This article explores coordinated scheduling problem arising in steelmaking and multi-refining operations. Jobs are first processed in converters and then transported downstream to be processed in refining furnaces in which two different transporters are employed in tandem at the stage of transportation. There exist multi-refining jobs. The objective is to minimize the maximum completion time s...

A substantial CO 2 -emmissions abatement from the steel sector seems to be a challenging task without support of so-called “breakthrough technologies”, such as hydrogen-based direct reduction process. The scope this work is evaluate both potential for implementation green hydrogen, generated via electrolysis in process well constraints. results route are compared with well-established blast fur...

The steel industry is an important engine for sustainable growth, added value, and high-quality employment within the European Union. It committed to reducing its CO2 emissions due production by up 50% 2030 compared 1990′s level developing upscaling technologies required contribute initiatives, such as Circular Economy Action Plan (CEAP) Green Deal (EGD). Clean Steel Partnership (CSP, a public–...

Abstract Within the steelmaking industry, a large amount of zinc-bearing waste is produced which cannot be effectively treated through integrated steel mills. Concurrently, zinc smelters generate residues containing significant amounts iron and are stored or landfilled. The concentration inhibits its recycling to blast furnace but insufficient sent directly producers. Consequently, means up-con...

J. Burja, F. Tehovnik, F. Vode, B. Arh, Institute of Metals and Technology, Ljubljana, Slovenia In this chromium slags that form during melting of chromium alloyed steels are examined. During melting and oxidation of these steel grades a considerable amount of chromium is lost, and gained back with slag reduction. Laboratory experiments were performed to study the mechanism of chromium oxide re...

Companhia Siderúrgica de Tubarão CST, is investing to expand production level in 50%, adding new equipment and altering production process. Simulation is widely used in CST, mainly in strategic phases prior to capital investment. A previous simulation model developed with ARENA was enhanced to help CST achieve new goals: to analyze new process plan with operational details, testing different pr...

The paper deals with solution of logistic problem for converter production of metallurgical enterprises. A developed multiagent simulation model of converter production is applied to solve the problem. This model allows assessing the different variants of the cranes motion between steelmaking aggregates. Three variants of the cranes motion have been considered during experiments with the model....