Mine filling material, preparation device and preparation method of mine filling material, cementing agent slurry for mine filling

The invention discloses a mine filling material, a preparation device and a preparation method of the mine filling material, cementing agent slurry for mine filling, and belongs to the technical fieldof mining engineering and building materials. The cementing agent slurry for mine filling is formed by mixing premixed powder of silicon aluminum and calcium raw materials and titanium gypsum slurry;concretely, the cementing agent slurry dry basis is prepared from the following ingredients in percentage by weight: 0 to 15 percent of fly ash, 15 to 70 percent of ore slag micro powder, 0 to 15 percent of steel slag micro powder, 5 to 20 percent of cement and 25 to 50 percent of industrial byproduct titanium gypsum. The mine filling material is formed by mixing tailings slurry formed by full tailing sand and water and the cementing agent slurry through stirring and mixing. When the technical scheme is used, the intensity of a mine filling body can be effectively improved; the effective resource utilization on indust