Production of SrCO3 and (NH4)(2)SO4 by the dry mechanochemical processing of celestite


Bingöl D., Aydogan S., Bozbas S.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, vol.18, no.2, pp.834-838, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 18 Issue: 2
  • Publication Date: 2012
  • Doi Number: 10.1016/j.jiec.2011.11.145
  • Journal Name: JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.834-838
  • Keywords: Chemical processes, Ion exchange, Leaching, Optimization, Conversion, Celestite, ALKALINE HYDROTHERMAL CONDITIONS, SODIUM-CARBONATE SOLUTION, MINERAL CELESTITE, CONVERSION, PRECIPITATION, STRONTIANITE, SRSO4, WATER
  • Kocaeli University Affiliated: Yes

Abstract

A SrCO3 formation starting from activated SrSO4-(NH4)(2)CO3 mixtures as a result of dry mechanochemical treatment for 180 min in a planetary ball mill of celestite together with (NH4)(2)CO3 was studied. The phases that formed during milling were successfully characterized by X-ray diffraction measurement (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and chemical analysis. A novel hydrometallurgical process to convert both SrCO3 (product) and (NH4)(2)SO4 (by-product) from celestite via dry mechanochemical conversion with (NH4)(2)CO3 was developed for the first time in this work. Under optimum conditions, the conversion of SrCO3 was 98.1%. The (NH4)(2)SO4 leach solution was crystallized. (C) 2011 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.