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 …
Gangue Entrainment in Olivine Flotation: Effect of MIBC …
Results: Finely ground soft lizardite adversely affected the olivine flotation in a way of entraining mechanically into concentrate. LOI value of concentrate was observed …
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 …
Effects of particle size on flotation performance in the separation …
In the flotation tests, potassium dichromate (K 2 Cr 2 O 7), sodium diethyldithiocarbamate (DDTC) and methyl isobutyl carbinol (MIBC) were separately used as the lead depressant, the copper collector and frother.All reagents for tests are analytical grade. Tap water was used for the lab flotation tests. The chemical analysis results of …
OneMine | RI 8502 Amine Flotation of Chromite Ores From …
Rougher flotation of ore containing abundant olivine upgraded the chromite from 23.4 to 29.6 percent Cr203 at a recovery of 89.4 percent. ... Flotation of a gravity concentrate containing 40.9 percent Cr203 and 4.4 percent SiO2 recovered 90 percent of the chromite in cleaner products containing 44.9 percent Cr203 and 0.63 percent Si02. The ...
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….
Effect of Oxidation on the Flotation of Chromite and …
In contrast, oxidation did not measurably affect olivine flotation. This suggested that controlled oxidation may improve selectivity in the flotation of chromite from olivine. …
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 …
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) ...
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 …
A review of mineral processing of ilmenite by flotation
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 ...
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 ...
Flotation
Flotation has been used by mineral and chemical engineers for the separation and concentration of aqueous suspensions or solutions of a variety of minerals, coal, …
Gangue Entrainment in Olivine Flotation: Effect of MIBC
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
How to Recover Chromite
The olivine grains were partially weathered to a mineral, probably serpentine, that was depleted in iron and magnesium and probably hydrated. The chromite content varied in the different size fractions and is listed in table 4. ... Flotation tests to concentrate chromite in the slimes from the pilot plant gravity circuit were successful on …
Mineralogical characterisation of naturally floatable gangue …
During the recovery of the valuable platinum group minerals and base metal sulphides in the Merensky Reef ore by flotation, a certain amount of naturally floatable gangue (NFG) is recovered, which dilutes the concentrate.Although talc is the only silicate mineral well known for it naturally floatable properties, the proportion of NFG recovered …
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 …
Effect of acid surface dissolution pretreatment on the …
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 ...
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 ...
(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.
Beneficiation of olivine ore by Na-oleate flotation
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.
olivine flotation concentrate
olivine flotation concentrate . Selective flotation of ilmenite from olivine using the . The microflotation 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. Influence of aluminum–sodium silicate on olivine flotation,As magnesium is a major constituent ...
Flotation behaviors of ilmenite, titanaugite, and forsterite using
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 ...
Comprehensive Recovery of Elemental Sulfur and Sulfide
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.
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.
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
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 ...
Flotation of Chromite Ore
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.
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 …
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