Optimization alkaline leaching of silicon element from bauxite ore

Abstract

This research examines the effect of alkaline leaching on the recovery of silicon element from the Iraqi Bauxite Ore. The factors studied were NaOH concentration, particle size, and stirring speed using the program MINITAB 16. NaOH concentration (X1) (1,2, and 4M), particle size (X2) (53,75,and 150µm), and stirring speed (X3) (250,500, and 750 rpm). The best recovery percentage was found to be (94.1097) when the variables were (X2= 53M), (X1 = 4M), and (X3=750 rpm). The factors NaOH concentration (X1), particle size (X2), and stirring speed (X3) all have a substantial impact on the process of recovery, according to the results. However, NaOH Concentration (X1) and Particle’s size (X2) have a more significant effect compared with the stirring speed (X3) on the recovery process.