Phosphate bonded high alumina brick 1.high refractoriness under load, 2.high strength, ... , phosphate as binder, phosphate bonded high alumina brick is light burned brick which is characterized by high refractoriness under load, ... and corrosion resistance and great thermal shock resistance. The brick is used for burning zone and transition zone of ... ) ≤(1000 oC)1.6 Phosphate bonded high alumina brick