Innocent treatment method of calcium carbonate powder production waste material

The invention provides an innocent treatment method of a calcium carbonate powder production waste material. The method comprises the following steps of 1, performing stage-by-stage separation on waste materials to obtain big particles with the particle diameter being greater than 5mm, small particles with the particle diameter being 0.5 to 5mm and residual slurry with the particle diameter being smaller than 0.5mm; 2, performing flocculation and precipitation on the residual slurry by using flocculating agents; filtering precipitates; performing dewatering to obtain filter slag. The invention aims at providing the innocent treatment method of the calcium carbonate powder production waste material. By using the method, the recovery and the utilization of the calcium carbonate are realized through the grading treatment; the treatment efficiency is high; the environment is protected. 本发明提供了种重质碳酸钙粉体生产废料的无害化处理方法，包括以下步骤：步骤1：将废料经过逐级分离得到粒径大于5mm的大颗粒、粒径0.5-5mm的小颗粒以及包含粒径小于0.5mm颗粒的余浆；步骤2：将余浆采用絮凝剂进行絮凝沉淀；将沉淀物过滤并除水得到滤渣；本发明