Calcium phosphate high alumina bricks are widely used in cement kilns. They can be used as linings in preheating zones, decomposition zones, transition zones, and cooling zones. It can also be fired into strips using a cement kiln with a diameter less than 3 meters.
The building materials industry standard JC350-1993 "Phosphate bonded high alumina cement kiln bricks" is divided into two types according to the binder. The concentration of phosphate ester high alumina brick binder is 42.5%? 50% phosphoric acid solution. The code is P and the code for lock seam bricks is PC. High alumina type wear-resistant bricks (referred to as wear-resistant bricks) are formulated with industrial phosphoric acid and aluminum hydroxide. They are formulated with industrial aluminum hydroxide, and their molar ratio is Al2O3:P2O5=1:3.2.
High aluminum phosphorus composite bricks have high thermal strength, good thermal shock performance, good wear resistance, and are easy to hang in the kiln. Some cement manufacturers use it to produce the firing zone and transition zone of small rotary kilns. During the debugging process, the kiln often stops, showing good performance.
