The present invention concerns a process and a configuration for producing steel, whereby iron ore oxide material (5) is reduced with a reducing agent (H) in a direct reduction facility (7). The reducing agent (H) is produced by electrolysis of water by means of an electrolysis unit (17).

The electric energy necessary for the electrolysis comprises re-generative energy, which is derived from hydropower and/or wind power and/or photovoltaic or other re-generative energy forms (2). The intermediate product (RM) is produced independently of the current demand, if sufficient reducing agent is available.

An iron ore oxide material (5) holding thermal energy is charged into the direct reduction facility (7). The thermal energy originates from an iron ore oxide material provider device, such as an iron ore oxide material production unit (3) or a pre-heating apparatus (4).

The reducing agent (H) reacts with the iron ore oxide material (5) for reducing the iron ore oxide material (5) into the intermediate product (RM) by utilizing the thermal energy of the iron ore oxide material (5).

Provided is a multi-scale test device for crystallization performance of high-temperature melts, including a furnace body, an atmosphere control system, an optical path system, a temperature control system and a control display system. The furnace body includes furnace body includes a cavity, a thermocouple wire, a hot wire fixing block, a hot wire welding electrode, a reflecting surface, an air inlet pipe and an air outlet pipe. The thermocouple wire, the hot wire fixing block, the hot wire welding electrode and the reflecting surface are located in the cavity, the air inlet pipe and the air outlet pipe are in communication with the cavity. The thermocouple wire is connected with the hot wire welding electrode to form a heating wire structure onto which a sample is placed, and a center of the heating wire structure is located directly above the reflecting surface.

Provided are a joint regulation method of material flow, energy flow, and carbon emission flow in a long-process steel enterprise, which belongs to a field of intelligent regulation and control technology of electric power system in the steel industry. The method includes: coupling a material-energy characteristic model of each production process of a steel enterprise and a carbon emission model of the steel enterprise, constructing a material flow-energy flow-carbon emission flow coupling model of the long-process steel enterprise, establishing an objective function using a minimize sum of an electricity purchase cost from a superior grid, a park carbon emission cost, and a production raw material cost as an object, and solving and obtaining an optimal operation mode of a joint regulation of the material flow-energy flow-carbon emission flow in the steel enterprise.

An arrangement for producing sponge iron, including a direct reduction shaft, a device for charging iron ore into the direct reduction shaft, a device for extracting sponge iron from the direction reduction shaft, a hydrogen-rich reduction gas source, a reduction gas line extending from the hydrogen-rich reduction gas source to the direct reduction shaft, and a heater for heating the hydrogen-rich reduction gas in the reduction gas line. The arrangement further includes a flow rate meter configured to measure the flow rate of the hydrogen-rich reduction gas in the reduction gas line, and a control unit configured to control the device for charging iron ore into the direct reduction shaft and to control the device for extracting sponge iron from the direct reduction shaft based on input from the flow rate meter, such that the flow rate of the iron ore and the flow rate of the sponge iron are proportional to the measured flow rate of the hydrogen-rich reduction gas.

The present invention relates to a metal material production configuration (1) and to a method of direct reduction of a metal oxide material (5) holding a first thermal energy into a reduced metal material (16). The method comprises the steps of charging the metal oxide material (5) holding the first thermal energy into a direct reduction facility (7) via a metal oxide material charging inlet device (A), introducing a pre-heated hydrogen containing reducing agent (H), holding a second thermal energy, into the direct reduction facility (7) via a reducing agent inlet device (B).

The metal oxide material (5) id direct reduced by using the first thermal energy of the metal oxide material (5) to heat or further heat the introduced pre-heated hydrogen containing reducing agent (H) for providing a chemical reaction between the introduced pre-heated hydrogen containing reducing agent (H) and the metal oxide material (5); exposing the reduced metal material to a required heat treatment temperature for providing heat treatment of the reduced metal material to obtain a densified reduced metal material; and upholding the required heat treatment temperature by the introduction of the pre-heated hydrogen containing reducing agent (H) by means of a heat treatment providing device (17).

The present invention concerns a metal material production configuration (1) and a method of direct reduction of a metal oxide material (5) holding a first thermal energy into a direct reduced metal material (16) by means of a metal material production configuration (1).

The method comprises charging the metal oxide material (5), holding the first thermal energy, into a direct reduction facility (7); introducing a hydrogen, holding a second thermal energy, into the direct reduction facility (7).

The invention involves reducing the metal oxide material (5) by using the first thermal energy of the metal oxide material (5) to heat or further heat the introduced hydrogen containing reducing agent (8) toward a required reaction temperature for providing a chemical reaction. A high-temperature exit gas (12) is removed from the direct reduction facility and fed to a high-temperature electrolysis unit (21) configured to produce the hydrogen.

A production method of pig iron using a blast furnace with a tuyere includes: charging a first layer containing an iron ore material and a second layer containing coke alternately in the blast furnace; and reducing and melting the iron ore material in the charged first layer while injecting an auxiliary reductant into the blast furnace by hot air blown from the tuyere, in which: an aggregate for letting through the hot air to a central portion of the blast furnace is blended into the first layer; and the aggregate contains a reduced iron molded product obtained through compression molding of reduced iron.

A method for detecting a fluctuation of a solidified layer, and a method for operating a blast furnace by employing the relevant method. In the method for detecting a fluctuation of a solidified layer, the fluctuation of the solidified layer in the lower part of a blast furnace is detected by using the amount of heat supplied to pig iron in the lower part of the blast furnace and the amount of heat in the pig iron tapped in a predetermined period.

Provided are a joint regulation method of material flow, energy flow, and carbon emission flow in a long-process steel enterprise, which belongs to a field of intelligent regulation and control technology of electric power system in the steel industry. The method includes: coupling a material-energy characteristic model of each production process of a steel enterprise and a carbon emission model of the steel enterprise, constructing a material flow-energy flow-carbon emission flow coupling model of the long-process steel enterprise, establishing an objective function using a minimize sum of an electricity purchase cost from a superior grid, a park carbon emission cost, and a production raw material cost as an object, and solving and obtaining an optimal operation mode of a joint regulation of the material flow-energy flow-carbon emission flow in the steel enterprise.

The present application discloses a multi-scale coordinated control method of an integrated energy system for green hydrogen metallurgy, and belongs to the field of energy system control technology. A detailed analysis is performed on various flexible and adjustable resources in the integrated energy system for green hydrogen metallurgy, and the regulation characteristics of these resources at different timescales are summarized. The cross-link regulation characteristics of these resources in multi-energy and mass interactions are then explored, with particular attention paid to the time-delay phenomenon in the transmission and conversion process of multi-energy and mass. An equivalent modeling method for heterogeneous links is proposed to provide support for the multi-link coordinated control of the system. Finally, the influence of different production tasks on the multi-energy and mass flow allocation is studied, and the dynamic association of different production processes on the multi-energy and mass flow allocation is analyzed.