Tundish Slag Dam,Tundish Refractory,China Refractory,Metal Refractory,Refractory Material,Refractory Product

Tundish Slag Dam

The products are characterized by their high strength, good resistance to carrion and thermal shock and long service life. It can be effectively stabilization molten steel enter to mould, promote non-metallic inclusions in molten steel float, and improve the quality of steel. 

Silicon Carbide Refractories

Silicon Carbide Refractories

 

     articles produced from silicon carbide (carborundum) and additives, containing between 20-35 and 70-98 percent SiC.
     Silicon carbide refractories are classified, according to the method of bonding the silicon carbide granules, as siliceous (formed in the oxidation of carbide), nitride (Si3N4), oxynitride (Si2ON2), and aluminosilicate, as well as recrystallized and self-bonded. The products are formed on presses (or by other methods) from powdered mixtures containing silicon carbide and subsequently fired at 1300°-1550°C (certain types at 2000°-2200°C).
     Silicon carbide refractories exhibit high thermal conductivity: 7-17 watts per (m.°K) at 800°C. As a result, they show good thermal stability. They are also resistant to deformation at elevated temperatures. At 130O°-1500°C in an oxidizing medium they undergo gradual oxidation, particularly in the presence of an excess of oxygen and of water vapor. Silicon carbide refractories are used in recuperators, retort furnaces, nonferrous-metal-lurgy plant units, shelves of tunnel wagons (in firing porcelain and ceramics), and boilers.