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Iron & Steel

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Rotary drum furnace

Process description

Tiltable (TTRF = Tilt Type Rotary Furnace) or stationary rotary drum ovens of various types are used for economic reasons and the high operating flexibility of the process. The transfer of heat in the rotary furnace mainly takes place through the rotating furnace wall which is immersed in the melt, and heated directly by the burner flame. An O2 flame is particularly suitable for this purpose.

TTRF = Tilt Type Rotary Furnace

In the case of stationary rotary furnaces, the metal and slag is removed via spouts. With tiltable rotary furnaces the entire furnace is lifted hydraulically and metal and slag is tapped at the feed opening.

The required energy input is carried out with burner systems such as Oxyfuel.

Advantages of Oxipyr burner systems at a glance:

  • Higher combustion efficiency
  • Higher melting rate
  • Faster heating-up times
  • Lower fuel consumption
  • Higher processing temperatures possible
  • Faster reaction speeds
  • Lower exhaust gas levels
  • Less dust
  • Lower emissions
  • Lower production costs

Gas Application

Oxygen combustion

Carrying out combustion with oxygen instead of air as an oxidising agent, reduces fuel consumption and increases the economic efficiency of the process.

Messer-solution

In addition to the gases required for your process, Messer offers a variety of equipment for its optimisation under the brand names Oxipyr and Oxijet. 

In order to select the optimum system, experts from Messer first carry out a comprehensive process analysis. Following calculations and basic engineering, suggestions are made for optimisation and further procedures.

Oxipyr-F Burner

Oxipyr – Burner Technology

The characteristics of the burner types are multi-faceted and range from low to high momentum burners, oxyfuel to oxygen/air mixing burners and burners for different fuels or fuel combinations. The systems are controlled manually, semi- or fully automatically following compositions or temperature.

Oxipyr

Fuel

  

Burner protection

Flame

Burner Technology

gas

liquid

solid

low NOx

refractory material l

traversing devices

cooling

monitoring

ignition

Oxipyr – P

X

 

 

 

X

X

X

X

X

Oxipyr – F

X

X

X

X

X

X

X

X

X

Oxipyr – Flex

X

X

X

X

X

X

X

X

X

Oxipyr – Air

X

X

X

X

X

X

X

X

X

Oxipyr – SVNR

X

X

X

X

X

X

 

X

X

 

Oxipyr- IPC (Internal Post-Combustion)

Messer developed the Oxial process to make fuel savings and reduce the post-combustion burden. Alternative caloric materials from recycling are used as alternative fuels.  Both oxygen and fuel requirements, as well as the rotational speed of the drum are regulated via the temperature. Depending on the type of furnace, additional oxygen lances may be required for the burner system.  

Advantages:

  • Lower consumption of conventional fuels
  • Use of cheaper alternative fuels
  • Reduces post-combustion burden
  • Recovery of caloric residues
  • Savings in waste-disposal costs
  • Lowering of production costs