Specifications

High Aluminium Refractory Bricks
1.AL2O3: 30%-85%
2.Refractories:1670C
3.Size:230x114x65/75mm
4.ISO9000 certificate

High Aluminium Fire Bricks

 

1. Product description:  

Alumina bricks are made from bauxite of super quality, bonding chamotte and additives. The main Al203 content is 48%-99%. The advantages of high alumina bricks are high refractoriness, anti alkaline/acid erosions, good strength under high temperature and good thermal shock resistance. High alumina bricks were widely accepted in thermal equipment of metallurgy, petroleum, chemical industry, construction materials, machinery and militaries etc.

 

2. Features of fire bricks:  

1) Low bulk density, low thermal conductivity, good thermal insulation performance.

2) Refractory category allow direct contact of fire, suitable ofr various atmosphere

3) Good integrity with furnace lining, long service life, easy operation, could be shaped freely

4) Product specification: standard form, normal standard, shaped and special shaped bricks.

5)Can be used in various kilns because of its cheapness and general tray package. Among all of the refractory        materials, it is the most widely used.

3. Applications of fire bricks:  

1)Furnaces of metallurgy industry, heat treatment furnace

2)Furnaces of chemical industry and construction industry.

3) Furnace of incineration of garbage, recirculating fluidized bed furnace

 

4. Physical and chemical index of fire bricks:  

 

Item/Grade	Fire Clay Brick				High Alumina Brick
	SK-30	SK-32	SK-34	SK-35	SK-36	SK-37	SK-38	SK-40
AL 2 O 3   %  (≥)	30	35	38	45	55	65	70	85
Fe 2 O 3   %  (≤)	2.5	2.5	2.0	2.0	2.0	2.0	2.0	2.0
Refractoriness(SK)	30	32	34	35	36	37	38	40
Refractoriness under load, 0.2MPa, °C (≥)	1250	1300	1360	1420	1450	1480	1530	1600
Apparent porosity (%)	22-26	22-26	20-24	20-22	20-23	20-23	20-22	18-20
Bulk density (g/cm³)	1.9-2.0	1.95-2.1	2.1-2.2	2.15-2.22	2.25-2.4	2.3-2.5	2.4-2.6	2.5-2.7
Cold crushing strength ,MPa  (≥)	20	25	30	40	45	50	60	70