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Flotation of Chromite Ore

2017-6-5  Rougher flotation of a chromite ore containing abundant serpertine increased the grade form 19 to 41 percent Cr2O3 at a chromite recovery of 89.6 percent.

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FLOTATION BEHAVIOR OF SUDANESE CHROMITE ORES

2014-6-28  There are two general types of methods for separating chromium ore (chromite) values from associated gangue minerals by froth flotation techniques. In the first method chromite ore which has been deslimed is subjected to flotation at a pH of 1.5 to 5.5 with a long chain fatty acid collector as reported by Havens (1946). The selectivity of the process is enhanced by adding a soluble fluoride compound such as hydrofluoric acid, sodium fluoride or sodium silicofluoride in the flotation medium. The flotation

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Recover Chromite by Flotation 911 Metallurgist

2021-4-6  Flotation can be used to recover chromite from many fine-grained disseminated ore types without prior desliming of the ground pulp. Of the seven samples tested, all but the altered feed to the Mouat fine table section responded to flotation for selective recovery of chromite.

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Flotation of chromite and serpentine ScienceDirect

2007-6-15  It is well-known that flotation of chromite and serpentine is very difficult, especially in oleate flotation, due to similar surface properties of both minerals and to the ions such as Mg 2+ deriving from the ore and depressing the adsorption of RCOO − ions on the chromite surface . Modifying agents may be used to increase selectivity.

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The flotation behaviour of chromite with respect to

1999-10-1  Chromite is one of the main gangue consituents of UG2 ore and it is essential that the amount of chromite reporting to the concentrate during flotation be minimised since it is detrimental to the subsequent smelting operations. It is generally considered that chromite is naturally hydrophilic and only reports to the concentrate by entrainment.

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The flotation behaviour of chromite with respect to

Chromite is one of the main gangue consituents of UG2 ore and it is essential that the amount of chromite reporting to the concentrate during flotation be minimised since it is detrimental to the subsequent smelting operations. It is generally considered that chromite is naturally hydrophilic and only reports to the concentrate by entrainment.

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How to Recover Chromite

2017-10-21  The objective of flotation studies was to improve the overall chromite recovery by flotation of chromite in the slimes from the gravity concentration circuit. Smith showed that an ore containing serpentine as the primary gangue mineral was amenable to concentration by flotation using a cationic collector with the pH modified to below 2.5 with sulfuric acid (H2SO4).

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Five Chrome Extraction Process to Teach you the

2020-9-25  At present, the common chrome extraction processes mainly include gravity separation, magnetic separation, electric separation, flotation, gravity-magnetic separation process. Below, let's take you to learn about each chromite ore processing process. Use the table of contents below to navigate through the guide: 01 Gravity Separation

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The Characterisation of a Two Stage Flotation Circuit

2020-12-8  chromite recoveries was determined by sampling around the unit. The changes in ore floatability characteristics were monitored by carrying out batch flotation tests on samples

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FLOTATION BEHAVIOR OF SUDANESE CHROMITE ORES

2014-6-28  FLOTATION BEHAVIOR OF SUDANESE CHROMITE ORES 651 2. EXPERIMENTAL 2.1 Materials 2.1.1Chromite Ore Sample A chromite ore sample about (250 kgs) of low grade ore was collected from Chickay mines, at the Ingassana Hills. A high grade chromite ore sample (10Kg) and a

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Flotation of chromite and serpentine ResearchGate

Flotation of chromite and serpentine The world supply and reserves of chromite or chrome ore (FeCr2O4) have been dominated mainly by South Africa and the ex-USSR, which made chromite a

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THE FLOTATION OF SOUTH AFRICAN CHROMITE ORES

2014-5-14  Keywords: Flotation, chromite ore, pH, anionic collector, separation index 1. INTRODUCTION Chromite is an iron chromium oxide (FeCr 2 O 4) mineral belonging to the spinel group [1]. The only ore of chromium is chromite ore which ferrochromium and metallic chromium are produced from it by extracting processes.

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The flotation behaviour of chromite with respect to

1999-10-1  Chromite is one of the main gangue constituents of UG2 ore, 1177 1178 Q.I. Wesseldijk et al. making up 20 to 60% by mass of the ore. Although the main minerals targeted are the base metal sulphides; pyrrhotite, pentlandite and chalcopyrite (Liddell et al., 1986) a certain amount of chromite reports to the flotation concentrate.

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Chromite Flotation Froth Flotation (Sulphide &

2021-6-27  Actually chromite flotation should be similar to magnetite/ hematite ore flotation. They use amines and a reverse flotation mode. Rahil Khan. 5 years ago. Rahil Khan 5 years ago. Like. I'll probably try PGM float than gravity separation. I believe we have the reagents available here. The grain size are coarse, the particle size needed for

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Selective Flocculation of Chromite Tailings

2021-1-23  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 the industry to utilize these low-grade ores and tailings. Several attempts were taken to upgrade the low-grade chrome ores and tailings using different gravity separation methods, magnetic separation methods, flotation, etc.

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US2469422A Selective flotation of chromite ores

US2469422A US514987A US51498743A US2469422A US 2469422 A US2469422 A US 2469422A US 514987 A US514987 A US 514987A US 51498743 A US51498743 A US 51498743A US 2469422 A US2469422 A US 2469422A Authority US United States Prior art keywords treatment concentrate pulp flotation froth Prior art date 1943-12-20 Legal status (The legal status is an assumption and is not a

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Surface chemical mechanisms of inadvertent

2010-2-19  Chromite (75–150 µm) from flotation of UG2 ore has been similarly examined. Statistical comparison of ToF-SIMS analysis of particles from concentrate and tails reveals no significant difference in Cu, Pb, Ni and collector (IBX and DTP) signals between these streams but surface exposure of Mg and Si is favoured in the concentrate.

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Effects of frother type and froth height on the

About 70% of the UG2 reef consists of the gangue mineral chromite (FeO · Cr 2 O 3).In the processing of UG2 ore by flotation for the recovery of platinum group elements (PGEs) the presence of chromite in the concentrates can cause serious downstream processing problems and a grade of less than 3% Cr 2 O 3 is sought. This constrains operating procedures and compromises optimum recovery of the

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Five Chrome Extraction Process to Teach you the

2020-9-25  Flotation process. At present, we can use the flotation process to recover the chromite with fine grain size (-100um) after the gravity separation. The results show that Mg2+ and Ca2+ can inhibit the chromium ore, and the inhibition of Mg2+ is influenced by the type of anions in the slurry.

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THE FLOTATION OF SOUTH AFRICAN CHROMITE ORES

2014-5-14  Keywords: Flotation, chromite ore, pH, anionic collector, separation index 1. INTRODUCTION Chromite is an iron chromium oxide (FeCr 2 O 4) mineral belonging to the spinel group [1]. The only ore of chromium is chromite ore which ferrochromium and metallic chromium are produced from it by extracting processes.

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Amine For Chromite Ores Processing By Froth Flotation

Jun 14, 2012 In a flotation process, the ore is typically crushed and wet ground to obtain a pulp. The main alternative technique in froth flotation is "reverse flotation. fluorspar, iron ore, chromite, scheelite, CaCO2, MgCO2, apatite, or ilmenite. dosage of other more expensive collectors in the amine flotation of KCl. Read more

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INVESTIGATION OF CHROMITE FLOTATION FROM

the research was carried out on two chromite samples with olivine gangue mineral (mainly type forsterite) from the two biggest and most representative deposits of the region. the serpentine percentage was below 10%. ore samples assay in cr2o3 were 15% and 12% respectively. the flotation tests were carried out in denver flotation machine, with

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dolomite ores separation from chromite ores by froth

dolomite ores separation from chromite ores by flotation. chromite ore gravity separation baasrodeva be. Titanium ore mineral processing plant widely used in titanium ore tungsten tin gold iron 2 to recommend kind of machine and machine model for ore separation We can offer complete sets of selecting iron gold copper tungsten etc More

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Column Flotation of Chromite and Fluorite Ores

Column flotation of undeslimed chromite ore also produced results superior to those attained with conventional flotation. Column flotation of fluorite ore produced a 90.9 % CaF2 rougher concentrate at 86.8 % recovery, compared with a 67 % CaF2 rougher

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Chrome Ore Beneficiation Process Chromite

2019-5-15  3.1 Chrome magnetic separation process. The chrome raw ore is a flotation tail ore, which is mainly formed in the chromite, and the chromite is the target recovering mineral. The dissociation degree of ferrochromium ore is low, and it has a weak magnetic property. First of all, magnetic separation processing to separate chromite.

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Acidic medium flotation separation of chromite from

1997-11-1  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 selected minerals coming from the Kukes deposit in Albania.

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Surface chemical mechanisms of inadvertent recovery

Abstract In the UG2 ore (Bushveld Complex, South Africa) flotation, normally more than 3% of the gangue minerals, principally chromite with talc and pyroxene, report to the concentrate diluting the PGM recovery and contributing to subsequent processing costs. Previous studies have identified residual talc-like layers on orthopyroxene surfaces in Merensky ore flotation contributing to

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Development of PGMs and Chrome Extraction Circuit

2012-5-23  2 ore as the run of mine to recover PGMs and all ore is beneficiated using conventional crushing, milling, and flotation processes. There is a chrome plant that is installed in the middle of the flotation circuit in order to benefit the increased in PGMs recovery from secondary circuit by

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A Process Mineralogical Evaluation of Chromite at the

Chromite is a member of the spinel group and is the only economically important ore mineral of chromium. It is used extensively by the metallurgical industry as feedstock for ferroalloy production [1,2,3,4].Chromite ore is commonly classified into different grades based on the Cr/Fe ratio as well as the Cr 2 O 3 content. These being metallurgical grade, chemical grade and refractory grade [].

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