The invention belongs to the technical field of
ferrous metallurgy, and particularly relates to a method for preventing a cold pressing block from
bursting and bonding in the
carbonization process. The method comprises the following steps: mixing
iron ore powder,
bituminous coal,
anthracite and an
adhesive in proportion, heating, and carrying out cold press molding to prepare a cold press block; the method comprises the following steps: spraying a composite anti-sticking agent solution mainly comprising desulfurized
gypsum and
lignin on the surface of a cold-pressed block, sequentially heating in a
nitrogen atmosphere, and carrying out multi-stage
carbonization treatment to finally obtain a composite iron
coke product. By optimizing the
heating system and innovatively adopting the desulfurized
gypsum-based composite anti-sticking agent, the problems of
cracking and bonding of the cold-pressed block in the
carbonization process are remarkably inhibited, the yield, the
mechanical strength and the
process efficiency are greatly improved, high-value utilization of industrial
solid wastes is realized, and the method has the advantages that the raw materials are easy to obtain, the method is green and environment-friendly, the process is simple and convenient, and the like. And the practical application requirements of
blast furnace ironmaking production are met.