method of extraction used for chromite

Solvent extraction | chemistry |

Solvent extraction processes are employed primarily for the removal of constituents that would have an adverse effect on the performance of the product in use. An important application is the removal of heavy aromatic compounds from lubricating oils.

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Process for extracting chromium from chromium ores - Produits ...

Process of extracting chromium from a chromium ore or concentrate by oxidation, which comprises suspending the chromium ore or concentrate in a bath of molten salts and introducing an oxygen-containing gas into the suspension in a sufficient amount and for a sufficient amount of time to oxidize chromium therein.

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US8192705B2 - Methods of treatment of chromite ore processing ...

Methods to reduce hexavalent chromium (Cr(VI)) in chromite processing wastes include one or more of the following steps: contacting the chromite processing wastes with an oxygen scavenger or chemical reducer; permitting the chromite processing wastes to react with the oxygen scavenger or chemical reducer; contacting the chromite processing wastes with ferrous ion; contacting the chromite ...

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A cleaner method for preparation of chromium oxide from ...

Two kinds of chromite with various Fe(II) contents were employed to verify the proposed speculation on the role of Fe(II) in the leaching process of chromite. Moreover, the subsequent extraction of chromium from the leachate was studied, and a new process for chromium oxide production from chromite is put forward in this paper. 2.

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Chromite Beneficiation Process - Mineral Processing & Metallurgy

The Chromite Extraction Flowsheet Chromite Ore Crushing The crushing section for this 250 ton per day chrome mill consists of a coarse ore grizzly, a coarse ore bin with pan feeder to a 1'8″ reduction crusher and a crusher discharge conveyor to a crushed ore bin.

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Chromium Chemistry -

Extraction Chromite, FeCr 2 O 4, is the most commercially useful ore, and is extensively used for extraction of chromium. Chromium is produced in two forms: (Chemistry of the Elements, Greeenwood and Earnshaw, Chapter 23). (a) Ferrochrome by the reduction of chromite with coke in an electric arc furnace.

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Chromite Mining Process | Mining | Ore - Scribd

Chromite Mining Process. 1 What is Chromite? ... Extraction of the Chromite Ore Both surface and underground mining methods will be used to mine the chromite. Mining ...

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Chromium processing |

The use of chromite as a refractory is next in importance to the metallurgical applications of chromium. A typical analysis of a chromite suitable for refractory purposes is 38 to 48 percent Cr 2 O 3, 12 to 24 percent Al 2 O 3, 14 to 24 percent Fe 2 O 3, 14 to 18 percent MgO, and less than 10 percent SiO 2.

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Maceration, Percolation and Infusion Techniques of Extraction ...

may be used for extraction instead of the costly rectified spirit. ¾ The detailed procedure is as follows: ¾After the imbibition stage the material is packed in a percolator.

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Chromite - Wikipedia

Chromite is an iron chromium oxide: FeCr 2 O 4.It is an oxide mineral belonging to the spinel group.Magnesium can substitute for iron in variable amounts as it forms a solid solution with magnesiochromite (MgCr 2 O 4); substitution of aluminium occurs leading to hercynite (FeAl 2 O 4).

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