Product Details

High Alumina Bricks

Company Information

Surya Thermal Insulation Material Co.,Ltd is a professional manufacturer and exporter of all kinds of insulation materials.We can supply Calcium Silicate series,Ceramic Fiber series, Light insulating brick series,Foam Glass series,Rock Wool series and other insulation materials.Our insulation products have been sold well inland and have been exported to more than twenty five countries and areas,suchas Asia,Europe,Africa,etc.Our products and services have got high reputation from our customers all over the world.

Product Description

Product features :

1. High temperature resistant,

2. Performance is good,

3. High strength,

4. Show low porosity,

5. An acid, alkali resistant, aggressive good, etc

Product application:

Mainly used for thermal boilers, cement kiln, glass furnace, gas furnace, fertilizer, blast furnace hot-blast stove, coking furnace, electric furnace, casting and casting steel brick

Technical parameters:

Al2O3 (%)	>45
SiO2 (%)	40
Fe2O3 (%)	<1.0
CaO (%)	1.7
Normal temperature the flexural strength (MPa)	1.0-1.3
Volume density (%)	0.52-1.25
Normal temperature compression strength (MPa)	1.2-3.4
Softening temperature (°C)	1250
Thermal shock stability (water) times / 1000 degrees air cold	>15
Coefficient of thermal conductivity [W / (m.k)]	-1
Heavy burn line change (%)	-1 1300*12h
The highest use ° C temperature	1230-1760

Item		Unit	Index
			LZ-75	LZ-65	LZ-55	LZ-48
Al2O3≥		%	75	65	55	48
≥ refractoriness		°C	1790	1790	1770	1750
≥ softening temp under 0.2 Mpaload		°C	1520	1500	1470	1420
Liner change of heating	1500°C, 2h	%	+0.1 -0.4
	1450°C, 2h					+0.1 -0.4
≤ porosity		%	23		22
≥ pressure resistance at normal temp		Mpa	53.9	49.0	44.1	39.2