The endpoint temperature and carbon content of basic oxygen furnace (BOF) are the control of the BOF steelmaking process. There exists a complex relationship among them and each control variable. While the multiple linear model is limited to predict the endpoint temperature and carbon content through each control variable, and the online continue measurement can’t be made. So the predictive mod...

Recycling is extremely important for steelmaking. In developed countries, about 60% of steel is manufactured from scrap. The scrap contains 0.5% of zinc in average, and this percentage steadily increases. During the steelmaking process both in basic oxygen furnaces (BOF) and in electric arc furnaces (EAF), all volatile zinc is released and forms airborne particles of dust. About 20 kg of dust i...

In secondary steelmaking, the refining operation is typically carried out in a metallurgical ladle that is commonly furnished with gas injection facilities. Since gas injection plays an intrinsic role in determining the efficiency of secondary steelmaking and thus the quality of final products, a great volume of work has been conducted mostly utilizing air-water systems at room temperature. Des...

The present paper introduces the steel production and BOF slag processing techniques in Steelmaking Sector of Bayuquan Iron and Steel Subsidiary, Ansteel. The technology of slag tailings utilization has been developed under the consideration of the properties of slag tailing and the characteristics of slag forming in BOF steelmaking operation practice. The processing of the BOF slag includes ho...

The development of optimization models for planning and scheduling is one of the most useful tools for improving productivity of a large number of manufacturing companies. This paper presents a mixed-integer programming model for scheduling steelmaking-continuous casting production. We first review the recent works in continuous casting planning. We focus on a model inspired from an application...

the histry of metal production sepecia11y iron-and steelmaking from 7000 b.c. in iran and in the world is presented in this paper. the planned steel making projects for iran since 17 century up to present is explained

background: the study aims at clarifying prevalence of work-related musculoskeletal disorders (wmsds) among steel mak­ing workers and employees as well as associated lost work days. methods: a detailed questionnaire based on nordic ergonomic questionnaire describing work history, ergonomic condi­tions at work, sign and symptoms of musculoskeletal system with in previous12 months was applied to ...