Refractories (Refractory material) can be divided into three categories according to refractoriness: (1) general refractories (Refractory material): refractoriness of 1580-1770 ℃. (2) Advanced refractories (Refractory material): refractoriness of 1770-2000 ℃. (3) super refractories (Refractory material): refractoriness higher than 2000 ℃. Aggregate is used to configure acid refractory castable mainly silica, cast stone, alabaster, andesite, diabase. Several commonly used acid level (measured gravimetric method,%) for raw materials: cast stone 98%, greater than 97 percent silica, clay clinker 92% -96%, greater than 94% andesite. Depending on the selection of the raw material conditions. However, when using silica refractories, attention must shift in polycrystalline quartz heating, the change process will produce a volume change (expansion), so it is best to replace part Fischer silica brick raw material to make the aggregate, the preparation of this castable powders mainly silica powder, cast stone, porcelain powder, high siliceous clay refractories lowest clinker powder, casting powder which is used more acid powder. General Ingredients acid refractory castable composition: Acid refractory aggregate: 60% -70% of refractory Which is good, powder 30% -40%, plus a density of sodium silicate solution 1.38-1.42g / cm3 13-16 % with sodium fluoride as a pro when hardening agent in an amount of 10-12% sodium silicate solution quality. Where have sold refractories, Refractories shangzhuang (certified), Longyan 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 leader, over the years, the company is implementing the scientific management, innovation and development, honesty and trustworthiness guidelines, and satisfy customer needs. In shangzhuang refractory leadership with the staff warmly welcome all inquiries negotiations to create shangzhuang Refractories a better future. You can also access (www.yntjj.com.cn/supply_details_46654595.html), for more information about the company.