spalling resistant high alumina brick

1, Refractory bricks characters: 1. Main Features: Compared with ordinary fireclay bricks and high alumina bricks, high alumina brick for rotary kiln have special features that are anti-wearing, anti-alkali and high temperature resistance. In order to have these features, special high alumina brick have been developed such as the phosphate combination of high alumina brick, phosphate bonded anti-wearing high alumina brick, anti-spelling high alumina bricks and half -acid anti-alkali high alumina bricks, etc. 2. Applications: They are mainly used in firing zone, transition zone, decomposition zone and etc. 3. Physical and Chemical IndexIndexphosphate-bondedphosphate-bonded wear-resistantAnti-stripping brick (1)chemical bonding brickAnti-stripping brick (2)Al2O3/%≥75≥77>70≥75≥55 60Fe2O3/%≤3.0≤3.0≤2.01.1 1.4CaO/%≤0.6≤0.6Refractoriness/°C>1770>1770>1780>1770>1770volume density /kg • m-3≥2650≥27002500 2600≥26002.2 2.3Apparent porosity /%18 2017 1920 2518 2019 26Compress strength /MPa≥60≥64≥45≥6030 50refractoriness under load, °C≥ T0.6≥1350 ≥1300≥1470 ≥14501420 1480Thermal shock resistance (1100°C-Water cold)≥30≥30≥30≥208 20