Shangzhuang Refractories Co., Ltd., Zhengzhou City, l learned basic refractory magnesia products to the representative. It contains magnesium more than 80% to 85% of refractory agent, refractory packing machines periclase main crystal phase. The main raw material Magnesia magnesite, seawater magnesia extracted from the sea by high temperature calcination of magnesium hydroxide) and the like. Alkaline slag and iron slag has good resistance. The melting point of pure magnesium oxide up to 2800 ℃, therefore refractory magnesia refractoriness are higher than the clay and brick. Since the mid-1950s, the use of open hearth furnace and basic oxygen converter steel roof, increasing production of basic refractory use, clay and brick production is declining. Basic Refractories mainly used for open-hearth furnace, oxygen converter, electric furnace, non-ferrous metal smelting as well as some high-temperature thermal equipment. Shangzhuang Refractories Co., Ltd., Zhengzhou City, to introduce monolithic refractories are refractory aggregate and powder, binders or other additives mixed with the mixture of refractory offer a certain percentage of the composition can be used directly or with appropriate liquid formulations after use. Unshaped refractory is a non-calcined new refractory materials, its refractoriness of not less than 1580 ℃. With China's accession to the WTO refractories prices, domestic refractories and refractory products facing overseas longevity, energy saving, functional The new product challenges, an increasingly competitive market. In this regard, the experts pointed out that China should accelerate the optimization and adjustment of the refractory industry, implementation of powerful alliances, eliminate backward production lines, to strengthen research and production, the adjustment of product structure to meet the needs of domestic and foreign iron and steel industry as soon as possible. Refractory wholesale | shangzhuang Refractories (certified) | Guangzhou Refractories by shangzhuang Refractories Co., Ltd., Zhengzhou City. Zhengzhou City shangzhuang Refractories Co. (www.yntjj.com.cn) (www.yntjj.com.cn) is Zhengzhou, charge, flux leaders, over the years, the company is implementing the scientific management, innovation and development, honesty and trustworthiness The guidelines, the maximum meet customer needs. In shangzhuang Refractories leadership with the staff warmly welcome all inquiries negotiations to create shangzhuang Refractories better future.