Preparation method of modified lithium slag-based mine filling material

The invention provides a preparation method of a modified lithium slag-based mine filling material, which comprises the following steps of: performing mechanical activation, chemical activation and the like on various solid wastes such as alkaline residues, causticized white mud, desert aeolian sand, molybdenum tailings, steel slag, stainless steel slag, vanadium-titanium slag, circulating fluidized bed fly ash, circulating fluidized bed slag, electrolytic manganese slag, desulfurized gypsum, lithium slag and the like to prepare the modified lithium slag-based mine filling material. The preparation method can solve the problems of harmlessness, reduction and recycling of a large amount of industrial solid wastes, promotes the synergistic utilization of steel solid wastes, coal-based solid wastes, agricultural solid wastes, chemical solid wastes and non-ferrous metallurgical solid wastes, and has a wide application prospect in large-scale replacement of Portland cement cementing materials. And a foundation is