高铝砖是氧化铝硅酸盐耐火材料，Al2O3含量超过48%。 高铝砖是用氧化铝或其他含有较高氧化铝含量的原料通过成型和烧成而制造的。
产品特点：加热炉用吊（锚）砖以白熔氧化铝、特种铝土矿、安达卢西亚石、莫来石、燧石粘土为主要原料，加入少量软粘土，经高压成型，高温烧结而成。 主要矿物成分包括莫来石和刚玉，在高温下具有优异的热稳定性。
| Items | Corundum Andalusite | High alumina Andalusite | High alumina | High alumina | High alumina | Fireclay | |
| JRL-90 | JRL-80A | JRL-80 | JRL-70 | JRL-60 | JRL-50 | ||
| Al2O3 % ≥ | 90 | 80 | 80 | 70 | 60 | 50 | |
| Fe2O3% ≤ | 0.5 | 1.0 | 1.5 | 1.5 | 1.8 | 1.8 | |
| A.P % ≤ | 15-19 | 17-21 | 19-23 | 19-24 | 20-25 | 20-26 | |
| B.D g/cm³ ≥ | 2.9 | 2.7 | 2.6 | 2.5 | 2.35 | 2.3 | |
| C.C.S Mpa ≥ | 60 | 60 | 60 | 55 | 50 | 40 | |
| RUL ℃ | 1600℃0.8 | 1560℃0.8 | 1540℃0.8 | 1500℃0.8 | 1460℃0.8 | 1450℃0.8 | |
| P.L.C % | 1550℃×2h | 0.1-0.2 | 0.1-0.2 | 0.1-0.2 | — | — | — |
| 1450℃×2h | — | — | — | 0.1-0.2 | — | 0.1-0.4 | |
| 1100℃ Thermal shock resistance water Cycle | 25 | 20 | 15 | 15 | 20 | 15 |
High alumina refractory brick is formed and calcined from bauxite or other raw materials with high alumina content. High thermal stability, refractoriness above 1770℃. It has good slag resistance and is used for the lining of steel-making electric furnaces, glass melting furnaces, cement rotary furnaces, etc.
Features:
High alumina brick has the advantages of small high temperature creep, strong corrosion resistance, good thermal shock stability, etc. It is suitable for large and medium-sized hot blast stoves.
Application:
High alumina bricks are mainly used for masonry blast furnace, hot blast stove, electric furnace roof, blast furnace, rotary kiln lining. In addition, high alumina bricks are also widely used as open hearth regenerative checker bricks, plugs for pouring systems, nozzle bricks, etc.