Molten Aluminium Deslagging Agent mainly reacts between the flux and the melt. The reduced viscosity of the melt makes the oxidized inclusions easy to precipitate and float. Some components in the flux can react with aluminum, and the generated gas can also play a role in degassing.
The powder spraying refining device (also known as the powder spraying machine) uses airflow (usually nitrogen) to evenly spray the flux powder into the melt.
Add Deslagging Agent to the material box. When the motor drives the screw to rotate, the flux powder is pushed into the mixing chamber, and then the flux is mixed with nitrogen and brought into the melt along with the nitrogen flow.
Changing the motor speed or changing the nitrogen pressure can change the spray rate of the flux.
The powder spraying refining device has simple structure and low cost, so it has been popularized.
In order to improve the refining effect, we must pay attention to the quality of Molten Aluminium Deslagging Agent and carrier gas.
The flux is usually susceptible to moisture, so the flux powder should be placed in a dry place and sealed for storage.
Nitrogen (preferably argon) should be of high purity (purity is preferably 99.99%). The lower the oxygen and water content, the more significant the degassing effect.
In addition to solvent refining, on-line degassing is the key research and development target of aluminum enterprises’ melting and casting production.
The AdTech on-line degassing device is equipped with a graphite rotor in the reaction chamber. The gas passes through the nozzle to form dispersed fine bubbles. At the same time, the melt is stirred with the rotation to make the bubbles evenly dispersed in the entire melt. Produce exhaust gas and slag removal effect.
Aluminum alloy purification adopts smelting furnace refining agent powder spraying refining and online degassing filtration system.
The online degassing system adopts dual-rotor gas refining technology. The dual-rotor gas refining device has high efficiency in removing gases and inclusions in the aluminum melt, can achieve a satisfactory hydrogen removal effect, and ensure the inside of the ingot quality.
The ceramic foam filter system adopts single-layer and two-stage filtration according to the aluminum liquid throughput of the casting platform. In production, the existing round rod production line is changed to double-layer two-stage filtration according to customer requirements to meet the filtration requirements of high-end customers.