How to Improve the Volume Density of Refractory Brick
The volume density of fire brick refers to the ratio of mass to volume sintering and cooling after high temperature. The volume density of firebrick affects the porosity, strength, corrosion resistance, weight softening temperature, wear resistance and thermal shock resistance of refractory brick. The higher the volume density, the better the strength, erosion resistance, wear resistance and weight softening temperature of fire brick, and the longer its service life. Do you know how to improve the volume density of refractory brick, follow me and understand more about refractory brick.
Refractory brick billet use different particle of refractory aggregate and binder, to form a dense structure will require a different size particles fill each other, in mixing phase mix evenly, and then be added to the fixed size of the mould; The compaction accumulation is realized by increasing the pressure and the number of times of press. The chemical reaction of refractory can also increase the density by increasing the sintering temperature and the heat preservation time. This is a method of improving the volume density of fire brick, it is very useful.
In addition to finalize the design of fire brick, refractory and not stereotypes refractories, such as refractory castable, refractory ramming material, they are also used to increase the volume density of the above methods, of course, there are differences. Castable increase volume density is need different size of particle filled, after completion of the casting, the use of vibration tools to compaction, such as vibrators, vibration plate, vibration table.
Through the high frequency vibration stress make particles filled fully, until the surface of pan pulp. The baking of castable lining is different from that of firebrick. Refractory brick is through in 100-250 degrees after drying into the high-temperature belt to calcine, and castable lining body or products by slowly increase the temperature, make the moisture inside the material out, after up to standards of performance.
