Hydrometallurgical processing of nontronite type lateritic nickel ores by MHP process

► First stage iron purification of the PLS conducted at pH 2.50, 90 °C and 2 h. ► Second stage iron purification of the PLS conducted at pH 4.25, 70 °C and 1 h. ► Optimum conditions of MHP1 determined as pH 7.00, 50 °C and 1 h. ► Optimum conditions of MHP2 determined as pH 7.50, 50 °C and 3 h. ► Manganese Removal conducted at pH 8.50, 50 °C and 1 h.