Tailings dry discharge is a new tailings disposal technology that has gradually emerged in recent years. It means that the tailings slurry output by the beneficiation process is concentrated in multiple stages and then dewatered by a dewatering vibrating screen. The formation of slag with low water content, easy precipitation and solidification and storage on site, the slag can be transported to a fixed location for dry storage. This technology has gradually become the three main ways and technologies for the treatment and utilization of tailings in large and medium-sized mines, and has broad application prospects.