Supply Brown Aluminum Oxide for Refractory Material

Brown Aluminum Oxide for Refractory
1) Al2O3: 95%min
2) ISO 9001:2000
3) High alumina refractory
4) Professional manufacture

Brown Aluminum Oxide for Refractory Material

 

1. Description:

♦Brown fused alumina is electrically fused in an arc furnace from a mixture of bauxite at high temperature. It has brown color, high hardness and great toughness.

♦It used for refractory aluminum oxide lining mixture, pouring materials castable, etc.

♦Brown Fused Alumina is an ideal aggregate for many high alumina refractory products; it is widely used as a raw material in refractory and hundreds of other applications.

♦The main particulars are well-heat-spread, well clean surface, good water affinity, strong adhesion, and good self-sharp and high grinding efficiency.

♦Brown fused alumina is the main chemical ingredient Al₂O₃, its content is between 94.5% and 97%, and the other containing a small amount of Fe, Si, and Ti. Its micro-hardness is HV 1800-2200. Its tenacity is higher than that SiC.

 

2. Applications:

♦Brown fused alumina is high temperature, corrosion resistance, high strength properties, it poured with steel sliding gate, smelting rare metals, special alloys, ceramics, iron-smelting furnace of the lining (walls and tubes); physical and chemical containers, spark plugs, heat-resistant anti-oxidation coating.

♦ Brown Corundum heat preservation material, such as lightweight corundum brick, corundum hollow ball and fiber products, widely used in a variety of high-temperature kiln furnace walls and roof, both high temperature-resistance and heat-preservation.

♦ Mainly used for abrasion and high temperature resistant, inoxidizable aggregate and filling of shaped and monolithic refractory in steel metallurgy, various industrial stoves, electric furnace etc.

3. Grit Size Available:

0-1mm, 1-3mm, 3-5mm, 5-8mm, 8-12mm, 25-0mm, 10-0mm, 50-0mm, 30-0mm, 180#-0, 200#-0, 320#-0

Generally, we use 7 washing and 5 sieves for sieving the material.

4. Packing:

♦ PVC woven bag and paper bag: 25kg or 25kg bags to be put in 1MT bag

♦ Jumbo bag (1 MT bag): 90*90*90cm, for 1 Ton

5. Technical Data Information:

Using	Specifications		The Main Chemical Components%				Magnetic Contents%
			Al2O3	Fe2O3	SiO2	TiO2
Refractory	Size Sand	0-1mm 1-3mm 3-5mm 5-8mm 8-12mm	≥95.0	≤0.25	≤1.5	≤2.3	--------
		25-0mm 10-0mm 50-0mm 30-0mm	≥95.0	≤0.25	≤1.5	≤2.3	--------
	Powder	180#-0 200#-0 320#-0	≥94.5 ≥93.5	≤0.3	≤1.5	≤3	--------

Appearance	a- Al2O3 synonymy
Coefficient of linear expansion	7---9 (0___1600°C )
Specific heat (cal / g.°C )	0.26 (20°C- 90 °C )
Melting point	2000°C
Density ( g / cm3 )	3.97
Oxidizing reduction	No
Highest temperature in using	1900°C