2013年12月20日星期五

Develop countermeasures and suggestions magnesia refractories

magnesite refractory to magnesite, seawater magnesite and dolomite as raw materials, mainly periclase crystal phase , magnesium Alumina Oxide content of more than 80% of the refractories. Belong to basic refractories . Its products can be divided into metallurgical magnesia and magnesia products into two categories. Depending on the chemical composition and metallurgical purposes can be divided into magnesia brick, silica brick magnesium , magnesium aluminum bricks, magnesium , calcium brick, magnesia carbon bricks , and other varieties . Its performance is greatly affected CaO/SiO2 ratio and impurities. The high purity magnesia brick load softening point and thermal shock resistance are much higher than the general magnesia brick as well. High refractoriness of basic slag and iron slag has good resistance , is an important high-grade refractory . Multi magnesia products produced by sintering , the calcination temperature is generally between 1500 ~ 1800 ℃, in addition , chemical binding agents can be added , and the unshaped refractories made ​​of unfired . Mainly used for open-hearth , electric furnace, oxidation converter, nonferrous metal smelting furnaces , cement kilns and kiln calcination basic refractories . Since the main origin of magnesite in southern Liaoning , namely Liaoning Haicheng City , Dashiqiao , Xiuyan County , Phoenix City and other places. So the area is rich in magnesia Sic Refractory materials - magnesia , including sintered magnesia and fused magnesia , is currently the world's richest regions , where there are many companies producing magnesia refractories .
Magnesia refractories production resources be required , and the resource has a comparative advantage . Development of the steel industry, requires a lot of magnesia refractories , magnesia refractories industry therefore has a broad market prospect. Through the planning and layout , strengthen management, implementation of industrial agglomeration, conducted a series of measures such as deep processing industry to promote the development of calcium carbide industry.

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