Manganese Manufacturers & Suppliers
Sellers by Category » Minerals » Manganese
Given below is the unique listing of well renowned Manganese Manufacturers, Exporters & Suppliers. Click to send your Business Inquiry to the Manufacturer, Exporter and Supplier of your choice.
You Can Advertise Here
Sale offers for Manganese
|
Low Carbon Ferro Manganese Posted on 2008-08-26 [India]
Products Detail :- Welding is a common industrial process - so common that up to 2% of the working population in industrialized countries has been engaged in some sort of welding. Although the types of welding are many, it has been estimated that shielded metal arc welding (SMAW), gas metal arc welding (GMAW) on mild steel, stainless steel and aluminum are performed by 70% of welders. Arc welding causes emission of manganese.
Manganese (Mn) is an element that is an essential nutrient, but that can be toxic at high exposures. Mn is ubiquitous in the ambient environment, being present in the soil, water, air, and food. The main source of Mn intake for most individuals is food.
L C Ferro Manganese
Welding may produce fumes and gases hazardous to health. Avoid breathing these fumes and gases. Use adequate ventilation. See ANSI Z49.1-1967, Safety in Welding and Cutting, published by American Welding Society. The type of welding identified in all companies was electric arc welding and 90% was MIG on mild steel. A total of 42 welders were monitored for personal exposure to welding fumes. Nearly 60% were overexposed to manganese and 19% were overexposed to iron. Two welders from two different companies had the two highest manganese exposures. Both had worked in isolated welding stations.
Company Name :- Triveni Chemicals
 Send Inquiry
|
|
|
|
Medium Carbon Ferro Manganese Posted on 2008-08-26 [India]
Products Detail :- Manganese, which enters the body primarily via inhalation, can damage the nervous system and respiratory tract, as well as have other adverse effect. Occupational exposures occur mainly in mining, alloy production, processing, ferro-manganese operations, welding and work with agrochemicals. Among the neurologic effects is an irreversible Parkinsonian-like syndrome (Degenerative neurologic disease). A wide spectrum of neuropsychiatric illnesses have been described with manganese toxicity.
M C Ferro Manganese
Manganese can cause an irreversible Parkinsonian-like syndrome, characterized by fixed gaze, bradykinesia, postural difficulties, rigidity, tremor, dystonia, and decreased mental status. This neurologic condition, first described in two manganese ore-crushing mill workers by Couper in 1837 has been referred to as manganism.
Company Name :- Triveni Chemicals
Send Inquiry
|
|
|
|
High Carbon Ferro Manganese Posted on 2008-08-26 [India]
Products Detail :- Manganese deposits in the brain have been described within the basal ganglia of the brain,the cortex and the medulla. Manganese can reduce dopamine in the caudate nucleus, norepinephrine in the hypothalamus, and neuromelanin in the substantia nigra. It appears that manganese may increase dopamine oxidation with associated free radical formation.
H C Ferro Manganese
Some preliminary magnetic resonance imaging studies have shown that manganese accumulates in the globus pallidus. Manganese causes neuronal loss and gliosis in the striatum, subthalamic nucleus, and pallidum, but little change in the substantia nigra.
Positron emission tomography (PET) scans of two welders showed abnormalities typical of idiopathic Parkinson's disease. The authors concluded that parkinsonism in welders cannot be distinguished from idiopathic Parkinson's disease, except by early age of onset.
Company Name :- Triveni Chemicals
Send Inquiry
|
|
|
|
High Carbon Silico Manganese Posted on 2008-08-26 [India]
Products Detail :- The origin of the name manganese is complex. In ancient times, two black minerals from Magnesia in what is now modern Greece were both called magnes, but were thought to differ in gender. The male magnes attracted iron, and was the iron ore we now know as loadstone or magnetite, and which probably gave us the term magnet. The female magnes ore did not attract iron, but was used to decolorize glass. This feminine magnes was later called magnesia, known now in modern times as pyrolusite or manganese dioxide. This mineral is never magnetic (although manganese itself is paramagnetic). In the 16th century, the latter compound was called manganesum (note the two n's instead of one) by glassmakers, possibly as a corruption of two words since alchemists and glassmakers eventually had to differentiate a magnesia negra (the black ore) from magnesia alba (a white ore, also from Magnesia, also useful in glassmaking). Mercati called magnesia negra Manganesa, and finally the metal isolated from it became known as manganese (German: Mangan). The name magnesia eventually was then used to refer only to the white magnesia alba (magnesium oxide), which provided the name magnesium for that free element, when it was eventually isolated, much later.
H C Silico Manganese
Manganese compounds were in use in prehistoric times; paints that were pigmented with manganese dioxide can be traced back 17,000 years. The Egyptians and Romans used manganese compounds in glass-making, to either remove color from glass or add color to it.
Manganese can be found in the iron ores used by the Spartans. Some speculate that the exceptional hardness of Spartan steels derives from the inadvertent production of an iron-manganese alloy.
In the 17th century, German chemist Johann Glauber first produced permanganate, a useful laboratory reagent (although some people believe that it was discovered by Ignites Kaim in 1770). By the mid-18th century, manganese dioxide was in use in the manufacture of chlorine (which it produces when mixed with hydrochloric acid, or commercially with a mixture of dilute sulfuric acid and sodium chloride). The Swedish chemist Scheele was the first to recognize that manganese was an element, and his colleague, Johan Gottlieb Gahn, isolated the pure element in 1774 by reduction of the dioxide with carbon.
Around the beginning of the 19th century, scientists began exploring the use of manganese in steelmaking, with patents being granted for its use at the time. In 1816, it was noted that adding manganese to iron made it harder, without making it any more brittle. In 1837, British academic James Couper noted an association between heavy exposure to manganese in mines with a form of Parkinson's Disease. In 1912, manganese phosphating electrochemical conversion coatings for protecting firearms against rust and corrosion were patented in the United States, and have seen widespread use ever since.
In the 20th century, manganese dioxide has seen wide commercial use as the chief cathodic material for commercial disposable dry cells and dry batteries of both the standard (carbon-zinc) and alkaline type.
Company Name :- Triveni Chemicals
Send Inquiry
|
|
|
|
Low Carbon Silico Manganese Posted on 2008-08-26 [India]
Products Detail :- Manganese is a gray-white metal resembling iron. It is a hard metal and is very brittle, fusible with difficulty, but easily oxidized. Manganese metal and its common ions are paramagnetic. This means that, while manganese metal does not form a permanent magnet, it does exhibit strong magnetic properties in the presence of an external magnetic field.
The most common oxidation states of manganese are +2, +3, +4, +6 and +7, though oxidation states from +1 to +7 are observed. Mn2+ often competes with Mg2+ in biological systems, and manganese compounds where manganese is in oxidation state +7 are powerful oxidizing agents.
L C Silico Manganese
Manganese(IV) oxide (manganese dioxide, MnO2) is used as a reagent in organic chemistry for the oxidation of benzylic alcohols (i.e. adjacent to an aromatic ring). Manganese dioxide has been used since antiquity to oxidatively neutralize the greenish tinge in glass caused by trace amounts of iron contamination. MnO2 is also used in the manufacture of oxygen and chlorine, and in drying black paints. In some preparations it is a brown pigment that can be used to make paint and is a constituent of natural number.
Manganese(IV) oxide was used in the original type of dry cell battery as an electron acceptor from zinc, and is the blackish material found when opening carbon-zinc type flashlight cells. The same material also functions in newer alkaline batteries (usually battery cells), which use the same basic reaction, but a different electrolyte mixture.
Manganese phosphating is used as a treatment for rust and corrosion prevention on steel. Permanganate (+7 oxidation state) manganese compounds are purple, and can color glass an amethyst color. Potassium permanganate, sodium permanganate and barium permanganate are all potent oxidizers. Potassium permanganate, also called Condy's crystals, is a commonly used laboratory reagent because of its oxidizing properties and finds use as a topical medicine (for example, in the treatment of fish diseases). Solutions of potassium permanganate were among the first stains and fixatives to be used in the preparation of biological cells and tissues for electron microscopy.
Company Name :- Triveni Chemicals
Send Inquiry
|
|
|
|
Carbon Silico Manganese Posted on 2008-08-26 [India]
Products Detail :- The classes of enzymes that have manganese cofactors are very broad and include such classes as oxidoreductases, transferases, hydrolases, lyases, isomerases, ligases, lectins, and integrins. The reverse transcriptases of many retroviruses (though not lentiviruses such as HIV) contain manganese. The best known manganese-containing polypeptides may be arginase, the diphtheria toxin, and Mn-containing superoxide dismutase (Mn-SOD).
Mn-SOD is the type of SOD present in eukaryotic mitochondria, and also in most bacteria (this fact is in keeping with the bacterial-origin theory of mitochondria). The Mn-SOD enzyme is probably one of the most ancient, for nearly all organisms living in the presence of oxygen use it to deal with the toxic effects of superoxide, formed from the 1-electron reduction of dioxygen. Exceptions include a few kinds of bacteria such as Lactobacillus plantarum and related lactobacilli, which use a different non-enzymatic mechanism, involving manganese (Mn2+) ions complexed with polyphosphate directly for this task, indicating how this function possibly evolved in aerobic life.
Company Name :- Triveni Chemicals
Send Inquiry
|
|
|
|
Medium Carbon Silico Manganese Posted on 2008-08-26 [India]
Products Detail :- Manganese has no satisfactory substitute in its major applications, which are related to metallurgical alloy use. In minor applications, (e.g., manganese phosphating), zinc and sometimes vanadium are viable substitutes. In disposable battery manufacture, standard and alkaline cells using manganese will probably eventually be mostly replaced with lithium battery technology.
The overall level and nature of manganese use in the United States is expected to remain about the same in the near term. No practical technologies exist for replacing manganese with other materials or for using domestic deposits or other accumulations to reduce the complete dependence of the United States on other countries for manganese ore.
M C Silico Manganese
Manganese is essential to iron and steel production by virtue of its sulfur-fixing, deoxidizing, and alloying properties. Steelmaking, including its ironmaking component, has accounted for 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 steel formulations and certain widely used aluminium alloys.
The metal is very occasionally used in coins; the only United States coins to use manganese were the "wartime" nickel from 1942â??1945, and, since 2000, dollar coins. The EU uses manganese in 1 and 2 Euro coins, due to greater and cheaper availability.
Company Name :- Triveni Chemicals
Send Inquiry
|
|
Related Business Categories Of Manganese
Bussiness Classifieds Of Manganese
Note :- Want To Send Inquiry To All The Parties Than Click Mark All Button And Than Click Request Now Button.
|
List your company over here and widen your business globally.
click here
|
