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1st International Meeting on Ironmaking — vol. 1, num.1 (2001)
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On the long march to the effective control of the iron blast furnace, what has to be done in the last mile, i.e., the investigations of deadman/hearth, is outlined from the point of view of the author. Experimental work through dissections, tuyere level probing and sampling, and radioactive tracers study of the deadman, etc., is reviewed. The heterogeneity of the coke bed in the deadman, the physical barriers to fluid flow, and the mechanisms of its formation are discussed. The DCI index and its applications at Port Kembla for monitoring the state of the deadman are assessed. In conclusion, research topics in three areas are recommended: (1) computations of mass and heat balances for deadman/hearth under assumed conditions to establish the relative importance of tuyere practice, raw materials quality, burden distribution, chemical reactions, tapping practice, etc., for the state of this region; (2) continuous monitoring of hot metal temperature and frequent sampling during a cast to investigate the state of deadman/hearth and other operating conditions along the same line of the DCI index; (3) new tests of iron ore and coke for their performance in deadman/hearth, which is at the top of the supply chains of materials inside the furnace.
On the long march to the effective control of the iron blast furnace, what has to be done in the last mile, i.e., the investigations of deadman/hearth, is outlined from the point of view of the author. Experimental work through dissections, tuyere level probing and sampling, and radioactive tracers study of the deadman, etc., is reviewed. The heterogeneity of the coke bed in the deadman, the physical barriers to fluid flow, and the mechanisms of its formation are discussed. The DCI index and its applications at Port Kembla for monitoring the state of the deadman are assessed. In conclusion, research topics in three areas are recommended: (1) computations of mass and heat balances for deadman/hearth under assumed conditions to establish the relative importance of tuyere practice, raw materials quality, burden distribution, chemical reactions, tapping practice, etc., for the state of this region; (2) continuous monitoring of hot metal temperature and frequent sampling during a cast to investigate the state of deadman/hearth and other operating conditions along the same line of the DCI index; (3) new tests of iron ore and coke for their performance in deadman/hearth, which is at the top of the supply chains of materials inside the furnace.
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Lu, W.K..
Blast Furnace Efficiency and Supply Chains
,
p. 569-598.
In: 1st International Meeting on Ironmaking,
Belo Horizonte - MG, Brasil,
2001.
ISSN: -
, DOI 10.5151/ABM-IRONMAKING-2001-2001241
