Method for tapping a steel making furnace

A method for tapping of steel from a steelmaking furnace to a receiving vessel comprising the steps of:

• a. providing a steelmaking furnace comprising a tapping hole, means for sensing the level of the molten steel and slag above the tapping hole, and means for angular positioning of the furnace to vary the depth of molten steel and slag contained in the furnace above the tapping hole;
• b. determining a guidance profile for the tapping of the furnace, the guidance profile including the parameters of minimum tapping angle, maximum tapping angle, and time of rotation from the minimum tapping angle to the maximum tapping angle, the time of rotation being not more than 90 percent of the total time necessary to complete the tapping of the furnace;
• c. performing an initial angular rotation of the furnace from an initial position to the minimum tapping angle;
• d. sensing the level of the molten steel and slag above the tapping hole and determining if the level is within acceptable limits;
• e. beginning the transfer of molten steel from the furnace through the tapping hole to a receiving vessel;
• f. rotating the furnace to the maximum tapping angle in accordance with the guidance profile;
• and
• g. ceasing the flow of molten steel through the tapping hole.

A method for tapping of steel from a steelmaking furnace to a receiving vessel comprising the steps of:

• a. providing a steelmaking furnace comprising a tapping hole, and means for angular positioning of the furnace to vary the depth of molten steel and slag contained in the furnace above the tapping hole;
• b. determining a guidance profile for the tapping of the furnace, the guidance profile including the parameters of minimum tapping angle, maximum tapping angle, time of rotation from the minimum tapping angle to the maximum tapping angle, the duration of time of the previous tapping with the furnace, and the difference in time between the two previous tappings with the furnace, the time of rotation being not more than 90 percent of the total time necessary to complete the tapping of the furnace;
• c. performing an initial angular rotation of the furnace from an initial position to the minimum tapping angle;
• d. beginning the transfer of molten steel from the furnace through the tapping hole to a receiving vessel;
• e. rotating the furnace to the maximum tapping angle in accordance with the guidance profile;
• and
• f. ceasing the flow of molten steel through the tapping hole.