Manganese oxide have been exploited since ancient times


As ores, Mn oxides have been used since ancient times. In particular, pyrolusite (MnO2) was prized as a pigment for its ability to remove the green tint imparted by iron to glass. By the mid-19th century, Mn was an essential component in steel making, as a deoxidizer and desulfurized, and for making hard-steel alloys. Mn oxides are the predominant ore minerals in most of today's commercially important Mn deposits, commonly formed by weathering Mn-rich carbonates or silicates, either by in situ oxidation or by dissolution followed by migration and reprecipitation. Approximately 80–90% of the current world production of Mn ore is consumed by the steel industry; on average, steel contains about 0.6 weight percent Mn but maybe 10% or more in high-strength steel. Other uses include the production of special Al alloys, Mn chemicals, catalysts, water-purifying agents, additives to livestock feed, plant fertilizers, colorants for bricks, and in batteries. Natural Mn oxide (primarily nsutite) is the cathodic material in zinc-carbon dry-cell batteries. In recent years, however, alkaline batteries that use synthetic, electrolytic Mn oxide have increasingly dominated the market. The unusually high adsorption capacities and scavenging capabilities of Mn oxide/hydroxide minerals provide one of the primary controls of heavy metals and other trace elements in soils and aquatic sediments. Understanding such controls is essential for maintaining and improving the earth's fertility, mitigating health effects in humans and animals, and treating water for consumption and industrial use. Because Mn oxide minerals commonly occur as coatings and fine-grained aggregates with large surface areas, they exert chemical influences far out of proportion to their concentrations. If you are looking for high quality, high purity and cost-effective Manganese oxide, or if you require the latest price of Manganese oxide, please feel free to email contact mis-asia.

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