
%0 Journal Article
%A Welham, Nicholas J. 
%T Mechanochemical Reaction Between Sulfur and Ilmenite
%J Australian Journal of Chemistry
%D 1998/10/07
%V 51
%N 10
%P 947-954
%K 
%R https://doi.org/10.1071/C98081
%U https://www.publish.csiro.au/paper/C98081 
%X An ilmenite (FeTiO3) concentrate has been milled with sulfur in a laboratory-scale ball mill for 100 h under a variety of conditions. X-Ray diffraction and thermal processing have shown that reaction occurs within the mill forming pyrite (FeS2) and rutile (TiO2). The reaction was of greatest extent in a mill run under 400 kPa of inert gas; some reaction occurred in a mill under 10-2 Pa, whereas little reaction was observed when either water or air was present. Annealing of the product powders showed that reaction to TiO2 and FeS2 could be achieved in a closed system after 1 h at 400C but with the evolution of SO2, whereas annealing at 800C also gave TiO2 and FeS2, but without formation of SO2 which was thought to have disproportionated to form iron sulfate(VI). Closed-tube annealing of unmilled sulfur and milled ilmenite showed the same reactions as milled powders but of much greater extent. 
