Silica Ramming Mass (GYDL)

Model
Type GYDL-1 GYDL-2 GYDL-3 GYDL-4
Chemical composition (%) SiO2� 95 96 96 97
Al2O3� 0.7 0.6 0.6 0.5
Fe2O3� 0.6 0.6 0.5 0.5
Cold crushing strength (Mpa) 1250��3h
After firing at 15 15 10 10
Ａpparent porosity (%) 1250��3h
After firing at 26 26 25 25
Linear changing after burnt (%) 1250��3h
After firing at 0�+1.6 0�+1.2
Bulk density (gcm3) 1250��3h
After firing at 1.9 1.9 2.0 2.0
Refractoriness (�) 1620 1630 1650 1650
Max. grain size of aggregate (mm) 5 4.5 4.5 4.2
Amount for construction (kgm3) 2100 2100 2200 2200
Mathod of construction Jolt or ramming
Application Melting furance for nonferrous metals
Characteristc Cost down; Thernal insulation; Economy electricity; Nostick residue; Fast drying; Chemical bonded; Corrosion resistance.
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