Technology of producing ammonium sulfate phosphate product from tailing slag

The invention discloses a technology of producing an ammonium sulfate phosphate product from tailing slag. The technology utilizes phosphogypsum, which is a byproduct of a phosphoric acid device, and carbon dioxide, which is a byproduct of a synthetic ammonia device, to react with synthetic ammonia to produce ammonium sulfate material pulp, subjects a raffinate, which is a byproduct of wet-process phosphoric acid purification, to react with synthetic ammonia to produce ammonium phosphate material pulp, mixes the two material pulps according to a certain ratio, adds a right amount of tailing slag of a mineral grinding device into the mixture, and puts the mixture into a granulation/drying machine to carry out a spraying granulation process. Semi-finished products are subjected to processes of grinding, sieving and washing, and finally qualified product particles with particle size in the range of 2 to 4 mm are obtained. The particles are added with a coloring agent and coating agent according to the needs to o