Phosphorite decarburization calcination device

The invention discloses a phosphorite decarburization calcination device and belongs to the field of phosphorite decarburization calcination. The phosphorite decarburization calcination device comprises a flue gas heat recovering and phosphorite powder preheating section, a phosphorite powder fluidized calcination decomposition section and a phosphorite clinker cooling and heat recovery section which are sequentially communicated, wherein the flue gas heat recovering and phosphorite powder preheating section comprises at least three stages of gas-solid separators which are communicated, the phosphorite powder fluidized calcination decomposition section is a material scattering and fluidized calcination device, and the phosphorite clinker cooling and heat recovery section comprises an air cooling device and at least one stage of gas-solid separator which are communicated. The phosphorite decarburization calcination device disclosed by the invention has the advantages that the carbonate decomposition rate is high, the phosphorus recovery rate of the subsequent process can be greatly improved and the effects of energy saving and consumption reduction are remarkably realized.