The main components of aluminum alloy refining agents are chloride salts, fluoride salts and other compounds. After proper heat treatment and sieving, the particle size is uniform, which is beneficial for the carrier gas (N2 or under the action of Ar) in the refining tank to uniformly enter the lower layer of molten aluminum through physical and chemical changes.
Molten aluminum forms a large number of small bubbles, which completely contact the molten aluminum to separate liquid aluminum [H] and other harmful gases. Certain substances in aluminum alloy refining agents will strongly absorb and melt oxides and suspended solids in the melt, and stick to the bubbles. As the bubbles rise, they are brought to the surface of the molten aluminum for the purpose of refining, purifying, degassing and removing slag.
Aluminum alloy refining agent is economical and can meet the production of high value-added, high-tech performance aviation, transportation and other aluminum alloy precision castings. Through the physical and chemical changes of the aluminum melt, many small bubbles are formed. These bubbles are in complete contact with the aluminum melt, thereby separating hydrogen and other harmful gases.
At the same time, the adsorbed and molten compounds contained in the refining flux can strongly adsorb and fuse oxides and floats, and adhere to the bubbles, and bring them to the surface of the molten aluminum as the bubbles rise, thereby achieving degassing and slag removal. The goal is purification.
AdTech refined additives are used for purification, which is environmentally friendly and economical. It can meet the requirements of high value-added and high-tech performance aviation, transportation and other aluminum alloy precision casting production, such as computer hard drives, micron aluminum foil raw materials, PS printed skirting, canned products, turbojet fan blade engines, etc.
Molten salts of chlorides and fluorides of alkali metals and alkaline earth metals are used to purify heavily polluted aluminum scraps. The aluminum scraps preheated to 400°-500°C are fed into the molten salt melt and heated to a temperature higher than the melting point of 50°-100°C, the density of which is lower than that of aluminum, and the molten mixture will be heated here Keep in the melting or holding furnace for at least one hour. Then, first pass the aluminum and salt melt through an open-pored ceramic filter that is resistant to both filtrates to separate the aluminum melt precipitated during the holding process from the solid salt melt, and then separate it from the solid impurities.