7 results about "Iron plant" patented technology

Disclosed is a process of utilising ferruginous laterite (14) in bauxite mining. The process may include providing a laterite source and a bauxite source (16) from a bauxite mine (12), and separating the laterite source into a first laterite fraction (24) that is enriched with a non-magnetic bauxite-like material and a second laterite fraction (22) that is iron enriched laterite. The second laterite fraction (22) may be directed to an iron refinery (44). A bauxite mine (12), Bayer plant (26), and iron refinery (44) configured to implement the process are also disclosed.

The invention discloses a plane layout system for a ferrous metallurgy plant, and relates to the technical field of plant layout, the plane layout system comprises a raw material wharf, a finished product wharf, a stock yard group, a pre-iron plant group, an iron plant, a steel plant and a rolling mill, the finished product wharf and the raw material wharf are arranged side by side, the stock yard group is adjacent to the raw material wharf, and the stock yard group comprises a coal yard, a pellet yard and a mineral yard; the pre-ironmaking plant group comprises a coking plant, a sintering plant and a pelletizing plant, the pre-ironmaking plant group is adjacent to the stock yard group, the ironmaking plant group is adjacent to the pre-ironmaking plant group, the raw material wharf, the stock yard group, the pre-ironmaking plant group and the ironmaking plant are sequentially arranged according to a first direction, the steelmaking plant is adjacent to the ironmaking plant, and the steel rolling plant is adjacent to the steelmaking plant and the finished product wharf; the iron making plant, the steel making plant, the steel rolling plant and the finished product wharf are sequentially arranged in the second direction, and the second direction is opposite to the first direction. According to the invention, the whole production process is compact, efficient and smooth in a manner of sequentially and smoothly arranging the plants according to an advanced process flow.

The application discloses an intelligent management and control system for dust removal in an iron plant environment, which comprises a fault inspection unit, an identification prompt unit, a system analysis unit, a data storage unit, a fault elimination unit and a fault alarm unit.The fault inspection unit is used for detecting the fault position of the dust removal equipment and outputting fault information.The identification prompt unit is used for identifying preset warning information.The system analysis unit is used for judging the fault time and / or service period of each component in the dust removal equipment and outputting warning information in advance.The data storage unit is used for pre-storing data information of the dust removal equipment and receiving the fault information, the warning information and the warning information.The fault elimination unit is used for calling the preset solution according to the fault information, the warning information, the warning information and the data information pre-stored in the data storage unit.The fault alarm unit is used for sending the preset alarm signal according to the fault information, the warning information, the warning information and the data information pre-stored in the data storage unit.The application solves the technical problems of imperfect function and low intelligent degree of the management and control system for the dust removal equipment in the iron plant.

The application provides application of phosphoric acid in preparation of permanent layer of ladle wall. The application also provides a permanent layer for the ladle wall and a ladle. The application particularly applies phosphoric acid as a binding agent in preparation of the permanent layer of the ladle wall, and designs a permanent layer with specific composition and proportion. The application uses phosphoric acid as a binding agent to produce a permanent layer with undefined shape, which is convenient for construction, reduces carbon emission caused by sintering, and thins the permanent layer to about 2 / 3 of the original thickness. The application solves the problem of waste of steel loading caused by the thick permanent layer, improves the corrosion resistance of the permanent layer, ensures the safety of the permanent layer, reduces carbon emission, and achieves the purpose of capacity expansion under the premise of meeting the production needs of the iron mill.

The invention discloses a control method for improving the self-opening rate of continuous casting, and relates to the technical field of iron and steel plants. S1, steel ladle pretreatment; s2, constructing a self-opening risk pre-judgment model; s3, stuffing sand is laid; s4, laying a silicon carbide covering layer; s5, converter tapping; s6, casting is started after tapping; and S7, carrying out model iteration. According to the control method for improving the continuous casting self-opening rate, the surface of the stuffing sand is accurately covered with silicon carbide, even if the tapping temperature of a converter is low, the situation that cold steel is bonded at a water gap can be greatly reduced, the smelting process does not need to be additionally adjusted, the self-opening reliability can be improved only through simple covering operation, and the operation convenience is high; after a compact protective layer is formed on the surface of the stuffing sand, direct contact between molten steel and the stuffing sand can be effectively blocked, the molten steel is prevented from rapidly dissipating heat to form a thick cold steel layer, the thickness of cold steel of a nozzle is reduced after implementation, the problem that the nozzle is blocked by the cold steel is thoroughly solved, and one-time successful self-opening and oxygen burning cleaning are not needed.

The invention discloses a nano-iron synergistic biological integration-microelectrolysis Fenton-pyrite plant bed treatment process for photoinitiator production wastewater. The process comprises the following steps: sequentially feeding the photoinitiator production wastewater into an anaerobic unit, an aerobic / anoxic synergistic biochemical unit, a microelectrolysis-Fenton oxidation unit and a plant bed deep purification unit; wherein the anaerobic unit uses a UASB reactor, nano zero-valent iron is added to enhance the conversion of refractory organic matters and improve the denitrification efficiency under the condition of low carbon-nitrogen ratio, and the microelectrolysis-Fenton unit is used for removing organophosphorus pollutants, reducing agent loss and lowering the water treatment cost per ton; the plant bed unit is additionally provided with a sulfur-iron composite filler layer to realize deep denitrification. The nano-iron synergistic biological integration-microelectrolysis Fenton-pyrite plant bed treatment process is stable in treatment and high in impact resistance, and through coupling of a functional nano-material and a biological treatment process, the biodegradability of wastewater can be remarkably improved, the requirement of an external carbon source is reduced, and stable and up-to-standard discharge of effluent is achieved.

An optimal calculation method of an energy operating condition in an iron mill includes calculating, using a total energy operation cost of the iron mill within a predetermined period of time from a current time as an evaluation function, an operation condition of an energy facility in the iron mill as a decision variable such that a value of the evaluation function decreases, at each predetermined time within the predetermined period of time, based on actual values and estimated values of a generation amount and a used amount of energy utility for each of factories comprised in the iron mill. The method includes a step of calculating the decision variable by imposing an equality constraint such that the decision variable related to a power generation facility included in the energy facility is constant within a predetermined aggregation time.