Fire Clay Insulation Brick

▶ Description:
Fire clay insulation brick is made of local top grade fireclay materials under the high temperature according to the lasted national standard, which possesses even bulk density, high strength, low thermal conductivity and low impurity. 
 
▶ Application:
Fire clay insulation brick mainly used for the insulating lining of hot surfaces or backing heat-insulating layers of other refractory materials. The refractory linings or heat-insulating materials of the industries, such as, ethylene pyrolysis furnaces, tubular fur、
naces, reforming furnaces of synthetic ammonia, gas generators and high-temperature shullte kilns,etc.

Sunrise Brand		NG-0.5	NG-0. 6	NG-0. 8	NG-1.0	NG-1.3	NG-1.5
USA Brand		ISO125-0.5	ISO125-0.6	ISO135-0.8	ISO135-1.0	ISO140-1.2	ISO140-1.5
Max Service Temperature (℃)		1150	1200	1280	1300	1350	1400
Bulk Density (g/cm3)		0.55	0.6	0.8	1.0	1.3	1.5
Apparent Porosity (%)		80	70	60	55	50	40
Cold Crushing Strength (Mpa) ≥		1.5	2.0	2.5	3.0	4.0	6.0
Reheating Linear Change (%) ℃X 12H ≤		1250℃ -0.5	1300℃ -0.5	1350℃ -0.5	1350℃ -0.9	1350℃ -0.9	1350℃ -0.9
Thermal conductivity (W/m.k)	400℃	0.14	0.25	0.35	0.41	0.51	0.6
	600℃	0.16	0.29	0.45	0.43	0.61	0.71
	800℃	0.18	0.31	0.50	0.44	0.67	0.77
	1000℃	0.20	0.33	0.60	0.45	0.8	0.9
Al2O3 (%)		37	40	40	40	40	42
Fe2O3 (%)		1.0	1.5	1.5	1.5	2	2
SiO2 (%)		44	55	55	55	55	55

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