Double-layer moisture sintering method for super-thick material layer

The invention belongs to the technical field of sintering production in the iron and steel industry, and particularly relates to a super-thick bed double-layer moisture sintering method which comprises the following steps: (1) mixing and granulating iron ore powder, a flux, solid fuel and return mine to obtain a sintering mixture A; (2) mixing and granulating the pre-wetted iron ore powder, flux, solid fuel and return mine to obtain a sintering mixture B; and (3) the first sintering mixture and the second sintering mixture are conveyed to different mixing bins, and then the mixtures are distributed into a sintering trolley in a layered mode through a round roller feeder and a multi-roller distributor to be ignited and sintered. According to the double-layer moisture sintering method for the super-thick material layer, the low-moisture sintering mixture subjected to pre-wetting treatment is distributed to the lower portion of the sintering material layer, and the phenomena that the flow speed of sintering gas