Clay brick tunnel kiln clay refractory brick material tunnel
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Tunnel Kiln Clay Fire Blocks Thermal Insulation Basic Refractory
Bricks Material
Clay refractory bricks are refractory products with alumina content
of 30~48% made of clay clinker as aggregate and refractory clay as
binder.
The raw materials for making clay refractory bricks are clay
minerals, and refractory clays can generally be divided into hard
clay and light clay. In the manufacturing process of refractory
materials, the former is mostly used as clinker after calcination;
the latter has good plasticity after adding water, and is easy to
sinter, and is mostly used as a binder.
The clay minerals mainly include kaolinite (Al2O3, 2SiO2, 2H2O),
dickite (same composition as kaolinite, but different lattice
constants), montmorillonite (Al2O3, 4SiO2, 6H2O) and mica minerals.
Clay refractory materials are abundant in raw materials, easy to
process, and inexpensive, so they are more widely used than any
other refractory materials. Chimneys and chimneys for high
temperature furnaces, hot blast furnaces, ironmaking furnaces,
ladle and casting systems as well as soaking furnaces, reheating
furnaces, non-ferrous metal melting furnaces, kilns in the silicate
and chemical industries, and all thermal equipment flues etc.
Technical parameters of Tunnel Kiln Clay Fire Blocks Thermal Insulation Basic Refractory
Bricks Material
| Item | Index | | N-1 | N-2a | N-2b | N-3a | N-3b | N-4 | N-5 | N-6 | | refractoriness,℃≥ | 1570 | 1730 | 1730 | 1710 | 1710 | 1690 | 1670 | 1580 | Starting temperature of softening under load,℃≥ [0.2MPa x0.6%] | 1400 | 1350 | -- | 1320 | -- | 1300 | -- | -- | | Rate of change of reburning line,% | 1400℃x2h | +0.1-0.4 | +0.1-0.5 | +0.2-0.5 | -- | -- | -- | -- | -- | | 1350℃x2h | -- | -- | -- | +0.2-0.5 | +0.2-0.5 | +0.2-0.5 | +0.2-0.5 | | | apparent porosity,%≤ | 22 | 26 | 24 | 24 | 26 | 24 | 26 | 28 | | ambient compressive strength,MPa≥ | 30.0 | 20.0 | 25.0 | 20.0 | 15.0 | 20.0 | 15.0 | 15.0 |
Application of Refractory Bricks in Clay Brick Plant Red Clay Brick
Production Line Fired Bricks |
