NIOBIUM RECYCLING FROM THE INDUSTRIAL WASTES

  • L.V. Lyashok National Technical University «Kharkov Polytechnic Institute», Kharkiv
  • A.Yu. Brovin National Technical University «Kharkov Polytechnic Institute», Kharkiv
  • K.N. Tashlykovych National Technical University «Kharkov Polytechnic Institute», Kharkiv
Keywords: niobium, recycling, industrial wastes treatment, refining, ionic melt, electrochemical coating

Abstract

Recycling technologies of the wastes containing niobium with using various methods are considered. Advantages of the hydrometallurgical method of industrial wastes treatment are shown. Thermodynamic characteristics of the leaching process are calculated. The process parameters of niobium compound dissolution are determined. Some methods of production of metallic niobium powder of various dispersions are proposed. Niobium refining processes using oxygen-free ionic melts, which allow extraction of niobium powder or compact electrochemical niobium coatings, are investigated. The influence of current density, temperature and electrolyte components concentration on a current efficiency and characteristics of coatings are established. Increasing of current density and coating thickness, respectively, leads to the deposition of macrocrystalline coatings. Niobium deposition on copper leads to deposition of coatings with a slight interdiffusion. The proposed niobium refining methods allow receiving high purity metal in a compact or powder form. Bibl. 5, Fig. 2, Tab. 1.

Author Biographies

L.V. Lyashok, National Technical University «Kharkov Polytechnic Institute», Kharkiv

Candidate of Technical Sciences, Professor

A.Yu. Brovin, National Technical University «Kharkov Polytechnic Institute», Kharkiv

Candidate of Technical Sciences

References

Korovin S.S., Drobot D.V., Fedorov P.I. [Rare and dispelled elements. Himija i tehnologija], Moscow : Moskovskij institut stali i splavov, 1999, 461 p. (Rus).

Bajrachnij B.І., Ljashok L.V. [Rare and dispelled elements. The Technology of Production and Use], Kharkov : Nacional’nyj tehnicheskij universitet «Har’kovskij politehnicheskij institut», 2007, 288 p. (Ukr).

Savickij E.M., Burhalov G.S. [Refractory metals and their alloys], Moscow : Metallurgija, 1986, 331 p. (Rus). 4. Lidin R.A., Molochko V.A., Andreeva L.L. [Chemical properties of mineral substances], Moscow: Himija, 2000, 480 p (Rus).

Zelikman A.N. [Metallurgy of refractory rare metals], Moscow : Metallurgija, 1986, 440 p. (Rus).

Published
2016-12-20
How to Cite
Lyashok, L., Brovin, A., & Tashlykovych, K. (2016). NIOBIUM RECYCLING FROM THE INDUSTRIAL WASTES. Energy Technologies & Resource Saving, (4), 39-43. Retrieved from https://etars-journal.org/index.php/journal/article/view/207
Section
Waste treatment and recycling