Leaching of nickel from Pomala's reduced limonitic laterite using sulphuric acid.

In present work, the experiment to extract nickel from Pomala's reduced Limonitic Laterite nickel using aqueous sulphuric acid solutions has been done in laboratory scale experiment. The objective of experiment to investigate effect of temperature, sulfuric acid concentration, leaching time and oxygen addition on nickel extraction from Pomala's reduced Limonitic laterite nickel. The variable for experiment covering temperature from 60^oC to 90^oC, sulfuric acid concentration from 0.2 M to 1.0 M, leaching time from 60 minutes to 240 minutes and oxygen addition. The effect of those variables was observed to the nickel extraction process from Pomala's reduced limonitic laterite nickel. The result of experiment shows 97.45 % of nickel was extracted from Pomala's reduced Limonitic Laterite nickel by 1.0 M aqueous sulphuric acid solutions at temperature of 70^oC. [ABSTRACT FROM AUTHOR]