In 2022, the steel industry will adhere to the principles of marketization and rule of law, give play to the role of market mechanism, and strictly implement relevant laws and regulations on environmental protection, energy consumption, safety and land use. Guide iron and steel enterprises to abandon the extensive development mode of winning by quantity and promote the high-quality development of iron and steel industry. Adhere to the key points, avoid "one size fits all", focus on reducing the crude steel output in Beijing-Tianjin-Hebei and surrounding areas, Yangtze River Delta region, Wei Fen Plain and other key areas for air pollution prevention and control, and focus on reducing the crude steel output with poor environmental protection performance, high energy consumption and relatively backward technical equipment level.
Steel is the general name of iron-carbon alloy with carbon content of 0.02%-2. 1 1%. The chemical composition of steel varies greatly. Steel containing a small amount of elements such as manganese, phosphorus, silicon and sulfur, and the carbon content is less than 1.7%, is called carbon steel. In actual production, steel often contains different alloying elements, such as manganese, nickel and vanadium, according to different uses. The application and research of steel has a long history, but before the invention of bainite steelmaking in the19th century, the production of steel was a high-cost and inefficient work. Nowadays, steel has become the most widely used material in the world because of its low price and reliable performance.