Comparison of the advantages and defects of three kinds of rare atomized aluminum powders

Aluminum powder, commonly known as "silver powder", its wide use, large demand, variety, is a big category of metal pigments. There are many kinds of aluminum powder consumption process, including ball milling, atomization, impact crushing, etc. According to different preparation process, aluminum powder can be divided into ball milling aluminum powder, atomized aluminum powder and aluminum chip powder, etc. Today, three brothers metal mainly introduces several ways of atomization of aluminum powder consumption process. Due to the different atomization medium, atomization method is divided into air atomization method, nitrogen atomization method and water atomization method. Then, we will analyze the similarities and differences of the three atomization methods in detail.

First, air atomization

Advantages: large consumption ability, low cost, complex equipment.

Defects: poor consumption safety, insufficient purity of aluminum powder, no method to produce spherical aluminum powder.

Two, nitrogen atomization

Advantages: safe consumption process, less oxidation of finished products, high quality, spherical powder, high application value.

Defects: high air tightness requirements, nitrogen requirements, high cost.

Three, water atomization

Advantages: low cost of consumption, droplet cooling speed, high efficiency, aluminum oxidation reaction is controllable.

Defects: poor safety for consumption, risk of hydrogen explosion, irregular shape of aluminum powder.

The key difference between the three ways of atomizing aluminum powder is still due to the different atomizing medium, which causes the different granular shape and cooling rate, and then leads to the quality difference of aluminum powder. In the long run, nitrogen atomization will gradually replace the higher risk of air atomization, and with the further study of aluminum water reaction inhibitors, the industrial consumption of water atomized aluminum powder will also have a foreseeable space.