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Table A3: Furnace type and air pollution control for ferrous metal production

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Foundary size

Type of furnace

Air pollution control

Induction

Arc

Resistance

Cupola

Oil/gas-fired crucible

Other

L5

Y

         

Bag filter

M3

Y

         

None

M4

Y

Y

       

Bag filter

M6

Y

Y

       

Bagfilter - arc
None - induction

M7

Y

         

None

M8

Y

         

Bag filter - ferrous

SM1

Y

         

None

SM2

         

Unknown

 

SM3

Y
Y

Y

       

Bag filter - arc
Bag filter - induction

SM6

           

Ducted hood - crucible

SM9

Y

         

None

SM12

     

Y

   

Water scrubber

SM13

Y

         

None

SM14

 

Y

       

None

SM15

Y

         

None

SM18

Y

Y

       

Bag filter - arc
Induction - none

S1

Y

         

None

S7

Y

         

None

S8

             

S9

     

Y

   

Water scrubber

S11

Y

         

Afterburner

S16

Y

 

Y

 

Y

 

Bag filter

S24

Y

         

None

S27

Y

     

Y

   

S36

       

Y

 

None

S37

Y

         

None

S48

       

Y

 

None

Total

20

5

1

2

4

1

11