Improved Ignition Oven Efficiency with Multi-Slit Burners

By improving the ignition oven efficiency, significant reductions in fuel demand can be achieved. In a Japanese application, the heat-retention oven is removed from the conventional ignition oven with a large oven capacity and an ignition oven with lower capacity is introduced, in which the inner pressure of the ignition oven is regulated by controlling each window box located immediately under the ignition oven. Moreover, a multi-slit burner which can achieve uniform ignition in the pallet width direction and rapid heating has been developed and introduced to realize a large fuel reduction. This burner consists of fuel exhaust nozzles located in the sintering floor width direction and a slit-like burner tile containing these fuel exhaust nozzles. The fuel supplied from the fuel exhaust nozzles reacts with the primary air inside the burner tile, then with the secondary air supplied to flame outer periphery area. By using the slit-like buruner tile, non-flamed places can be eliminated. By controlling the ratio between the primary air and the secondary air the length of the flame can be controlled to minimize the ignition energy (NEDO, 2008. p. 66).

Development Status Products

Improved Ignition Oven Efficiency with Multi-Slit BurnersCosts & Benefits

Parent Process: Sinter Plant
Energy Savings Potential

Ignition energy can be reduced by approximately 30% (NEDO, 2008. p.66). 

CO2 Emission Reduction Potential

Emissions were reduced due to lower energy consumption.


Improved Ignition Oven Efficiency with Multi-Slit BurnersSchematic

Improved Ignition Oven Efficiency with Multi-Slit Burners Publications

Global Warming Countermeasures: Japanese Technologies for Energy Savings / GHG Emissions Reduction

This revised 2008 version of the publication from New Energy and Industrial Technology Development of Japan includes information on innovative Japanese technologies for energy efficiency and for the reduction of COemissions.  

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