FREMGANGSMAATE FOR BEHANDLING AV SMELTET ALUMINIUM FOR FJERNELSE AV HYDROGENGASS OG IKKE-METALLISKE INNESLUTNINGER.

摘要

Hydrogen gas and nonmetallic inclusions are removed from molten aluminum by a method comprising applying over the surface of molten aluminum in a container a mixture of at least one compound selected from the group consisting of boron oxides, boric acids and boric acid compounds and a flux comprising a halgen salt, introducing a treating gas into the molten aluminum, and removing the hydrogen gas-containing treating gas and nonmetallic inclusions rising to the surface of the molten aluminum.