Iron and steel industry development connotation green tube industry for green development is in accordance with the basic principles of recycling economy, clean production as the foundation and focus on efficient use of resources and energy conservation, the full realization of steel products manufacturing, energy conversion and waste disposal consumptive and recycling the three functions, with a low carbon characteristics, to achieve ecological links with other sectors and social life, in order to ensure a good model of economic development, environmental and social benefits. In terms of steel manufacturing, reflecting the process optimization, advanced technology and steel production equipment and technology innovation, namely iron scorch other steel long flow processes are the core characteristics of energy resources for China to break the bottleneck of resources and energy, breaking low carbon technologies; D and production of green products under the concept of life cycle; the use of information technology to promote research and development of intelligent control system for the main process expert. In terms of energy conversion, reflecting the efficient use of energy, recycling technology innovation, namely steel green manufacturing, energy saving, environmental protection are inseparable required depth, systematic development; in waste disposal and recycling consumptive function, reflecting the metallurgical and social waste, consumptive, recycling technology innovation that strengthen collaboration between the steel industry and with more convergence, more efficient use of resources, a breakthrough technology, interests and other bottlenecks and barriers, building cross Green circles chain. "Eleventh Five-Year" period of development of the iron and steel processes, "Eleventh Five-Year" period, the development of China's iron and steel processes highlighted in the converter efficiency dephosphorization process, a new generation of recyclable steel process technology, cost-efficient clean steel platform and other key technologies applications. Shougang Jingtang Iron and Steel Plant to achieve the process advanced, large-scale equipment, a "product manufacturing, energy conversion and solid waste elimination on" three functions, is representative of a new generation of recyclable steel process. The process is characterized by: 1) the use of "a new generation of process" to achieve a cost-effective production of clean steel; 2) the use of "a" type layout, process short McNair smooth, compact layout, tons of steel covers for 0.9m2; 3) decentralized and centralized layout combined optimization process interface, material flow, energy flow dissipation is minimized. Its main features include: 7.63m large oven, 260t / h CDQ, 500m2 sintering machine, 504m2 pellet belt roasting machine, 5500m3 blast furnace, 300t converter, KR, RH, LF, CAS, 2250mm, 1580mm hot strip mill , 2230mm, 1700mm, 1550mm cold rolling. Shougang Jingtang steel plant environmental investment 7.47 billion yuan, 11.2% of the total investment; for heat, and pressure, residual gas, wastewater, and solid waste ferrous full recycling, waste water, solid waste and zero emissions; Implementation Desalination, annual savings of 20 million freshwater t, provide the community with brine 18 million t; DC power plant uses seawater to cool, the annual saving of 10.7 million t; the use of surplus gas, blast furnace gas pressure, CDQ cogeneration, in spontaneous power 5.5 billion degrees, since more than 95% power; blast furnace slag, converter slag and fly ash plant for the production of cement and other construction materials. "1025" period of the development of the iron and steel processes "five" since, steel, iron, steel, rolled critical interface material flow, energy flow collaborative optimization technology development is the focus of the steel process innovation. 1) iron - steel interface material flow, energy flow collaborative optimization techniques to iron - steel interface "pot in the end" model as the basis, the application of research findings to optimize the operating mechanism, reasonable structure to enhance iron - refining Dynamic run steel interface between the material flow, energy flow, information flow collaborative optimization, build a jar in the end technology package. Mainly from the material flow, energy flow angle to run concurrently, building energy flow and material flow distribution model and analyze coupling; research on the dynamic changes of the hot metal temperature of the substance during the operation carried out; analysis of the conditions under integrated scheduling, refining Iron - Steel Interface Research reasonable operating modes and related factors; research in iron, steel, hot-rolled schedule overall cost efficiency under optimized conditions, the output of the iron furnace Steel dephosphorization best operating mode interface. 2) Steel interface, interface-based casting material flow energy flow information flow collaborative optimization techniques mainly solidified microstructure control - control of the organization - deformation + phase transition organization, casting, rolling, materials integration technology. Protect pouring when casting, low superheat pouring, under light pressure, liquid core reduction, OM; in the former rolling, hot rolled straight delivery, low temperature soaking, clean combustion, oxyfuel, etc; in rolling When the system, to take the load distribution optimization, process lubrication, TMCP, online heat; after accelerated cooling, researchers cooled cooling path control, ultra-fast cooling side shields. Carried out in the cast - rolling - timber integrated physical model, process model and control model, virtual production technology, as well as cast - rolling - material microstructure evolution model of integration, performance control model, forecast and other aspects of online and offline research. 3) material flow energy flow information flow collaborative optimization information network modeling technology considering the manufacturing process of steel manufacturing processes, energy conversion process, the use of modeling and statistical methods mechanism combined with the construction of multi-scale weighted to connect to the network multi-level material and energy flow collaborative optimization network model. Steel research and practical interface to interface iron casting, steel, hot rolled integrated scheduling system - iron, variety, casting machine, furnace, energy input and output technology integrated scheduling package. ◆ considering steelmakers Steel products interface optimization, dynamic interface casting operation, energy conversion interface based on key technologies, key technology research information material and energy flow synergy of information technology software to experiment and demonstration applications. In production, energy use, environmental protection and more links, build steel flow energy flow network information model. ◆ steel companies to build energy flow simulation technology research and simulation platform. ◆ Shougang Jingtang existing EMS based on the integration of production process information, develop material flow energy flow of energy management and control software, collaboration, and demonstration applications. 

palabras clave: Seamless steel pipe, 35crmo steel, precision steel,