Low iron bricks are produced by secondary extrusion processing technology.
Low iron bricks have characteristics of low iron content, high resistance to carburization, small linear change on reheating, good chemical stability, excellent corrosion resistance, uniform internal structure and low thermal conductivity.
All kinds of heat treatment, carburizing furnace, nitriding furnace, and other industrial furnace wall and lining insulation material. Low iron bricks can be used as lining and ceiling materials for various kinds of ceramic kilns, controlled atmosphere furnace materials, and other industrial furnace insulation materials.
Name and trademark |
Low iron brick |
|||||
LI45 |
LI48 |
LI48a |
LI50 |
LI50a |
LI52 |
|
AI2O3 (%)≥ |
45 |
48 |
48 |
50 |
50 |
52 |
Fe2O3 (%)≤ |
0.7 |
0.7 |
0.6 |
0.6 |
0.5 |
0.5 |
Density (g/cm3) |
0.6 |
0.8 |
1.0 |
2.0 |
0.6 |
0.8 |
Compressive strength (MPa) |
2.0 |
3.0 |
4.2 |
25 |
2.0 |
3.5 |
Linear change Cx12h (%)≤ |
1300 |
1300 |
1300 |
1300 |
1350 |
1350 |
Thermal conductivity W/(m.k) |
0.25 |
0.35 |
0.45 |
1.6 |
0.25 |
0.35 |
Operation temperature (℃) |
1300 |
1300 |
1350 |
1350 |
1350 |
1350 |
