<報文>Nb-Ti スクラップリサイクルの工業化試験 (I) : Nb-Ti スクラップの塩素化物精製試験

概要

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An industrial plant for the recycling of the Ni-Ti alloy scrap was proposed and constructed. The proposed plant which produces high purity UFP (Nb)_2O_5 consists of chlorination, distillation, hydrogen reduction, alkoxidation and hydrolysis processes. A Nb(Cl)_5-Ti(Cl)_4 mixture was obtained by the operation of chlorination plant of Nb-Ti alloy at 300℃. The content of Ti(Cl)_4 in the Nb(Cl)_5 was decreased less than 15ppm by the distillations of Nb(Cl)_5-Ti(Cl)_4 at 136 and 204℃. The hydrogen reduction process in which (Nb)_3(Cl)_8 was formed from Nb(Cl)_5 was effective for the production of 4N grade Nb(Cl)_5 containing trace amount of tantalum.niobiumtitaniumsuperconductorscrapchlorinationalkoxidationrecyclingplant operationhydrogen reduction
東北大学の論文
1994-03-30