Chernye Metally

The Russian section of this issue includes two articles. A. V. Simankov, Yu. S. Yusfin, I. E. Shepetovsky et al. present the problems of development of power-saving technologies in ironmaking in blast furnaces. The experience of usage of anthracite instead of coke during industrial testings at No. 1 blast furnace with 1,066 cu. m volume at Kosogorsky metallurgical works is described.

Specialists from All-Russian Scientific and Technical Institute ob Metallurgical Machine-Building (VNIIMETMASH) A. V. Luk'yanov, A. V. Protasov, B. A. Sivak and N. A. Shchegolev observe in their article the process of ladle vacuum refining (VDF/VDOF) based on the principle of localization of volume of degassing metal via usage of reaction chamber with separation of vacuum chamber space in two areas with different depression degree. The project of modernization of vacuum vessel operating in the converter shop of "Severstal" metallurgical works, with putting into practice of VOD/VOFD unit is developed.

T. Jansen, K. Krüger, H. Schliephake et al. devoted their work to DC-EAF power control using a sound based foaming slag signal. The technology is based on the acoustic sound emission and the electrical parameters, an algorithm for foaming slag detection at a DC-EAF is presented. Regardless of the currently applied electrical power, the model provides a reliable estimate ofthe slag level.

Optimization of the pickling process at ThyssenKrupp Nirosta is observed by O. Junk and L. Winterhalder. For pickling installations with connected acid regeneration installations, a pickling bath conduction of process data on the basis of comprehensive and continuously captured process data creates an economic advantage.

Energy efficiency and environmental management in the steel industry is the theme of the study by J.-T. Ghenda, M. Joksch, G. Still and G. Endermann. Where fire and smoke once stood for progress and prosperity, the steel industry in Germany must now fight for public acceptance despite its use of advanced technologies in energy management, environmental and health protection. However, our modern society and further progress would be inconceivable without steel, and the same holds true for the protection of our environment and climate.

“How flexibly can metallurgical plants be operated?“. P. Schmöle prepared the answer on this question With the economic crisis which came more or less sudden towards the end of 2008, the operatorsof metallurgical plants were facing completely new problems. In view of costs which explodedin proportion to the reduced production quantity on the one hand, and the necessity to preserve the existing plantson the other hand, in order to step up production and sustainably keep it on ahigh level as soon as demand startedto increase again, the responsible operators had to take quite interesting strategic decisions on various solutionsgeared to plant-specific conditions.

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