The invention discloses a method for soiling
metal tailings and stabilizing
heavy metals. The method comprises the following steps of S1,
drying, crushing and sieving
coal gangue to obtain
coal ganguepowder, and air-
drying municipal
sludge to obtain air-dried municipal
sludge; and S2, turning over the
tailings to be treated, adding the
coal gangue powder accounting for 5-10% of the
mass of the
tailings and the air-dried municipal
sludge accounting for 5-10% of the
mass of the tailings during turning over, uniformly mixing, adding a stabilizing agent accounting for 3-13% of the
mass of the tailings and water, continuously and uniformly mixing to obtain a mixture with the
solid-to-
liquid ratio of 1: 0.2-0.3, and standing for at least one month. According to the method for soiling the metaltailings and stabilizing the
heavy metals provided by the invention, the
coal gangue and the municipal sludge are doped into the tailings and mixed, so that the
fertility of the tailings is improved,the effect of reducing partial heavy
metal mobility is achieved, then the stabilizing agent is added, most heavy
metal in a mixture is stabilized, the heavy metal of the tailings is stabilized while the tailings are soiled, and therefore, the
ecological environment around the tailings is effectively protected.