Low Conductivity Fire Clay Insulation Refracory Brick Chinese Supplier

Fireclay insulation brick is made of local top grade fireclay materials with a content of 35%~42% Al2O3 according to the lasted national standard. The working temperature of them is from 1000-1200 ºC and bulk density is 0.5-1.0 g/cm3.

Features of Fireclay Insulation Brick:

1.Low thermal conductivity. 
2.Excellent insulating property. 
3.Steady quality. 
4.Low impurities.
 
Application of Fireclay Insulation Brick:

Clay insulation bricks have a wide range of uses, mainly used in thermal boilers, glass furnaces, cement furnaces, fertilizer gas furnaces, blast furnaces, hot blast furnaces, coking furnaces, electric furnaces, etc.

Technical Data of Fireclay Insulation Brick:

Item		Unit	Fire Clay Insulation Brick
Brand			FNG-0.8	FNG-1.0	FNG-1.3
Chemical Composition	Al2O3	%	≥15	≥20	≥25
	SiO2	%	≤82	≤77	≤70
	Fe2O3	%	≤2	≤2.5	≤3
Bulk Density		g/cm3	0.8	1.0	1.3
Apparent Porosity		%	≤75	≤65	≤55
Refractoriness		℃	≥1680	≥1690	≥1700
Cold Crushing Strength		MPa	≥8	≥10	≥15
Permanent Linear Change		%	≤2%
			1250℃	1350℃	1400℃
Thermal Conductivity (350±25℃)		w/m.k	≤0.6	≤0.5	≤0.35