Bioleaching of spent catalyst were carried out using Acidithiobacillus type of microorganisms. Various leaching parameters like contact time, Fe(II) concentration, particle size, pulp densities, pH and temperature were ...

The extraction of aluminium from coal fly ash (CFA) is an important industrial process and has produced commercial interest. However, the leaching kinetics of aluminium has received little attention. This work, therefore, ...

This paper presents the main kinetic parameters for aluminothermic reduction of MnO2 and Fe2O3. Aluminothermic reduction which in fact is a redox reaction requires an initial input of heat which is obtained through external ...

Kinetics of the carbochlorination of Cr(2)O(3) has been studied with Cl(2) + CO gas mixtures between 500 degrees C to 900 degrees C using thermogravimetric analysis. The apparent activation energy is about 100 kJ/mol. ...

The selective chloridization of nickel in a lateritic iron ore by gaseous HCl is based on the principle of relative thermal stability of iron and nickel chlorides. This aspect has been discussed with differential thermal ...

Extraction of copper using LIX64N-kerosene SLM was studied. Membrane diffusion constant for the copper-LIX64N complex was determined to be 3.35x10-11 m2s-1 from the dialysis experiment. The parameters studied for determination ...

Dissolution of nichrome in sulphuric acid has been studied with and without the addition of sodium sulphate. Both nickel and chromium dissolved non-selectively and their dissolution was found to follow the shrinking core ...