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Further development in blast furnace injection

Funded under: FP5-GROWTH


The project has four broad objectives:

-To undertake fundamental coal combustion studies at high injection levels and to establish the form of the un-combusted coal chars and their interaction with the reduction, melting and slag formation processes in the blast furnace. The aims were: to investigate the de-volatilisation and combustion characteristics of a wide range of pulverised and granular grade coals under laboratory-simulated blast furnace conditions; to quantify and characterise the un-burnt coal chars by trials on a coke combustion rig, raceway test rig, and from blast furnace core drilling and sampling of stack gases; and, finally, to provide data for the modelling of coal combustion in the raceway.

-To establish the critical raceway conditions at coal injection levels up to 250 kg/thm and the overall furnace control requirements which are secure and optimal for high coal injection practice.

-The use of very high coal injection levels calls for higher oxygen usage at the furnace, imposing greater demands on the engineering and special material integrity of the blowpipes and injection facilities. The performance of such special materials has to be established for safe working practices to be maintained.

-To investigate the effect of fluxes and ore fines injection in association with coal and oxygen, on the blast furnace process, especially hot metal composition, and on furnace performance. The aim here was to examine the increase in flexibility potential of the blast furnace process in terms of raw material and fuel usage. usage.

Additional information

Authors: No authors provided, British Steel, Middlesbrough (UK);No authors provided, AHV, Baracaldo (ES);No authors provided, CRM, Liege (BE);No authors provided, CSIC, Madrid (ES);No authors provided, CSM, Rome (IT);No authors provided, Ensidesa Aviles (ES);No authors provided, Thyssen, Duisburg (DE)
Bibliographic Reference: EUR 19481 EN (2001), pp.343. Euro: 51.00
Availability: Available by EUR-OP sales agent
ISBN: ISBN: 92-894-1227-5
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