GENERAL INFORMATION:
Fireclay bricks are made from clinker clay by mixing, forming, drying, sintering and machining. The Al2O3 content ranges from 36% to 42%.
Fireclay bricks feature stable mechanical strength and good thermal shock resistance, withstanding high temperature up to 1750.
They are commonly applied as refractory lining directly exposed to heat or backup insulation layer in all kinds of industrial kiln or laboratory furnace.
ADVANTAGES:
Low thermal conductivity
High refractoriness
High mechanical strength
Excellent thermal shock resistance
Non standard sizes and shapes are available upon request
APPLICATIONS:
Petrochemical process heater
Heat treatment furnace
Ceramic firing kiln
Cement rotary kiln
Glass melting tank
Backup insulation
TECHNICAL DATA:
ITEM: ZGN42 GN42 RN42 RN40 RN36
Al2O3 ≥%: 42 42 42 40 36
Fe2O3 ≤%: 1.6 1.7 - - -
C.C.S. Mpa≥: 58.8 49 29.4 24.5 19.6
Refractoriness≥ºC: 1750 1750 1750 1730 1690
Permanent Linear Change ≤%
1350ºC x 2hrs: - - - 0~-0.3 0~-0.5
1450ºC x 3hrs: 0~-0.2 0~-0.3 0~-0.4(x 2hrs) - -
Refractoriness under Load(0.2 Mpa)≥: 1450 1430 1400 1350 1300
Apparent Porosity ≤%: 15 16 24 24 26
Note:
1) ZGN42 and GN42 are used in blast furnace.
2) RN42, RN 40 and RN 36 are used in hot blast stove.
3) Fireclay bricks can be designed and manufactured upon customers requirements.
230X114X65mm
230x114x76mm
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