Brown Fused Alumina 1,abrasive grade polishing materials 2chemical catolyst carrier 3,high refractory materials

Brown fused Alumina

Brown fused Alumina is fused and crystalized under high temparature from a mixture of bauxite and other raw materials.

It is characterized by its high hardness, good toughness and sharp shape in size.

Abrasives tools made of it are suitable for grinding metals of high-tensile strength such as:

carbon stell, general-purpose alloy steel, annealed malleable iron and hard bronze, etc.

It also can be used as refractory materials.

Chmical Composition (%)

GB/T 2479-1996		CHEMICAL Composition (%, by weight )
Type	Grit Size	Al203	TiO2	CaO
HD-BC-01	P80&P100~P150	95.00~97.50	1.50~3.80	MAX 0.45
	P180~P220	94.00~97.50
	P220 Finer	MIN 92.00
HD-BC-02	P8~P80	MIN 93.00	1.50~4.20	----
	P100~P200	MIN 91.00		----
	P220 Finer	MIN 90.00	MAX 4.50	----

According to customer’s requirement, various spec of group size and mixed sizes also can be supplied.

Its reference chemical composition is as following: 

Group sizes (mm)	Main Chemical Content (%)	Other Chemical Content(%)
8~5, 5~3, 3~1, 1~0	Al2O3 MIN 94.50	SiO2 MIAX 1%	ZrO2 MAX 0.2
		CaO MAX 0.5	MgO MAX 0.4
		TiO2 MAX 3.8	Fe2O3 max 0.4

Big STAR CHINA HDLL Abrasives Brown Fused Alumina