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The purpose of the project reported here was to further the understanding of the internal natural of the blast furance by means of the materials science evaluation of samples obtained directly from furnaces and making comparison with simulative high temperature softening and melting tests. The main studies have been on monolithic columns from the Mannesmann N(2)-quenched blast furance, on samples from British Steel Technical's pilot blast furance trials, and from tuyere drilling and raking investigations. Much information has been gained that confirms or adds to our knowledge of the internal state of the blast furance and supports the value of simulative tests. Particular attention is given to: the general structure of the charge layers and the extent and effect of mixing of coke and ferruginous burden; the mechanism of sinter reduction degradation; the contrasted paths of metallization, softening and melting and their effect on the formation of cohesive masses; the break-up and dispersion of cohesive masses; and the state of the furance and reactions at tuyere level. In general, the work is regarded as being of general rather than specific application but attention is drawn to the possible value of mixing some coke with the ferruginous charge and of using some small sized sinter.

Additional information

Authors: GATHERGOOD D, British Steel, Teesside Technology Centre, Middlesborough (GB);JONES J, British Steel, Teesside Technology Centre, Middlesborough (GB);JUCKES L, British Steel, Teesside Technology Centre, Middlesborough (GB);GOLDING D, British Steel, Teesside Technology Centre, Middlesborough (GB)
Bibliographic Reference: EUR 15848 EN (1996 ) 41pp., FS, ECU 7.00
Availability: Available from the (2)
ISBN: ISBN 92-827-7129-6
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