Abstract:Iron removal is the primary process to recover gallium from Bayer red mud through acidic-leaching-ion-exchange technology. LSD396 resin was employed to adsorb iron from acidic leaching solution. Effects of resin dosage, temperature, and duration on iron removal were investigated, and desorption behavior of loaded resin was explored. The results show that iron removal rate is 99% above with loss of Ga of 1.29% under the conditions of 45 ℃, resin dosage of 0.6 g/mL, and 120 min, which indicates that LSD396 resin exhibits an excellent selectivity for iron in strong HCl solution. Desorption efficiency is 92% above under the conditions of 45 ℃ and 5 BV either with 0.05 mol/L HCl solution or deionized water as eluant. Deionized water is selected as eluant due to its low cost and being environmental friendly.