Investigation and characterization of high purity and nano-sized SrCO3 production by mechanochemical synthesis process

İÇİN K., ÖZTÜRK S., SÜNBÜL S. E.

CERAMICS INTERNATIONAL, vol.47, no.23, pp.33897-33911, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 47 Issue: 23
  • Publication Date: 2021
  • Doi Number: 10.1016/j.ceramint.2021.08.302
  • Journal Name: CERAMICS INTERNATIONAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.33897-33911
  • Keywords: Celestite ore, Strontium carbonate, Mechanochemical synthesis, THERMAL-DECOMPOSITION, CELESTITE, CONVERSION, KINETICS, CARBONATE, SRSO4, PRECIPITATION, OPTIMIZATION, (NH4)(2)SO4, MECHANISM
  • Karadeniz Technical University Affiliated: Yes

Abstract

In this study, the production of strontium carbonate (SrCO3) from concentrated celestite ore (SrSO4) by mechanochemical synthesis process was investigated. Different proportions of ammonium carbonate ((NH4)(2)CO3) were used to convert the celestite ore to strontium carbonate. The effects of SrSO4: (NH4)(2)CO3 stoichiometric ratio and synthesis time on the purity of the produced strontium carbonate were examined. In the mechanochemical synthesis experiments, the stoichiometric ratios of 1:1, 1:1.5 and, 1:2 between SrSO4 and (NH4)(2)CO3, and synthesis times of 10, 100, and 200 min were applied. Impurities and contaminations in concentrated celestite ore were removed by acid leaching and calcination processes. DTA, TGA, XRD, SEM, EDX, TEM, and FT-IR analyzes were performed throughout the strontium carbonate production process. Experimental studies have revealed that the 1:2 stoichiometric ratio between SrSO4 and (NH4)(2)CO3 and 200 min synthesis time are the most suitable process parameters for the production of high purity strontium carbonate.