Measures to solve the refractory brick damage

Analysis of mechanism and causes of damage of refractory bricks, take corresponding countermeasure and measure according to these reasons, eliminate the factors of refractory brick damage, so as to achieve the purpose of extending service life of refractory brick.

Cause of refractory brick physical damage and chemical damage ash and kiln skin erosion thin, mechanical damage and the refractory brick masonry quality. That is to say to extend the service life of refractory bricks in burning zone, in addition to select suitable suppliers, shall be laid a good grasp of building quality,

maintain the skin at the kiln kiln during operation. Measures of is:

1. Grasp the quality of refractory brick masonry.

• Cement ratio and dilute the appropriate thick. Specific detection method is easy to spread the cement shop into the brick, and can not flow. Too thick is not easy to spread too thin, is easy to flow; two is in a brick on the fire clay, pressure on another brick slightly strong kneading, and then lift up the brick body, the brick below belt, that the proper proportion of cement.
• The front of refractory brick to be close to the cylinder. Between the brick and the cylinder body cannot pad fire clay and other debris. In the pool of fireclay brick, in front stretcher rectangular to leave 1-2 cm position does not stand in the cement, upward pressure brick, end close to the cylinder pressure to the fireclay, knead move, make cement covered the face brick, a small amount of excess cement extruded from the bricks and the small end of the big two, brick end matter stick cylinder. Brick joints cannot be greater than 1.5mm. Check brick facet, row not up, wrapping phenomenon.
• The top tight top bar. In half of the circumference of the masonry, with top carry to brick top tight, rotary kiln bricks on the other half of the week, when the top bar must be the top tight. Between the brick and the top bar end to pad body, to avoid damaging the refractory brick. Method to check whether the roof top bar tension is, when the top bar with the rotation of the cylinder to check the cylinder top brick not flagging lock position, if the sagging phenomenon, in the kiln and kiln refractory during the relative displacement caused by mechanical damage to the firebrick.
  

2.   hang up and maintain the good kiln crust. In the hanging and protect the kiln crust, mainly take the following measures

• For kiln operation training and guidance. Before ignition, special arrangements for the time of kiln operation training. Clearly pointed out that in any case, hang up and maintain good kiln crust is mainly the responsibility of kiln. At the same time about operating method under different conditions to them, in the actual operation, according to the kiln to give operation guidance and comments in a timely manner, to carry out technical exchanges between operations, and constantly improve the technological level of operation.
• Coal injection pipe reasonable position, with slightly lower guests’ glasses emblem.
• Improve technology status.
• Proper proportioning solution: the quantity of liquid phase resistance is suitable in 22-24%. Too low is not easy to hang kiln skin, too much can narrow the range of sintering temperature, silicate minerals reduce, not conducive to the operation and improve the quality of clinker.