The stress damage of the iron plate is at the hot end of the refractory brick. The surface iron plate and the magnesium oxide in the magnesia brick react chemically at high temperature to form a mafic-iron compound. The compound increases in volume and squeezes the refractory brick to break horizontally. In view of this situation,Refractory Bricks the practice of refractory brick veneer iron should be changed or replaced with fire clay.
Refractory bricks are skewed and misaligned in a large area. Due to loose masonry,Refractory Bricks frequent kilns are opened and stopped, and the kiln barrel is deformed, causing the kiln barrel and the cold surface of the lining brick to move relative to each other, causing the lining brick to be skewed and misaligned,Refractory Bricks and the brick surface bursts and corners are dropped. In view of this situation, the following measures should be taken: When building,Refractory Bricks the large surface of the refractory bricks should be hammered firmly, the bricks should be locked tightly,Refractory Bricks and the wedge iron should be carefully added twice; maintain a stable thermal system; use high temperature for the deformed part of the kiln shell The clay is smooth.
Ovality stress squeeze: The increase of the kiln wheel belt pad iron gap produces a larger ovality,Refractory Bricks which causes the refractory brick to squeeze. In view of this situation, the ellipticity of the cylinder should be checked regularly. If the ellipse value exceeds 1/10 of the kiln diameter (for example, the kiln diameter is 4.7 meters,Refractory Bricks the maximum ellipse value is 0.47%),Refractory Bricks the backing plate should be replaced or the horn should be added to adjust the tyre gap.
Stress squeeze of the locking iron: When locking the bricks, the locking iron is too tight, which will cause the formation of brick trenches at the locking. In response to this situation,Refractory Bricks the following measures should be taken: no more than 3 lock irons at the same lock; the distance between the lock irons should be dispersed as much as possible;Refractory Bricks the inner and outer openings are the same when the bricks are locked;Refractory Bricks the lock iron should be as far away from the thin lock bricks as possible. Brick retaining ring extruded refractory bricks: The retaining bricks (shaped bricks) at the retaining ring are broken and cracked due to extrusion. For this situation,Refractory Bricks the single-channel retaining ring should be changed to a double-channel retaining ring. Lay whole bricks on top to avoid processing special-shaped bricks.
