1.Firecaly brick for blast furnace is used in the part of throat, stack, hearth, bottom for a small blast furnace and the stack for a big blast furnace.
2.The mian features: High compressive strength in normal temperature, High ability for anti-abrasion during work, Low shrinkage degree under high temperature so as to maintaining an integrity of the furnace lining; Low apparent porosity, and Fe2O3 content to reduce the carbon deposit in the blowhole and avoid the bricks broken in case of expansion; Seldom melting point settings shape.
Index |
Item |
ZGN-42 |
GN-42 |
Al2O3 ,%≥ |
42 |
42 |
Fe2O3 ,%≤ |
1.6 |
1.7 |
Refractoriness, CN |
176 |
176 |
0.2Mpa refractoriness under load , ℃≥ |
1450 |
1430 |
Reheating linear change
% 1450℃,3h |
0~ -0.2 |
0~ -0.3 |
Apparent porosity, %≤ |
15 |
16 |
Compress strength, N/mm2≥ |
58.8 |
49.0 |
Ventilative |
It must be tested and list the actual measuring data in the quality Certification. |
Firecaly brick for blast furnace packing
Fireclay bricks are packed on wooden pallet and then polyethylene film is placed over it, finally the package is tied up with plastic-steel strips.
Fireclay brick for blast furnace minimum order
20 tons
Fireclay brick for blast furnace delivery time
3000 mt firebricks can be deliverd per month.
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