The steel production process mainly includes processes such as iron making, steel making, and rolling.

(1) Iron making: It is the process of reducing iron from sintered ore and block ore. Coke, sintered ore, and block ore, along with a small amount of limestone, are sent to the blast furnace for smelting into liquid pig iron (molten iron), which is then sent to the steelmaking plant as raw materials for steelmaking.

Ironmaking is a reduction reaction. Firstly, oxygen is used to oxidize iron and other substances in the ore into oxides of iron trioxide, sulfur, phosphorus, etc. The sparse oxide is discharged after treatment, and the phosphorus oxide is also added with lime and converted into slag before being discharged. The main reaction is to use C to reduce iron oxide by 2 Fe203+3C=4 Fe+3 C02.

(2) Steelmaking: It is the process of removing excessive impurities such as carbon, sulfur, and phosphorus from raw materials (such as molten iron and scrap steel) and adding an appropriate amount of alloy components

Steelmaking is an oxidation reaction, which is further processing after ironmaking. The main purpose is to remove excess C from Fe, as the high content of C affects the toughness of the steel. The reaction formula is: C+O2=CO2.

(3) Continuous casting: The molten steel is continuously injected into a water-cooled crystallizer through an intermediate tank, solidified into a shell, pulled out of the crystallizer at a stable speed, and then cooled by water spray. After it has fully solidified, it is cut into specified lengths for continuous casting(CCM).

(4) Rolling steel: The steel produced by continuous casting and the steel produced by continuous casting are also rolled into various types of steel by different rolling mills through hot rolling, forming products.