sample for this study was made by XRD, XRF and petrographic analyses.
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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 results indicate that, compared with the depressant WG, the depressant AWG not only increases the recovery and grade of the Ti concentrates …
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Lesser clinopyroxene and occasional olivine as well as other hydrous silicate minerals (e.g. mica, talc, serpentine and clay minerals) also occur. ... Surface association of the different liberation classes of talc shown for Concentrate 3 from batch flotation tests performed with (a) and without (b) the addition of depressant. ...
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Improving the Quality of Ferruginous Chromite Concentrates Via Physical Separation Methods. The low chromium-to-iron ratio of chromite ores is an important issue in some chromite deposits. The value of the chromite ore is indeed dictated in the market by its iron, as well as its chromium….
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In laboratory scale flotation experiments, when quartz is the main gangue mineral, the TiO2 grade and recovery of flotation concentrate improved from 27.1% to 28.3% and 85.3% to 92.7% ...
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The flotation recoveries of olivine are approximately 80% without the addition of sodium silicate, after which the olivine recovery decreases gradually and …
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Ii I! il I',I " U I, J. 'I CONTENTS Page Abstract ...
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In contrast, oxidation did not measurably affect olivine flotation. This suggested that controlled oxidation may improve selectivity in the flotation of chromite from olivine. This concept was tested using a chromite gravity concentrate. Both flotation recovery and chromium oxide grade increased
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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 ...
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Taki GULER. Ercan POLAT. PDF | On Jun 17, 2015, Taki Güler and others published Beneficiation of olivine ore by Na-oleate flotation | Find, read and cite all the research you need on...
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The basic theoretical system of flotation separation technology for olivine pyroxene type ilmenite was formed by studying the surface properties of minerals and the interaction between flotation reagents and mineral particles. It is of great significance on both theory and practice to solve the flotation separation issue of olivine pyroxene ...
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The results of the artificially mixed minerals flotation experiment demonstrate that the concentrate of TiO2 grade increases from 16.92% to 30.19% at pH 5.4, which represents the appropriate ...
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The tenor of a Stillwater rougher concentrate is compared in table 7 with values reported for a flotation cleaner concentrate produced at a Merensky Reef concentrator, Republic of South Africa. The considerably higher palladium-to-platinum ratio of the Stillwater concentrate compared to the Merensky concentrate was the result of …
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The results of the artificially mixed minerals flotation experiment demonstrate that the concentrate of TiO 2 grade increases from 16.92% to 30.19% at pH 5.4, ... Because the collectors may react with the Fe and Mg on the olivine surface and improve the flotation recovery of olivine, it is difficult to achieve the effective separation of ...
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Olivine flotation at - 8.4 GPa can occur in komatiite only at subliquidus temperatures, after sufficient garnet 35 25 Y Komatiite 1900 (a) 321 crystallization has taken place. Fractionation of garnet from komatiite produces magmas which approach peridotitic in composition and have olivine as a liquidus phase at higher pressures [8]. …
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Olivine concentrate obeying the specifications of metallurgical applications could be obtained at suitable MIBC dosage and flotation time. Discover the world's research 20+ million members
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A typical mineralogy of the flotation concentrate blend is shown in Table 2 . Eksteen (2011) [ 8 ] has given the fractions of typical minerals in the UG2 and Merensky concentrates. ... Olivine flotation provides an important constraint upon Earth evolution models that include extensive melting during early differentiation. It also provides a ...
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The final tailing was rejected in the cobalt-nickel circuit. The flotation pilot plant is shown. Results typical of a single shift during the pilot run are summarized. The recoveries of lead and copper were 87.1% and 81.6% in a concentrate analyzing 20.6% copper, 10.1% lead, 0.99% nickel, and 0.77% cobalt.
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