Roasting is a key link in the production process of sintered permeable bricks . Generally, the firing temperature is controlled between 900 ~ 1100 °, so that the bricks are partially melted and sintered. If the firing temperature is too high or too long, burrs will easily occur. The brick roasting temperature is too low or not working at all times.
When the roasting furnace is used as an oxidizing atmosphere, iron oxide is produced and the brick is red, which is called red brick. If it is fired in an oxidizing atmosphere and then sintered in a recovery atmosphere, the red iron oxide is returned to the tin oxide. For "blue brick.
In addition, high carbon content industries such as coal slag and fly ash can be used in the production of sintered permeable bricks .
Waste mixes with the soil to block the bricks. When the calcined bricks reach a certain temperature, the residual carbon is in the dry burning body, which can save a lot of fuel and 5% to 10% of the clay data. The incinerated bricks are uniformly incinerated and the apparent density is small. The thermal conductivity is low, and the strength can be improved by about 20%.
Therefore, by sintering the permeable brick , the hardness and quality can be improved, and fuel can be saved, or even incinerated.In the production process, the process is very important.