Minor and trace elements in olivines as probes into early …
The trace element composition of olivine is a rapidly growing research area that has several applications of great potential. Mantle olivines can be distinguished from volcanic olivines by lower concentrations of Ca (<700 ppm), Ti (<70 ppm), and often Cr.The melting of pyroxenites derived from recycled ocean crust can be recognized in volcanic …
Olivine flotation in mantle melt
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]. Olivine Wo ...
Gangue Entrainment in Olivine Flotation: Effect of MIBC …
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.
Influence of microwave irradiation on ilmenite flotation behavior …
In laboratory scale flotation experiments, when quartz is the main gangue mineral, the TiO 2 grade and recovery of flotation concentrate improved from 27.1% to 28.3% and 85.3% to 92.7%, ... The flotation behavior of olivine–pyroxene is somewhat similar to that of ilmenite. In strong acidic and alkaline solutions, the flotation recovery of ...
Flotation of chromite and serpentine
Subsequent flotation tests at natural pH on hot tailings samples with two stages of cleaning showed good upgrading, where a feed grade of 16.1 % Cr 2 O 3 after desliming was converted to a concentrate of 29.4 % Cr 2 O 3 at a yield, based on deslimed feed, of 28.6 % and a recovery of 52.4 %. The overall upgrade ratio in this case of 1.83 …
Influence of particle size on flotation separation of …
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 ...
Influence of aluminum–sodium silicate on olivine …
Fig. 3 shows the relationship between the concentration of sodium silicate and the olivine recovery. The flotation recoveries of olivine are approximately 80% …
olivine flotation concentrate
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 ilmenite and olivine. The studies on the beneficiation of onkilonite ore demonstrated that only a 40% grade of titanium concentrate and 36% of the recovery were obtained ...
Nickel Ore Beneficiation Plant
1. Copper-nickel sulfide ore. When the nickel content is more than 3%, it is a rich ore, which can be directly smelted;; When the nickel ore content is less than 3%, it is mainly accompanied by a large amount of metal mineral (pyrrhotite, pentlandite, chalcopyrite)and gangue minerals (olivine, pyroxene, plagioclase, talc, mica, quartz, etc.);; The most …
Static compression and olivine flotation in ultrabasic silicate …
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 ...
Selective flotation of ilmenite from olivine using the …
The minimum flotation recovery of olivine reached 2.46% when the AWG dosage was 2.5 × 10 − 4 M. The maximum recovery D-value between ilmenite and …
olivine flotation concentrate
best flotation of chromite thegurukulinstitutein The mean particles size of olivine fraction enhances the chromite flotation because of the additional contribution 3 rich concentrate high recovery values can be obtained by of olivine the separation is Flotation is another method to be used for the concentration . اتصل بنا
(PDF) Gold recovery from flotation concentrate …
The method for the recovery of gold from its flotation concentrate using acidic thiourea leaching followed by adsorption on an organosilicon polymer (PSTM-3C) was discussed in the present study.
Influence of aluminum–sodium silicate on olivine flotation …
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 ...
Recover Chromite by Flotation
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 …
Static compression and olivine flotation in ultrabasic silicate …
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 …
PCSIR Laboratories Key words: Description of sample.
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 ...
Hydroxamate vs. fatty acid flotation of iron oxide
The rougher concentrate was cleaned with an addition of 0.08 lb per ton frother with a conditioning time of lh min before reflotation. All of the recoveries and grades reported in Figs. 7-10 refer to the fin
9575 REPORT OF INVESTIGATIONS/1995
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
Flotation of chromite and serpentine | Semantic Scholar
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….
Platinum
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 …
Characterization of a Nickel Sulfide Concentrate and Its …
In anticipation of future demands, a comprehensive understanding of the chemical and mineralogical characteristics of nickel-bearing minerals is a prerequisite to devising effective nickel beneficiation methods. Of particular importance are markers in the mineralogy of the flotation concentrate that inform beneficiation strategies to improve …
Effect of acid surface pretreatment on the floatability …
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 ...
Flotation behavior and mechanism of ilmenite using
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% ...
Separations | Free Full-Text | Process Mineralogy of …
As olivine and ilmenite have similar flotation properties, this seriously affects the flotation separation of these minerals . Finally, pyrrhotite, ... Since sulfide affects the concentrate grade, separation is required during beneficiation. In addition, the sulfide minerals also contained a small amount of pyrites and (Fe,Mg) ...
Effect of acid surface dissolution pretreatment on …
The cell flotation experiments show that before surface dissolution, an optimal concentrate with 21.2% TiO 2 and 78.3% recovery is achieved using 1000 g/t …
Gangue Entrainment in Olivine Flotation: Effect of MIBC …
Background: Olivine is an important industrial raw material especially for metallurgical applications like foundry sand, refractory, slag conditioning, etc. Loss On Ignition (LOI) value (>1%) is the main specification of olivine ore/concentrate for those areas together with the chemical specifications. Objective: This flotation study was conducted in natural pH …
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