Recovery method and application of salty mud

The invention relates to a recovery method and application of salty mud, and belongs to the technical field of chemical processes. According to the method, sodium sulfate in the mineral salt brine and calcium chloride in the clear waste liquid discharged by a sodium carbonate plant are subjected to a chemical reaction, then the salty mud generated by refining the mineral salt brine is mixed with the reaction liquid, the mixture of sodium chloride, gypsum and the salty mud can be generated through the procedures of sedimentation and filtration, and the obtained sodium chloride can be used for alkali production; the mixture of the gypsum and the salty mud can be used as a building material; the gypsum and salty mud mixture obtained by the method disclosed by the invention has stable indexes, and can be directly sold as a semi-finished product; according to the method, multiple sets of processes are adopted for treatment, the problem of blockage of equipment pipelines in the recovery process is solved, corrosion