How many kinds of iron ore are there? What is the color lattice of an ore?
Hematite (Hematite) is also an iron oxide ore, the main component is Fe2O3, dark red, the specific gravity of about 5.26, containing Fe70%, O 30%, is the most important iron ore.
Siderite (Siderite) is an ore containing iron carbonate, the main component is FeCO3, showing bluish gray, the proportion is about 3.8. Most of this ore contains a considerable amount of calcium salt and magnesium salt. Due to high temperature carbonate on about 800 to 900 DEG C will absorb a lot of heat and emit carbon dioxide, so we put most of this kind of ore after roasting with blast furnace.
(Limonite) this is limonite containing iron ore. It is goethite (Goethite) and HFeO2 (LepidoCRocite) FeO iron ore (OH) are two kinds of different structure of ore, some of the main ingredients in its chemical formula mFe2O3.nH2O, showing brown or brown, containing about 62% Fe, O 27%, H2O 11%, the proportion is about 3.6 ~ 4, mostly with other iron ore.
Magnetite (MagnetITe) is an iron oxide ore, the main component is Fe3O4, is a composite of Fe2O3 and FeO, black gray, the proportion of about 5.15, containing Fe72.4%, O 27.6%, magnetic.
