Ground limestone
Ground limestone for VFK 55/III-V fluidised bed boilers
Ground limestone VFK 55 is produced by grinding natural limestone to the required fineness.
Area Of Use
Its high chemical purity and granulometry make it an effective sorbent for the removal of sulphur oxide from fluidised bed boiler flue gases.
Norm
ČSN 72 1210, ČSN 72 1217, ČSN 72 1220, PN 72 1221
Technical parameters
ISO 9001
Quality management systém is certificated according to ČSN EN ISO 9001:2016.
ISO 14001
Quality management systém is certificated according to ČSN EN ISO 9001:2016.
Physical Properties
| Limestone VFK 55 | unit | PN 72 1221 | achieved parameters |
| moisture | % | ˂ 1 | 0,08 |
| bulk weight | kg/m3 | 1346 | |
| granulation - residue sieve | |||
| - residue sieve 0,100 mm | % | 50-75 | 65,0 |
| - residue sieve 0,200 mm | % | 32-50 | 35,4 |
| - residue sieve 0,500 mm | % | 2-25 | 3,7 |
| - residue sieve 0,630 mm | % | 1-9 | |
| - residue sieve 0,710 mm | % | 0-2 | 1,1 |
Chemical Properties
| Limestone VFK 55 | unit | ČSN 72 1217, class III | ČSN 72 1217, class V | achieved parameters |
| CaCO3 + MgCO3 | % | 96,0 | 93,0 | 98,67 |
| MgCO3 only | % | 2,0 | 6,0 | 0,73 |
| SiO2 | % | 1,5 | 4,5 | 0,68 |
| Al2O3 + Fe2O3 | % | 0,8 | 3,5 | 0,53 |
| Fe2O3 only | % | 0,3 | 2,0 | 0,07 |
| SO3 | % | 0,2 | 0,3 | 0,04 |