Aluminum oxide which is a leading abrasive is majorly used for the sake of its hardness and strength. It is also naturally corundum. It is basically a chemical compound having aluminium and oxygen with a chemical formula of Al2O3. With a common dialect aluminum oxide is also called as alumina, alkoxide, aloxite, and alundum depending on specific performance amd requirement. In natural abundancy it is available in the crystalline form called as polymorphic phase.
Aluminium oxide is available in mineral corundum which itself is a unique variety of itself forming precious gemstone ruby and sapphire. This is majorly employed as an abrasive and as a refractory material taken advantage of its high melting point.
Properties of Aluminium oxide
- Aluminum oxide is basically an electrical insulator and also have a good value of thermal conductivity.
- Aluminum oxide is basically insoluble in water.
- Have a good deal of hardness which makes it’s a perfect match for abrasive media and also makes it’s a perfect fit for cutting tools
- The thickness of aluminium oxide and hardness can be further enhanced by using the process of anodising.
- Aluminium oxide is an amphoteric material which means that it will readily react with both acids as well as bases and thus neutralise both of them while forming a salt.
Uses of aluminum oxide
- As aluminium oxide is a chemically inert material, it is regarded as a perfect filler for bricks, plastics and also in heavy clayware.
- Aluminium oxide in india is having a leading role in abrasive medias in blasting industry because if their inert nature and cost efficiency.
- Aluminium oxide also have its leading role in gemstone industry as such it is used in the process of sapphire and rubies formation.
- Aluminum oxide is basically having a high boiling and melting point which makes it a perfect fit for areas prone to high temperature.
Advantages of using Aluminium oxide
- Aluminium oxide is extremely resistant of fracturing thus this makes its more durable and thus increases its workability.
- Renowned for its extremely hard wearing nature aluminium oxide has a a very long cutting life and thus this makes aluminium cost efficient and sustainable.
- Using aluminium oxide at a consistent rate provide aesthetically pleasing profile along with desirable texture.
- Though it has a strong resilient behaviour it is applied on tough materials.
- It is as per certain reasons environment friendly because it doesn’t produce much dust as compared to other abrasive medias.
Methods of aluminium oxide productions
Aluminium oxide in India is the majorly the by product of bauxite which is the principal aluminium ore. Aluminium oxide is major comprised of bauxite ore, as such gibbsite, boehmite and diaspora along with the additional impurities of iron oxide and hydroxides, quartz and clay materials.
Bauxite which ultimately produces aluminium oxide is purified by the buyers process. Except of sio2 the other component of bauxite doesn’t dissolve in water. The process starts by drying the crushed and washed bauxite which itself is dissolved in caustic soda to form the slurry and heated to the temperature of about 230 – 520 degrees.
In brief bauxite undergo pre- desilication to form solatite then undergo autoclave digestion to form NaOH further this undergo filteration and form red mud this then undergo precipitation and form seeds this then undergo filtration form Al(0H)3 this then undergo oxalate removal and form oxalate and then it from recycled NaOH. In such aluminium oxide is produced.
Specification of aluminium oxide
For refractory purpose: on
- size sand 0 – 1 mm, 1 -3 mm, 3-5mm, 5- 8mm
- Fine powder: 180 # -0, 200 # -0, 320 # - 0i
- AL2O3 QUANTITY: 99.2 min, Na203 quantity: 00.3 – 0.4 max, Si203 quantity- 0.1 max, Cao – 0.4 – 0.5 MAX
- Magnetic material content (%): 00.001 – 0.003 max
For abrasive purpose:
- Fine powder: 12 # - 80, 90 # - 150, 180 # - 240
- AL2O3 QUANTITY: 99.2 min, Na203 quantity: 00.3 – 0.5 max, Si203 quantity- 0.1 max, Cao – 0.4 MAX
- Magnetic material content (%): 00.002 – 0.003 max
Classification of aluminium oxide
On average it have their classifications based on the methods of their productions. Most probably the aluminium oxide ranges its verity as per specified. Most commonly we use brown aluminium oxide, white aluminium oxide and black aluminium oxide.
White aluminium oxide
White aluminium oxide or white fused aluminium oxide is mainly produced by the fusion of high purity bayers processed alumina in electric arc furnace on a temperature of about 2050 degree. The white fused alumina or aluminium oxide which we produce have well defined texture,
low magnetic substance content, high bulk density a good bulk of toughness and an enhanced workability along with high cleanliness aspirate.
This kind of aluminum oxide is majorly recommended for only grinding of high carbon steel, chilled steel and high speed steel. It is also recommended as polishing media along using as a laminating flooring media.
Brown aluminium oxide
Brown aluminium oxide is basically composed of bauxite coke at a high temperature meanwhile during the process of smelting. The entire process of Aluminium oxide formation inside the electric arc furnace. Brown aluminium basically have high crystalized structure, good deal of hardness, have a well depicted linear fluidity and a very less adhesion in its use.
The major corns which lead to the burgeoning demand of brown aluminium is that it is non explosive, non-cracking and non-pulverized and leaves no rust spots. They are employed in the production of refractory materials and bricks. Brown aluminium is a perfect choice if abrasive medias in sand blasting because of its environment friendly nature.
Black aluminium oxide
Black aluminium oxide is manufactured through the process of electrofusion of bauxite and iron oxide and micro elements. The entire process takes place in the tilting arc furnace. There is a vast variety of black aluminium oxide in India differentiated as per their sizes. Black aluminium oxide in India is a perfect choice for economically aspirant situation. Black aluminium oxide in India is majorly employed in dry and wet process application.
Aluminium oxide manufacturers in India
As we are pretty much aware that India is a hub of industries it is one of the leading aluminium oxide manufacturers in India. Airo blast is one of the leading manufacturers, suppliers and exporters of a vast range of products as such blast rooms, sand blasting machines, shot blasting machines, sand blasting nozzles, zinc spray guns, thermal spray guns, abrasive garnet and so on.
We also manufacture a wide range of product such as copper slag, glass beads, steel grits, steel shots, aluminum oxide, cut wire shots, white aluminum oxide, walnut shell abrasives, plastic media, silicon carbide, quartz sand grains, high carbon cut wire shots, large glass beads, low carbon cut wire shots, large glass beads and many more.
Aluminium oxide for sale in India
product in India is having a vast range company for their production and as such depending upon their workability and requirements. The oxide which we produce is manufactured as per the standards of international standards. We are a leading manufacturers, suppliers and exporters of a vast range of products in the entire industry as such as oxide, flame spray gun, zinc spray gun thermal spray gun and so on.
The price of aluminium oxide in India is basically depends upon the type of abrasives, its specification and its performance
Here are some of the factors which accounts for the price of aluminium oxide in India
Property | Values |
Melting point | 2072degree |
Hardness | 15- 19 Gap |
Boiling point | 2,977-degree c |
Mechanical strength | 300 – 630 Map |
Electrical resistivity | Approx. (10)3 Ohm m |
Density | 3.95 g/cm3 |
Molecular mass | 101.96 g/mol |
Appearance | Solid |
Compressive strength | 2,000- 4000 MPa |
Thermal conductivity | 20 – 30 w/mm |
The above-mentioned specification defines the major attributions towards the price of aluminium oxide in India
Working of sand blasting machines
- As we know that shot blasting machine is a complex machine used for the abrasive blasting for providing required texture, removal of rust and old paints from the metal surfaces.
- Shot blasting machine basically is a machine used used for shot peening and cleaning of metal surfaces such as steel surfaces, metal parts, rusted metal parts.
- Shots blasting machine have a rust collection to prevent dust from escaping outside.
- There is a vast range of shot blasting machine for different type of metals such as tumble blast shot blasting machine, table type shot blasting machine, hanger type shot blasting machine, rotary barrel type machine and many more.
- Shot blasting machine is basically composed of blade, directional sieve, spindle seat, motor and many other parts. During the process of high-speed abrasion in which abrasive medias are shoot with a high speed and with a good bulk of pressure. In such process of abrasion of steel shots in shot blasting machine centrifugal force and wind forces are also generated with a good reign of additional energy.
- Fine aluminium oxide powder is sealed under high pressure and then abrased with a good amount of pressure and force.