METHOD FOR IRON PHOSPHATE CO-PRODUCTION BY MEANS OF NITROPHOSPHATE FERTILIZER APPARATUS, PRODUCT AND SYSTEM

Disclosed are a method for iron phosphate co-production by means of a nitrophosphate fertilizer apparatus, a product, and a system. The method comprises: carrying out acidolysis on phosphorite using nitric acid, and separating acid-insoluble substances to obtain an acidolysis solution; freezing and crystallizing the acidolysis solution, and performing solid-liquid separation to obtain a first solution; adding the first solution into a solution containing sulfate, and reacting to obtain a second solution; performing nitrate removal on the second solution, to obtain a third solution; adding ammonia into the third solution for neutralization, performing solid-liquid separation on the neutralized solution to obtain an ammonium phosphate solution, then adding an iron source into the ammonium phosphate solution and reacting, to obtain iron phosphate. The present invention involves the production and preparation of high-purity iron phosphate from a phosphate raw material, and a by-product generated during the produc