Metalurgija, Vol. 62 No. 1, 2023.
Prethodno priopćenje
Behavior of copper chalcogenides during vacuum-thermal processing
A. Nitsenko
orcid.org/0000-0001-6753-0936
; Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan
V. Volodin
; Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan
X. Linnik
orcid.org/0000-0002-0683-1409
; Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan
N. Burabaeva
; Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan
F. Tuleutay
; Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan
Sažetak
In this work, thermodynamic functions of evaporation of copper chalcogenides (Cu2S, Cu2Se, and Cu2Te) are determined via previously published data and thermodynamic values obtained by the authors of the work. The obtained results indicate a very low probability of separation of compounds into copper and chalcogen by dissociation under vacuum-thermal processing conditions. Liquid-vapor phase transitions in binary systems Cu2S – Cu2Se, Cu2S – Cu2Te, and Cu2Se – Cu2Te at low pressures of 15 and 0,7 kPa are constructed based on the vapor pressure of copper chalcogenides. It is shown that the pressure eases over the liquid bath impairs the separation of chalcogens, therefore separation in one stage by thermo-vacuum treatment at a pressure of 0,7 – 15 kPa is not possible.
Ključne riječi
copper chalcogenides; vacuum; thermal processing; dissociation; vapor pressure
Hrčak ID:
281409
URI
Datum izdavanja:
1.1.2023.
Posjeta: 1.006 *