Division 33

BAT is to reduce the dust emissions in the waste gases from

• the raw materials pre-treatment, drying, grinding, wetting, mixing and the balling;

• from the induration strand; and

• from the pellet handling and screening

by using one or a combination of the following techniques:

1. I..

   an electrostatic precipitator

2. II..

   a bag filter

3. III..

   a wet scrubber

The BAT-associated emission level for dust is < 20 mg/Nm³ for the crushing, grinding and drying and < 10 – 15 mg/Nm³ for all other process steps or in cases where all waste gases are treated together, all determined as daily mean values.