Aluminum oxide is a white odorless crystalline powder

Overview of Aluminum Oxide

Aluminum oxide is an inorganic substance, a chemical formula Al2O3, a highly hard-to-me melting point of 2054 ° C, a boiling point of 2980 ° C, an ionized ionic crystal which is ionized at high temperatures, is often used in manufacturing refractories.

Aluminum oxide is a white odorless crystalline powder. Water-insoluble. Properties (both physical and chemical) vary according to the method of preparation; different methods give different crystalline modifications. The variety formed at very high temperatures is quite inert chemically.

 Aluminum oxide is also known as alumina in mining, ceramic industries and materials. Alumina is generally difficult to dissolve in the white solid, odorless, tasteless, very hard, easy to absorb tide, and not tide (burning is not harmful). Alumina is a typical amphoteric oxide (corundum is the alpha-shaped belonging to the densest accumulation, is an inert compound, slightly soluble in acid-base resistance), can be dissolved in inorganic acid and alkaline solution, almost insoluble in water and non-pole Sexy organic solvent.

 Alumina is a thermally unstable and insoluble compound that naturally occurs in various minerals, such as corundum, oxide crystal variants and aluminum mines, is considered to be its main aluminum ore. Alumina is often used in industrial ceramic, inert white amorphous materials. Due to its excellent characteristics, alumina has contributed a lot to life extension and social enhancement. It is widely used in medical fields and modern war.

 Aluminum mines (Al2O3 · H₂O and Al2O3 ·3H₂O) are the main minerals in the natural boundary, which is pulverized with high-temperature hydroxide solution to obtain a sodium aluminate solution; filtrate remove the residue, cool the filtrate and add hydrogen Aluminum oxide crystals, stirred for a long time, sodium aluminate solution can decompose the precipitation of aluminum oxide; isolate the precipitate to wash, then calcinate at a temperature of 950-1200 ° C, obtain α-type alumina powder, mother liquor Recycling. This method was invented by the Austrian scientist Bayer (K.j. Bayer) in 1888, and the main method of industrial production alumina is still the main method of industrial production alumina today.

Applications of Aluminum Oxide

Aluminum oxide is produced by electric melt high-quality alumina, while high-quality aluminate is used to produce broth jade and white corundum. Their natural crystal structure makes it high, and the cutting performance is fast. At the same time, they are often used as a raw material that is consolidated and applied to abrasion. In addition to this, the industry that uses alumina includes:

Filler

Alumina has considerable chemical inert and white, is an ideal filler of plastics. Alumina is a common ingredient in sunscreen, sometimes in cosmetics, such as blush, lipsticks and nail polish.

Glass

Many glass formulations contain alumina as ingredients. Silicate glass is a common glass type, typically comprising 5% to 10% alumina.

Medical industry

Due to the hardness, biological inertness and chemical properties of alumina, it is a preferred material of the bearing in the hip replacement, as a prosthesis, bionic plants, prosthesis alternatives, tissue enhancers, dental crown, base, bridge and other dental plants Into the object. It is also used in laboratory equipment and tools for stoves and another laboratory.

Military and protective equipment

The strength and light quality of alumina help to enhance body armor, such as boxing, and car and aircraft armor, this is its largest market. Alumina is also used to synthesize sapphire anti-pop-up window and ballistic.

Electrical and electronics industry

With its high melting point and boiling point, in addition to its excellent thermoelectric resistance, alumina can also be produced in the manufacture of high-temperature furnace insulation and electrically insulator. Alumina films are also an important part of the microchip industry. Other uses include spark plug insulators, microelectronic substrates, and insulated radiators.

Gemstone industry

Alumina is a valuable element formed by wine and sapphire. Its crystalline form is a basic element of these precious gems. Ruby owes them to chromium impurities, while sapphires get their variant color from iron and titanium.

Industrial application

Since alumina is chemically inert, it is used as fillers in plastics, bricks and other heavy-duty clay dishes, such as a kiln. Due to its extreme strength and hardness, it is usually used as an abrasive of sandpaper. It is also an economic alternative for industrial diamonds.

Aluminum oxides are also used for producing pipe components such as elbows, serve, straight tubes, water boxes, decelerations, nozzles, and valves. Other applications include producing various machining tools, cutting tools, thermocouples, wear-resistant pump impellers and baffles.

Catalytic

Alumina catalyzes a variety of industrial useful reactions. In its largest application, alumina is a catalyst in a Crawus process for converting hydrogen sulfide exhaust gas into elemental sulfur in a refinery. It can also be used to give alcohol into olefins. Alumina is used as a catalyst vector to many industrial catalysts, such as those use hydrodexusulfurulfurization and some Ziegler-Natta polymerization.

Gas purification

Alumina is widely used to remove water from the airflow.

Bulletproof clothing

Some bulletproof clothing use alumina ceramic plates, usually in combination with aromatic polyamides or UHMWPE backings to achieve the effect of resisting most rifle threats.

Electrical insulation

Aluminum oxide is an electrical insulator, not only as a substrate of an integrated circuit (salad on sapphire) but also as a manufacturing superconducting device.

 Aluminum Oxide Price

Aluminum Oxide Powder price will vary randomly with the production cost, transportation cost, international situation, exchange rate, and market supply and demand of Aluminum Oxide Powder. Tanki New Materials Co.,Ltd Aims to help All industries and Chemical Wholesalers to find high-quality, cheap price Nanomaterials and chemicals by providing turn-key customize manufacturing services. If you are looking for Aluminum Oxide Powder, please feel free to send an inquiry for the latest price of Aluminum Oxide Powder.

 Aluminum Oxide Supplier

As a global Aluminum Oxide supplier, Tanki New Materials Co.,Ltd has rich experiences in the properties, applications, and cost-effective manufacturing of advanced and engineered materials. The company has successfully developed a series of powder materials (including oxides, carbides, nitrides, single metal, etc.), high-purity targets, functional ceramics, and structural devices, OEM service is available.

More information about Aluminum Oxide