Alumina Bubble, Refractory

Place of Origin: Henan China (Mainland) Brand Name: Zhenghuan Shape: round

Color: White



Bubble Alumian is made by fusing special high purity alumina.

Feature's Description : Alumina bubble Bubble alumina brick

( ) Working temp. 1800 Al2O3 (% ) >= 99. 0

Al2O3 (% ) >= 99. 0 SiO2 (% ) <= 0. 20

SiO2 (% ) <= 0. 20 Fe2O3 (% ) <= 0. 15

Fe2O3 (% ) <= 0. 15 (% ) Apparent Porosity 55. 0- 65. 0

(g/ cm3) Packing density 0. 5- 1. 0 (g/ cm3) Bulk density 1. 35- 1. 70

Grain size ( mm ) 0. 2- 5. 0 (MPa) Cold crushing strength >= 10. 0

Main crystalline phase a- Al2O3 ( ) Refractoriness >= 1850

( ) Refractoriness under load >1700

(% ) (1600 3h) Reheating linear change ?0. 3

( 10- 6/ ) (1300 ) Thermal expansion coefficient 8. 6

(W/ mk) Thermal conductivity <= 0. 9

(110 air- cooling) Thermal shock resistance >20

Main crystalline phase a- Al2O3