Treatment system and process for reclaimed sand

The invention provides a reclaimed sand treatment system and process, and relates to the technical field of casting. A reclaimed sand treatment process comprises the following steps that S1, foundry waste sand is crushed, and the particle size of the crushed waste sand is 100-200 meshes; s2, carrying out magnetic separation on the crushed waste sand, and then carrying out stirring and grinding treatment; s3, the waste sand obtained after sanding treatment is preheated, and tail gas obtained after preheating treatment is recycled; and S4, the waste sand obtained after preheating treatment is subjected to heating regeneration treatment, then cooling and vibration screening are conducted, and regenerated sand is obtained. According to the treatment process of the reclaimed sand, the waste sand is recycled and regenerated through the processes of grinding, preheating and heating regeneration, the recycling rate of the waste sand can be increased, and the reclaimed sand can be repeatedly utilized conveniently. And