Description

Description

Refractory Bricks are materials designed to withstand high temperatures, chemical corrosion, and thermal shock.  Made from raw materials like bauxite, silica, and magnesite, refractory bricks offer excellent compressive strength, heat resistance, and thermal stability. They effectively insulate heat, improve energy efficiency, and extend the service life of equipment. Depending on the application, there are various types of refractory bricks, including high alumina, silica, and magnesite bricks, which are essential for furnaces, boilers, and other high-temperature devices.

Property	Unit	High Alumina Brick	Silica Brick	Clay Brick	Magnesite Brick	Chrome Brick
Al₂O₃	%	48-90	0-10	30-40	0-10	5-25
SiO₂	%	2-30	90-98	50-70	0-5	0-30
Fe₂O₃	%	≤ 2	≤ 1	≤ 2	≤ 2	≤ 5
CaO	%	≤ 5	≤ 2	≤ 5	≥ 90	20-30
MgO	%	≤ 5	≤ 1	≤ 2	≥ 90	0-15
Cr₂O₃	%	0-5	0-2	0-2	0-5	45-55
Compressive Strength	MPa	50-120	30-90	30-70	100-250	80-180
Bulk Density	g/cm³	2.3-2.75	2.3-2.5	2.2-2.4	2.9-3.0	2.8-3.0
Refractoriness	°C	1700-1800	1580-1700	1300-1400	2800-3000	1700-1900
Refractoriness Under Load	°C	1600-1700	1500-1600	1300-1400	2800-3000	1600-1800
Thermal Expansion Coefficient	×10⁻⁶/°C	5-8	6-9	6-7	4-6	5-7
Thermal Conductivity	W/m·K	1.0-2.5	1.3-2.0	1.2-1.8	3.5-5.5	2.0-3.5
Service Temperature Range	°C	1600-1800	1400-1600	1300-1400	1800-3000	1600-18

 

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Refractory Brick Explore the durability and heat resistance of fire bricks (refractory brick) for high-temperature applications in fireplaces, kilns, and furnaces.

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