Operating method for a metallurgical plant with optimization of the operating mode

An operating method for a metallurgical plant, the plant comprising:

• at least one first plant part;
• a control unit in which a plurality of operating states (Zi) of the first plant part are stored as a concatenated or unconcatenated list;
• and
• a particular operating state (Zi) is defined by particular first operating parameters (BP1), second operating parameters (BP2), and a state condition (CON) operating state;
• the method comprising:
• operating the first plant part in a sequence of operating states (Zi) of the first plant part in succession;
• adjusting the first operating parameters (BP1) without assistance from the control unit of the first plant part;
• by the control unit of the first plant part, initially determining the particular operating state (Zi), of the first part and then controlling the first plant part according to the second operating parameters (BP2) assigned to the determined operating state (Zi);
• establishing an operating result (BE) based on operation of the first plant part according to the first and second operating parameters (BP1, BP2), and recording the operating result;
• transmitting at least the operating result (BE) from the control unit of the first plant part to a computing unit;
• by the computing unit varying the second operating parameters (BP2), but not the first operating parameters (BP1), and thereby determining varied second operating parameters (BP2′) associated with the first operating parameters (BP1);
• by the computing unit, transmitting the varied second operating parameters (BP2′) back to the control unit of the first plant part;
• and
• by the control unit of the first plant part storing the varied second operating parameters (BP2′) instead of the previously stored second operating parameters (BP) of the corresponding operating state (Zi) in the list of operating states (Zi), and the control unit using the first plant part and using the varied second operating parameters (BP2′), after the transmission of the varied second operating parameters (BP2′), when the first operating parameters (BP1) are established.