Optimization of agglomeration burdens by metallugical properties complex Report 2. Optimization of BF burden components by their complex high temperature properties
| Autor: | A. Yu. Chernavin, A. V. D’yakov, V. A. Kobelev, G. A. Nechkin, M. F. Vituschenko, A. A. Odintsov |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information. 1:29-37 |
| ISSN: | 2619-0753 0135-5910 |
| DOI: | 10.32339/0135-5910-2018-11-29-37 |
| Popis: | Along with strength characteristics of agglomerated raw materials, its high temperature properties - the degree of reducibility, softening-smelting temperature and melt filterability through coke filling - have a great influence on technological indices of BF process. Knowledge of the properties change regularities is and actual task for through optimization of blast furnace burden composition aimed at BF smelting intensification. Blast furnace burden composition influence on reducibility, temperature interval of softening-smelting, viscosity of intermediate slags, filterability heat products through coke filling and desulphurization ability of intermediate slags studied. Influence of BOF nickel slag additions on complex of high temperature properties of iron ore raw materials estimated. Influence of pellets portion in BF burden on the process of BF slag filtration considered. It was shown, that increase of pellets portion in the burden results in slag filterability through coke filling decrease during the BF burden smelting. A favorable role of BOF nickel slag in agglomeration and blast furnace processes of JSC “ArcelorMittal Temirtau” determined. Analysis of the data obtained showed that Sulphur content in hot metal during slag sinter smelting depends practically only on intermediate slag basicity. Range of main components content in the iron ore raw materials determined, as well as contents of sinter and blast furnace burdens of JSC “ArcelorMittal Temirtau”, having most favorable complex of high temperature properties and to a great extent meeting the requirements to the iron ore raw materials. |
| Databáze: | OpenAIRE |
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