Abstract Scope |
In this paper, five kinds of calcium-containing fluxes (calcium-containing flux A, calcium-containing flux B, calcium-containing flux C, calcium-containing flux D, and calcium-containing flux E) were selected to improve the basicity of pellets, at the same time, their physicochemical properties and microstructure were analyzed and compared. A new production process and technical route of using calcium-containing flux C to produce fluxed pellets were proposed, which has been well applied in Shougang Jingtang Company. The fluxed pellets possessed good quality with basicity at 1.1, SiO2 at 2.1%, and reduction swelling index at 16.5%. A good application effect was demonstrated that the pellet ratio in the charge of Shougang Jingtang Company increased from 28% to 55%, while the blast furnace slag reduced from 280kg/tHM to 215kg/tHM, and the fuel rate is reduced from 500kg/tHM to 483kg/tHM. |