Silica Brick
Silicon brick adopts high grade silica as raw material，the content of SiO2 is more than 93%. The structure of this silicon brick is compact and the compositions are well proportional. It has a high purity and low impunity. It is widely used in high temperature industries, such as coke oven, hot blast stove, and glass melting furnaces and so on.
Technical Index
Brands Items | GZ-96 | GZ-95 | GZ-94 |
SiO2 % min | 96 | 95 | 94 |
Fe2O3 % No more than | 1.0 | 1.2 | 1.4 |
RUL ℃ min | 1660 | 1650 | 1640 1620（Cementing silica） |
AP % No more than | 22 | 22 | 24 |
CCS MPa min | 29.4 | 24.5 | 19.6 |
True Density g/cm3 No more than | 2.34 | 2.35 | 2.35 |
Semi-Silica Brick
The semi-silica brick is made of high grade refractory clay and Pyrophyllite etc. SiO2 content is more than 65%. The content of AL2O3 is from 15% to 30 %. At high temperature, its volume is steady and corrosion resistance is excellent. It is used as the kiln bottom, kiln liner and flue etc.
Technical Index
Brands Items | E70 | E65 |
SiO2 % min | 70 | 65 |
Fe2O3 % max | 2.0 | 2.0 |
Na2O+K2O % max | 1.0 | 1.0 |
RUL ℃ min | 1340 | 1360 |
AP % max | 22 | 24 |
CCS MPa min | 27 | 38 |
BD g/cm3 min | 2.10 | 2.10 |
Refractoriness ℃ min | 1610 | 1610 |
TSR 1100℃ Water-cooled min | 7 | 7 |
Clay Brick
Clay brick is made of high grade calcined clay and high quality refractory clay. It is used in blast furnace, hot blast stove, cupola, soaking pit, heating furnace, non-ferrous metal, silicate industry, the furnaces of chemical industry and the chimney, flu of high temperature industries.
Technical Index
Brands Items | DRL-130 | DRL-125 | DRL-120 |
Al2O3 % | 44 | 42 | 39 |
AP % | 18 | 20 | 22 |
BD g/cm3 | 2.3 | 2.15 | 2.1 |
CCS MPa | 40 | 35 | 35 |
Creeping Rate % | 0.2 | 0.2 | 0.2 |
PLC% （1400℃×2h) | 0.1-0.2 | 0.1-0.2 | 0.1-0.2 |
RUL ℃ | 1340 | 1300 | 1260 |
