Research On Operation Characteristics Of Auxiliary Resources In Iron And Steel Making System For Green Manufacturing

Steel industry is the supporting industry in national economy; also it’s an industry of denseresource, dense energy and of large amount of pollution letting. In recent years, based onstructure adjustment and technology progress, the national steel industry has reached remarkableachievement in energy-saving, material-saving and reducing of pollution letting. But due to thecontinuous rapidly increasing of steel yield; increasing amount of resource consumption andpollution letting, the development of steel industry in our country is facing the austere challengefrom resource and environment. The steel manufacturing system is an input/output system in thatthe main iron resources with the cooperation of limestone and other auxiliary resourcestransform into main products and by-products through a series of metallurgical units. In each unitprocess there are different resource consumption and kinds of emissions. The main iron materialresources and auxiliary resources is the root cause of the resource consumption andenvironmental impact in steel manufacturing system, the cooperate relationship among themdetermines the resource efficiency, energy consumption and environmental impact. Therefore, itis particularly important to analyze the flow of resources in iron and steel manufacturing system.With the steel life-cycle process of the steel products as the main line, as well as the supportof green-integrated manufacturing system, The projeet of this paper studied the runningcharacteristics of auxiliary resources and the influence mechanism to resource consumption andenvironmental emissions, which can provide solutions for reference to implement greenmanufacturing, optimize the utilization of resources and emissions reduction. The main contentsof this paper are sponsored by the Research Fund of National Natural ScienceFoundation(70971102). Main research contents are as follows:(1) Based of the analzing the process characteristics of manufacturing systems, the resourcesare divided into principal resources and auxiliary resources and State their meaning and features;the Iron element conversion process in typical steel manufacturing unit and the auxiliaryresources influencing to the conversion efficiency and environmental emission is dicussed, andthe research architecture on objective laws of the resources flow in steel manufacturing system isconstructed.(2) Complex spatial and temporal characteristics formed by the accessories resources incoping with principal materials resources during life cycle in iron and steel manufacturingsystem affect the conversion efficiency, resource consumption and emissions. The analysisframework to the running characteristics of accessories resources is established, and thespace-time characteristics, input and output feedback and emission characteristics are analyzed.(3) Presentate the general method on analysis the dynamic mathematical relations of theinput consumption, output, feedback and emissions. A resources flow optimization operationtheory model is presented which considerating of productivity, quality, cost, resourceconsumption, environmental impact and occupational health and safety hazards as the goal, andthe running characteristics of auxiliary resources as control parameters. On the application modelto sintering, ironmaking, steelmaking these typical unit, the blast furnace coke rate prediction and optimization based on running characteristic of auxiliary resources is taken as an example.(4) On the basis of the above research and conlusion, an application supporting prototypesystem of resource optimal operating based on auxiliary resources’ running characteristic havedeveloped and applied, and the frame structure and work flow of the system are analyzed. A caseis integrated to testify all above-mentioned research contents and better application results havemade.