Potassic salt ore filling material for realization of long distance gravity transportation and preparation method thereof

A potassic salt ore full-tailings cemented filling material for realization of long distance gravity transportation and a preparation method thereof belong to the fields of environment protection engineering, mineral engineering and comprehensive utilization technique of resources. By using solid wastes as a cementing agent and co-processing wastes such as potassic salt ore tail salt and tail liquid which are currently hard for comprehensive utilization, the influence of potassic salt ore tail salt and tail liquid on the mine environment is solved. The ratio of ingredients is controlled as follows: the ratio of potassic salt ore tail salt to potassic salt ore tail liquid to the cementing agent is 55-83%: 15-30%: 2-15%. By mixing the above three ingredients and uniformly strring, the potassic salt ore underground filling material which can realize gravity transportation and meet the requirement of long-term strength can be obtained. The filling slurry prepared by the method has advantages of stable system, rea