Upgrading of TiO2 separated from ilmenite mineral, rosetta, black sands of Egypt

Abstract EN

The leaching of ilmenite paste (resulting from ilmenite treatment by KOH) using sulphuric or hydrochloric acids has been studied.

Factors affecting the leaching of TiO2 was investigated such as, acid concentrations (M), S/ L ratio, leaching time and temperature.

Optimum results for sulphuric acid leaching of TiO2 were 10M H2SO4 acid, S/ L ratio 1:10 and 180 min.

of leaching time at 120º C.

However, 6 M HCl acid, S/ L ratio of 1:6 and 120 min.

of leaching time at 80º C were the best conditions for leaching of ilmenite paste.

After leaching factors were studied on ilmenite paste, the mixture was filtered then divided into two parts; the first part (filterate) and second part (residue formation Ti cake).

The obtained products showed 95.55 % TiO2 when using 6M HCl and 92.19% TiO2 present when using 10M H2SO4.