Method using catalytic oxidation of sulfur dioxide tail gas for PH adjustment agent of phosphate rock ore dressing

The invention discloses a method using catalytic oxidation of sulfur dioxide tail gas for a PH adjustment agent of phosphate rock ore dressing. According to the method, soluble iron (III), germanium (IV) and other metal ions in raw phosphate rock pulp are used as catalysts, copper (II) ions play a synergistic effect, a trace buffer is added; countercurrent contact, in a dynamic wave desulphurization tower, with the sulfur dioxide tail gas out from an absorption tower is realized, and after sulfur dioxide is absorbed, a sulfuric acid solution is formed for decomposition of the phosphate rock pulp; phosphoric acid formed by the decomposition of the phosphate rock pulp can be used as the PH adjustment agent in phosphate rock ore flotation selection, and a mineralization coupling technology of phosphorus chemical industry and phosphate rock ore dressing can be achieved. The tail gas processed by desulphurization can reach an emission standard of less than or equal to 400mg/m of tail gas of the new national standa