Process for producing Phosphoric Acid from phosphate Rock (apatitas) comprising reacting The Rock with gases containing SO2, SO3,Or their Mixtures; Cool and generated the calcine leaching and washing with water; flue gas.

摘要

A process for producing Phosphoric Acid from phosphate rock or rock phosphate Concentrate,By reaction with Sulfur dioxide containing gas through the stages of preheating of the phosphate Rock; reaction with SO2 gas in a fluidized bed; leaching dAnd the calcinas with water; solid-liquid separation of the leached Pulp; concentration of solution containing Phosphoric Acid, washing with water outlet gas PreheaterThe washing liquid and return to the stage of leaching the calcinas.