mineral deposit magmatic cumulates britannicaopinion still remains open, but most geologists now agree that inplace crystallization and density currents are more important in the formation of magmatic cumulates than density sinking. three oxide ore minerals form magmatic cumulates chromite, magnetite, and ilmenite. the worlds largest chromite deposits are all magmatic cumulates; the production of chromite concentrate from magneticoct , · a chromite concentrate with 45.29wt% cr2o3 and a crfe mass ratio of 1.85 can be produced from these lowgrade chromite ore beneficiation plant rejects. view show abstractlow silica chromite sand cr2o3 46%we import natural chromite ore from south africa,then wash,drying,and sieve in china lianyungang prot. item index cr2o3 46.0% sio2 1.0% feo 26.5% cao 0.30% mgo 10.0% al2o3 .5% p 0.003% s 0.003% cr/fe 1.551 bulk density 2.53 color black ph 79 the amount of the acid 2 ml percent soil 0.1% percent moisture 0chromite chromite is found as orthocumulate lenses of chromitite in peridotite from the earth's mantle.it also occurs in layered ultramafic intrusive rocks. in addition, it is found in metamorphic rocks such as some serpentinites. ore deposits of chromite form as early magmatic differentiates. it is commonly associated with olivine, magnetite, serpentine, and corundum.density of chromite orechromite chromite mineral information and data.true chromite is common as inclusions in diamonds from kimberlites density 4.5 4.8 g/cm 3 (measured) (ore fault group of claims;density of chromite oreliquid density of chrome orechromite the only mineral ore of chromium metal. chromite is important because it is the only economic ore of chromium, 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.
how to recover chromiteoct , · the highest density minerals are least affected by the current of the wash water and so they are collected and moved to the leading edge of the riffles. the lower density particles tend to be washed over the riffles to the lower edge of the deck. tabling was tested as a method of primary concentration for each of the chromite ore samples.bulk density of chromite orethe leading world chromite ore producing countries in 08 were india (almost 4 mt), kazakhstan (more than 3 mt), and south africa (almost 10 mt). more than 94% of chromite ore production was smelted in electric arc furnaces to . get priceimprovement in crfe ratio of indian chromite ore forjan 03, · about 40% of the indian chromite ore reserves are suitable for metallurgical purpose due to higher crfe ratio. the present investigation emphasized on the liberation and beneficiation characteristics of indian chromite oreto improve the cr fe ratio. the off grade chromite sample ofsukinda region, india analysed 40.8% of cr 2 o 3 > with crfe ratio of 1.7 and 5.8% ofthe platinum group element deposits of the bushveldthe chromite ore itself is also currently subeconomic for chromium. the layer thickness and chromiumtoiron ratio are the two most important parameters in evaluating the economic potential of chromite deposits, and the chromitite layers of the bushveld complex generally decrease in this ratio upward, and are in the range 2.0 to 1.2 ( 10 ).chromite sand testing minerals techthe chromite sand. turbidity an indicator of the cleanliness of the chromite sand particle size distribution afs grain fineness number can influence packing density, permeability and surface finish of castings bulk density packing density can be important in some applicationschromite mineral databulk density (electron density)=4.54 gm/cc note specific gravity of chromite =4.80 gm/cc. fermion index fermion index = 0.04 boson index = 0.96 photoelectric pe chromite = .28 barns/electron u=pe chromite x relectron density= 83.03 barns/cc. radioactivitya process mineralogical evaluation of chromite at thechromite is a member of the spinel group and is the only economically important ore mineral of chromium. it is used extensively by the metallurgical industry as feedstock for ferroalloy production [1,2,3,4].chromite ore is commonly classified into different grades based on the cr/fe ratio as well as the cr 2 o 3 content. these being metallurgical grade, chemical grade and refractory grade .density of chromite ore at variouspositionswith rich ore mining, beneficiation and smelting technology and experience, we have completed the design and research of more than 2, mines, which can not only provide customers with reasonable process flow, but also provide customized equipment configuration. density of chromite ore
chromite (cr2feo4) crfeo4 pubchemrats were exposed to 0, 0.2, and 1 mg/cu m of chromite ore residue dust (mean diameter 3.3 mum) for 105 wk, and concn of chromium in organs and blood were det. the chromium concn in the lung, kidney, and spleen of rats exposed to 0.2 mg/cu m were 30, 279.2, and 56.9 ng/g, resp, and those of rats exposed to 1.0 mg/cu m were 87700, 80, and 382 ng/g, resp the concn in the liver, brain, andmolecular formula crfeo4chromite the only mineral ore of chromium metalwhat is chromite? chromite is an oxide mineral composed of chromium, iron, and oxygen (fecr 2 o 4).it is 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 chromitebearing rocks are altered by heat or weathering.foundry chromite sand haixu chromite sandapplication of chromite sand in foundry industry chromite sand, also known as chrome ore sand chinas chrome ore importing amount in half of according to customs statistics, in june , chinas chrome ore imports amounted to 1.2246 millionchromite chromium ore, properties, uses and occurrencejul 02, · chromite is an oxide mineral that an iron chromium oxide with formula fecr2o4. it is belonging to the spinel group. chromite is the most important ore of chromium. crystals are uncommon, but when found they are octahedral. chromite is usually massive or in the form of lenses and tabular bodies, or it may be disseminated as granules.chemical classification oxide minerals, spinel groupchromite ore visual bulk cargoesjun 22, · chromite ore. concentrates or lumpy, dark grey in colour. angle of repose not applicable. bulk density (kg/m3) 2222 to 3030. stowage factor (m3/t) 0.33 to 0.45. size up to 254 mm. class not applicable. group c. hazard toxic by dust inhalation.estimated reading time 2 minspodiform chromite depositsdatabase and gradethe major podiform chromite model has a median tonnage of , metric tons and a mean grade of 45 percent cr 2 o 3. the minor podiform chromite model has a median tonnage of 100 metric tons and a mean grade of 43 percent cr 2 o 3. the banded podiform chromite model has a median tonnage of 650 metric tons and a mean grade of 42 percent cr 2 o 3. observedcited by