Xinhai tailings dry stacking technology is mainly applied to the dewatering and concentrating of mineral tailings in the mineral processing plants. To reach the aim of tailings dry stacking and avoiding environmental pollution, it is the essential technology of green mine.
Phosphate Flotation Product Line is applied for complex structure phosphate with fine particle distribution, closed embeddedness relationship, difficult monomer dissociation, etc.
Barite is fragile and like a big tube. The separation methods of Xinhai are generally gravity separation, magnetic separation and flotation.
Alluvial gold processing solution mainly applies to processing alluvial gold with a large volume of gangue minerals. Alluvial gold processing is a set of mining processes, including crushing and screening, desliming stage, separating stage, etc.
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.
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
Chromium is a hard gray metal that is valued for its incredible resistance to corrosion. Pure chromium is magnetic and brittle but when alloyed can be made malleable and polished to a
In alkali dissolution finely ground chrome ore is roasted with Na2CO3 under oxidizing conditions at ca. 1100 °C. The sodium chromate is leached from the calcine most of the gangue is insoluble. The solution containing hexavalent Cr can be reduced with SO2 and used for electrowinning or Na2Cr2O7 can be crystallized from it.
Physical Properties of Chromite Chemical Classification Oxide Color Dark gray to black rarely brownish black Streak Dark brown Luster Metallic to submetallic Diaphaneity Opaque Cleavage None Mohs Hardness 5.5 to 6 Specific Gravity 4.0 to 5.1 (variable) Diagnostic Properties Luster streak Chemical Composition
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.
Chromium. Chromium is a lustrous brittle hard metal. Its colour is silvergray and it can be highly polished. It does not tarnish in air when heated it borns and forms the green chromic oxide. Chromium is unstable in oxygen it immediately produces a thin oxide layer that is impermeable to oxygen and protects the metal below. Applications
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