The invention provides an
iron ore pre-reduction
sintering method. The method comprises the steps that firstly, a traditional mixture is prepared,
iron ore powder, a
solvent and fuel are subjected to
raw material matching, mixing and granulating are conducted, and the traditional mixture is obtained; secondly, a pre-reduction mixture is prepared, after the
iron ore powder, an additive and the fuel are evenly mixed, pelleting is conducted, carbon-burdened
pellets are obtained and placed in a cylinder mixer, fuel
fine powder and quick
lime or slaked
lime are added for wrapping and granulating, and the pre-reduction mixture is obtained; thirdly,
material distribution is conducted, a double-layer
material distribution manner is adopted, the pre-reduction mixer prepared in the second step is placed on a
sintering machine trolley in advance, and the traditional mixture prepared in the first step is placed on the pre-reduction mixture; and fourthly,
sintering is conducted, ignition is conducted, and the traditional mixture and the pre-reduction mixture are subjected to
smoke circulation type sintering on a sintering
machine. The problem that CO
smoke is hard to treat is solved, secondary oxidization in the pre-reduction sinter reducing process is reduced, the
combustion atmosphere between material
layers is improved, the material temperature is increased, and generation of the iron ore material reducing reaction is accelerated.