(1) Ironmaking: It is the process of reducing iron in sinter and lump ore. Coke, sinter and lump ore, plus a small amount of limestone, are sent to the blast furnace to be converted into liquid pig iron (molten iron), and then sent to the steelmaking plant as raw materials for steelmaking.
(2) Shuogang: It is to remove excessive carbon, sulfur, phosphorus and other impurities from raw materials (molten iron, scrap steel, etc.). ) and add this amount of alloy components.
(3) Continuous casting: molten steel is continuously poured into a water-cooled refining furnace through a tundish, solidified into a blank shell, pulled out of the crystallizer at a stable speed, cooled by water spraying, and cut into a continuous casting blank with a specified length after all solidification.
(4) Steel rolling: continuous casting ingots and billets are hot rolled into various steels on different rolling mills.
Extended data
Iron and steel industry description:
Iron and steel industry refers to the production of pig iron, steel, steel, industrial pure iron and ferroalloy industry, which is one of the basic industries in all industrialized countries in the world. Economists usually regard steel output or per capita steel output as an important index to measure the economic strength of various countries.
Iron and steel industry is also called ferrous metallurgy industry. Iron and steel industry is an important basic industrial sector and the material basis for developing national economy and national defense construction. The level of metallurgical industry is also a sign to measure a country's industrialization. Iron and steel industry is a huge heavy industry sector.
Its raw material, fuel and auxiliary material resources affect the scale, product quality, economic benefit and layout direction of iron and steel industry.
References:
Iron and Steel Industry-Baidu Encyclopedia: Iron and Steel Industry-Baidu Encyclopedia