Long-term supply line yong brand flint and flint aggregate castable

Flint is hard on behalf of our high-quality clay. Ore was gray, gray, gray and black, the organizational structure of fine, large hardness, water is not scattered, low plasticity, conchoidal fracture, we are talking about flint generally refers cooked flint (CALCINED CLaY). It is flint ore formed after calcination, the calcined coke gem Al2O3 content is about 44%, Fe2O3 less than 2%. Composition and stability, homogeneous, compact structure, low water absorption, the section was conchoidal. Flint is a mixture of aluminum-containing silicate. The main chemical components of Al2O3 and SIO2 two oxides, impurities are mainly alkali oxides, alkaline earth and iron, titanium, and some organics. Various oxides are played fluxing action will reduce the refractoriness of raw materials. Therefore, flint impurity content, especially the lower Na2O + K2O content, the higher refractoriness. The Al2O3 / 3SiO2 ratio closer to the theoretical value (A / S = 0.85), indicating that the higher the purity of flint. A / S, the higher flint refractoriness, the wider the range of sintering and fusion, high-quality flint refractoriness up to 1750 ℃. Flint after calcination with small stable, high strength and low water absorption rate and other characteristics. A measure of the degree of sintering flint indicators generally have a true specific gravity, bulk density, porosity, water absorption, firing shrinkage rate. Good degree of sintering flint water absorption is less than 5%, a bulk density greater than 2.55g / cm3. Properties] [flint flint having heat resistance and sintering of flint [Use] is mainly used for the production of advanced refractory materials, manufacture of ceramics, aluminosilicate refractory fiber production and military. Flint aggregate and casting material mainly used for boiler [packaging] for the bulk of flint, flint aggregate of 50 kg bags, flint castable 50 kg and 25 kg bags. Bulk is required.