Mo Laishi is the fireproof raw material that is bases with photograph of crystallization of 3Al2O3 · 2SiO2. Mo Laishi cent is natural Molaishi and artificial synthesis Mo Laishi two kinds big. Natural Molaishi is very few, use artificial synthesis commonly.
The photograph that the crucial index that evaluates standard of Mo Laishi quality is Molaishi is comprised and send density.
Mo Laishi has performance of good high temperature heat, because this synthesizes Molaishi and its goods,have density and purity creep of tall, high temperature leads intensity of structure of taller, high temperature low, heat expands rate is minor, fight chemistry to erode next strong, heatproof shake the gender is good wait for an advantage.
Firebrick of light qualitative Mo LaishiIt is our country's new-style fireproof material, can contact blaze directly, have spend tall, coefficient of thermal conductivity high temperature resistantly, gently small, energy-saving effect is distinct wait for a characteristic.
Light qualitative Molaishi is fireproof degree taller, can amount to 1790 ℃ above. Loading bate begins temperature 1700 ℃ of 1600 ~ . Intensity of normal temperature compression 70 ~ 260MPa. Heatproof shake sex is good. Apply to crucible of kiln of drawer of porcelain of kiln of path of roller of splitting decomposition furnace, hot-blast stove, pottery and porcelain, report, glass and the liner of all sorts of electric stove.
Firebrick manage changes light qualitative Molaishi index:
Index \ brand | 1350 | 1450 | 1550 | |
A12O3≥ % | 52 | 56 | 63 | |
Fe2O3≤ % | 1 | 0.8 | 0.6 | |
Bulk density G/cm3 | 0.7 ~ 0.8 | 0.8 ~ 1 | 1 ~ 1.2 | |
MPa of intensity of normal temperature compression | 2.1 ~ 4.2 | 3.2 ~ 4 | 3.8 ~ 5 | |
Weigh the change that burn a line % | ℃ × 12h | 1350 | 1400 | 1500 |
≤ | ± 0.5 | ± 0.5 | ± 0.8 | |
Coefficient of thermal conductivity (Average temperature 25 ℃ of 350 ± ) W/m.k | 0.2 ~ 0.4 | 0.25 ~ 0.4 | 0.35 ~ 0.4 | |
℃ of high use temperature | 1350 | 1400 | 1450 | |
Kiln of path of roller of kiln of type of hot-blast stove of splitting decomposition furnace, metallurgy, shuttle, pottery and porcelain and all sorts of electric stove lining. |