Product Details

Specifications

alumina brick:
1.Low thermal conductivity
2.high temperature resistance
3.excellent insulation
4.acid-base erosion resistant

Alumina brick

About product:

Heat insulation refractory bricks is my company the American advanced standard reference to the development and

production of a kind of high efficient, energy saving, high grade product. The products have been widely used in

metallurgical hot dip galvanized furnace, silicon steel processing furnace, blast furnace stove; The petrochemical

industry ethylene cracking furnace, hydrogen furnace, a transformation furnace, sulfur recovery units; And other such

as roller kiln, spindle type kiln, prevent (fight) carburizing (n) the stove and so on thermal device, and satisfactory

results.

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) 350 degrees +-10 degrees	-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

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