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SIDEWALL INJECTION SYSTEM UPGRADE AT DUFERDOFIN - NUCOR (ITALY). - MORE | Innovation in Steelmaking

SIDEWALL INJECTION SYSTEM UPGRADE AT DUFERDOFIN - NUCOR (ITALY). - MORE | Innovation in Steelmaking: Duferdofin-Nucor, located at San Zeno Naviglio (BS-ITALY) successfully started operations with  MORE injection system on their 100t (110 st) EAF. Duferdofin-Nucor is the result of a strategic alliance between two of the most important iron and steel global players, Duferco Group and Nucor Corporation. Today, Duferdofin-Nucor is an outstanding benchmark for production of beams and long products in Italy, Europe and North Africa. To improve the EAF performances,  at the beginning of 2016, Duferdofin-Nucor awarded MORE for the supply of a new set of M-ONE sidewall injectors (for the combined oxygen and carbon injection), one OXYGENJET (for the supersonic oxygen injection) for EBT sump panel installation as well as a brand new pneumatic lime injection system which included: one 200 m3 (7060 ft3) storage silo, one MOLI dispenser (3000 liters/ 792 gal) for the pneumatic lime  injection from the storage silo to the EAF and one LIMEJET injector, installed on the EBT sump panel, nearby the OXYGENJET.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            M-ONE injectors are installed into CNC copper bulged blocks and the front panels are equipped with FLASH STOP system to avoid damages caused by back fires Excellent results have been achieved in a very short time. Thanks to the availability of better injection tools, EAF operations have improved both in terms of productivity and overall process control decreasing electric energy usage from 380 kwh/t to 375 kWh/t and reducing power-on time down to 33 min . Moreover, there has been a dramatic increase of injected solid material and now foaming slag is more stable, repeatable, with a quick and more efficient dephosphorization. Thanks to the precise MOLI transportation air flow control system, lime is able to be transferred to the LIMEJET injector from the main silo installed more than 140 m (460 ft) away from the EAF. Prior the installation of MOLI dispenser, 100% of dololime was charged into the buckets with cranes so now the pneumatic lime injection is generating a much cleaner shop environment. Main EAF data: Furnace type EAF EBT (TENOVA) Nominal Steel Capacity       100 t / 110 st Holding Capacity             110 t / 121 st Shell diameter 6,2 m / 20.3 ft Transformer 100 MVA Charge mix 100% scrap – 2/3 buckets Hot heel 15 t / 16.5 st . Steelmaking, Innovation, chemical energy, auxiliary equipment, water cooled elements, Electric Arc Furnace

 

SIDEWALL INJECTION SYSTEM UPGRADE AT DUFERDOFIN - NUCOR (ITALY).

15.11.2016

Duferdofin-Nucor, located at San Zeno Naviglio (BS-ITALY) successfully started operations with  MORE injection system on their 100t (110 st) EAF.

Duferdofin-Nucor is the result of a strategic alliance between two of the most important iron and steel global players, Duferco Group and Nucor Corporation. Today, Duferdofin-Nucor is an outstanding benchmark for production of beams and long products in Italy, Europe and North Africa.

To improve the EAF performances,  at the beginning of 2016, Duferdofin-Nucor awarded MORE for the supply of a new set of M-ONE sidewall injectors (for the combined oxygen and carbon injection), one OXYGENJET (for the supersonic oxygen injection) for EBT sump panel installation as well as a brand new pneumatic lime injection system which included: one 200 m3 (7060 ft3) storage silo, one MOLI dispenser (3000 liters/ 792 gal) for the pneumatic lime  injection from the storage silo to the EAF and one LIMEJET injector, installed on the EBT sump panel, nearby the OXYGENJET.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           

M-ONE injectors are installed into CNC copper bulged blocks and the front panels are equipped with FLASH STOP system to avoid damages caused by back fires

Excellent results have been achieved in a very short time. Thanks to the availability of better injection tools, EAF operations have improved both in terms of productivity and overall process control decreasing electric energy usage from 380 kwh/t to 375 kWh/t and reducing power-on time down to 33 min . Moreover, there has been a dramatic increase of injected solid material and now foaming slag is more stable, repeatable, with a quick and more efficient dephosphorization. Thanks to the precise MOLI transportation air flow control system, lime is able to be transferred to the LIMEJET injector from the main silo installed more than 140 m (460 ft) away from the EAF.

Prior the installation of MOLI dispenser, 100% of dololime was charged into the buckets with cranes so now the pneumatic lime injection is generating a much cleaner shop environment.

Main EAF data:

Furnace type

EAF EBT (TENOVA)

Nominal Steel Capacity

      100 t / 110 st

Holding Capacity            

110 t / 121 st

Shell diameter

6,2 m / 20.3 ft

Transformer

100 MVA

Charge mix

100% scrap – 2/3 buckets

Hot heel

15 t / 16.5 st