Brown Fused Alumina Micro Grits

Brown Fused Alumina Micro Grits
Brown fused alumina for refractory 0-1mm 1-3mm 3-5mm 5-8mm production process：
Brown Fused Alumina Refractory uses the high-quality bauxite as raw material, mix with anthracite and iron fillings, melting at 2000℃ in the electrical arc, then crushing and screening the various size.

Application of brown fused alumina for refractory 0-1mm 1-3mm 3-5mm 5-8mm：
Brown Fused Alumina is utilized within the refractory industry to manufacture high alumina fired and monolithic refractory products like bricks and pre-cast shapes. Unshaped refractory like gunning material, ramming refractory mixes, refractory castables, refractory mortars refractory raw materials.

Chemical compositions of brown fused alumina for refractory 0-1mm 1-3mm 3-5mm 5-8mm：
 

Item	First grade
Al2O3	93% – 97%
SiO2	1.0% – 3.0%
Fe2O3	0.2% – 1.0%
TiO2	1.5% – 3.8%
Bulk density	1.5g/cm³
True density	3.95g-4.0g/cm³

Physical properties of brown fused alumina for refractory 0-1mm 1-3mm 3-5mm 5-8mm：
 

Item	Index
Color	Dark Brown, Light brown
Crystal form	Trigonal crystal system, hexagonal crystal system
Hardness	9 Mohs
Melting point	2250℃
Magnetic content	≤0.05%
Linear expansion coefficient	7-9（0 – 1600℃）

Blasting systems

– Pressure blast systems
– Injection blast cabinets

Applications

Blast-cleaning:
– Cleaning metallic surfaces with removal of material (abrasive effect)
– Removing rust and scale from metallic surfaces
– Removing tempering colour

Surface finishing:
– Creating a matt finish on surfaces
– Producing specific visual effects

Other:
– Roughening metallic surfaces
– Creating a matt finish on glass
– Deburring
– Processing very hard components