46 results about "Liquid iron" patented technology

The utility model relates to the technical field of fluid impurity separation, and provides a movable liquid de-ironing separator, which comprises a movable trolley, an iron removal device and an iron removal device, and a handle component is arranged on one side of the movable trolley; rollers are arranged at the bottom of the moving trolley; the tank body is fixedly arranged on the mobile vehicle; the bottom of the tank body is connected with a liquid inlet pipe; a tank body cover is arranged at the top of the tank body, and a liquid outlet pipe communicated with the tank body is arranged on the tank body cover; a plurality of magnetic rods extending into the tank body are further arranged on the tank body cover; a pipe support is further fixedly arranged on the moving trolley. And the liquid inlet pipe is fixed on the pipe bracket. The handle assembly comprises two longitudinal supporting beams fixedly arranged on the moving trolley. The tops of the two longitudinal supporting beams are connected with a transverse supporting beam. Therefore, the tank body is fixed on the mobile vehicle, so that the iron remover can be conveniently moved to an operation station. And the length of the pipeline is reduced, and the cost is reduced. According to the iron removal device, the positions can be conveniently switched at different stations, and the efficiency of iron removal operation is improved.

This invention proposes a device for recovering and utilizing the sensible heat of iron slag, comprising a collection chamber, a slag pot, a tilting machine, a chute, a cold air jet assembly, a first gravity dust collector, and a waste heat boiler. The tilting machine drives the slag pot to tilt sideways, injecting liquid iron slag into the chute. The outlet of the chute extends into the collection chamber, and the outlet of the cold air jet assembly is located below the chute outlet. The air inlet of the first gravity dust collector is connected to the exhaust port at the top of the collection chamber via a pipeline, and the exhaust port of the first gravity dust collector is connected to the air inlet of the waste heat boiler. This invention, through the cooperation of the cold air jet assembly and the chute, rapidly granulates and cools the liquid iron slag and recovers its sensible heat, significantly improving the sensible heat recovery rate of the liquid iron slag. The first gravity dust collector effectively removes dust generated during the iron slag cooling process, protecting the waste heat boiler. The waste heat boiler converts the recovered sensible heat into high-temperature, high-pressure steam, achieving efficient energy utilization and reducing the overall energy consumption of steel production.

The invention belongs to the technical field of blast furnace ironmaking, and particularly discloses a large-scale hydrogen-rich carbon cycle oxygen blast furnace low-carbon metallurgy method which comprises the following steps: firstly, sequentially loading a main raw material, an auxiliary raw material and a main fuel into a blast furnace; then oxygen is input from the lower part of the blast furnace, and CO + H2 is generated after the oxygen combustion-supporting main fuel is ignited; at the moment, auxiliary fuel is input from the bottom, CO + H2 is also generated after the auxiliary fuel is supported by oxygen, after the generated CO + H2 reacts with the main raw material and the auxiliary raw material at the input end of the furnace top, iron oxide is reduced into qualified elemental iron, the qualified elemental iron is heated to be in a liquid state, other components are melted to become furnace slag, and the qualified liquid iron and the furnace slag are discharged from an iron notch. In order to solve the problem that the utilization rate of chemical energy of carbon is low at present, low-carbon metallurgy is achieved through a fuel and raw material input technology, an all-oxygen smelting technology, a metallurgical gas efficient low-cost CO2 removal technology, a gas heating furnace high-reduction potential gas safe heating technology, a high-temperature gas + pure oxygen + pulverized coal composite injection and hydrogen-rich metallurgy technology and a process control technology.

The application relates to the technical field of refractory materials, in particular to an aluminum-carbon brick for refining ladle walls and a preparation process thereof, which comprises tabular corundum aggregates, alpha-type alumina micropowder, flaky graphite, oxide composite powder, silicon carbide-based composite powder, lanthanum-hafnium composite oxide nanometer powder, aluminum powder, carbon black and thermosetting phenolic resin. The oxide composite powder accelerates the reduction reaction of ferrous oxide on the surface of the brick body, so that the ferrous oxide is rapidly consumed by carbon in a very shallow layer on the contact surface of the brick, and the penetration of the ferrous oxide into the interior of the brick body is prevented; the silicon carbide-based composite powder fixes the liquid iron obtained by surface reduction in situ, so that the liquid iron cannot freely flow and contact the refining slag again; the lanthanum-hafnium composite oxide nanometer powder strengthens the structural stability, and the obtained brick body can better meet the use requirements of long-term high-strength service of the refining ladle walls.

The application provides a method for smelting ultra-low sulfur steel with low iron water consumption, comprising: converter smelting: adding iron water and scrap steel into a converter for converter smelting to obtain molten steel and ladle top slag; converter tapping: transferring the molten steel and the ladle top slag from the converter, adding lime, alloy, aluminum block and modifier into the transferred molten steel and the ladle top slag to obtain pretreated molten steel and ladle top slag; ladle refining: transferring the pretreated molten steel and the ladle top slag into a refining furnace, adding scrap steel and recovered ladle slag, and performing refining to obtain refined molten steel; RH vacuum treatment: performing vacuum treatment on the refined molten steel to obtain molten steel to be cast; and continuous casting: casting the molten steel to be cast through a slab continuous casting machine to obtain ultra-low sulfur steel. The molten iron does not need to be pretreated, and the ultra-low sulfur steel can be obtained under the condition that the iron water consumption is 680 kg-830 kg per ton of steel, the mass percentage of sulfur is less than or equal to 0.0015%, the production efficiency and quality are improved, and the environmental protection benefit is improved.

The application discloses a kind of hydraulic system oil liquid iron content detection device and detection method, it is related to hydraulic system detection technical field, including protective shell, elastic film, detection circuit and magnetic block;The side of the protective shell is equipped with rectangular through-hole, the elastic film is covered and is arranged in rectangular through-hole, the magnetic block is arranged in the inside of protective shell, and the magnetic block is located the inside of elastic film;The detection circuit includes two conductive wires, connecting conductive sheet, power supply, resistance and indicator light;Two the conductive wires are respectively connected with the positive and negative levels of power supply, and the end of two the conductive wires is respectively located the two sides of elastic film;The iron powder particles can be absorbed on the outer surface of elastic film by the magnetic block, due to the adsorption force of the magnetic block to the iron powder particles, will make elastic film deform to the inside and push displacement connecting conductive sheet, further make detection circuit disconnect, can obtain that the iron powder particles in oil liquid are excessive, otherwise, the iron powder particles in oil liquid are not excessive.

The present invention provides a lead-iron ore phase separation method based on an iron-lead mixed liquor iron alum method iron removal process, comprising the steps of: S1, providing an iron-lead mixed liquor, wherein the pH value of the iron-lead mixed liquor is 0-1.4; S2, adding a neutralizing agent to the iron-lead mixed liquor, adjusting the pH value of the iron-lead mixed liquor to 1.6-2.1, and obtaining a first pretreatment liquid; S3, adding a sparingly soluble potassium salt or a sparingly soluble sodium salt to the iron-lead mixed liquor, and obtaining a second pretreatment liquid; S4, heat-treating the second pretreatment liquid under stirring conditions, and obtaining a final treatment liquid; the final treatment liquid contains iron alum residue, wherein the iron alum residue comprises ferroalloy crystals and sparingly soluble lead substances, and the ferroalloy crystals and the sparingly soluble lead substances are in a mutually independent physical mixed state; wherein, before the second pretreatment liquid is subjected to the heat treatment, sulfate ions are provided to the second pretreatment liquid.

The utility model discloses a plasma atomization mechanism for iron-silicon-aluminum alloy powder. The plasma atomization mechanism comprises a working box, a water tank and a cooling box, a funnel is arranged at the top of the working box, a discharging pipe is connected to the bottom of the funnel, and a first valve is connected to the surface of the discharging pipe; the water tank is arranged on one side of the top of the working box; a motor drives a rotating shaft, a supporting column and a cleaning plate to rotate, spherical powder stuck to the bottom of the cooling box is cleaned through the cleaning plate, and the situation that the spherical powder is stuck to the bottom of the cooling box is avoided; the atomized water source flows into the atomizing spray head through the connecting pipe and is sprayed out from the atomizing spray head, so that the liquid Fe-Si-Al is gradually cooled and is continuously cooled and shrunk into spherical powder; and cooling liquid in the storage box is sucked into the condensation pipe through the water pump, so that after the spherical powder enters the cooling box, the spherical powder in the cooling box is cooled again through the condensation pipe.

The invention relates to a method for controlling iron transfer through high-iron feed liquid extraction, and overcomes the defects in the prior art. Comprising the following steps: 1) carrying out multi-stage parallel extraction by using an extraction device, and conveying raffinate to a storage yard through a reflux pipeline for cyclic utilization; 2) arranging a washing water circulating tank and a washing water circulating pump to construct a washing-grade water phase circulating system, keeping the total volume V washing water of washing water circulation to be greater than or equal to V organic phase, and adjusting the opening degree of a washing water-grade reflux valve according to the feedback value of the online conductivity meter to control the continuous water phase in the washing mixing chamber; (3) establishing a double-circulation discharging system of the electro-barren liquor and the washing water, and keeping the iron concentration of the electro-barren liquor, the copper concentration of the washing water and the acid concentration in a certain range by adjusting the discharging flow; and 4) arranging a steady flow plate and an inclined overflow baffle in the organic phase tank to implement standing dehydration of the organic phase, and conveying the water phase to an extraction clarification tank through a centrifugal pump. The chemical extraction amount of the organic phase to iron during extraction is reduced; the washing of the washing water on the organic phase is enhanced; and the washing effect of washing water is improved.

The invention belongs to the technical field of steel and iron manufacturing, and particularly relates to an austenite nodular cast iron molten iron residue filtering device which comprises a supporting frame. An injection pipe is mounted at the top of the support frame; a buffer tank is mounted at the bottom of the injection pipe, and the injection pipe is communicated with the interior of the buffer tank; the inner wall of the injection pipe is fixedly connected with a flow guide plate; the side, fixedly connected with the inner wall of the injection pipe, of the flow guide plate is higher than the side, not fixedly connected with the inner wall of the injection pipe, of the flow guide plate; a flow guide pipe is installed on one side of the buffer tank, the side, close to the buffer tank, of the flow guide pipe is higher than the side, away from the buffer tank, of the flow guide pipe, and through cooperation of a flow guide plate and the buffer tank, molten iron injected from the flow guide pipe can be buffered in time and then is drained into the filter tank through the flow guide pipe; therefore, the molten iron can be in full contact with the ceramic filter screen, impurities in the molten iron can be adsorbed and filtered by the ceramic filter screen, and the quality of a final casting is guaranteed.

The invention relates to the technical field of manufacturing of engine parts, and discloses a centrifugal casting process of an engine cylinder liner, which comprises the following steps: S1, pouring molten iron into a centrifugal mold rotating at a high speed, optimizing the centrifugal rotating speed to assist feeding, and meanwhile, carrying out segmented cooling on the mold to enable the cooling speed of the outer wall of the mold to be 40-80 DEG C / s, the inner wall cooling speed is 30-60 DEG C / s; and S2, during pouring, the included angle between the outlet of the chute and the inner wall of the mold is 35-40 degrees. Appropriate centrifugal pressure is provided through an optimized centrifugal rotating speed formula, feeding is assisted, a sectional cooling strategy of external cooling and internal heat preservation is combined, the solidification sequence is forcibly changed, one-way solidification from outside to inside is formed, the loose defect caused by unsmooth feeding is removed and compressed into an extremely-thin area, inevitably machined in the follow-up process, and therefore the machining efficiency is improved. The loose area is limited from the source and directly removed through machining, and faults caused by risk concentration of the loose defect are avoided.

The application belongs to the technical field of alloy target materials, and discloses a low-oxygen-content iron-chromium-aluminum alloy powder, a target material, and a preparation method of the powder and the target material. The preparation method of the low-oxygen-content iron-chromium-aluminum alloy powder comprises the following steps: step 1: liquid iron, chromium, and aluminum are sequentially subjected to gas-water combined atomization granulation, drying, and screening to obtain iron powder A, chromium powder A, and aluminum powder A; step 2: the iron powder A, the chromium powder A, and the aluminum powder A are sequentially subjected to ball milling and centrifugal separation in an inert gas atmosphere to obtain iron powder B, chromium powder B, and aluminum powder B; and step 3: the iron powder B, the chromium powder B, and the aluminum powder B are mixed in an inert gas atmosphere to obtain the low-oxygen-content iron-chromium-aluminum alloy powder. In the gas-water combined atomization granulation of step 1, the gas used for gas atomization is an inert gas, and the liquid used for water atomization is a mixed liquid of water and a micro-etching agent. The iron powder A, the chromium powder A, and the aluminum powder A are added with isopropyl alcohol or acetone for ball milling in an inert gas atmosphere.

The application provides a dephosphorization spraying device for stainless steel molten iron pretreatment, which comprises a base, a linear module, a gantry, a lifting mechanism, a spraying mechanism, a cooling mechanism and a splash-proof slag scraping mechanism, wherein the lifting mechanism is arranged on the gantry; the spraying mechanism comprises a pipe body, a conveying assembly and a spray head assembly, wherein the pipe body is connected with the lifting mechanism; the conveying assembly is connected with the upper end of the pipe body; the spray head assembly is rotationally connected with the lower end of the pipe body; the cooling mechanism comprises a first cooling assembly and a second cooling assembly, wherein the first cooling assembly is arranged in the pipe body; the second cooling assembly is arranged in the spray head assembly; and the splash-proof slag scraping mechanism is arranged outside the pipe body. The dephosphorization spraying device for stainless steel molten iron pretreatment can automatically rotate the spray head assembly during spraying, can uniformly diffuse the powder and can enhance the stirring effect of the molten iron, so that the reaction is more sufficient and the dephosphorization efficiency is improved.

The application discloses a production method of medical antibacterial cold-rolled sheet, which comprises the following steps: sequentially processing liquid iron through a liquid iron dephosphorization process, a TSR furnace full-liquid iron smelting, LF refining, continuous casting, heating furnace heating, hot rolling and coiling processes to obtain a steel coil; and sequentially performing cold rolling, annealing and pickling and on-line flattening on the steel coil to obtain the medical antibacterial cold-rolled sheet. The medical antibacterial cold-rolled sheet has good processing performance, the thickness of the steel can be reduced, and the comprehensive cost can be saved by more than 30%. The process can not be carried out through a bell-type annealing, and after the hot rolling, the high-temperature coiling and the slow cooling pit heat preservation can be directly utilized for the antibacterial heat treatment process of the high-temperature self-timing of the steel strip, so that the antibacterial heat treatment process after the hot-rolled product is taken off line is reduced, the production process is shortened, and the production cost is reduced.

The utility model relates to the field of plating assistant liquid purification treatment, and discloses a multifunctional plating assistant liquid deironing device which comprises a storage tank and a quantitative feeding mechanism, a controller is fixedly arranged at the front end of the storage tank, a feeding port is fixedly formed in the position, close to the edge, of the upper end of the storage tank, and the quantitative feeding mechanism comprises a fixing box. A partition plate is fixedly arranged at the position, close to the upper end, of the inner side of the fixing box, a second motor is fixedly arranged on one side of the fixing box, the side, close to the second motor, of the outer side of the output end of the second motor is fixedly sleeved with a first material limiting roller, and the side, away from the second motor, of the outer side of the output end of the second motor is fixedly sleeved with a second material limiting roller; and a plurality of material distributing grooves are formed in the outer ends of the first material limiting roller and the second material limiting roller. According to the device, distribution is carried out through the material distribution grooves of the first material limiting roller and the second material limiting roller, after the second motor is started, plating assisting liquid and hydrogen peroxide can be automatically and quantitatively fed, and it is ensured that the dosage added every time is standard and consistent.

The application discloses a molten scrap iron liquid component regulator, which comprises 5-15% of low-cost silicon-aluminum-calcium-carbon alloy, 50-60% of crystalline silicon cutting tertiary sand, 10-20% of carbonaceous material, 2-5% of organic fiber, 15-25% of passivated lime and 1-3% of binding agent in percentage by weight; and a preparation method and application thereof are provided. Through the introduction of the low-cost silicon-aluminum-calcium-carbon alloy, the alloying element dissolution supplement in the liquid iron is realized, the chemical heat of the liquid iron into the furnace is improved, the enrichment of harmful elements and difficult-to-remove residual elements is reduced, the deep desulfurization of the Ca alloy element in the liquid iron is realized, the stability of sulfides in the desulfurization slag is improved, and the resulfurization in the converter is inhibited; through the molten scrap iron liquid component regulator and the application method, the online component regulation after the desulfurization and slagging of the molten scrap iron liquid is realized, and through the full-amount addition of the liquid surface regulator of the liquid iron in the liquid iron tank, the heat supplement and temperature rise of the regulator in the converter are realized.

This invention provides a hydrogen-rich reduction-high-temperature plasma hydrogen melting ironmaking method, relating to the field of hydrogen metallurgy. The method is a two-stage molten reduction ironmaking method coupling a hydrogen-rich direct reduction shaft furnace and a high-temperature plasma hydrogen melting furnace. Iron-containing raw materials, coke, and flux are added to the top of the hydrogen-based direct reduction shaft furnace, while hydrogen-rich gas is injected into the furnace body for heating. After reduction, metallized iron is obtained, and dry gas and dust are produced at the top. High-temperature plasma hydrogen gas is injected into the tuyeres of the high-temperature plasma hydrogen melting furnace, and coke and semi-coke are added to the top. The metallized iron is finally reduced and melted in the plasma hydrogen melting furnace to obtain qualified molten iron and slag. This invention is simple and easy to operate, with low carbon emissions, low pollutant emissions, and high efficiency. Compared with the traditional direct reduction method, it has higher heat utilization and higher sponge iron metallization rate; the plasma torch heating does not use carbon-containing fuels and has higher heating efficiency.

The application provides a high-temperature liquid ferroalloy continuous granulation forming process and belongs to the technical field of granulation forming of ore smelting furnaces, solves the problem that the traditional large ingot mold casting process seriously restricts the development of the industry, and the application comprises a ladle, a holding furnace, a first-stage water-cooling rolling way, a second-stage rolling forming rolling way, a third-stage self-cooling rolling way, a fourth-stage spiral rolling way, a spraying water-cooling system, a first-stage air-cooling drying system, a second-stage dehydration drying system, a third-stage air-cooling drying system, an intermediate storage bin, a finished product storage bin, a finished product packaging system; the high-temperature liquid ferroalloy is shaped after temperature adjustment in the holding furnace and is preliminarily cooled after length cutting; the high-temperature liquid ferroalloy forms a semi-solid alloy, the semi-solid alloy is sequentially subjected to shape strengthening in the second-stage rolling forming rolling way to form alloy particles; the alloy particles are cooled and dried and finally sent out. The application realizes integrated production from high-temperature metal liquid to solid qualified products and improves the finished product rate of products.

This invention discloses a method, system, and application for secondary energy recovery and utilization in steel plants and hydrogen metallurgy. The method includes: obtaining by-product coal gas from the steel plant, separating reducing gases, and introducing them into a hydrogen-based shaft furnace to produce sponge iron; the reducing gases include a first decarburization gas, a second decarburization gas, a third decarburization and denitrification gas, and hydrogen, or, include the first decarburization gas, the third decarburization and denitrification gas, and hydrogen; the first decarburization gas is obtained by decarburizing FINEX coal gas, the second decarburization gas is obtained by decarburizing converter gas, the third decarburization and denitrification gas is obtained by decarburizing and denitrifying the top coal gas of the hydrogen-based shaft furnace, and the hydrogen is obtained by hydrogen extraction from coke oven gas; the coke oven gas is further hydrogenated to obtain a fourth desorbed gas, which is injected into the blast furnace for low-carbon smelting to produce molten iron. This invention is of great significance for utilizing secondary energy from steel plants, reducing primary energy consumption in hydrogen-based shaft furnaces, and reducing carbon emissions from blast furnaces.

The invention discloses a method for eliminating the edge accumulation of vanadium-titanium ore in blast furnace smelting. Aiming at the edge accumulation of furnace caused by TiC, TiN and their solid solution with high melting point and high viscosity formed when smelting vanadium-titanium ore in blast furnace, scrap steel is added into blast furnace alone or mixed with coke. When distributing, scrap steel or its mixture with coke is only distributed on the edge of furnace throat, and its distribution angle is less than or equal to the angle at which the iron-containing raw material collides with the furnace wall when a certain material line is used, and the difference with the angle is not more than 1.5°; the amount of scrap steel added is 80-100% of the theoretical TFe weight of each batch of iron-containing furnace charge when no scrap steel is added; the frequency of adding scrap steel is determined according to actual production conditions. Through the reasonable action of scrap steel, the dripping of liquid iron water on the furnace wall of blast furnace is improved to achieve the effect of flushing edge accumulation, and the technical problem of edge accumulation when smelting high-titanium vanadium-titanium ore in blast furnace is solved; thereby ensuring the stable and smooth operation of furnace conditions and improving the smelting efficiency of modern blast furnaces.

The invention relates to the technical field of blast furnace ironmaking safety production, in particular to a liquid high-temperature slag iron out-of-control control method based on emergency diversion. Comprising the following steps that flow guiding devices are arranged at the connecting position of a blast furnace main runner and an iron runner and the connecting position of a slag runner and a dry slag pit in advance respectively, and the flow guiding devices are kept normally open in the normal iron tapping state, so that liquid slag iron can flow along a normal path. And when the liquid iron slag flows out of control, the flow guide devices at the two positions are triggered to be closed at the same time. And through the closed flow guide device, the liquid slag iron is blocked from flowing to the original path of the flow guide device, and is guided into the dry slag pit. And the flow direction of the liquid slag iron can be quickly, safely and effectively controlled, so that loss caused by out-of-control accidents is fundamentally avoided or reduced.

Additive for the thermochemical treatment of molten iron in order to separate, distribute, agglomerate, precipitate, spheroidize and / or crystallize combined, solvated and / or colloidal carbon present in molten iron in the liquid state into graphite in its hexagonal diamond or Lonsdaleite form, in order to produce ductile, nodular, spheroidal, vermicular, coral, spheroidized or grey iron with superior mechanical properties, iron with high metal yield and zero contraction during casting; the additive comprises two or more elements in the metallic state selected from the S-block of periods 2 to 7 of the periodic table of elements; and two or more elements in the metallic state selected from F-block of periods 6 to 7 of the periodic table of elements. The additive makes it possible to produce cast iron parts with Type I and II spheroidal graphite in hexagonal diamond or Lonsdaleite form as per the ASTM-A247 standard.

A device and a method for continuous desulphurisation of liquid iron provided by a blast furnace process or a direct reduction process. The device including a desulphurisation reactor or a plurality of consecutive desulphurisation reactors. The desulphurisation reactor or reactors each include an entry section for receiving liquid iron from liquid iron production means or from the desulphurisation reactor immediately preceding the subsequent desulphurisation reactor, and a reaction section for removing the sulphur from the liquid iron.

The invention provides a high-temperature liquid iron alloy continuous granulation forming process, belongs to the technical field of submerged arc furnace metallurgy granulation forming, and solves the problem that a traditional large ingot mold casting process seriously restricts industry development. The production line comprises a ladle, a heat preservation furnace, a first-stage water cooling roller path, a second-stage rounding and forming roller path, a third-stage self-cooling roller path, a fourth-stage spiral roller path, a spraying water cooling system, a first-stage air cooling and drying system, a second-stage dewatering and drying system, a third-stage air cooling and drying system, a middle storage bin, a finished product storage bin and a finished product packaging system. The high-temperature liquid iron alloy is shaped after being subjected to temperature adjustment in a heat preservation furnace, and preliminary cooling is performed after length cutting; the high-temperature liquid iron alloy forms a semi-solid alloy, and the semi-solid alloy sequentially passes through the two-stage rounding forming roller paths to be subjected to form strengthening to form alloy particles; and cooling and drying the alloy particles, and finally sending out. According to the invention, integrated production from high-temperature molten metal to solid qualified products is realized, and the yield of the products is improved.

To provide a method for producing molten iron with which the molten iron is produced at high yield by melting reduced iron.SOLUTION: In a method for producing molten iron, in an electric furnace for discharging slag from a slag discharging port arranged at the side surface of a furnace body, a carbonaceous material is added and solid reduced iron is melted with arc heating to produce molten iron. The VM content in the carbonaceous material to be added is controlled to 30 mass% or less. In the case of a fixed type electric furnace, the molten iron is tapped so as to secure a distance of 100 mm or more between the lower end of the slag discharging port and the molten iron surface. In the case of a tilting type electric furnace, the slag is removed by tilting the furnace body so as to secure a height difference of 100 mm or more between the highest position at the lower end of the slag discharging port and the molten iron surface in the state of tilting the furnace body.SELECTED DRAWING: Figure 1

A method is provided of treating liquid iron in a pour furnace includes providing the pour furnace with a body, an inlet for receiving liquid iron, an outlet for dispensing liquid iron, and an access opening located in the body and remote from the outlet. The method also includes suspending a platform over the pour furnace and in alignment with the access opening, injecting a cored wire containing nickel magnesium through the access opening into an interior of the body of the furnace, and reacting the nickel magnesium with the liquid iron in the body of the furnace. The method further includes treating the liquid iron with the magnesium to increase its ductility and strength.

The application discloses a kind of laterite nickel ore leaching liquid iron-aluminum-chromium-removed slag phase processing system, belong to laterite nickel ore slag phase processing technical field, including filtration module, refinement module, feed module and measurement module, filtration module includes suction assembly and filter component, suction assembly is used to set in the slag phase precipitation zone of multiple iron-aluminum-chromium-removing unit, and its suction port is communicated with slag phase precipitation zone, filter component is connected with the discharge port of suction assembly, filter component has a filter residue outlet and a filtrate outlet connected with multiple iron-aluminum-chromium-removing unit;Refinement module is connected with filter residue outlet;Feed module includes material pipe and material guiding driving part, material pipe has the feed end connected with the discharge port of refinement module;Measurement module is connected with material guiding driving part and circulating leaching ore slurry neutralization unit;The device can filter out the slag phase generated in time and carry out refinement treatment, and the returned filter residue is controlled, and the subsequent acid leaching dissolution efficiency of slag phase can be improved.

This invention belongs to the field of electrochemical energy storage technology, and more specifically, relates to a negative electrode electrolyte for a liquid iron flow battery. This invention addresses the issue of traditional liquid iron flow batteries using Fe as the negative electrode. 2+ / Fe 0 To address the problem of short battery life caused by active electrodes, a first, second, and third complexing agent are simultaneously coordinated and complexed onto the same iron or ferrous ion, stabilizing its structure and forming a new Fe... 3+[ Complex 123] / Fe 2+ [Complex 123] Active couple: This reaction only involves liquid-liquid phase reaction and does not involve phase transformation. It does not deposit metallic iron, which fundamentally solves the problem of short life caused by iron dendrites in the negative electrode and improves the cycle life of the battery.

The present invention relates to the technical field of metallurgy, and in particular to low-cost thick-specification high-toughness low-temperature-resistant hot-rolled H-shaped steel for a ship structure, and a preparation method for the H-shaped steel. The H-shaped steel comprises the following chemical components in percentage by weight: C: 0.05%-0.07%; Si: ≤0.25%; Mn: 1.20%-1.50%; V: 0.11%-0.15%: A1t: 0.035%-0.055%; Cr: 0.3%-0.5%; P: ≤0.015%; S: ≤0.005%; N: ≤0.010%-0.015%; O: ≤0.004%; and the balance being Fe and inevitable impurities. The preparation method comprises the following steps: pretreatment of a liquid iron, smelting in a 120 t converter, argon blowing of ladle, refining in an LF, casting of a special-shaped continuous casting blank, slow cooling of the continuous casting blank in a slow cooling pit, heating by a heating furnace, rough rolling by a BD, a steel turning operation of an intermediate billet, reversible rolling by a TM during finish rolling, inter-rack cooling, water cooling of rolled flanges in a phase change area, dense slow cooling on a cooling bed, straightening by a straightening machine, and a finishing treatment of a finished product. According to the present invention, high-toughness hot-rolled H-shaped steel having stable performance and having a 420 MPa grade or above is obtained on a universal hot-rolled H-shaped steel rolling mill.

The invention discloses a molten iron spheroidizing process and equipment, and relates to the technical field of spheroidizing, and the molten iron spheroidizing process comprises the following steps: S1, filling molten iron into a first accommodating area; adding a magnesium-series spheroidizing agent into the second accommodating area; s2, a first sealing cover is buckled to the opening; s3, the pressure in the cavity is adjusted to be larger than the saturated vapor pressure of magnesium in the magnesium nodulizer in the second containing area; s4, enabling the molten iron to be in contact with a magnesium-series spheroidizing agent; after the cavity is sealed, the molten iron is in contact with the magnesium nodulizer, so that the problem that the cost of spheroidizing treatment is increased due to overflow of magnesium from the cavity after vaporization is reduced; when the pressure in the cavity is adjusted to be greater than the saturated vapor pressure of magnesium in the magnesium-based spheroidizing agent in the second accommodating area, the vaporization probability of the magnesium in the magnesium-based spheroidizing agent is reduced; the molten iron can be fully mixed with magnesium in the magnesium-series spheroidizing agent through the stirring assembly, and the high speed of the spheroidizing reaction of the molten iron and the magnesium-series spheroidizing agent is kept.