|
AFM specifications
|
Chemical Composition |
Composition of AFM®
|
Chemical analysis
|
SiO2
|
74%
|
Na2O
|
11%
|
CaO
|
10%
|
MgO
|
3%
|
Al2O3
|
1%
|
| Chromium dioxide & ferric oxide |
<1% ( variable) |
Loss on ignition at 1000 deg C
|
Not more than 0.1%
|
Bulk bed density
|
1450 kg/cubm
|
Attrition test, fluidised bed 1000 hours
|
Less than 0.1%
|
AFM has a fused amorphous and extremely stable structure as
exemplified by the very high attrition strength and negligible loss under
ignition. Static leaching tests have shown zero (below ppb detection level)
leaching of metal ions over extended periods of time. It is believed that AFM
will be stable between a pH of 4 and 10 for at least 30 years. It is also expected that any leaching of metal ions will be several orders of magnitude lower than a high quality silica sand. The
data present in this section was confirmed by a UK NEMAS certified laboratory.
*******************************8
| 
