Study on Solubility of Phosphogypsum Solid Waste in Hydrochloric Acid
Phosphogypsum is a solid waste produced during the production process of wet process phosphoric acid,characterized by high yield,high impurity content,and difficulty in treatment.In the experiment,hydrochloric acid was used as solvent,single factor experiment and orthogonal experiment design were used to explore the effects of solid-liquid ratio,dissolution temperature,acid concentration and other factors on the acid solubility of industrial waste phosphogypsum in hydrochloric acid.Through orthogonal test,it was found that when the dissolution conditions were 80℃,solid-liquid ratio 1:25 and acid concentration 10%,the dissolution effect of phosphogypsum was the best,and the dissolution rate reached 89.42%.Finally,white and needle-like gypsum whisker was obtained.
phosphogypsumhydrochloric acidcalcium sulfate whiskersolubilityorthogonal test method
万方数据
维普
