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Эффективность использования повышенной доли железорудных окатышей в доменном производстве

Эффективность использования повышенной доли железорудных окатышей в доменном производстве

Abstract

The present article discusses the difficulties associated with increasing the share of pellets in blast furnace charge. The primary factors contributing to the decline in gas permeability of the charge column, resulting from the dissolution of hematite pellets during reduction, are examined. Furthermore, potential methodologies for the optimization of charge materials are explored, encompassing the utilization of partially metallized pellets. The present study investigates the impact of augmenting the proportion of pellets within the blast furnace charge on the gas permeability, reduction processes, and economic indicators of smelting. The calculations of coke rate reduction and productivity growth under different charging scenarios are given. The utilization of partially metallized pellets has been demonstrated to be a viable method for mitigating the adverse effects and enhancing the efficiency of the blast furnace process.

В данной статье рассматриваются трудности, связанные с увеличением доли окатышей в шихте доменного производства. Указаны основные причины снижения газопроницаемости столба шихты изза разрушения гематитовых окатышей при восстановлении, а также исследуются возможные способы оптимизации шихтовых материалов, включая использование частично металлизованных окатышей. Рассматривается влияние увеличения доли окатышей в доменной шихте на газопроницаемость, восстановительные процессы и экономические показатели плавки. Приведены расчеты снижения расхода кокса и роста производительности при различных сценариях шихтования. Показано, что использование частично металлизованных окатышей позволяет минимизировать негативные эффекты и повысить эффективность доменного процесса.

Работа выполнена в рамках Государственного задания ИМЕТ УрО РАН.

Keywords

BLAST FURNACE, COKE RATE, ВОССТАНОВЛЕНИЕ ГЕМАТИТА, МЕТАЛЛИЗАЦИЯ, METALLIZATION, ОКАТЫШИ, MATHEMATICAL MODELLING, ДОМЕННАЯ ПЕЧЬ, PELLETS, BLAST FURNACE CHARGE, ДОМЕННАЯ ШИХТА, ГАЗОПРОНИЦАЕМОСТЬ, МАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ, HEMATITE REDUCTION, РАСХОД КОКСА, GAS PERMEABILITY

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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