High Alumina Thermal Insulation Firebrick Price

Specifications

High Alumina Thermal Insulation Firebrick
Density:600-1000kg/m3
Temp: 1300/1400/1500/1550C

Insulating firebrick

Insulating firebrick gains typical advantages including low thermal conductivity,fine thermal shock resistance,low heat containment and low iron content,meanwhile,the outstanding mechanical flexibility,coupled with high insulating efficiency expands the extensive applications of IFB in a variety of industrial markets.Our insulating firebrick is manufactured from high-grade refractory powder and materials in good purity.During the process of production,organic and multiple filling materials are injected according to the required proportion,the brick is compressed in vacuum and sintered under high temperature.

 

Features

Low thermal conductivity

High purity and low iron content

Good thermal resistance with direct access to fire

Superior thermal shock resistance

Accurate dimension and easy cutting

 

Typical Applications

Cracking furnace

Conversion furnace 

Heating equipment

Refining equipment

Reproduction equipment

Hot blast stove

 

Description		Grade 23	Grade 26	Grade 28	Grade 30
Classification Temperature		1300C/2372F	1400C/2552F	1500C/2732F	1550C/2822F
Density(kg/m3)		600	800	900	1000
Cold Crushing Strength (MPa)		1.2	1.8	2.5	3.3
Modulus of Rupture(MPa)		1.0	1.7	2.3	3.1
Permanent Linear Change (%)x24hrs		≤0.6	≤0.6	≤0.8	≤0.9
Thermal Expansion  (%)1000C		0.5	0.52	0.52	0.53
Thermal Conductivity (W/m.k)	350C	0.18	0.25	0.33	0.38
	400C	0.20	0.29	0.35	0.40
	600C	0.24	0.32	0.37	0.42
Chemical Composition (%)	Al2O3	42	56	67	73
	SiO2	55	41	30	24
	Fe2O3	≤1	≤0.8	≤0.7	≤0.7
	K2O+Na2O	1.1	1.7	1.7	1.7