Production process of modified ardealite artificial aggregate

The invention provides a production process of a modified phosphogypsum artificial aggregate, which comprises the following steps: hydrating quicklime, adding phosphogypsum, adding a modifier, fully stirring, placing to naturally air-dry, and grinding in a ball mill after air-drying to obtain the modified phosphogypsum. Modified ardealite and mineral powder cement are used as raw materials and put into a granulator for granulation to prepare ardealite balls, the ardealite balls are soaked in water for maintenance for 14-28 d, then the ardealite balls are put into a crusher to prepare artificial aggregates, and finally the artificial aggregates with different particle size specifications are obtained through screening. The modifier is added, and the modifier comprises a phosphoric acid chelating agent and a phosphoric acid precipitating agent, so that the formation of gel and ettringite by calcium ions in the subsequent phosphogypsum hydration process is not influenced, phosphate radicals are better cured, pol