Brown Fused Alumina

Product Overview

Description

Brown Fused Alumina (BFA) is a very refractory, hard and chemically resistant material. It is produced by the smelting of Calcined Bauxite in an electric arc furnace at temperatures greater than 2000°C.

Corundum is bauxite, coke (anthracite), scrap iron as main raw materials, in electric arc furnace high temperature melting nei crystals into, it has high hardness and great toughness, particle xinfengrui, grinding force is powerful, high temperature resistant, the efficiency high characteristic, is the quality of abrasive abrasive materials and advanced refractory materials. Makes with it, apply to the abrasive high-tensil strength high metal, can cut, grinding various general steel, carbon steel, alloy steel, general malleable green steel, hard to wait, also can green steel as senior refractory materials, widely used in steel, chemical and other industries.

 

 

Purpose	Specification		Chemical composition(%)				Magnetic material ≤
			Al2O3(≥)	Fe2O3(≤)	SiO2≤	TiO2≤
For abrasive	F	4#-80#	95.0	0.3	1.5	3.0	0.05
		90#-150#	94.0				0.03
		180#-240#	93.0			3.5	0.02
	P	8#-80#	95.0	0.2	1.2	3.0	0.05
		100#-150#	94.0				0.03
		180#-220#	93.0	0.3	1.5	3.5	0.02
	W	1#-63#	92.5	0.5	1.8	4.0
For refractory	size and sand	0-1mm 1-3mm 3-5mm 5-8mm 8-12mm	94.5	0.3	1.5	3.0
		0-3mm 0-5mm 0-10mm 0-25mm	94.5	0.3	1.5	3.0
	Fine powder	140F 200F 325F	93.5	0.5	1.5	3.5

 

Item	Index
Colour	Dark brown(Deep blue after calcination)
Crystal form	Trigonal crystal
Hardness(MO)	≥9.0
Melting point(°c)	2250
Maximum service temperature°c	1900
True density(g/cm3)	≥3.9
Coefficient of linear expansion	7-9

 

1.Brown fused alumina is suitable for making ceramic and resin bonded abrasive tools, used for grinding metals of high-tensile strength, such as carbon steel, general purpose alloy steel, malleable cast-iron and hard bronze etc.

 

2. It's widely used as surface preparation abrasive, cleaning, grinding, polishing of various metals, glass, rubber, mould industries.

 

 3. It also can be used as refractory material.

 

 

 

 

 

 

 

 

 

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