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Information of manganese and crusher mining manganese


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Information of manganese and crusher mining manganese

  1. 1. Information of Manganese and Crusher Mining ManganeseDescription: This article is about consist, occurrence, production, application ofmanganese. In the end you will get some information of crushers which are widelyused in mining .Keywords: manganese mining, production of manganese, crusher for manganese .The basic information of manganeseManganese is a cheManganesel element, designated by the symbol Mn. It has the atomicnumber 25. It is found as a free element in nature (often in combination with iron), and inmany minerals. Manganese is a metal with important industrial metal alloy uses, particularlyin stainless steels.Historically, manganese is named for various black minerals from the same region ofMagnesia in Greece which gave names to similar-sounding magnesium, Mg, and magnetite,an ore of the element iron, Fe. By the mid-18th century, Swedish chemist Carl WilhelmScheele had used pyrolusite to produce chlorine. Scheele and others were aware thatpyrolusite (now known to be manganese dioxide) contained a new element, but they werenot able to isolate it. Johan Gottlieb Gahn was the first to isolate an impure sample ofmanganese metal in 1774, by reducing the dioxide with carbon.Occurrence and productionManganese is mined in South Africa, Australia, China, Brazil, Gabon, Ukraine, India andGhana and Kazakhstan. US Import Sources (1998–2001): Manganese ore: Gabon, 70%; SouthAfrica, 10%; Australia, 9%; Mexico, 5%; and other, 6%. Ferromanganese: South Africa, 47%;France, 22%; Mexico, 8%; Australia, 8%; and other, 15%. Manganese contained in allmanganese imports: South Africa, 31%; Gabon, 21%; Australia, 13%; Mexico, 8%; and other,27%. Percentage of manganese output by countriesApplications
  2. 2. Manganese has no satisfactory substitute in its major applications, which are related tometallurgical alloy use. In minor applications, (e.g., manganese phosphate), zinc andsometimes vanadium are viable substitutes. In disposable battery manufacture, standardand alkaline cells using manganese will be generally replaced in the future with lithiumbattery technology.SteelManganese is essential to iron and steel production by virtue of its sulfur-fixing, deoxidizing,and alloying properties. Steelmaking, including its iron making component, has accountedfor most manganese demand, presently in the range of 85% to 90% of the total demand.Among a variety of other uses, manganese is a key component of low-cost stainless steelformulations.Small amounts of manganese improve the workability of steel at high temperatures,because it forms a high melting sulfide and therefore prevents the formation of a liquid ironsulfide at the grain boundaries.Aluminum alloysThe second large application for manganese is as alloying agent for aluminum. Aluminumwith a manganese content of roughly 1.5% has an increased resistance against corrosion dueto the formation of grains absorbing impurities which would lead to galvanic corrosion.[32]The corrosion-resistant aluminum alloys 3004 and 3104 with a manganese content of 0.8 to1.5% are the alloys used for most of the beverage cans.[33] Before year 2000, in excess of1.6 million tones have been used of those alloys; with a content of 1% manganese, thisamount would need 16,000 tones of manganese.[33]Other usesWorld-War-II-era 5-cent coin (1942-5 identified by mint mark P,D or S above dome) madefrom a 56% copper-35% silver-9% manganese alloyManganese (IV) oxide (manganese dioxide, MnO2) is used as a reagent in organic chemistryfor the oxidation of benzyl alcohols (i.e. adjacent to an aromatic ring). Manganese dioxidehas been used since antiquity to ox datively neutralize the greenish tinge in glass caused bytrace amounts of iron contamination.MnO2 is also used in the manufacture of oxygen andchlorine, and in drying black paints. In some preparations, it is a brown pigment that can beused to make paint and is a constituent of natural umber.Manganese (IV) oxide was used in the original type of dry cell battery as an electronacceptor from zinc, and is the blackish material found when opening carbon–zinc typeflashlight cells. The manganese dioxide is reduced to the manganese oxide-hydroxide MnO2(OH) during discharging, preventing the formation of hydrogen at the anode of the battery.The metal is very occasionally used in coins; until 2000, the only United States coin to usemanganese was the "wartime" nickel from 1942–1945.[36] An alloy of 75% copper and 25%nickel was traditionally used for the production of nickel coins. However, because ofshortage of nickel metal during the war, it was substituted by more available silver andmanganese, thus resulting in an alloy of 56% copper, 35% silver and 9% manganese. Since
  3. 3. 2000, dollar coins, for example the Sacagawea dollar and the Presidential $1 coins, are madefrom a brass containing 7% of manganese with a pure copper core. In both cases of nickeland dollar, the use of manganese in the coin was to duplicate the electromagneticproperties of a previous identically sized and valued coin, for vending purposes. In the caseof the later U.S. dollar coins, the manganese alloy was an attempt to duplicate properties ofthe copper/nickel alloy used in the previous Susan B. Anthony dollar.Manganese compounds have been used as pigments and for the coloring of ceramics andglass. The brown color of ceramic is sometimes based on manganese compounds.[38] In theglass industry, manganese compounds are used for two effects. Manganese(III) reacts withiron(II) to induce a strong green color in glass by forming less-colored iron(III) and slightlypink manganese(II), compensating for the residual color of the iron(III).Larger amounts ofmanganese are used to produce pink colored glass.Some machine is used in mining ManganeseCrusher machine is often used in mining Manganese. The way to crush somematerial sometimes contains two steps: primary crushing, and secondary crushing.Jaw crusher is the most widely used in the world. As using only jaw crusher cannotmake our products meet the right size sometime, we make machines to assecondary crusher machine, for example cone crusher. Which kind of crushermachine will you use is based on the mohs hardness and Humidity.Crusher products are sold in markets now.http://www.grindingcrusher.comFor more information, please ask directly! Cs cone crusher Hammer crusher HCS cone crusher HPC cone crusher PE Jaw crusher Pew jaw crusher
  4. 4. Pf impact crusher Pfw impact crusher Py cone crusher VSI5X crusher VSI crusher