Method for preparing blast furnace injection waste tire and pulverized coal mixed fuel and injection method thereof

The invention relates to a method for preparing blast furnace injection waste tire and pulverized coal mixed fuel and an injection method thereof, and belongs to the technical field of blast furnace injection. The method comprises the following steps: cutting the waste tire by a cutting machine, and crushing to obtain colloidal particles with the particle size of 25mm; enabling the obtained colloidal particles to pass through a fiber air suction device; 90-95 wt% of steel wires in the waste tires are removed from the treated rubber particles through an adhesive tape cross type magnetic field; freezing the rubber particles without the steel wires in liquid nitrogen, and crushing by using a hammer crusher to obtain waste tire rubber particle powder with the particle size of 30-40 meshes; uniformly mixing the obtained waste tire rubber particle powder with anthracite pulverized coal to obtain a waste tire-pulverized coal mixed fuel I; preheating the waste tire-pulverized coal mixed fuel I at 170 DEG C, and then