PreventSecDust – Reduction of dust emissions in the furnace

Initial situation:

• Due to the wide range of material transports, the preparation of the fluff is one of the largest dust sources in the blast furnace.
• Important knowledge about secondary emissions is missing.
• The legal requirements regarding the emissions of dust (especially fine dust) are becoming ever more severe.

Working topics:

• Examination of existing and development of new methods for dust suppression in laboratory and operational investigations
• Development and testing of spraying equipment
• Selection of suitable additives for dust binding
• Investigation of the effects of blasting on the blast furnace process
• CFD and DEM simulations to optimize transfer stations

Results:

• Findings on the mechanisms of secondary emission
• Improved design of transfer devices
• Devices for continuous dust monitoring and control of the spraying devices
• Guidelines for the selection and application of liquid dust binders