Chrome Ore The only ore of chromium, the metal used to make stainless steel, nichrome and chrome plating.
What is Chrome Ore?
Chrome Ore is an oxide mineral composed of chromium, iron and oxygen (FeCr2O4). It is a dark gray to black in color with a metallic to submetallic luster and a high specific gravity. It occurs in basic and ultrabasic igneous rocks and in the metamorphic and sedimentary rocks that are produced when Chrome Ore-bearing rocks are altered by heat or weathering.
Chrome Ore is important because it is the only economic ore ofchromium, an essential element for a wide variety of metal, chemical and manufactured products. Many other minerals contain chromium, but none of them are found in deposits that can be economically mined to produce chromium.
Properties of Chrome Ore
Chrome Ore can be challenging to identify. Several properties must be considered to differentiate it from other metallic ores. Hand specimen identification of Chrome Ore requires a consideration of: color, specific gravity, luster, and a characteristic brown streak. The most important clue to identifying Chrome Ore is its association with ultrabasic igneous rocks and metamorphic rocks such as serpentinite.
Physical Properties of Chrome Ore
Chrome Ore is sometimes slightly magnetic. This can cause it to be confused with magnetite. Chrome Ore and ilmenite have very similar properties. Careful observations of hardness, streak and specific gravity are required to distinguish these minerals in hand specimens.
Chrome ore is also called the chromite sand, is a special foundry sand, natural spinel, of chromite on particle size by crushing, grinding, screening regulation, applicable to modelling (core) sand.Chrome ore according to the chemical composition is divided into level 2;level 1 cr2o3 45% or more;the secondary cr2o3 35% or higher.Chrome ore in casting production is mainly used for large steel surface sand, prevent casting surface adhering sand;secondly the grinding powder used in casting coating refractory aggregate;chrome ore is chilling material, when modelling (core) alternative part cold iron.
For drainage sand materials, casting, ceramic, glass and refractory, etc.Chromite sand applicable types: casting grade is special, special metallurgy level.Chrome ore in casting production is mainly used for large steel surface sand, prevent casting surface adhering sand;secondly the grinding powder for the refractory aggregate of foundry coating, chrome ore is chilling material, when modelling (core) alternative part cold iron.Chromite sand for casting coating, refractory materials, brake pads, high-performance ceramic materials, ceramic and glass colorant, friction material, chemical and metallurgical casting, etc.
1, in the building materials industry is mainly used in colored cement, color cement tile, color cement tile, glazed tile and floor tile, color mortar, color asphalt concrete, terrazzo, mosaic tiles, artificial marble and metope paint, etc.;
2, used in a variety of coatings to protect material and color, external walls including waterborne coatings, powder coatings, etc.; it also can be used in paint including epoxy resin, alkyd, amino and so on all kinds of primers and paint; can also be used for toy paint, decoration paint, furniture paint, electrophoresis paint and enamel. Iron red primer has the antirust function, can replace expensive red lead paint, save non-ferrous metals.
3, used for plastics coloring, such as thermosetting plastics and thermoplastic plastics, coloring and rubber products, such as automobile inner tube, inner tube, bicycle inner tube, etc.
4, used for advanced fine grinding materials, used in precision hardware instruments, such as optical glass polishing. High purity is the main basic material of powder metallurgy, used for smelting various magnetic alloy and other advanced alloy steel. By ferrous sulfate, iron oxide yellow or waste iron mixed by high temperature calcination, or directly from the liquid medium is made.
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Vanadium(V) shares properties with its source material. Vanadium is a chemical element with symbol V and atomic number 23. It is a hard, silvery-grey, ductile, malleable transition metal. The elemental metal is rarely found in nature, but once isolated artificially, the formation of an oxide layer (passivation) somewhat stabilizes the free metal against further oxidation Vanadium is electrically conductive and thermally insulating, and itâ??s harder than most metals and steel. It has good resistance to erosion and it is stable against alkalis and sulfuric and hydrochloric acids. It is oxidized in air at about 933 K(660 °C, 1220 °F), although an oxide passivation layer forms even at room temperature.
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1. Ferrochromium has a significant change in the corrosion resistance and oxidation resistance of steel.
2. Ferrochromium can improve wear resistance and high temperature strength.
3. Ferrochromium has a wide range of uses in foundry and steel industry applications.
