Chromium is mined as chromite ore. Either as minerals with iron or magnesium. Chromite can be found mostly in South Africa, while Kazakhstan, India, Russia, and Turkey are also sizeable producers.
Chromite deposits are mined by both underground and surface techniques. After excavation, the minerals are smelted in a furnace. Finely divided ores do not smelt efficiently, so a number of processes are used to counteract. Fines can be blended with fluxes and coke (the principal source of carbon) and then preheated before being charged into an electric smelting furnace.
After smelting the ore is refined at 2,080° C (3,775° F) temperatures with100 kilopascals pressure in a pressure chamber.
Chromium fluorides are: Chromium difluoride: CrF2 Chromium trifluoride: CrF3 Chromium tetrafluoride: CrF4 Chromium pentafluoride: CrF5 Chromium hexafluoride: CrF6
Another chemical name is chromium trichloride or chromic chloride. Chromium(III) chloride is a chemical name as well.
This compound is chromium hydroxide.
Some chromium compounds: chromium bromides, chromium chlorides, chromium fluorides, chromium iodides, potassium dichromate, sodium chromate, chromium oxide, chromium sulfide, etc.
Chromium has several valence states, only one of which is Chromium III. States 2, 3, and 6 are most common but 1, 4, and 5 are possible. Total chromium means the amount of chromium in all valence states.
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The stable isotope of chromium is chromium-52. Other isotopes of chromium include chromium-50, chromium-53, chromium-54, and chromium-55, but not chromium-151.
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Chromium is a 3d element. chromium is a metal.
Chromium fluorides are: Chromium difluoride: CrF2 Chromium trifluoride: CrF3 Chromium tetrafluoride: CrF4 Chromium pentafluoride: CrF5 Chromium hexafluoride: CrF6
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