Sintered porous bricks will have a certain degree of porosity, but too many pores will affect the benefits of the product.The particles of sintered porous bricks are similar to many clinker clay bricks, and the selection of coarse, medium and fine 3 levels is coordinated. Generally it is 3 0.5 mm, 0.5 0.088 mm, less than 0.088 mm. 3 cooperation should agree with the criterion "two large and small centers", cut particles, add powder, and properly add critical particle size to obtain low porosity, load and thermal shock Stability and structural strength of the brick at high fire resistance.
Improved forming pressure is an important factor in reducing porosity. Production practice indicates that the forming pressure of sintered porous bricks should generally reach 137 meters.
PA, high-density molding pressure sintered porous brick should be 176-215 MPa, that is, you only need to select 250 non-conflicting brick molding machines to form such a role.
When molding, the ruler should be placed on the size of the brick and ruler, which is mainly related to the nature of the clay, the molding method and direction of the kiln, and its exact value is determined through experiments.
In other words, in the production of sintered permeable bricks , we should pay attention to the selection of particles and improve the molding pressure.