Clay brick-250# furnace ring

Product Description of Clay Brick 250# Furnace Ring:

Clay bricks, also known as sintered bricks, are artificial small blocks for construction. Clay bricks are made of clay (including powders such as shale and coal gangue) as the main raw material, which is processed, shaped, dried and roasted. The difference between solid and hollow.

Clay bricks, clay bricks are mainly made of mullite(25%～50%), glass phase (25%～60%), cristobalite and quartz (about 30%).Usually hard clay is used as the raw material, the mature material is pre-calcined, and then mixed with soft clay, which is formed by semi-dry or plastic method, and the temperature is 1300～1400 C to burn clay brick products.It is a refractory brick commonly used in blast furnaces, hot blast stoves, heating furnaces, power boilers, lime kilns, rotary kilns, ceramics and refractory brick firing kilns.

Load softening temperature of clay refractory bricks:

Because clay refractory bricks appear in a liquid phase at a lower temperature and begin to soften, if they are subjected to external force, they will deform, so the load softening temperature of clay bricks is much lower than the refractoriness.Around 1350°C.

Slag resistance:

Clay refractory bricks are weakly acidic refractory bricks, which can resist the erosion of acid slag, but their resistance to the erosion of alkaline slag is slightly worse.

Thermal shock resistance:

Clay refractory bricks have a small thermal expansion coefficient and good thermal shock resistance.The number of water cooling at 850°C is generally 10 to 15 times.

High temperature volume stability:

Clay refractory bricks recrystallize at high temperatures, which reduces the volume of refractory bricks and produces a liquid phase at the same time. Due to the action of the surface tension of the liquid phase, the solid particles are close to each other, the porosity is reduced, and the volume of the refractory bricks is reduced. Clay bricks shrink under the action of high temperature.

Uses of clay refractory bricks:

Clay refractory brickWidely used in metallurgy, building materials, chemical industry, petroleum, machinery manufacturing, silicate, power and other industrial fields。

For example, low temperature parts such as blast furnace, hot blast furnace, iron furnace, open hearth, electric furnace and glass melting furnace are all built with clay bricks. In addition, ladle, refractory bricks for pouring system, heating furnace, heat treatment furnace, combustion chamber, flue , Chimneys, etc. can be built with clay bricks.

Physical and chemical indicators: