Brown Aluminum Oxide Refractory Grade

Product Detail

Brown aluminium oxide/brown fused alumina(A)

Al2O3 95%min.

Fe2O3 0.3%max.

SiO2 1.5%max.

TiO2 3.0.%max.

Magnetic material content 0.05%

color  brown ……

hardness(mohs) 9

true density 3.9

Raw Marterial: Bauxite, coal

Brown aluminium oxide is fused and crystallized under high temperature from a mixture of bauxite and other and other raw materials. It is characterized by its high hardness,good toughness and shape in size.




Characteristics:

1 high hardness,good toughness and sharp shapening

2 good grinding, polishing, high temperature resistance

3 Corrosion- resistance,  high strength, high hardness and wear- resistance




Purpose	Specification		Chemical Composition (%)				Magnetic material content(%)max
Abrasives grade			Al2O3min	Fe2O3max	SiO2max	TiO2max
	grain	12-80	95	0.3	1.5	3.0	0.05
		90-150	95	0.3	1.5	3.0	0.03
		180-220	94.5	0.3	1.5	3.5	0.02
	micropowder	240-4000	92.5	0.5	1.8	4.0	—
Refractory grade	Group Size	0-1mm 1-3mm 3-5mm 5-8mm	94.5	0.3	1.5	3.0	—
	Fine Powder	-180mesh -200mesh -240mesh -320mesh	93.5	0.5	1.5	3.5	—
color			Dark brown
Hardness(mohs)			9.0
Melting point(°C)			2250
Maximum service temperature(°C)			1900
True density(g/cm3)			3.9