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The metallurgical industry uses chromite ore to produce chromium ferroalloys and metal. ... Chromite is used in the chemical industry to make sodium dichromate which is both a chemical industry product and an intermediate product used to make other chromium chemicals. ... Chromite is used in the refractory industry to produce refractory materials, including shapes, plastics, and foundry sands.
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: 100.00 % 100.00 % = TOTAL OXIDE
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The study aimed at investigating the chemical composition and microstructure of raw iron ore from the deposits in Muko area (south-western Uganda). The quality of this iron ore was evaluated to establish its suitability to serve as a raw material for iron production. Samples were taken from the six hills of Muko ore deposits and tests carried out to establish their composition and properties.
The primary chromium ore is the mixed metal oxide chromite, FeCr 2 O 4, found as brittle metallic black crystals or granules. Chromite ore is heated with a mixture of calcium carbonate and sodium carbonate in the presence of air. The chromium is oxidized to the hexavalent form, while the iron forms iron.
It is the main component of rust and bog iron ore. Goethite's hardness ranges from 5.0 to 5.5 on the Mohs Scale, and its specific gravity varies from 3.3 to 4.3. The mineral forms prismatic needle-like crystals ("needle iron ore"), but is more typically massive.
Chemical formula Description; Ore mineral: Hematite: Fe 2 O 3: Iron oxide: Magnetite: Fe 3 O 4: Primary iron oxide: Goethite: FeOOH: Most abundant iron oxyhydroxide with three subtypes: yellow ochreous has excess water and chemical impurities; brown, the most common variant, is stoichiometric; while vitreous is glassy and contains 2–9% SiO 2 + Al 2 O 3, either as an impurity or as submicron ...
A chromium oxide compound contains 104.0 grams of chromium and 48.0 grams of oxygen. What is the most likely empirical formula of this compound? Cr2O3. A 500.0 gram iron ore sample was determined to contain 242 grams of iron. What is the mass percent of iron in the ore? 48.4 g. How many atoms of lithium are in 18.7 grams? 1.62 x 10^24. The ...
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Chemical Formula: FeCr2O4, Iron Chromium Oxide. Class: Oxides and Hydroxides; Group: Spinel; Uses: The principle ore of chromium, as a refractory component, as a dye and as mineral specimens. Specimens. 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 ...
mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula Fe S2. Pyrite is considered the most common of the sulfide minerals. Pyrite's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of fool's gold.
Olivine, any member of a group of common magnesium, iron silicate minerals.. General considerations. Olivines are an important rock-forming mineral group. Magnesium-rich olivines are abundant in low-silica mafic and ultramafic igneous rocks and are believed to be the most abundant constituent of the Earth's upper mantle. Olivine also occurs in high-temperature metamorphic rocks, lunar ...
Out of the total world chrome ore output about 95% is used to produce ferrochrome for the metallurgical industry, with 2% used in chemical industry and the balance 3% in the refractory and foundry industry. Later majority of which is used in Cast Iron, Alloy Steels & Stainless Steel.
Nickel is a chemical element with the symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile.Pure nickel, powdered to maximize the reactive surface area, shows a significant chemical activity, but larger pieces are slow to react with air under standard conditions because an oxide layer ...
Ilmenite by itself is not a profitable iron ore as the titanium inhibits the smelting process. Ilmenite, hematite and corundum all have similar structures and belong to a more or less informal group called the Hematite Group with a general formula of A 2 O 3. The structure is composed of alternating layers of cations and oxygens.
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).
Extracting iron from iron ore using a Blast Furnace. The common ores of iron are both iron oxides, and these can be reduced to iron by heating them with carbon in the form of coke. Coke is produced by heating coal in the absence of air. Coke is cheap and provides both the reducing agent for the reaction and also the heat source.
May 28, 2018· If by chrome iron, you mean chromite ore ( FeCr2O4 ), then I'll give my best shot at explaining, since there aren't any answers yet! 1. The chromite ore is reacted with sodium carbonate or potassium carbonate in the presence of excess oxygen. The...
Apr 25, 2017· Iron has a chemical formula (Fe), and it is one of the most common elements in the world and forms 5% of the crust of the Earth. It ranks the fourth among the common elements after Oxygen, Silicon, and Aluminum. Iron forms a critical part of modern civilization and its use dates back to thousands of years.
Iron is a moderately reactive metal that is prone to combining chemically with nonmetals such as oxygen and carbon. When iron is mined or otherwise found in nature, it is typically found as a naturally occurring mineral. When iron ore is heated in the presence of a reducing agent such as carbon monoxide, it produces metallic iron.
Chemical Formula: FeCr 2 O 4: Composition: Iron chromium oxide, often with some magnesium, sometimes with aluminum. Forms a series with the rarer mineral Magnesiochromite. Variable Formula (Fe,Mg,Al)Cr 2 O 4: Color: Brownish-black to greenish-black: Streak: Dark brown: Hardness: 5.5: Crystal System: Isometric
Minerals are useful chemical compounds for making new materials that we can use ... Once the ore is on the surface, the process of getting the mineral you want out of .... In South Africa, this method is used to mine for iron, copper, chromium, .... and do not need to be crushed into powder, or involved in minerals extraction. Get price
Iron ore is a non-fungible commodity, and its quality varies. To help facilitate price adjustment for differences between expected and delivered product specifications, PRAs have developed value-in-use (VIU) indices for the key price-affecting chemical components of iron ore - iron.
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