Use of graphite impellers for aluminum degassing

One of the most important processes of refining aluminum alloys is degassing - the extraction of hydrogen which creates internal defects and porosity.
The degassing is achieved by blowing and saturating the aluminum melt with an inert gas (the most often, argon or chlorine), which comes to the surface reacting with hydrogen.

Consumable tools for degassing are graphite impellers. Plunging into the aluminum melt, they create a channel for supplying inert gas to the depth of the ladle and, with the help of a rotating rotor, distribute gas bubbles throughout its volume.

EuroGraphite products - high-quality graphite impellers are provided with the following characteristics:

- Increased resistance to thermochemical stresses is achieved by using special types of graphite and the technology of vacuum impregnation of parts with antioxidants;
- The design of the impellers and the parameters of their rotation create the necessary structure of gas bubbles that enter into diffusion with hydrogen, turbulence, circulation, depending on the requirements of the technological process.
Дегазация алюминия

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Products of EuroGraphite

Graphite stators and shafts

Parts are impregnated with antioxidants using vacuum technology throughout the depth;
Overall processing parameters Ф900x3500 mm;
Ideal axiality of the shafts, no runout;
The end element of the connecting unit is greed with the customer, possibly complete with sealing elements.

Graphite rotors

Selection of the rotor is carried out depending on the specifics of the technological process;
The distribution of gas is carried out throughout the bucket;
Management of the movement of the medium of the melt by adjusting the geometry of the rotor;
Impregnation with antioxidants to increase the service life.

Запатентованные импеллеры

Impeller F2
Provides excellent mixing of molten metal with inert gas throughout the volume of the ladle
Impeller F2A
Improved F2 impeller design for increased turbulence
Impeller J8
An effective solution where degassing does not require strong eddies and flows
Impeller G1
Used for continuous degassing, works effectively when changing directions of rotation

Contacts

GDI Technology s.r.o.
 
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