Phase evolution of tin oxides roasted under CO-CO2 atmospheres in the presence of Na2CO3

Release time:2016-07-05

Affiliation of Author(s):Central South University

Journal:Miner. Process. Extr. Metall. Rev.

Key Words:CO–CO2 atmosphere;Na2SnO3; phase evolution;roasting; tin oxides

Abstract:High-purity Na2SnO3 has been prepared by a novel process of roasting SnO2 and Na2CO3 in a solid state under CO–CO2 mixed gas. In the current study, the phase evolution of tin oxides and Na2CO3 roasted under various CO–CO2 atmospheres was investigated by chemical and X-ray diffraction analysis. Under the CO content of 5–20 vol% and temperature over 800°C, Na2CO3 can react with SnO2 and the intermediate products of SnO and Sn to form Na2SnO3. SnO would be decomposed into SnO2 and Sn at temperatures below 800°C; however, the decomposition reaction was effectively restrained by Na2CO3 over 800°C.

Indexed by:Unit Twenty Basic Research

Discipline:冶金工程学

Document Type:J

ISSN No.:0882-7508 (Print) 1547-7401 (Online)

Translation or Not:no

Date of Publication:2016-05-23

Links to published journals:http://dx.doi.org/10.1080/08827508.2016.1190355