用离子交换树脂从粉煤灰盐酸浸出液中除铁试验研究

摘要

研究了从粉煤灰盐酸浸出液中除F e3＋，考察了3种离子交换树脂在不同条件下吸附F e3＋的能力。试验结果表明，用D201型强碱性阴离子交换树脂（Cl型），以硫代硫酸钠作还原剂，EDT A作络合剂，结合还原络合法吸附除Fe3＋，浸出液中Fe3＋质量浓度可降至0．5 g/L以下。%Removal of Fe3+ in acidic leaching solution of fly ash was studied using ion-exchange resins . T hree kinds of ion-exchange resins have different adsorption capacity for Fe3+ in the acidic leaching solution of fly ash .T he results show that using D201 strong basic anion exchange resin to adsorb Fe3+ ,using sodium thiosulfate as reducer and EDTA as complexing agent ,Fe3+ mass concentration in leaching solution can be reduced to low er 0 .5 g/L .