Wet-process phosphoric acid filtering process

The invention belongs to the field of phosphoric acid production, particularly relates to a wet-process phosphoric acid filtering process, and aims to solve the problems of low filtering efficiency and easy accumulation of solid raw materials in the prior art, and the wet-process phosphoric acid filtering process comprises the following steps: S1, reacting phosphate ore with sulfuric acid in a reaction kettle to generate dilute phosphoric acid; S2, precipitating and clarifying the dilute phosphoric acid through a settling tank, and carrying out solid-liquid separation to obtain slurry; S3, conveying the slurry to a filter tank through a slurry conveying pump; S4, rapidly filtering the slurry by a filtering mechanism and an anti-accumulation mechanism in the filtering tank; S5, forming an organic phase by a filtered product and an extracting agent; S6, pumping the organic phase to a washing tower for washing and then sending the washed organic phase to a reverse extraction tower; and S7, reversely extracting p