The invention provides a technology for preparing
iron phosphate through a hydrolytic method. The technology for preparing the
iron phosphate through the hydrolytic method comprises the steps that 1
aqueous solution of the
iron phosphate and
phosphoric acid are added, an
oxidizing agent is added while stirring is conducted, and the temperature is heated to 90 to 95 DEG C; 2 deionized water is added in a hydrolyzing tank, then the temperature is heated to 90 to 95 DEG C, the solution obtained in the step 1 is totally added into the hot water while stirring is conducted, and
sediment of the iron
phosphate is generated; 3 the mixing solution obtained in the step 2 is filtered immediately, and primary iron
phosphate product
sediment A and mother solution A are obtained; 4 according to inversion, all the
sediment A obtained in the step 3 are added into 0.5 mol / L iron
phosphate solution and is stirred, the temperature is heated to 90 to 95 DEG C, the temperature is maintained for 1 hour, filtering is conducted, and sediment B and mother solution B are obtained. The mother solution B acts on the step 4 of a product in a next batch, a
filter cake is pulped and washed by the deionized water in the normal temperature,
drying in 100 to 120 DEG C is conducted, and the product is obtained. The technology for preparing the iron phosphate through the hydrolytic method has the advantages that
water treatment in the technology is simplified and circulative, and lowering the cost is facilitated.