Recent Developments in Blast Furnace Technology
Journal Title: International Journal of engineering Research and Applications - Year 2017, Vol 7, Issue 4
Abstract
A huge production of steel throughout the world requires sufficiently large production of hot metal. Inspite of alternative methods of iron making 94.1 wt % iron is still being produced by blast furnace route only. Blast furnace technology has been developed step by step from primitive blast furnace to modern blast furnace from 14th century till date. During last five decades several important technological changes have taken place to make blast furnace technology eco-friendly, energy efficient and cost effective, increasing its productivity significantly .A characteristic feature of the development of blast furnace technology during last two decades is the increase in its overall productivity to an average of approx. 2.5 t/m3/day and reduce the coke consumption significantly. The objective of the paper is to discuss major technological developments in the blast furnace technology namely higher oxygen enrichment from about 21 to 30%, lower hot blast temperature from about 1200 to 800°C, pulverized coal injections within the tuyeres and raceway of the blast furnace upto 250 kg/THM, better burden distribution and the recent technology for the top charging devices and the technology improvement to create high top pressure like Gimble top device. Further possible improvements in blast furnace technology are lower temperature blast enriched with high oxygen, probability of eliminating hot blast stoves and significant use of top gas.
Authors and Affiliations
Piyush Anghan, Akshay Bhadiyadra, Rahul Kathiriya
Keywords
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- EP ID EP390979
- DOI 10.9790/9622-0704035762.
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