Brown fused alumina for refractory 0-1mm 1-3mm 3-5mm 5-8mm

Brown fused alumina for refractory using high-quality calcined bauxite, coke, and iron by controlled melting in an electric arc furnace at high temperatures. Brown fused alumina for refractory possesses high purity, good crystal, strong fluidity, low coefficient of linear expansion, good corrosion resistance, and so on. Through decades of practical application in the refractory industry, Brown fused alumina can’t burst, pulverize and craze in the using course. In particular, its performance-cost ratio is much higher than other refractory materials, making brown fused alumina become the best aggregate and padding of brown fused alumina refractory materials.

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℃)

 

Brown Fused Alumina(FAQ)

What is grit size?

Grit size typically runs from coarse (16 -24 grit), medium (36 – 60 grit) and fine (80-120 grit).  Superfine grits run from 150 and higher.  Grinding wheels usually will be between 24 and 100 grit.  Honing stones and jointing stones and other polishing abrasives will be 150 grit and higher. 

Can i get sample in free , how long is the time?

Yes, certainly. We will provide the sample is in free below 5 kgs for free, and the freight cost for free in 1kg. We could arrange the existing samples express delivery immediately. For any special samples requirement, it need max 7 days finished. Usually we send samples by TNT ,FEDEX,

What is corundum?

Corundum is a mineral from the category of oxides and hydroxides and is the most frequently used industrial mineral worldwide. It also occurs naturally as a gemstone (sapphire, emerald, ruby). Chemically corundum is aluminium oxide with the chemical formula Al2O3.

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