Cromite Ore Flotation 039
Flotation of Chromite
This paper reviews the literature relating to the flotation of chrome spinel and presents a considered approach to the development of a robust flotation method to separate chrome …
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An Investigation Into The Role Of The Froth Phase In The Flotation …
The control of the amount of chromite reporting to the concentrate during the flotation of UG2 ore is of critical importance since its presence affects the downstream smelting process. It is generally reported that the main mechanism responsible for chromite recovery is through entrainment. This is reflected in analyzing the solids and water recoveries. These in …
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US2469422A
a selective froth flotation process for the treatment of chromite ores having low grade chrome spinels, Zircon, staurolite, ilmenite, magnetite, garnet, quartz, epidote, olivine and alteration products as inclusions which comprises subjecting a pulp of such an ore to an initial blunging treatment in the presence of a soluble fluosilicate-forming substance, partially neutralizng the …
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Chrome ore beneficiation challenges & opportunities – A …
Abstract. Supply of world chromite (chrome ore) has come under severe pressure over the past year driven by strong demand for ferrochrome used in ferroalloy production for …
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Challenges in processing nickel laterite ores by flotation
It should be added that segregation of laterite ores prior the flotation process has shown some improvement in upgrading nickel. The segregation process relies on the addition of calcium chloride or sodium chloride and carbon allowing the formation of nickel and iron chlorides at temperatures between 900 and 1150 °C. Iwasaki et al., (1961) and Nagano et al., (1970) …
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FLOTATION BEHAVIOR OF SUDANESE CHROMITE ORES
This study is concerned with the processing of low grade chromite ores, Ingassena Hills, Sudan, by froth flotation techniqu es. For this purpose, representative samples were taken from four differe nt mines. Mineralogical examinations indicated that, the majo r minerals are chromite and serpentine. Olivine, iron oxides and t alc have been identified as minor minerals. …
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Column Flotation of Chromite and Fluorite Ores
AbstractThe Bureau of Mines investigated column vs conventional flotation of chromite and fluorite ores. Fine-bubble column flotation of deslimed chromite ore produced a 44.7 % Cr2O3 rougher concentrate at 87.1 % recovery, whereas conventional flotation produced a 40.4 % Cr2O3 concentrate at 85.4 % recovery. Column flotation of undeslimed chromite ore also …
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Table 1 . Size wise chemical analysis of the chromite ore
Percentage chromium oxide is improved upto 49% with 63% of recovery while raw chromite ore contained only 34.2% Cr2O3. Author concluded that separating the materials into size fraction without ...
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PGM recovery from chromite tailings a new art or more …
The rougher flotation kinetics of the two ore bodies also differ slightly with the LG ores showing a much faster and higher rougher recovery compared to MG ores. Figure3: Rate kinetics for Rougher ...
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(PDF) Chromite Ore Mining and Associated Factors in the …
Three-fourths (76.5%) were extracting chromite ore through partnerships, 45.1% of them had four partners. The leased area extended from less than 1 acre to 875 acres. All mines were located in the ...
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Developing an optimum beneficiation route for a low-grade chromite ore
The column flotation method was a lso inve stigated for the recovery of . ... Chromite ore is geologically associated with gangue materials which have lower density compared to pure chromite (FeO ...
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The effect of a copper sulphate addition on the recovery of chromite …
Chromite and talc are two major gangue minerals in platinum bearing UG2 ore processed from the Bushveld Complex in South Africa. During flotation, talc is effectively depressed by the addition of depressants. Chromite, on the other hand, is considered to be hydrophilic, its recovery is believed to follow water recovery and therefore recovered by entrainment only.
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Flotation of Chromite Ore
The chromite was floated in three rougher stages with a total of 0.6 pound Arosurf MG-83A per ton of ore. Figure 1 illustrates flotation response as a function of pH. One small …
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Flotation of chromite and serpentine
Keywords: Chromite; Flotation; Modifier; Separation; Serpentine 1. Introduction The world supply and reserves of chromite or chrome ore (FeCr2O4) have been dominated mainly by South Africa and
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A reviewofthedepositsandbeneficiation of lower …
Flotation techniques could notberecommended owingtothelowrecoveries (57per cent). The best flotation concentrate contained 36per centCrZO3bymass. Considerable beneficiation …
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Challenges Related to the Processing of Fines in the …
An investigation into the role of froth phase in controlling chromite in the flotation of UG2 ore using laboratory column flotation cell. Miner. Eng. 2013, 55, 125–131. [Google Scholar] Hay, M.P. A case study of optimizing UG2 flotation performance. Part 2: Modelling improved PGM recovery and Cr2O3 rejection at Northam's UG2 concentrator.
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Chromite Flotation
Hallimond tube flotation studies on chromite ore gangue minerals were performed. The particular minerals studied were olivine, diopside and hedenbergite. The initial flotation conditions are indicated in Table VII. Under such conditions, although less than expected, olivine flotation was satisfactory. However, the maximum flotation recovery ...
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Quantitative mineralogical characterization of chrome ore …
The tailing sample was beneficiated by hydrocyclone, tabling, wet high-intensity magnetic separation (WHIMS), and flotation in order to recover the chromite. A chromite concentrate with 45.29wt% Cr2O3 and a Cr:Fe mass ratio of 1.85 can be produced from these low-grade chromite ore beneficiation plant rejects.
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A study on the recovery of fine chromite from UG2 tailings
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 was slightly lower than those …
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Selective Flocculation of Chromite Tailings | Transactions of …
Odisha state is the major reserve of the chromite ore. Due to the extensive applications, high-grade chromite ore is getting depleted day by day. Now it is a challenge for …
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The Reduction of Chrome in UG-2 Flotation Concentrate by
Flotation concentrates derived from processing UG-2 ore are typically characterized by high chrome contents (>3 wt.%) which are not amenable to conventional PGM smelters.
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(PDF) Flotation of chromite and serpentine
However, especially, Na-Oleate flotation of a chromite ore containing serpentine instead of olivine is very difficult because both minerals exhibit almost similar surface properties with chromite ...
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(PDF) A Process Mineralogical Evaluation of Chromite at …
A process mineralogical study based on three texturally and mineralogically different chromite-bearing ore types at the Nkomati nickel mine was undertaken, with focus on chromite. Chromite is a by-product of the Ni-Cu-Co-PGE ore at Nkomati Nickel ... Pre-flotation of the MCHR ore was performed to assess recovery of Cr2 O3 relative to the MCHR ...
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[PDF] Flotation of Chromite as Pre-Treatment of Olivine …
DOI: 10.2174/11010001 Corpus ID: 45666605; Flotation of Chromite as Pre-Treatment of Olivine Before Carbonation for CO2 Sequestration @article{Turri2017FlotationOC, title={Flotation of Chromite as Pre-Treatment of Olivine Before Carbonation for CO2 Sequestration}, author={Laura Turri and Herv{'e} Muhr and Cristielen …
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FLOTATION BEHAVIOR OF SUDANESE CHROMITE ORES
Adequate degree of liberation of chromitewas obtained by grinding the ore to minus 180μm.Froth flotation was used to upgrade this chromite ore. ... Theseinclude the collector and depressant dosages, pulp pH, and conditioningtime. From an ore feed grading 20.27% Cr2O3, a chromite concentrateof 28.71% Cr2O3 with recovery of 94.54 % could be ...
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BENEFICIATION OF LANDI RAUD (MALAKAND, NWFP) …
BENEFICIATION OF LANDI RAUD (MALAKAND, NWFP) CHROMITE ORE A. Hafeez, Saqib Ahmad and K. Hussain PCSIR Laboratories, Lahore-54600 ... Recovery of chromite from the fines generated during the crushing and grinding of the ore has been attempted by the flotation technique. An overall recovery of 81 % with a concentrate grade of 43.4 % er203 has ...
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Chrome ore beneficiation challenges & opportunities – A …
The beneficiation studies of Suresh et al. (1981), concludes that low grade chromite ore of 16–25% Cr 2 O 3, of Sitampundi area of India, cannot be upgraded by using tabling and flotation techniques, to meet the metallurgical grade due to the intimate association of iron in the lattice of chromite.
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A study on the recovery of fine chromite from UG2 tailings
Abstract. The recovery of chromite from the tailings streams of South African UG2 platinum concentrators adds significant financial returns to these operations. Whilst the …
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Recover Chromite by Flotation
Flotation Gora Ore. Chemical analysis of the chromite mineral prompted investigation of using flotation to produce a concentrate containing 44 to 48 percent Cr2O3. …
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Flotation of chromite and serpentine
Chromite is an important strategic mineral usually associated with other gangue minerals, mainly silicates. The selective flotation of chromite minerals of any chromite ore have some difficulties due … Expand
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