Degassing of static melts by insoluble purge gases

Removal of Impurity Elements from Molten Aluminum: A Review

“…Dantzig Model: Assuming the bubble column to be a cylinder with radius b inside a concentric cylindrical melt with radius R, the diffusion equation developed by Dantzig (1980) can be written as…”

“…Eichenauer and Markopoulos (1974) did experiments to measure the diffusion coefficient of hydrogen in molten aluminum. Dantzig, Clumpner, and Tyler (1980) developed a mathematical diffusion model for the aluminum degassing process by purging insoluble gas. Botor (1980aBotor ( , 1980b investigated hydrogen removal by injecting N 2 , Ar, and Cl 2 , and obtained hydrogen mass transfer coefficients based on the penetration theory and the Maxwell diffusion theory (Hobler 1966).…”

A kinetic study of hydrogen absorption and degassing behaviour of Duralcan composites

“…To evaluate degassing efficiency, it is necessary to have a clear understanding of the whole procedure of gas removal, which could be considered consistent with the following successive steps [10,12,23,42]:…”

“…The chemical and kinetic study on the processes of degassing and hydrogen absorption in molten pure aluminum and in some aluminum alloys have been performed by several investigators [9][10][11][12][13][14][15][16]. However, information concerning degassing and hydrogen absorption behaviour in molten DURALCAN™ composites is very limited in published literature.…”