Blast furnace ironmaking process

The essence of blast furnace ironmaking is the reduction process of iron, that is, the iron in iron ore or iron-containing raw materials is reduced from oxide or mineral state (such as Fe2O3, Fe3O4, Fe2SiO4, Fe3O4, TiO2, etc.) with coke as fuel and reductant. ) to liquid pig iron at high temperature.

During the smelting process, the burden (ore, flux, coke) is loaded into the furnace in batches from the top of the furnace through charging equipment according to a certain proportion. The high-temperature hot air blown from the downdraft reacts with coke, which leads to the rise of high-temperature reducing gas, heating, reducing, melting and slagging the charge, resulting in a series of physical and chemical changes. Finally, liquid slag and iron are collected in the furnace and discharged from the blast furnace regularly. In the process of rising, the temperature of the air flow is decreasing and the composition is changing gradually, and finally the blast furnace gas is discharged from the top of the furnace. Flow chart/problem/182342806.html? an = 3 & ampsi=3