Technology for purifying iron ions from wet process phosphoric acid

The invention discloses a technology for purifying iron ions from wet process phosphoric acid, and belongs to the field of phosphorus chemical industry. According to the technology, medicaments and iron ions in diluted phosphoric acid are combined to generate an indissolvable compound, and the indissolvable compound is precipitated, so that the purpose of wet process phosphoric acid purification is achieved, and the requirement for producing high-concentration phosphate fertilizer, water-soluble fertilizer and other products is met. The method has the advantages that the iron ions purified from the wet process phosphoric acid through the method are stable, the reaction conditions are simple, the technological process is short, the medicament source is wide, the treatment cost is low and the P2O5 recycling rate is high. After treatment, the wet process iron phosphate removal rate reaches 93% or above, and the P2O5 recycling rate is higher than 99%. 本发明公开了种净化湿法磷酸中铁离子的技术，属于磷化工领域。该技术是利用药剂与稀磷酸中铁离子结合生成难溶化合物，并沉淀下来，从