data sheets qkhal
Typical Physical Properties
| product |
qk-hal |
| true density g/cc |
0.75 |
| density g/cc |
0.42 |
| crush strength psi |
6000 |
| D10 microns |
45 |
| D50 microns |
125 |
| D90 microns |
255 |
| top effective size microns |
300 |
| floating ratio |
95% |
| thermal conductivity W/mK |
0.08 |
| oil obsorption g/cc |
0.5 |
| hardness Moh's scale |
6 |
| pH Value |
6-8 |
| melting point |
1750 degree C |
| color |
70WhH* |
| Looks like |
free flowing powder |
* WhH=hunter Lab index
Typical Chemical Composition
| Chemical name |
typical value |
| SiO2 |
53% |
| Al2O3 |
38-43% |
| Fe2O3 |
1.3-1.8% |
| CaO |
0.5% |
| TiO2 |
0.09% |
| MgO |
0.8% |
| K2O |
0.3% |
| Na2O |
0.5% |
| loss on ignition |
0.36% |
|
|
