FOERFARANDE FOER FRAMSTAELLNING AV DUBBELOXALAT AV SAELLSYNTA JORDARTSMETALLER OCH AMMONIUM OCH DERAS ANVAENDNING FOER FRAMSTAELLNING AV OXIDER AV SAELLSYNTA JORDARTSMETALLER.

摘要

Process for the manufacture of an ammonium rare-earth oxalate consisting in mixing, in an aqueous medium, compounds capable of releasing oxalate ions with a salt of soluble rare earths and an ammonium salt such as ammonium nitrate. The precipitate is then isolated and washed. The double oxalate obtained is converted into yttrium oxide by calcining.