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Aluminum powder, commonly known as "silver powder." Silver metallic pigments. Chemical Formula: AL. To pure aluminum foil by adding a small amount of lubricant, crushed by the pounded squamous powder, and then polished.

Uses

Light weight, high floating force, strong hiding power, good reflectivity to light and heat. After treatment, can also be non-floating aluminum powder. Aluminum powder can also be used to identify fingerprints. Can also do fireworks!

Aluminum powder because of wide use, demand for large, more varieties (such as spherical aluminum powder), it is a major category of metal pigments. Pigment aluminum powder particles are scaly, it is precisely because of this scaly shape of the particle state, aluminum powder has a metallic color and shielding function. Industrial production of metal aluminum powder a long time ago, the early production method is to pound the red method, the aluminum debris on the groove of the pounding machine, pestle in the machinery driven by continuous punching aluminum groove within the groove, with The ductile aluminum gradually becomes thin and crushed under impact, and after the aluminum becomes very minute and fine, it is screened and the desired aluminum powder is taken out as the product. Dao Chong method of production efficiency is very low, the product quality is not easy to master, and the production process a lot of dust, very easy to fire and explosion. In 1894, Hamtag produced ball mill aluminum powder, the ball into the ball in the ball, aluminum chips and lubricants, the use of flying steel ball crushed aluminum scrap after the scaly aluminum powder, in the ball mill and pipe filled with inert Gas, this method is still used, is called "dry production." In 1910, the United States J.Hall invented in the ball mill by adding petroleum solvent instead of inert gas, the production of aluminum powder and solvent mixed into a paste, a slurry of aluminum pigment. This method is simple equipment, process safety, product use is very convenient, and soon adopted by countries in the world. Most of the modern aluminum pigment used in this method, this method is also known as the "wet."

Development of China Aluminum Powder Industry

China's aluminum powder industry since the 20th century, 50 years started, has been 50 years of history. Atomized aluminum atomized air atomization method are used, pressure water atomization method has begun to enter the production sequence, the product both irregular shape, there are spherical. In the ball mill manufacturing aluminum and aluminum paste, the dry process and wet process are used by manufacturers. Production of products are floating aluminum and aluminum powder slurry, non-floating aluminum powder and aluminum paste. Suitable for water-based coating of water-dispersed aluminum paste has long been available to the form of aluminum alloy slurry, such as zinc-aluminum paste is also produced.