Granular aluminum is a fine-grained substance obtained by spraying a melt of primary aluminum. Aluminum is the most common metal, easily lends itself to various types of machining, it is strong enough, flexible and ductile.
Granular aluminum has a silvery-white color. The shape of the granules and the particle size distribution can differ significantly. These are usually spherical and cylindrical particles <2 mm in size. The surface of the granules is covered with a passivated oxide film.
The melting point of the metal is 660 ° C, the boiling point is 2519 ° C. Amphoteric, that is, it can interact with both some acids and alkalis. When reacting with dilute acids, aluminum salts are formed, with active alkaline solutions - aluminates.
Granular aluminum has such properties as:
- corrosion resistance and non-aggressive media;
- high strength and rigidity, allows to withstand significant loads with low weight;
- flexibility and plasticity, this makes it possible to simplify the installation process.
Aluminum granules are widely used in chemistry, metallurgy, energy, construction, aviation, industry, instrument making, and pyrotechnics. Granules are used to deoxidize steels, create rocket fuels, and laboratory preparations.
Granular aluminum is used:
- in mechanical engineering;
- in industrial and civil construction;
- in the aviation industry and shipbuilding.