The dissolution kinetics of ulexite in sulphuric acid solutions

Tunc M. , YAPICI S., KOCAKERIM M., YARTASI A.

CHEMICAL AND BIOCHEMICAL ENGINEERING QUARTERLY, vol.15, no.4, pp.175-180, 2001 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 15 Issue: 4
  • Publication Date: 2001
  • Title of Journal : CHEMICAL AND BIOCHEMICAL ENGINEERING QUARTERLY
  • Page Numbers: pp.175-180

Abstract

This technical note presents an investigation on the dissolution kinetics of ulexite, a boron mineral, in H2SO4 solutions as a function of particle diameter, mass concentration, stirring speed, acid concentration, and reaction temperature. It was determined that the dissolution rate increased with increasing reaction temperature and decreasing particle diameter, mass concentration and acid concentration, while no important effect of stirring speed was observed. Ulexite could be dissolved up to 100 percent in the sulphuric acid solutions. The following overall reaction was suggested for the process