Preparation method of ferric phosphate and product thereof

The invention discloses a preparation method of ferric phosphate and a product thereof. The preparation method comprises the following steps of: (1) introducing a ferric iron source solution into an acid resistant reaction kettle by using a metering pump, and then adding a certain dosage of phosphoric acid solution and stirring for 1h; (b) adding a certain dosage of organic solvent to the acid resistant reaction kettle, and preserving heat at 15-98 DEG C and aging for 0.5-24h; and (c) carrying out washing, filtering and spray drying on the obtained ferric phosphate slurry to obtain a final ferric phosphate product, wherein the proportion by weight of the water to the iron to the phosphoric acid to the organic solvent is 100:1-20:1-30:1-500. In the method, the traditional alkali is replaced by the organic solvent to prepare the ferric phosphate; and because the organic solvent has milder property and no harm to the human body, and the operating environment is beneficially improved after mass production. The ferric phosphate of two different crystal forms of amorphism and orthorhombic systems can be prepared by adopting the method.