Manganese ore species: the distribution of Chinese manganese ore origin is very wide, thereinto HuNan, GuangXi, LiaoNing and JiangXi reserves concentration. Manganese ore have various kinds, basically have the following kinds:
Pyrolusite tetragonal system, crystal is columnar or needle, usually a massive, powder aggregate. Color and streaks are black. Gloss and hardness depending on the different of crystallization degree of finish and form, crystal ranking the half metal gloss, hardness higher, and cryptocrystalline block and the powder, the luster is dim, low hardness, extremely easy dirty hands. Specific gravity is about in five. Pyrolusite is mainly form of deposition, for sedimentary manganese ore is one of the major components. In the manganese ore bed of the oxidation zone section, all primary low manganese content can also be oxidized to soft manganese ore. Pyrolusite in manganese ore is very common among the mineral, is an important mineral raw materials of metal powder supplier to refine manganese.
Psilomelane monoclinic system, crystal rare, usually a clock emulsion, kidney shape and grapes aggregate, there is also a dense block and dendritic. Color and streaks are black. Half metallic luster. Psilomelane mainly exogenous causes, in manganese ore bed of the oxidation zone and the sedimentary manganese deposit, is also very common among manganese manganese content, manganese is tried the important mineral raw materials.
Manganite monoclinic system, crystal is columnar, cylindrical with longitudinal lines. In some manganese hydrothermal vein in the geode druses, in sedimentary manganese deposit in the aphanitic block, or show oolitic, clock emulsion aggregation, etc. Mineral color is black, stria Browning. Half metallic luster. Water manganese find in endogenous causes some hydrothermal deposit, also in exogenous causes sedimentary manganese deposit, is one of the mineral raw material of refining manganese.
Hausmannite tetragonal system, crystal in four square double cone, usually for granular aggregate. Black color, brown orange or red brown streak flaw. Half metallic luster. Black manganese by endogenous action or metamorphism and form, in some contact metasomatic deposit, hydrothermal deposit and sedimentary metamorphic ore bed, and brown manganese ore and symbiosis, also one of the mineral raw material of refining manganese.
Brown manganese tetragonal system, crystal is double cone shape, also shows granular and massive aggregate output. Mineral is black, wale for brown-black. Half metallic luster. Other characteristics are the same as hausmannite.
Rhodochrosite trigonal system, crystal is rhombohedron, usually for granular, massive or nodular. Mineral color is rose, easy oxidation and into brown-black. Vitreous luster. The endogenous effect formed rhodochrosite more common in some hydrothermal deposit and contact metasomatic deposit; By exogenous role of formation of rhodochrosite distributed in the sedimentary manganese deposit in. Rhodochrosite manganese is an important mineral raw materials.
Sulphur manganese cubic system, common simplex have cube, octahedron, rhombic dodecahedron, aggregate for granular or block. Color is from steel ash to iron black, weathering into brown, the dark streaks. Half metallic luster. Sulphur manganese teem in sedimentary metamorphic ore bed, one of the mineral raw material of refining manganese.
Manganese ore purpose: manganese is an indispensable material in iron and steel industry. Add a small amount of manganese powder in grade of steel, can increase the hardness, ductility, toughness, anti-wear ability. Manganese steel is necessary materials in manufacturing machinery, ships, vehicles, rails, Bridges, large factory buildings. Ferromanganese in steel, also as a reductant, for the deoxidization, desulphurization, improve steel quality and yield. Manganese and copper, nickel, cobalt, aluminum, made all kinds of alloy, used to manufacturing machinery parts, aircraft and ship equipment, standard resistance wire, etc. Pyrolusite used in battery negative agent, in ceramic, enamel production as oxidant and glaze color, in glass production to eliminate green and system decorative glass. Manganese compounds, such as manganese sulfate, manganese carbonate, potassium permanganate, etc. is important raw materials for chemical reagent, medicine, dyestuff, paint and synthesis industry.
Metallurgical manganese ore: generally require the contenting of manganese is high, and less impurity, especially control the content of phosphorus, as for iron content should take the smelting varieties into account, if used for high manganese iron smelting, it is better that the ore content little iron.
Source:http://www.mhcmp.com
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