Please enable JavaScript.

Coggle requires JavaScript to display documents.

Energy and exergy analyses of direct ironsmelting processes, Process…

- - - - Ouput
        
        32.4% of exergy are outputs with hot metal
      - 19.3% energy is rejected with waste materials.
  - - - Output
        
        37.4% of energy are outputs with hot metal
      - 32.7% energy is rejected with waste materials.
  - - - Relatively high portion (19.7%) of exergy is destroyed in irreversible processes of blast furnace processing.
        
        Coke combustion
        
        Heat transfer from the combustion gas (2270–2470 K) to burden (1770–
        1820 K)
        
        Formation of metal and slag solutions
        
        Blast furnace gas combustion and heat transfer in blast stoves.
        
        Mixing of oxygen with air for oxygen enriched blast, although almost no heat effect takes place.
    - - Heat transfer in the thermal reserve zone and solid-state reduction, especially in the chemically inert zone, can be characterized as processes that are more or less reversible in blast furnace ironmaking.