Visualization of the Fe(OH)_3(H_2SO_4)-Na_2SO_3-H_2O System and the Mechanism of Sulfite Conversion of Iron(III)Hydroxide

摘要

Iron(III)hydroxide is an amorphous product isolated upon removal of iron from acidic solutions by increasing their pH.The mother liquor of this product contains impurity components,for example,non-ferrous metal ions irremovable by both alkali and acidic treatment or multiple aqueous repulping [1].Adequate recovery of iron(III)hydroxide is important for many processes,including nonferrous metallurgy.