Specifications and Sizes of Refractory Bricks
The correct specifications and sizes of refractory bricks have great impact on the tightness and service life of the masonry.
Generally, the joints of refractory bricks are the weakest point of the masonry. Molten slags and corrosive gases can penetrate into the bricks through joints. If the specifications and sizes are not correct, the construction is not convenient and the joints are large. The volume of the masonry is not stable due to the shrinkage of the bricks, which may cause the spalling and cracking of bricks, and even collapsing of the masonry. This will expand the contact area between the slag and refractory brick, accelerate erosion, cause partial damages of the masonry and reduce the service life of the masonry. Therefore, in order to ensure the overall quality of the masonry, the specifications and sizes of refractory bricks should be correct.
The dimension tolerance of refractory bricks, distortion and edge missing are all important indicators of the quality of refractory bricks. Maximum limit values should be defined based on the classification and working conditions to judge the quality of refractory products and grade the products.
The accuracy of the specifications and sizes of refractory bricks is mainly controlled by the raw materials and processing as well as storage and transport. Stable raw materials, sophisticated equipment, reasonable production technology and proper operation all help obtain products with qualified specifications and dimensions. Proper storage, packing and transport are also important to avoid further damage of products.
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