Aluminum Liquid Degasser

Principle of aluminum liquid degasser:

Dissolved hydrogen will move from high concentration areas in the melt (in the melt) to low concentration areas (in the inert gas).
Hydrogen gas disperses in molten metal as it would if it were released in any confined space. It will maintain a constant concentration throughout the melt. Hydrogen gas can migrate in liquid metal almost as fast as it can in air.

Sources of hydrogen in molten aluminum:

atmosphere humidity
wet metallic charge
wet furnace lining (crucible, transfer ladles)
Wet foundry instruments
wet fluxes and other consumables
furnace fuel combustion products containing hydrogen

Aluminium Liquid Degasser

Therefore, it is unnecessary to bring every ounce of metal in contact with the inert gas. The efficiency of aluminum degassing is
determined by two factors, the transfer rate across the metal/gas interface and the total surface area available for transfer.

Aluminum Liquid Degasser Product Feature：

1. Based on product quality and process requirements, the body structure has an overall lining and an assembly lining.
2. The filtering form has horizontal and plug-in types.
3. Filtering pass has single-stage, two-stage, and three-stage.

In the rotary Aluminum Liquid Degasser method, an inert or chemically inactive gas (Argon, Nitrogen) is purged through a rotating shaft and rotor.

Energy of the rotating shaft causes the formation of a large number of fine bubbles, providing a very high surface area-to-volume ratio.
Large surface area promotes fast and effective diffusion of hydrogen into the gas bubbles, resulting in equalizing the activity of hydrogen in
liquid and gaseous phases.

The difference between flux degassing and aluminum liquid degassing machine：

The Aluminum Liquid Degasser allows for more complete hydrogen removal compared to flux degassing.
Additionally, the rotary degasser does not use harmful chlorine- and fluorine-containing salts. The Aluminum Liquid Degasser may also combine the functions of degassing and flux introduction. In this case, the inert gas serves as a carrier for the granulated flux.