High alumina brick 75%
1) Alumina content: 75%
2) Apparent porosity: ≤23%
3) Cold crushing strength: ≥50mpa
4) Refractoriness: 1790oC
5) Refractoriness under load in 0.2MPa: ≥1520oC
6) Permanent linear change(1500oC×2h): +0.1~-0.4

high alumina brick 75% Detailed Product Description:

high alumina brick75%, silica brick, fire brick, fire clay brick, alumina bubble brick.

The most competitive price,good quality,safty packing,prompt delivery time,and excellent after-sales services.Lower ferric Oxide,lower porosity,higher refractoriness,higher density,higher CCS and exact tolerance.

High alumina brick 75% Features

1.Resisting high temperature

2.Great bulk density

3.Low iron content

4.Good eroding resistance

High alumina brick 75% Applications:

1. Steel furnaces

2. Iron making furnaces

3. Glass kiln

4. Ceramic tunnel kiln

5. Cement kiln

High alumina brick75%

Item	HA60	HA70	HA75	HA80
AL2O3(%)	≥60	≥70	≥75	≥75-80
SIO2(%)	32	22	20	≥18
Fe2O3(%)	≤1.8	≤1.8	≤1.8	≤1.8
Refractoriness °C	1790	>1800	>1825	≥1850
Bulk density,g/cm3	2.4	2.45-2.5	2.5	2.55-2.6
Softening temperature under load	≥1470	≥1520	≥1530	≥1550
Apparent porosity,%	22	<21	<21	<20
Cold Crushing strength Mpa	≥45	≥50	≥54	≥60