CHARACTERISTICS OF COREDUCTION OF NICKEL AND MOLYBDENUM FROM OXIDE SYSTEMS

Citation
Mp. Savyak et al., CHARACTERISTICS OF COREDUCTION OF NICKEL AND MOLYBDENUM FROM OXIDE SYSTEMS, Powder metallurgy and metal ceramics, 34(5-6), 1995, pp. 272-275
Citations number
6
Categorie Soggetti
Material Science, Ceramics","Metallurgy & Metallurigical Engineering
ISSN journal
10681302
Volume
34
Issue
5-6
Year of publication
1995
Pages
272 - 275
Database
ISI
SICI code
1068-1302(1995)34:5-6<272:COCONA>2.0.ZU;2-3
Abstract
We have studied the kinetic characteristics of reduction of nickel and molybdenum from their oxide mixtures. We have monitored the developme nt of the specific surface area during reduction. We calculate the nuc leation rate and the apparent activation energy. The reduction tempera ture for molybdenum in the presence of nickel was shown to decrease ap preciably; and unlike the conventional scheme, in which during the fir st reduction stage MoO3 transforms into MoO2 or molybdenum suboxide, m etallic molybdenum appears. Such reduction conditions made it possible to produce fine (S-sp = 20 m(2)/g) powder of the nickel-based solid s olution and pure molybdenum from the oxide mixtures precipitated from the salt solutions at 650 degrees C.