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Metallurgist

, Volume 43, Issue 1, pp 30–33 | Cite as

Blast-furnace operation with coke fines

  • L. D. Nikitin
  • M. F. Mar'yasov
  • V. P. Gorbachev
  • S. F. Bugaev
  • Yu. M. Denisov
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Conclusion

Depending on the smelting conditions, the use of coke fines (36-25 mm) for up to 22% of the coke charged into a blast furnace having a standard bell-and-hopper charging appratus, led to a decrease in pig-iron output by 1.0–1.6% (or 0.2–0.4% for each 1% of coke fines), an increase in unit coke consumption by 0.8–1.0% (or by 1.0%-0.19-0.17%), and a deterioration in the drainage capacity of the hearth.

The performance indices of the furnace equipped with a revolving distributor show that it is possible to force smelting while using up to 25% coke of the 36-25-mm fraction in the charge. If the coke in the charge consists of more than 30% fines, smelting rate decreases and hearth performance declines. These developments are accompanied by a 3.3–3.6% reduction in furnace productivity (0.12–0.13% for each 1.0% of the 36-25-mm fraction of coke) and a 0.85–0.90% increase in unit coke consumption (0.03–0.04% for each 1% of coke fines).

Keywords

Blast Furnace Coke Consumption Furnace Productivity Coke Fine Drainage Capacity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic/Plenum Publishers 1999

Authors and Affiliations

  • L. D. Nikitin
  • M. F. Mar'yasov
  • V. P. Gorbachev
  • S. F. Bugaev
  • Yu. M. Denisov

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