![]() ![]() ![]() Humans take in between 250 and 350 mg/day of magnesium and need at least 200 mg, but the body deals very effectively with this element, taking it form food when it can, and recycling what we already have when it cannot. Dolomite and magnesite are mined to the extent of 10 million tonnes per year, in countries such as China, Turkey, North Korea, Slovakia, Austria, Russia and Greece. The United States has traditionally been the major world supplier of this metal, supplying 45% of world production even as recently as 1995. It’s the third most abundant structural metal in the earth’s crust, only exceeded by aluminum and iron. It’s also found in seawater, underground brines and salty layers. It’s very abundant in nature, and it’s found in important quantities in many rocky minerals, like dolomite, magnetite, olivine and serpentine. Magnesium is the eighth most abundant element and constitutes about 2% af the Earth's crust by weight, and it is the third most plentiful element dissolved in seawater. Other uses include: removal of sulphur form iron and steel, photoengraved plates in the printing industry reducing agent for the production of pure uranium and other metals from their salts flashlight photography, flares, and pyrotechnics. Magnesium components are widely used in industry and agriculture. It also has many useful chemical and metallurgic properties, which make it appropriate for many other non-structural applications. With a density of only two thirds of the aluminum’s, it has countless applications in cases where weight reducing is important, i.e. Magnesium compounds are used as refractory material in furnace linings for producing metals (iron and steel, nonferrous metals), glass, and cement. The main ingredients of the alloys are: aluminum, manganese, zircon, zinc, rare-earth metals and thorium. It was used for a long time for synthesizing special and complex organic components by the well-known Grignard reaction. Used as a catalyst, magnesium promotes organic reactions of condensation, reduction, addition and dehalogenization. Magnesium reacts only slightly or not at all with most of the alkalis and many organic substances, like hydrocarbons, aldehides, alcohols, phenols, amines, esters and most of the oils. It joins together with most non-metals and almost every acid. Magnesium is very chemically active, it takes the place of hydrogen in boiling water and a great number of metals can be produced by thermic reduction of its salts and oxidized forms with magnesium. Magnesium is known for a long time as the lighter structural metal in the industry, due to it’s low weight and to it’s capability of forming mechanically resistant alloys. Its relative density is 1,74 and it’s density 1740 kg/m 3 (0.063 lb/in 3 or 108.6 lb/ft 3). Magnesium is silvery white and very light. Magnesium - Mg Chemical properties of magnesium - Health effects of magnesium - Environmental effects of magnesiumĬhemical element, metallic, symbol Mg, situated in group IIa in the periodic table, atomic number: 12, atomic weight: 24,312. Separation and Concentration Purification Request. ![]() Plant Inspection & Process Optimalisation. ![]()
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