Abstract: The invention relates to the production of direct reduced iron, DRI, where a hydrogen direct reduction is synergistically operated in the context of an industrial plant. The hydrogen reduction operates with reducing gas comprising at least 85 vol. % hydrogen, and receives a make-up hydrogen stream. At least part of the make-up hydrogen stream is produced on site. by at least one of (i) electrolysis means configured to produce hydrogen from steam recovered from one or more components of the industrial plant and/or from steam generated using waste heat and/or hot gases emitted by the one or more components; and (ii) gas shift reactor means configured to convert CO-bearing gas emitted by at least one component of the industrial plant into hydrogen and to remove CO2.

Abstract: A cooling box for a metallurgical furnace including an elongated hollow body extending from a front end, to an opposite rear end, the rear end being, in use, connected to a wall of the furnace; the body includes an inner chamber having a cooling circuit configured to receive a flow of coolant fluid therein between at least one inlet and at least one outlet; the cooling box further including at least one partition plate fitted in the inner chamber through a form-fit connection to form the cooling circuit.

Abstract: A device and method for measuring the thickness of a cooling plate are related. The device is designed to fit inside a coolant channel of the cooling plate and includes a probe holder housing having a front sensor side and an opposite back side, in which an ultrasonic probe is arranged. A flexible cord is linked to the probe housing to assist the progression of the probe holder through the length of the coolant channel. The probe holder includes an expandable structure having front and rear levers articulated on the housing at opposite ends wherein spring elements are arranged to bias the levers towards one another. The expandable structure is configured to expand from a compact configuration to an expanded configuration, designed to bear against the inner surface of the coolant channel and bias the sensor side of the sensor housing against the inner surface of the coolant channel.

Abstract: A cooling box for a metallurgical furnace including an elongated hollow body extending from a front end, to an opposite rear end, the rear end being, in use, connected to a wall of the furnace; the body includes an inner chamber having a cooling circuit configured to receive a flow of coolant fluid therein between at least one inlet and at least one outlet; the cooling box further including at least one partition plate fitted in the inner chamber through a form-fit connection to form the cooling circuit.