The granular refining flux is a granular flux, which is prepared by mixing a variety of inorganic salts after drying treatment in a certain proportion. It is mainly used to remove hydrogen and floating oxidized slag in the aluminum liquid.
The granular refining flux is mainly used to remove the hydrogen and floating oxidized slag in the aluminum liquid, so that the aluminum liquid is more pure, and it also has the function of a slag cleaning agent.
Part of the components in the granular refining flux are easily decomposed at high temperatures, and the generated gas is easy to react with hydrogen, and has a strong adsorption force with slag inclusions, and quickly escapes from the melt. Other components also have the function of slag cleaning agent.
The granular refining flux is suitable for degassing, refining and slag removal of commonly used aluminum alloys (alloys with high magnesium content and aluminum-magnesium alloys cannot be used) and pure aluminum smelting.
The granular refining flux is sprinkled on the liquid surface and quickly pressed into the aluminum liquid, and then it is fully stirred and then left to stand to remove the slag. For example, with the help of a jet machine, it is better to spray the refining agent into the aluminum liquid with inert gas.
Generally, the amount of granular refining flux is about 0.3% of the weight of the molten aluminum, depending on the purity of the molten aluminum.