65%Alumina Content High Alumina Brick Size
Straight firebricks are divided into: standard fire bricks, 3/4 long bricks, double half bricks, double long bricks, double half width bricks, half thick bricks, laying bricks, and long bricks.
Wedge brick: thick wedge firebrick, side thick wedge brick, vertical wedge brick, double half width thick wedge brick, double wide vertical wedge brick, vertical wide wedge brick.
65%High alumina brick size: general brick size: 230mm × 114mm × 65mm, 300mm × 150mm × 75mm and so on. Straight fire brick dimensions are: 172 mm x 114 mm x 75 mm, 230 mm x 150 mm x 65 mm.
Refractory Brick Working Temperature
65 high alumina brick working temperature can not equal to 0.2Mpa refractoriness under load,that is 1470℃.
What is Refractory Brick Load Softening Temperature
The load softening temperature of the refractory brick refers to the temperature at which the refractory brick is subjected to a test strength of 0.2 MPa, a constant pressure load, and deformation under heating at a certain temperature increase rate. Refractory brick load softening temperature is used to test the temperature of the refractory brick against the high temperature and load, which is used as a reference for the use of the refractory brick.
The increase of the softening temperature of the refractory brick is inseparable from the analysis of the load softening temperature of the refractory brick. The factors affecting the softening temperature of the refractory brick are the composition of the raw materials and raw materials of the refractory brick. The purity of the refractory brick is made of fire. The formulation of the proportion of the brick formula and the firing temperature of the refractory brick and the like.
How to Improve Refractory Brick Load Softening Temperature
First of all, it is necessary to improve the purity of the raw refractory materials used for the refractory bricks, the higher the purity of the refractory raw materials, the less the impurities, the lower the content of the melt, the softening temperature of the refractory bricks.
Secondly, some ingredients for improving the softening temperature of the load are added to the raw refractory materials of the refractory brick. For example, when producing high aluminum bricks, some mullite powders which can increase the softening temperature of the load are added, and the proportion of the mullite powder is controlled to improve the ratio and effect of using.
Then control the proportion of the refractory bricks using the refractory raw materials, the grading of the refractory raw materials, so that the aggregate and the powder are fully fused, the slab is better formed when the slab is made, and the internal strength of the refractory brick can be increased during the firing, and the refractory brick is controlled. The firing temperature during the firing process extends the holding time to fully reflect the internal materials of the refractory brick.
Type of High Alumina Brick
High alumina bricks are divided into four grades according to the alumina content. The alumina containing bricks of the third grade high alumina bricks are not less than 55 percent, and the alumina containing bricks of the second grade high alumina bricks are not less than 65. The content of the first grade high alumina bricks is not low. At 75, the premium aluminum brick contains more than 85 alumina. As for the shape of high alumina bricks, in addition to the standard high-aluminum bricks, there are also general-purpose high-aluminum bricks, also known as high-alloy aluminum bricks. If the shape is very irregular, it is usually called a special high-aluminum brick. In short, according to the specific use of the furnace.
