Refractory material

Refractorymaterial: The charcoal product---small carbon blockuses the good quality low ash (ash content≤6%) electric sintered at high temperature (sintering temperature is 1750-2200°C) anthracitic coal and silicon carbide as main materials, many kinds of super fine additives and compound resin as adhesives, formed by pressing sintered at high temperature and processed by accurate grinding .It is used to lay the linings of furnace vat, iron runner and area of iron-slag of blast furnace. It has the distinguishable characters of average minor aperture, low ventilate, good resistance to iron eroding and anti-alkali. ItemsUnitIndexFixed Carbon C%≥70Bulk density%≥1.65Appearance Porosityg/cm³≤15Cold crushing strengthMPa≥45Modulus of raptureMPa≥12Thermal conductivity (800°C)W(m.k)≥12Air permeabilityMDa≤12Index of iron corrosion%≤30Alkali fastnessU or LCAverage pore diameterµm≤1.0Volume percent of ≤1µm pore diameter%≥70