A REVIEW OF THE EXTRACTIVE METALLURGY OF NIOBIUM.

Download or read book A REVIEW OF THE EXTRACTIVE METALLURGY OF NIOBIUM. written by and published by . This book was released on 1950 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: BS>The preparation of niobium was attempted by a number of chemical and electrochemical routes. Chemical reduction of oxides and halides such as Nb/sub 2/O5, K2NbOF5, K2NbF--, and NbCl5 was conducted with varying degrees of success. Aqueous electrochemical reduction has not yet yielded a metallic deposit. The electrolysis of molten baths containing K2NbOF5 or K2NbF-- produced niobium metal. The more promising methods of preparation for Nb metal at the present time include the reaction of Nb2O5 with C, the H2 and active metal reduction of NbC15, and electrolysis of K2NbF--- NaC1 melts. (auth).