Brown Fused Alumina Use of Brown Corundum Abrasive Material Fused Alumina

• Customization: Available
• Natural Abrasive Type: Natural Corundum
• Artificial Abrasive Type: Corundum Abrasives
• Application: Metal Parts
• Function: Surface Finish
• Source: Artificial Abrasives
• Particle Size: Abrasive
• Hardness: Conventional Abrasive
• Crystal System: Hexzagon
• Colour: White
• Packing Density (g/cm3): 1.75-1.95
• Mohs Hardness: 9
• Size(mm): 8-5 5-3 3-1 1-0
• Fine(Mesh): -80,-120,-240,-320
• Transport Package: Ton Bag
• Specification: 8-5 5-3 3-1 1-0
• Trademark: Fuda
• Origin: China
• HS Code: 2818109000
• Production Capacity: 2000tons/Year

Product Description

 

What material is brown corundum
The main component of brown corundum is alumina (Al2O3), which is usually found between 50 and 96%, depending on the grade. In addition to alumina, it also contains a small amount of silica (SiO2), titanium oxide (TiO2) and ferric oxide (Fe2O3) and other impurities.
The production process of brown corundum is to make high quality bauxite, anthracite and iron chips in the arc furnace through high temperature melting, and then through the self-grinder, and magnetic separation to remove iron, and finally sieve into products of different particle size. The brown corundum of this material has the performance characteristics of high purity, good crystallization, good self-sharpness, strong fluidity, low expansion coefficient, corrosion resistance, high temperature resistance and good thermal stability.

 

Specification

 

Type Properties		Lower sodium I				Middle sodium II
		Fraction(mesh) 0-1 1-2 3-5m/m		Fine(mesh) 0-180 0-320		Fraction(mesh) 0-1 1-2 3-5m/m		Fine(mesh) 0-180 0-320
		Guarantee Value	Typical value	Guarantee Value	Typical value	Guarantee Value	Typical value	Guarantee Value	Typical value
Chemical Composition (%)	α-Al2O3	≥99	99.3	≥98.5	99.23	≥99	99.14	≥98.5	98.75
	SiO2	≤0.2	0.15	≤0.3	0.22	≤0.4	0.12	≤0.4	0.19
	Fe2O3	≤0.2	0.04	≤0.25	0.04	≤0.2	0.01	≤0.25	0.05
	Na2O	≤0.15	0.12	≤0.25	0.18	≤0.4	0.35	≤0.5	0.23
Principal crystalline phase		α-Al2O3
Crystal system		Hexzagon
Colour		white
True density (g/cm^3)		≥3.95
Packing density (g/cm^3)		1.75-1.95
Mohs hardness		9
Linear expansion (1/^°C)		8.3×10^-4
Size(mm)		8-5 5-3 3-1 1-0
Fine(mesh)		-80,-120,-240,-320
Micropowder(um)		3-5 5-10
Test standard		GB/T3044-89
Packing		25kg/bag 1000kg/big bag
Usage		Refractories

Special particle size can be customized