Supply high alumina firebricks

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Supply high alumina firebricks  

 

 

 High alumina firebricks with unique advanced technology, the temperature of refractoriness under load is normally above 1420~1550°C , which is higher than the fireclay brick and it increases along with the AL2O3 content enhances.

 

 High alumina firebricks  characteristices

 

1. High intensity for pressure

2. Good thermal shock stability

3. Strong abrasion and corrosion resistance
4. High cold crushing strength
5. Excellent abrasion resistance at cold and hot conditions

 

  High alumina firebricks advantage

 

Good ability of anti-acidity, anti-metal fluid corrode and anti-oxidation.
(5)

 

 High alumina firebricks applications

 

1. Lower the heat capacity of the furnace

2. Used normally in industry furnaces such as Blast furnace, hot-blast furnace and EAF etc

 

  High alumina firebricks physical and chemical indexes

 

Item	LZ-75	LZ-65	LZ-55	LZ-48
Al2O3  %	≥75	≥65	≥55	≥48
Cold crushing strength ,MPa	≥54	≥49	≥44	≥40
Apparent porosity  ,%	≤23	≤23	≤22	≤22
Refractoriness under load , °C	≥1520	≥1500	≥1470	≥1420
Reheating linear change (1500°C,2h) %	+0.1-0.4	+0.1-0.4	+0.1-0.4	(1450°C,2h)+0.1-0.4
Refractoriness  °C	>1790	>1790	>1770	>1750

 

 

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