Study on the process of separating aluminum ions from phosphoric acid waste solution containing aluminum by solvent extraction method
A solvent extraction method has been developed to remove aluminum ions from phosphoric acid etching waste solution which contains a large amount of aluminum ions,and the extraction process conditions have been optimized.Under the conditions of using P-15 extractant,sulfonated kerosene and P-15 extractant in a mass ratio of 2,extraction ratio of 4,extraction temperature of 60 ℃,and time of 30 min,a five stage cross flow extraction is carried out,and the extraction rate of aluminum ions can reach 58.68％,greatly improving the value of phosphoric acid waste solution and providing feasibility for the purification,recovery and high-value utilization of phosphoric acid waste solution in the future.
solvent extraction methodphosphoric acid waste solution containing aluminumaluminum ion separation
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