Method for high-value recycling of pyrite-containing waste residues

The invention relates to the technical field of solid waste resource recycling, in particular to a method for high-value recycling of pyrite-containing waste residues. The method comprises the following steps: carrying out wet leaching on the pyrite-containing waste residue to obtain a leachate; adding an iron source into the leachate, and carrying out directional conversion to obtain an iron-rich solution; adding an organic additive and a seed crystal into the iron-rich solution, crystallizing, and then carrying out solid-liquid separation to respectively obtain ferrous sulfate crystals and an acidic solution; distilling and purifying the acidic liquid to respectively obtain sulfuric acid and an organic additive; wherein the organic additive obtained by distillation and purification is returned to the crystal for cyclic utilization; according to the method, full-quantization high-value utilization is carried out on the pyrite-containing waste residues, iron resources and sulfur resources in the waste residue