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Specifications |
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| COMPLETE STEEL PLANT STEELMAKING SHOP Capacity : 600,000 t/y of stainless steel The main equipment is: - 2 electrical furnaces with alternative current - a 65 to 70 t A2 furnace (1962) driven by a 50 MVA furnace transformer with a primary voltage of 20 000 volts - a 45 t A3 furnace (1974) driven by a 43 MVA furnace transformer with a primary voltage of 20 000 volts . Hydraulic electrodes regulation driven by TAGLIAFERRI valves and EMPERE regulation (SPIE TRINDEL 1998/2002). Furnaces process are controlled by centralized supervision and by camera monitoring . Each furnace is equipped with a 3.5 MW door burner MORE and a BARATEC oxygen lance with a 15 to 20 Nm3/Mn flow rate. They are supplied by clam scraps baskets loaded by a 200 t direct current 460 V travelling crane Three transfer ladles are used to transfer the crude liquid steel from the furnaces to a 130 t AOD. - 1 AOD Capacity : 130 t of steel and 15 to 20 t of slag. The AOD is equipped with a 100 Nm3/mn flow rate oxygen lance . A KUTTNER system equipped with 24 weighing hoppers supply the AOD in ferro-alloys and scrap . The AOD is controlled by a centralised supervision system SETCIM (revamped in 1993) and by video cameras through industrial programmable automates. Ladle metallurgy For this operation after AOD taping : The mixing is done by gas through porous plugs . The temperature is automatically taken. AFFIVAL machines allow the injection of wire feeding and aluminium . There is no equipment for heating 1 Continuous casting CLECIM (1983) Curve machine : radius 10.75 m Slab thickness : 160 to 190 mm (possible extension to 200 mm) Slab width : 750 to 1600 mm Possible length : 5.9 to 14.5 m | |
