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Blast Furnace RAFT Calculator


Shaurya Seth , National Institute of Technology Karnataka Surathkal; Omkar Barwade, National Institute of Technology Karnataka Surathkal; N. N. Vishwanathan


RAFT, Raceway, Tuyeres, Hot Blast, Iron Blast Furnace, Hearth


In a blast furnace, there is a certain temperature called as Raceway Adiabatic Flame temperature (RAFT)[1] concluded as imperative for the efficient and effective functioning of the furnace by our research explained below. The RAFT is generated near the tuyeres purging hot blast, located above the hearth of the furnace. The hot blast from tuyeres gushes in at enormous velocities establishing a path for the gases to enter the coke region called a Raceway. Due to the force, some amount of coke gets entrapped in the raceway and reacts with the hot blast to form carbon monoxide which further elevates the temperature in that region, paving the way for RAFT. Our project revolved around the calculation of RAFT by controlling certain parameters and enforcing them in enthalpy balance equations. The RAFT hereby calculated was then adjusted to a certain influential temperature and the oxygen and moisture content of the blast required for the above adjustment was revealed. Furthermore, the oxygen and moisture content of the blast was chosen accordingly. The aforementioned process was executed in a calculator coded using python computer programming language.

Other Details

Paper ID: IJSRDV7I80037
Published in: Volume : 7, Issue : 8
Publication Date: 01/11/2019
Page(s): 8-10

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