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chromite ore formula

Chromite | Physical - Optical Properties, Uses, Occurrence ...

Chromite is an oxide mineral that is formula: FeCr2O4. It is belonging to the spinel group. It is the most important ore of chromium.

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Chromite: The Only Mineral Ore of Chromium Metal Free Essay ...

Chromite is the only economic Chromium mineral, different compositional types of chromite will be seen in the nature, such as High-chromium Chromite, High-Iron Chromite and High-Aluminum Chromite. Chromite ore is deposited as Load chromite ore deposit ( Stratiform and Podiform), and Secondary chromite ore deposit (Laterite and placer) (Pedrotti ...

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Chromite (Cr2FeO4) | FeCr2O4 - PubChem

Chromite ore processing residue (COPR) containing measurable levels of hexavalent and trivalent chromium. [Cr (VI) and Cr (III), respectively] has been used to fill in low-lying areas in Hudson County, N.J.

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Chromite Ore - an overview | ScienceDirect Topics

Chromium metal is obtained commercially by heating chromite ore in the presence of carbon, aluminum, or silicon, and subsequent purification (ATSDR, 2000). Sodium chromate and dichromate are produced by roasting chromite ore with soda ash and are the primary chromium salts from which most other chromium compounds are derived (ATSDR, 2000).

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Chromite | mineral | Britannica

Chromite, relatively hard, metallic, black oxide mineral of chromium and iron (FeCr 2 O 4) that is the chief commercial source of chromium.It is the principal member of the spinel series of chromium oxides; the other naturally occurring member is magnesiochromite, oxide of magnesium and chromium (MgCr 2 O 4).

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major chemistry help needed!!!! moles and stoichiometry ...

According to the balalnced equation: 1mol Chromite will give 1 mol ferrochrome . I do not understand why choice b) is not correct. Wikipedia gives the formula for ferrochrome as FeCr and it also mentions: For the production of ferrochromium the chromite ore (FeCr2O4) is reduced with either aluminium or silicon in a aluminothermic reaction.

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CHROMITE (Iron Chromium Oxide) - Amethyst Galleries

Chromite is the most important ore of chromium from which it derives its name. Chromium is an important metal and has a wide range of industrial uses. Chromite forms in deep ultra-mafic magmas and is one of the first minerals to crystallize. It is because of this fact that chromite is found in some concentrated ore bodies.

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Potassium Dichromate - Preparation, Properties, Formula ...

The preparation of potassium dichromate is commonly done by using chromates and these chromates are formed by the reaction of chromite ore with sodium/potassium carbonate. Chemical Formula and Molecular Structure. The chemical formula for potassium dichromate is K 2 Cr 2 O 7 and the molar mass is calculated to be 294.185 g/mol. It is an ionic ...

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Chromite - Department for Energy and Mining

Chromite, a brownish black cubic mineral belonging to the spinel group, is the only ore mineral from which metallic chromium and chromium compounds are obtained. It has the chemical formula FeCr 2 O 4, and a theoretical composition of 32.0% FeO and 68.0% Cr 2 O 3. In its natural form it occurs in solid solution with other minerals in the spinel ...

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Grinding Size Estimation and Beneficiation Studies Based on ...

amounts were found in the ore structure together with serpentine group minerals. Chromite was generally observed as circular-angular. Scattered and banded chromite grains within the ores were partially fractured as a result of deformation. The average size of free and individual chromite grains was measured between 0.09 and 0.30 mm

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Chromite Mineral Data

General Chromite Information. Chemical Formula: Fe++Cr2O4. Composition: Molecular Weight = 223.84 gm. Chromium 46.46 % Cr 67.90 % Cr 2 O 3. Iron 24.95 % Fe 32.10 % FeO. Oxygen 28.59 % O. ______ ______.

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Chromite Value, Price, and Jewelry Information ...

Chromite is shiny and black, and makes a curious-looking cabochon with no special attraction. Occasionally, a cabochon has a reddish color. The stones have little value because the material is extremely abundant but are cut as curiosities only.

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Chromite | Mineralogy4Kids

Chromite The only ore of chromium, chromite is a major constituent in stainless steel. It is one of the first minerals to separate from a cooling magma, and large chromite deposits are thought to have been derived by such magmatic differentiation.

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Chromite Mineral Specimen For Sale - Dakota Matrix

Formula Fe 2+ Cr 2 O 4 (RRUFF) Locality Selukwe deposit, Great Dyke, Zimbabwe. A solid black granular & crystalline mass of Chromite ore. The USGS reports the following on chromium: Chromium is refined into ferrochromium used to produce stainless steel. South Africa is the leading chromite ore producer and China is the leading chromium ...

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Chromite: Mineral information, data and localities.

Chromite is the most important chromium ore mineral. It forms a complete solid solution series with many other members of the group, eg. in the Chromite-Hercynite Series, Chromite-Spinel Series, Chromite-Magnetite Series and the Chromite-Magnesiochromite Series.

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When chromite ore FeCr2O4 is fused with NaOH in presence of ...

When chromite ore FeCr 2 O 4 is fused with NaOH in presence of air, a yellow coloured compound (A) is obtained which on acidification with dilute sulphuric acid gives a compound (B). Compound (B) on reaction with KCI forms a orange coloured crystalline compound (C). (i) Write the formulae of the compounds (A), (B) and (C).

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Potassium Dichromate - Preparation, Properties, Formula ...

The preparation of potassium dichromate is commonly done by using chromates and these chromates are formed by the reaction of chromite ore with sodium/potassium carbonate. Chemical Formula and Molecular Structure. The chemical formula for potassium dichromate is K 2 Cr 2 O 7 and the molar mass is calculated to be 294.185 g/mol. It is an ionic ...

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Chromite Mineral Specimen For Sale - Dakota Matrix

Formula Fe 2+ Cr 2 O 4 (RRUFF) Locality Stillwater mine, Nye Co., Montana, United States. Rich, solid granular or crystalline aggregate of black Chromite ore. Though not producing Chromite ore, this large 30 mile complex of layer igneus mafic rock currently does not produce chromium ore. It is currently mined for its platinum and palladium only.

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Chromite Ore - an overview | ScienceDirect Topics

Chromium metal is obtained commercially by heating chromite ore in the presence of carbon, aluminum, or silicon, and subsequent purification (ATSDR, 2000). Sodium chromate and dichromate are produced by roasting chromite ore with soda ash and are the primary chromium salts from which most other chromium compounds are derived (ATSDR, 2000).

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CHROMITE (Iron Chromium Oxide) - Amethyst Galleries

Chromite is the most important ore of chromium from which it derives its name. Chromium is an important metal and has a wide range of industrial uses. Chromite forms in deep ultra-mafic magmas and is one of the first minerals to crystallize. It is because of this fact that chromite is found in some concentrated ore bodies.

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