The present application belongs to the technical field of
mineral processing and
environmental protection, and particularly relates to a method for removing
impurity metal ions and compounds in
raffinate acid. The
impurity metal ions and compounds such as iron,
magnesium and aluminum in the
raffinate acid are selectively removed under the synergistic action of adsorption materials and flotation reagents. The method mainly uses the strong adsorption of the adsorption materials and the strong selectivity of the specific flotation reagents, and uses the adsorption materials and the flotation reagents in combination, and through adjusting and controlling the types, the ratio, the dosage of the adsorption materials and the flotation reagents, and the
reaction sequence, the time and the temperature, the selective removal of the
impurity metal ions and compounds in the
raffinate acid is realized, and the comprehensive
utilization rate of the raffinate acid is improved. The method is suitable for the purification
system of the raffinate acid in the
phosphorus chemical industry, and has the advantages of simple method, strong selectivity, remarkable effect and short action time, and has important significance for solving the problems of difficult disposal and reuse of the raffinate acid, high production cost of the
phosphorus chemical industry and serious waste of
phosphorus resources.