Application of Heat Transfer Regularities to Control Wind Rate Among Blast Furnace Tuyeres
(Room 404)
06 May 19
2:00 PM
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2:30 PM
Uneven distribution of hot blast among the tuyeres leads to variation in raceway length, causing a difference in material descent and gas flow in various areas of furnace cross-section. A new technique is proposed for determining the blast flowrate on tuyeres, based on the usage of the wind thermal energy and the value of the heat removal from this tuyere. It is shown that, with an uneven distribution of hot blast among the tuyeres, stabilization of the raceway thermal state requires an adjustment in natural gas flow per tuyere to maintain the theoretical combustion temperatures at a given level.