Tap Hole Clays

Tap Hole Clays for Blast Furnaces
Product Ferroclay 23 Ferrocaly 704 Ferroclay 55R
Application Tap hole clay Tap hole clay Tap hole clay
Chemical Analysis, % SiO2 65-70 % 65-70 % 21%
Al2O3 8%, min 6% min 54%
SiC 5%, min 4%, max 19%
Fe2O3 1,5%, max 1,5%, max 14%
C 9%, min 9%, min 12%
Bond Organic-ceramic
Grain size, mm 0 - 6 0 - 6 0 - 6
Density, kg/lt 1,8 1,8 2,23
Qualities after backing Cold crushing strength, kg/cm2 at 110°C 50 50 12
Density, kg/lt 2,15
Porosity, % 20
Application temperature °C 1650 1650 1650