Magnesium oxide is the most important industrial magnesium compound with its main application in the steel and refractory industry. It is also largely used in many other industrial sectors including the food and animal feed industries. Magnesia or magnesium oxide is an alkaline earth metal oxide. The majority of magnesium oxide produced today is obtained from the calcination of naturally occurring minerals, magnesite, MgCO3, being the most common. Both MgCO3 and Mg(OH)2 are converted to MgO by calcinations. Sintered magnesia (MgO i.e., dead burned magnesia: DBM) is produced through a sinter burning process at C temperature ranges of 1600 to 2200 Different types are defined by the content of lime in the raw material, which is in the range of <2 to 35% and the SiO2 content, which in general is required to be low. Special uses also require very low contents of iron. The product is characterized by a cubic crystal structure with an apparent density as a rule in the range of 3.05 to 3.45 g/cm3 and with crystal dimensions in a range of 30 to 200 pm. Sintered magnesia or dead burned magnesia is produced as grains or briquettes. Starting from magnesium carbonate, by a high temperature decarbonisation reaction, magnesium carbonate itself may be obtained from magnesite mines (natural or dry process route). The raw materials for the production of magnesium oxide are natural magnesium carbonate. Applications:Sintered or dead burned magnesia is primarily used in the refractory industry. Example areas of application for refractory products using magnesia are: In the steel industry, for electric arc furnaces, basic oxygen furnaces or other furnaces, steel converters, hot metal transport and machinery in the cement industry, for the inlets of preheaters, cement kilns and coolers in the non-ferrous metal industries. For furnaces in the lime industry, e.g. for the inlets of lime kilns in the glass industry, e.g. for melting furnaces, regenerator chambers. It is chiefly used in the manufacturing of refracting bricks for furnace lining. A mixture of magnesia and asbestos is used as a lagging for steam pipe, to retard the loss of heat by radiation. It is a component of sorel's cement. The steel industry, e.g. for electric arc furnaces, basic oxygen furnaces or other furnaces, steel converters, hot metal transport and machinery, in cement industry, e.g. for the inlets of preheaters, cement kilns and coolers. The non-ferrous metal industries, e.g. for furnaces, the lime industry, e.g. for the inlets of lime kilns, the glass industry, e.g. for melting furnaces, regenerator chambers, for caustic calcined magnesia, the main applications can be found in agricultural industry as feed or fertilizer, the steel production industry as slag conditioner, the construction industry as floor covering and for insulation, the manufacture of cellulose, paper, chemicals, pharmaceuticals, flame-proofing and sweeping materials, the environmental protection industry. Market Scenario: The consumption of Magnesium Oxide for refractory material is about 55 to 65 % and 15% in cement industry and rest for other uses. Based on a worldwide magnesia production shows the sector specific consumption of magnesia in different industries including the synthetic magnesia industry. Magnesia is mainly used for the production of refractory products. 65 % of magnesia used for refractories is produced in order to be used in the steel industry, 15 % in the cement industry, 7 % of magnesia production is used for other refractory applications, such as in the non-ferrous metals industries or in the glass industry and finally 13 % of total production is used for s are known – most of them are for CCM. The main applications can be found in agriculture as feed or fertilizer, in the construction industry as floor covering and for insulation, in the manufacture of cellulose, paper, chemicals, and pharmaceuticals, flame-proofing and sweeping materials as well as in environmental protection