Division 64

BAT is to reduce dust emissions from the blast furnace gas by using one or a combination of the following techniques:

1. I..

   using dry prededusting devices such as:

   1. (i)

      deflectors

   2. (ii)

      dust catchers

   3. (iii)

      cyclones

   4. (iv)

      electrostatic precipitators.

2. II..

   subsequent dust abatement such as:

   1. (i)

      hurdle-type scrubbers

   2. (ii)

      venturi scrubbers

   3. (iii)

      annular gap scrubbers

   4. (iv)

      wet electrostatic precipitators

   5. (v)

      disintegrators.

For cleaned blast furnace (BF) gas, the residual dust concentration associated with BAT is < 10 mg/Nm³, determined as the average over the sampling period (discontinuous measurement, spot samples for at least half an hour).