Specifications

High Alumina Bricks
Refractory Brick Manufacturer
Al2O3:48~85%,Fe2O3:1.8~2.5%
Common and irregular shape

The above picture shows refractory brick for blast furnace with Al2O3 65%.

Refractory brick is dense shaped refractory material. With high refractoriness and mechanical behavior under high temperature, refractory brick is the necessary material of high-temperature services, mainly used for industrial furnaces and kilns and thermal equipment.
Refractory brick for blast furnace is mainly used in stack, bosh, bellly and bottom of blast furnace.

Tech Data

Item	Index
International code name	SK35	SK36	SK37	SK38	SK40
Al2O3  %	>48	>55	>65	>75	>80
Fe2O3  %	<2	<2	<2	<2	<2
Refractoriness °C	1750	1770	1790	1790	1790
Refractoriness under load (0.2MPa) °C,	1420	1470	1500	1520	1530
Linear change on reheating  (1500°C, 2h) %	+0.1~ -0.4	+0.1~ -0.4	+0.1~-0.4	+0.1~ -0.4	+0.1~ -0.4
Apparent porosity max %	22	22	23	23	21
Cold crushing strength Mpa,	39	44	49	54	65