Nozzle zone operation
Blast furnace – Operational principles

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Nozzle zone operation
Blast furnace – Operational principles

Author : Jean-Marc STEILER

Review date: June 23, 2021 | Lire en français

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2. Nozzle zone operation

2.1 Nozzle zone definition

The general morphology of the tuyere zone is well known from blast furnace dips and tuyere borings ([M 7 400], figures 8 to 10). At the nose of each tuyere, two strongly interacting phenomena take place: on the one hand, the combustion of coke and injected fuels, and on the other, the formation of a cavity in the coke mass resulting from the kinetic energy of the wind coming from the tuyere.

The energy required for the blast furnace is generated almost...

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