Effect of mechanical activation on manganese extraction from manganese carbonate ore in acidic media

Yilmaz V. M., APAYDIN F.

Indian Journal of Chemical Technology, vol.21, no.3, pp.215-219, 2014 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 21 Issue: 3
  • Publication Date: 2014
  • Journal Name: Indian Journal of Chemical Technology
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.215-219
  • Keywords: Acidic leaching, Manganese carbonate ore, Manganese extraction, Mechanical activation
  • Bilecik Şeyh Edebali University Affiliated: No

Abstract

A manganese carbonate ore has been mechanically activated at different milling times and the effect of mechanical activation on the ore structure is analyzed by X-ray diffraction, scanning electron microscopy and particle size analysis. The activation procedure leads to amorphisation and structural disordering of the ore structure. Sulfuric acid leaching of the non-activated and activated manganese carbonate ore has been studied at different temperatures, durations, and acid concentrations. The results show that dissolution of manganese increases from 69% to 100% in acidic leaching with 1 M H2SO4 at 70°C after 30 min of mechanical activation, due to amorphisation in structure and creating more surface area.