Main Data
See also
Fine grain reactive alumina
Reactive alumina GRT represents ready-to-use finely dispersed corundum powder.
Technical characteristics
| Rate for grade | |
|---|---|
| GRT | |
| Spec. 14-194-280-07 rev.1 | |
|
Mass fraction (of baked substance), %: SiO2, maximum Fe2O3, maximum Na2O, maximum |
0,05 0,1 0,35 |
|
Distrubution of particles in the sizes, microns: - D50* - D90** |
2,5 7,5 |
| Compressive, cm2/g, не менее | 8500 |
* 50% of particles have the size less than the one specified
** 90% of particles have the size less than the one specified
Example: D50=1,71 microns and D90=5,64 microns means that 50% of particles in a powder from all its weight have the size less than 1,71 microns, 90% of particles - the size less than 5,64 microns.
GRT is specially developed product, which application in manufacture of refractories allows reaching the following results:
− Decrease temperature of sintering and synthesis of necessary phases at burning due to high reactive capability;
− Obtain denser particle-particle packing and denser material structure being more resistant to influence of aggressive reagents in manufactue of fire-resistant low- and ultra-low cement concretes;
− Improve physical and operational characteristics of concretes and concrete products due to denser structure, for example:
• Mechanical durability ("cold" and high-temperature);
• Abrasive stability, etc.
Jet alumina GRT is a synthetic product made of highly-purity technical alumina, which results in low content of trace constituents.