Metallurgical industry is an important basic industry of national economy, which provides important raw material guarantee for social development and strongly supports the development of related industries. With the global climate change and the situation of carbon emissions is becoming increasingly severe, the development of the metallurgical industry facing the environmental pressure is more and more big, especially as a resource and energy consumption of iron and steel industry, iron and steel production environment problem increasingly attracting the attention of the society as a whole, greening and intelligent became the important direction of the development of steel industry, become the key to transformation and upgrading of industry.

Promote the manufacturing process of the greening is the main content of green steel industry development, according to the steel manufacturing process of three functional positioning: given steel products manufacturing, energy conversion and waste treatment, based on principles of "reduction, reuse, recycling", aiming at zero emissions, to the manufacturing process of remaining heat and pressure, residual gas, waste water and iron material and solid waste recycling fully, finally realize clean production and the manufacturing process of greenization. Around the steel manufacturing process of green development in recent years, focus on development and application of dry coke quenching, blast furnace gas dry dust removal, converter gas dry dust removal of the "three" technology, the comprehensive utilization of water, deputy to produce gas, coke oven, high furnace, converter) represented by the secondary energy utilization technology, represented by blast furnace slag, slag comprehensive utilization of solid waste technology. In addition, advanced technologies such as waste heat recovery and resource utilization of furnace slag, new technology of compound iron and coke, collaborative optimization technology of material flow, energy flow and information flow (big data) in steel works, carbon dioxide capture, utilization and storage technology have also become the forefront of development.

Intelligent manufacturing is an important trend in the future development of the manufacturing industry, and also an important way to upgrade the steel industry and improve quality and efficiency. The iron and steel industry is one of the process industries with high degree of automation. With the help of "Internet +", Internet of things and other intelligent manufacturing technologies, it promotes the customization, flexibility, greening, networking and intellectualization of the steel production mode, and further promotes the transformation and upgrading of the steel industry. In recent years, intelligent manufacture in steel production, enterprise management, logistics distribution, product sales and other applications of the deepening, surrounding the process of intelligent manufacturing, mass customization etc. Pilot construction of the intelligent digital factory or workshop, carried out the man-machine intelligent interaction, industrial robots, intelligent logistics management and so on the application of technology and equipment in the production process, promote the optimization of steel manufacturing process simulation is, digital control and status information real-time monitoring and adaptive control, the application of technology. But overall, the intelligent manufacturing iron and steel industry is still in the primary stage, still need to focus on future development based on industrial big data key process equipment expert intelligent control system, intelligent robot technology, manufacturing process and multi-objective optimal real-time online operation technology, key technology and equipment of intelligent fault diagnosis and protection of large data systems, intelligent optimization technology, metallurgical industry supply chain collaborative manufacturing key technologies, such as enterprise information integration technology.

Since 2012, from the "green and intelligent metallurgy manufacturing process" engineering development frontier core patent distribution, China is a "green and intelligent metallurgy manufacturing process" core patent main producer, accounting for 93.17% of global patent public traffic, the cited frequency, the main production core patent agencies are mainly concentrated in China, indicates that our country in this field of research and development in the world very important position. From the perspective of average cited times of core patents, the United States and Japan are higher than China, which indicates that the United States and Japan have gained more attention and recognition in the development of this technology and have higher innovation. From the perspective of the cooperation network among countries, regions and institutions, the cooperation between major countries or regions and institutions is relatively sparse, which indicates that the cooperation between enterprises in this field is less, mainly independent research and development.