1147 results about "Vanadium" patented technology

The invention discloses a multi-parameter coupling intelligent regulation and control method and system in a vanadium ore smelting process, relates to the technical field of non-ferrous metal smelting automatic control, and solves the problems of feeding deviation and resource chain scission caused by slow response of an existing heat balance model to ore impurity fluctuation, online sensing lag and process island. The impurity concentration and the dielectric constant are obtained in real time through an LIBS / XRF combined probe and a microwave dielectric spectrum, rheological disturbance is dynamically corrected through extended Kalman filtering, a dynamic coupling response model is input, a thermodynamic interference factor is calculated, and a leaching and precipitation strategy is generated; performing mother liquor tail gas material flow collaborative optimization in parallel, constructing a multi-dimensional control vector U, performing iterative updating through near-end strategy optimization in a digital twin and issuing the multi-dimensional control vector U to an edge PLC (Programmable Logic Controller) in a distributed manner, and finally correcting a model weight through online XRD (X-Ray Diffraction) feedback; according to the method, the adaptive capacity to complex vanadium ore component disturbance, the response precision of online control and the inter-process resource circulation efficiency are remarkably improved.

The invention discloses a method for preparing a carbon monoxide oxidation catalyst by using a waste vanadium-titanium catalyst and electroplating sludge, which realizes the mutual reaction of metal components in the electroplating sludge and components in the waste vanadium-titanium catalyst through the synergistic effect of various physical and chemical treatment methods and additives in the whole preparation process. The complex multi-metal catalyst can be used for photo-catalytic oxidation of carbon monoxide, has a remarkable oxidation effect and has a good application prospect.

The invention relates to the technical field of data analysis, in particular to a multi-source data-based concealed vanadium titano-magnetite bed target area delineation method and system, which comprehensively considers various factors possibly influencing drilling, such as geological condition complexity and drill bit wear risk, and has relatively low potential risks in various aspects of trajectory selection. The probability of unexpected conditions such as drill bit damage and borehole wall collapse in the drilling process can be effectively reduced, smooth drilling work is guaranteed, the drilling effect abnormity prediction result and the difficulty abnormity reflect the advantages and disadvantages of the drilling track from different angles, and the drilling efficiency is improved. The drilling effect anomaly prediction considers the influence of various abnormal conditions possibly occurring in the drilling process on the final drilling result, the difficulty anomaly focuses on the drilling difficulty of the trajectory, the two are fused and analyzed, the feasibility and the risk degree of each trajectory are evaluated more comprehensively and accurately, and the prediction accuracy is improved. And the influence degree of the track drilling process on ore deposit target area detection is reduced.

The invention belongs to the technical field of steel smelting, and particularly discloses a comprehensive utilization method of vanadium titano-magnetite, which comprises the following steps: S1, preparing the vanadium titano-magnetite into pellets, and carrying out reduction reaction to obtain direct reduced iron; s2, a carbonaceous reducing agent and the direct reduced iron obtained in the step S1 are mixed and smelted in a melt separation electric furnace, and slag and molten iron are obtained; a slag former is not added in the smelting process, the purity of the titanium slag is improved through optimal design of the furnace profile of the melting electric furnace and combination of various smelting process control means, the problems that refractory materials of the melting electric furnace are excessively eroded, the service life is short, slag-metal separation is difficult, smelting is difficult to control and the like are solved, and the purposes of high-grade titanium slag and long service life of the melting electric furnace are achieved.

The invention discloses an injection molding high-density alloy steel sintering integrated preparation process, which comprises the steps of alloy raw material proportioning, feed preparation, injection molding, continuous thermal desorption sintering treatment and enhanced heat treatment, and comprises the following steps: selecting gas atomization pure iron powder subjected to vacuum reduction treatment, and matching with chromium, nickel, molybdenum, vanadium, carbon, silicon, manganese and iron powder multi-component alloy proportioning; a phenolic resin-polyformaldehyde composite binder is adopted, 0.5-1.5% of a lubricating additive is added, internal mixing parameters are controlled under the protection of inert gas according to the powder-to-rubber ratio of 72-77%: 23-28%, and the problem that the compatibility of a single binder and alloy powder is poor is solved; three-section gradient temperature control injection molding and a continuous atmosphere furnace sectional degreasing-sintering integrated process are combined, and strengthening heat treatment is matched, so that sufficient diffusion of elements and densification of a green body are realized, and defects are avoided. The technology effectively solves the technical problems that traditional raw materials are high in impurity content and insufficient in element diffusion, and therefore the alloy steel sintering preparation efficiency can be improved.

The invention provides an impurity removal method of a gallium-rich solution for a gallium-based fluorescent powder precursor, and belongs to the field of preparation of gallium-based fluorescent powder precursors. The method comprises the following steps: adding an oxidizing agent into an initial gallium-rich solution to carry out a first reaction so as to remove organic impurities in the initial gallium-rich solution and obtain a first gallium-rich solution; adding a composite impurity removal reagent into the first gallium-rich solution to carry out a second reaction to remove impurity elements such as calcium, silicon and vanadium in the first gallium-rich solution so as to obtain a second gallium-rich solution; and adding a sulfide type reagent into the second gallium-rich solution to carry out a third reaction so as to remove copper and iron impurity elements in the second gallium-rich solution, thereby obtaining the gallium-rich solution for the gallium-based fluorescent powder precursor. According to the method, various key impurity elements such as organic matters, alkaline earth metals, metalloids and heavy metals are directionally and efficiently removed through the impurity removal logic of oxidation impurity breaking, synergistic precipitation and deep vulcanization, so that the total content of the key impurity elements in the gallium-rich solution is remarkably reduced.

The invention relates to a preparation method of bainite steel with high toughness and strength at low temperature, and the strength and toughness of the bainite steel at low temperature are improved by designing process parameters and steel ingot components. The bainite steel with high toughness and strength at low temperature is finally obtained by designing the components of the steel ingot, avoiding the addition of elements such as nickel, molybdenum and vanadium, reducing the material cost and the processing difficulty and accurately controlling the cooling rate of heat treatment. The prepared bainite steel is composed of strip-shaped bainite and thin strip-shaped retained austenite, and the volume fraction of the retained austenite is 5-10%. The tensile strength is not lower than 1240 MPa, the normal-temperature impact is not lower than 120 J, and the impact toughness at-40 DEG C is not lower than 80 J.

The invention relates to the technical field of metallurgy, and provides a method and system for preparing a spongy TC4 alloy raw material, and the method comprises the following steps: heating and mechanically stirring titanium tetrachloride, aluminum trichloride and vanadium tetrachloride according to a component proportion required for preparing a TC4 alloy to form a uniform chloride mixture; the chloride mixture is subjected to a reduction distillation reaction in the presence of magnesium, and inert gas is continuously introduced in the reaction process for stirring; and after the reaction is completed, separating the byproduct magnesium chloride to obtain the spongy TC4 alloy raw material. According to the scheme, use of high-cost metal raw materials is avoided from the source, meanwhile, the complex steps of electrode preparation and repeated smelting are omitted through the one-step reduction distillation reaction, and energy consumption and time cost are greatly reduced.

A preparation method for high-nitrogen austenitic stainless steel. The high-nitrogen austenitic stainless steel comprises the following chemical components in percentages by weight: carbon: ≤0.02%; silicon: 0.4-0.8%; manganese: 10.2-12.5%; chromium: 24.5-26.5%; nickel: 13.5-16.5%; molybdenum: 3.2-4.8%; nitrogen: 0.75-0.95%; phosphorus: ≤0.03%; sulfur: ≤0.0025%; vanadium: 0.016-0.022%; niobium: 0.026-0.034%; copper: 0.2-0.35%; aluminum: 0.01-0.02%; cerium: 0.015-0.025%; and the balance of iron and inevitable impurities. The preparation method comprises the steps of raw material charging, vacuum melting, refining, nitrogen-added alloying, deoxidation and desulfurization, casting, electroslag remelting, and secondary casting. The preparation is implemented by using the processes of smelting in a pressurized induction furnace and electroslag remelting under a protective atmosphere; and nitrogen is added by using a method in which a nitrogen alloy and pressurized nitrogen permeation are combined.

The invention discloses a copper-based catalyst for catalyzing partial hydrogenation of nitrocyclohexane to prepare cyclohexanone-oxime as well as a preparation method and application of the copper-based catalyst. The catalyst comprises a main active component and an auxiliary active component, the main active component is copper, the auxiliary active component is selected from one or more of titanium, vanadium, chromium, molybdenum, zirconium, cadmium, indium, tin, antimony, niobium, silver, iron, zinc, magnesium, aluminum, bismuth, manganese, lanthanum, gold or lead, the total molar ratio of the copper to the auxiliary active component is (100-1): 1, and the catalyst is prepared by adopting a coprecipitation method or a supported impregnation-coprecipitation method. And the process is simple and green. Under mild conditions, the catalyst can realize the conversion rate gt of nitrocyclohexane; the selectivity of cyclohexanone-oxime is greater than or equal to 99%, and the method is obviously superior to the existing non-noble metal system, and is low in cost, good in stability and suitable for industrial production of green synthesis of caprolactam.

The present application provides a kind of method for extracting metal gallium by vanadium extraction converter sludge, comprising the following steps: S1: vanadium extraction converter sludge is leached with leaching agent, and gallium leaching solution is obtained;S2: the gallium leaching solution of step S1 is extracted, and gallium-containing organic phase is obtained;S3: the gallium-containing organic phase of step S2 is back-extracted, and gallium-containing aqueous phase is obtained;S4: the gallium-containing aqueous phase of step S3 is treated to obtain gallium-containing precipitate, and the gallium-containing precipitate is dissolved in alkali to obtain gallium-containing alkali solution, which is treated by electrolysis to obtain metal gallium.The raw material for extracting gallium is unique, the gallium content is high, the gallium extraction process is short, the impurity removal effect is good, and the by-product produced has higher purity and better economic value.

The invention discloses a preparation method of a high-quality solid welding wire. The preparation method comprises the following steps of S1, raw material selection and pretreatment, S2, a drawing forming process, S3, surface treatment, S4, aftertreatment and finishing, S5, quality detection and control and S6, packaging and storage. Before work starts, raw materials are selected, low-carbon steel is selected, the purity of S is controlled to be smaller than or equal to 0.010%, the purity of P is controlled to be smaller than or equal to 0.015%, the size is controlled to be phi 5.5-6.5 mm, then oxide skin is removed through sulfuric acid for 5-10 min, after flushing is conducted through high-pressure water, residual acid is neutralized through alkali liquor, corrosion is prevented, then hot air drying is conducted at the temperature of 100-120 DEG C, it is guaranteed that no water exists on the surface, and the low-carbon steel is obtained. According to the method, the raw materials are pretreated, so that the cleanliness of the raw materials is improved, the production quality of the thick solid welding wire is improved, then the raw materials are smelted after being pretreated, and then a mixture of rare earth, deoxidized silicon, alloy vanadium and copper phosphorus tungsten carbide is added according to different environment requirements so as to increase the variety of the welding wire.

The invention discloses high-performance bridge steel and a production method thereof, and belongs to the technical field of ferrous metallurgy. The bridge steel comprises the following chemical components in percentage by mass: 0.09%-0.11% of carbon; silicon: less than or equal to 0.55%; 1.4%-1.6% of manganese; less than or equal to 0.018% of phosphorus; sulfur: < = 0.005%; 0.15% to 0.20% of niobium; less than or equal to 0.08% of vanadium; 0.006% to 0.03% of titanium; 0.01 to 0.02 percent of chromium; 0.01% or less of nickel; less than or equal to 0.3% of copper; 0.01% to 0.045% of aluminum; less than or equal to 0.3% of molybdenum; not more than 0.008% of nitrogen; and the balance of iron and inevitable impurities. According to the high-performance bridge steel and the production method thereof, by optimizing the component design and the production process, production of the bridge steel with high strength, low yield ratio, high toughness and good welding performance can be achieved.

The invention discloses a reconfigurable intelligent metasurface device with switchable transmission and reflection polarization conversion based on deep learning and a design method, and belongs to the technical field of multifunctional metasurface devices and computers. The device comprises a top metal resonator, a middle dielectric layer and a bottom functional layer containing a vanadium dioxide phase change material. The phase state of VO2 is changed through external excitation, dynamic switching of the device between a transmission polarization conversion working mode and a reflection polarization conversion working mode can be achieved, and the problem that an existing device is single in function is solved. The design method comprises the steps that a forward prediction network embedded with physical mechanism constraints is constructed, a loss function of the forward prediction network comprises data loss and physical loss based on a polarization conversion rate physical formula, and the physical consistency of prediction is improved; and constructing a reverse design network based on bidirectional LSTM and CBAM attention mechanisms, and rapidly solving device structure parameters according to the target spectrum. According to the invention, full-space multifunctional regulation and control of the device are realized, and the design efficiency and reliability are remarkably improved.

The invention discloses a metallurgical solid waste all-component collaborative recovery and high-value utilization method, and belongs to the technical field of metallurgical resource recycling and green metallurgy. According to the method, blast furnace gas sludge, iron-manganese slag and vanadium extraction converter sludge are synergistically blended, and after briquetting and drying, reduction smelting is carried out in an inert atmosphere. Reducing the iron into molten iron; volatile metals such as zinc, indium and gallium are evaporated and enter flue gas, and gallium-indium alloy, crude zinc and residual ash are recovered in a graded manner through a multi-stage condensation system; the slag is subjected to acid leaching to enrich scandium, the leaching liquid is separated to extract vanadium, manganese and scandium, and the leaching slag is used for preparing low-carbon cement. According to the method, all-component collaborative recovery of valuable metals in various metallurgical solid wastes and building material utilization of residual solid wastes are realized, and the method has the advantages of high resource efficiency and environmental friendliness.

The invention provides an oblique coil electromagnetic classificator for separating weak magnetic impurities from strong magnetic concentrate, which comprises a separation cylinder, an ore feeding device and a flushing device, an ore feeding pipe of the ore feeding device extends into the separation cylinder from the top end of the separation cylinder, the flushing device is arranged below the ore feeding pipe, and an oblique coil is arranged on the outer side of the separation cylinder, so that the weak magnetic impurities can be separated from the strong magnetic concentrate. Magnetic lines of force are obliquely distributed, magnetic linkages formed by magnetic particles are oblique, the whole magnetic linkages can be efficiently impacted in cooperation with vertical component force Fz of water flow of the flushing device, and scattering of magnetic aggregates is facilitated; the tail control flat coil and the concentrate gathering flat coil at the upper end and the lower end effectively control tailings and concentrates respectively, so that the separation efficiency of strong magnetic concentrates and weak magnetic impurities is improved, for example, in the iron-titanium separation operation of vanadium titano-magnetite ore dressing, ilmenite mixed into iron ore concentrates can be reduced, the grade of the iron ore concentrates can be improved, and titanium metal resources can be fully recycled.

The invention discloses a method for leaching vanadium and molybdenum metal in a failure residual oil hydrogenation catalyst through electrochemical ultrasonic strengthening, the catalyst comprises, by mass, 10-70% of Al2O3, 3-25% of V, 2-15% of Mo and 1-10% of Ni, the method comprises the steps that S1, the failure residual oil hydrogenation catalyst is ground and dried and mixed with a leaching agent according to the preset liquid-solid ratio, and leaching slurry is formed; s2, adding a leaching aid into the leaching slurry, inserting at least one pair of electrode pairs, and meanwhile, applying ultrasonic waves into the leaching slurry to perform electrochemical ultrasonic enhanced leaching; and S3, solid-liquid separation is conducted on the leaching slurry obtained after intensified leaching is completed, and vanadium and molybdenum enriched leaching liquid and leaching residues are obtained. According to the method, an electrochemical field, an ultrasonic field and a leaching aid are synergistically acted on the leaching process of the spent catalyst, so that efficient leaching and recovery of vanadium and molybdenum metals are realized at low temperature and normal pressure, and the technical problems of low leaching efficiency, high energy consumption and serious pollution in the traditional process are solved.

The invention relates to the field of hydrometallurgy, and discloses a method for converting hafnium oxalate feed liquid into hafnium oxychloride feed liquid, which is characterized by comprising the following steps: adding an HCl solution and an oxidizing agent into the hafnium oxalate feed liquid, and reacting at a certain temperature to obtain a hafnium oxychloride solution. The method has the advantages of simple operation, no introduction of any metal impurity ions, small reagent consumption, low energy consumption, low cost, high efficiency, no physical state change, and realization of continuous production. The method for adding the HCl solution and the oxidizing agent into the oxalate feed liquid is also suitable for converting oxalate solutions of other metal ions into chloride solutions, including but not limited to zirconium oxalate, titanium oxalate, thorium oxalate, scandium oxalate, niobium oxalate, tantalum oxalate, vanadium oxalate, cobalt oxalate, cesium oxalate and rubidium oxalate.

The invention belongs to the technical field of inorganic nano materials and electro-catalysis, and particularly relates to a cobalt-based spinel oxide nano material as well as a preparation method and application thereof. The cobalt-based spinel oxide nano material comprises a conductive substrate and cobalt-based spinel oxide grown on the surface of the conductive substrate, the molecular formula of the cobalt-based spinel oxide is MxCo1-xO4, and M is transition metal or P-region metal and is selected from one or more of titanium, vanadium, chromium, manganese, iron, nickel, aluminum, cerium and neodymium. Multiple metal elements are doped into a cobaltosic oxide lattice, and the intrinsic structure of spinel is not changed by metal doping. Multiple metal elements are highly uniformly dispersed in the material, so that active sites are comprehensively regulated and controlled, the material shows excellent thermodynamic and chemical stability under harsh conditions of high temperature, large current, concentrated alkali and the like, is suitable for various electrolysis modes, has no metal dissolution risk in long-term operation, can effectively avoid the problems of membrane poisoning and membrane degradation, and has good application prospects. Wide application prospects are shown.

The invention relates to the technical field of preparation of nano aluminum oxide, in particular to a preparation method of high-purity nano aluminum oxide, which comprises the following steps: dissolving aluminum ammonium sulfate in high-temperature hot water, filtering, recrystallizing, drying the recrystallized aluminum ammonium sulfate to remove moisture to obtain dried aluminum ammonium sulfate, and roasting the dried aluminum ammonium sulfate at high temperature to obtain the high-purity nano aluminum oxide. The preparation method comprises the following steps: calcining the alumina powder, decomposing to generate alpha-Al2O3 nano-alumina, simultaneously releasing ammonia gas and sulfur dioxide gas, introducing the ammonia gas and sulfur dioxide released in the roasting process into water through a negative pressure absorption device to generate an ammonium sulfate solution, and finally obtaining the superfine alumina powder with the particle size reaching the nanoscale. According to the method, the market value of the product is improved, ammonia gas and sulfur dioxide generated in the roasting process are absorbed to successfully generate a byproduct ammonium sulfate, and the byproduct ammonium sulfate is reused in a catalyst wet vanadium precipitation process, so that the environmental pollution is reduced, the output quality of aluminum oxide is improved, and the production loss caused by impurities is reduced, thereby improving the production efficiency and economic benefits.

The invention belongs to the technical field of wastewater treatment, and particularly relates to an adsorption particle electrode for wastewater and waste liquid treatment and a preparation method thereof. The preparation method comprises the following steps: adding a zinc salt, a vanadium salt, a scandium salt and cetyltrimethylammonium bromide into water, stirring, adjusting the pH value at 70-80 DEG C, continuously stirring, filtering, drying and calcining to obtain modified mesoporous zinc oxide; and dispersing the modified mesoporous zinc oxide in water, adding the composite aerogel, soaking, filtering, washing, drying and grinding to obtain the adsorption particle electrode. The adsorption particle electrode prepared by the invention can be used for degrading printing and dyeing wastewater, and has the excellent performances of high degradation rate, high degradation speed, reusability and the like.

The utility model provides a vanadium-titanium magnetite concentrate three-section grinding separation device which comprises an ore separation box, the ore separation box is provided with a feeding end and a discharging end; the upgrading raw ore tank is connected with the feeding end; the cyclone is connected with the discharging end; the cyclone is provided with a tower mill; a feeding hole of the magnetic separator is connected with a discharging hole of the cyclone; the magnetic separator is provided with a tailing outlet and a magnetic separation outlet; the filtering machine is connected with the magnetic separation ore outlet; and the filter is provided with a concentrate outlet. Compared with the prior art, the three-section grinding and separation device for the vanadium-titanium magnetite concentrates adopts a specific structure and a connection relation, realizes better integral interaction, effectively improves the quality of the vanadium-titanium magnetite concentrates through three-section grinding and separation, ensures that the quality of the vanadium-titanium magnetite concentrates is improved and the yield is stable, continuously reduces the beneficiation production cost and the ironmaking cost, and improves the quality of the vanadium-titanium magnetite concentrates. And the requirement of an existing blast furnace on vanadium-titanium magnetite concentrate materials is met.

The invention belongs to the field of vanadium-aluminum alloy smelting. The invention discloses a preparation method of a high-density low-defect vanadium-aluminum alloy. The method comprises the following steps: crushing raw materials; drying the raw materials; aluminum is prepared according to the amount of residual aluminum in the alloy accounting for 106%-108% of the theoretical amount of aluminum participating in the oxidation-reduction reaction, and the dried raw materials are evenly mixed; the mixed materials are put into a smelting furnace, and the composite flux is flatly laid on the materials; tiling titanium powder on the composite flux; igniting the titanium powder to carry out thermit reaction on the furnace charge in the furnace; gradient extreme cooling is conducted on the alloy, and sequential solidification from bottom to top is achieved at the temperature gradient of 50-100 DEG C / h; and after solidification, disassembling the furnace, carrying out water quenching, and cooling to obtain the vanadium-aluminum alloy. According to the method, the problems of surface oxidation, internal cracking, bottom loosening and the like of the vanadium-aluminum alloy can be synchronously solved, and the compactness and quality of the vanadium-aluminum alloy are remarkably improved.

The present invention relates to the technical field of waste catalyst treatment, and discloses a waste hydrogenation catalyst treatment method, a hydrogenation catalyst, and a heavy oil and / or residual oil hydrotreatment method, the method comprises: (1) in an oxygen-containing atmosphere, carrying out carbon burning treatment on the waste hydrogenation catalyst; (2) leaching part of metal in the catalyst obtained in the step (1) by adopting an acid solution to obtain a leaching solution and a leaching residual catalyst; wherein compared with the waste hydrogenation catalyst, the leaching rate of vanadium in the leaching residual catalyst in terms of oxide is 62-94%; (3) carrying out extraction treatment on the leaching solution to obtain an extraction solution containing V < 4 + > and a raffinate; and (4) dipping the leaching residual catalyst obtained in the step (2) by adopting the raffinate, and then carrying out high-temperature activation treatment at 600-800 DEG C. The hydrogenation catalyst obtained by the treatment method is applied to the hydrotreating process of heavy oil and / or residual oil, and has relatively good demetallization performance and relatively high desulfurization activity stability.

The invention discloses modified mixed-dimension attapulgite clay, a mixed-dimension attapulgite clay-based medium and low temperature flue gas denitration catalyst as well as a preparation method and application of the modified mixed-dimension attapulgite clay-based medium and low temperature flue gas denitration catalyst. The specific surface area of the modified mixed-dimension attapulgite clay is not less than 140 m < 2 > / g, the average pore size is not less than 7.1 nm, and the ratio of Fe < 2 + > to Fe < 3 + > is 0.05-0.75. In the mixed-dimension attapulgite clay-based medium and low temperature flue gas denitration catalyst, the mass percent of the modified mixed-dimension attapulgite clay is 10-50%, the mass percent of the titanium dioxide is 37-89.9%, the mass percent of the vanadium oxide is 0.1-3%, the mass percent of the molybdenum oxide is 0-5%, and the mass percent of the tungsten oxide is 0-5%. According to the catalyst, the NO conversion rate of NH3-SCR reaction is higher than 90% within the working temperature range of 240-420 DEG C, and good industrial application prospects are shown.

The invention relates to Ni-Cu-containing high-chromium vanadium alloy cold roll steel and a preparation method thereof, and belongs to the technical field of steel preparation. The cold roll steel is prepared from the following chemical components in percentage by mass: 0.76 percent to 0.86 percent of C, 1.00 percent to 1.20 percent of Si, 0.30 percent to 0.40 percent of Mn, 4.50 percent to 5.60 percent of Cr, 1.00 percent to 1.20 percent of Mo, 0.18 percent to 0.25 percent of V, 0.20 percent to 0.35 percent of Ni, 0.15 percent to 0.25 percent of Cu, less than or equal to 0.015 percent of P, less than or equal to 0.010 percent of S and the balance of Fe and inevitable impurities. The cold roll steel prepared by optimizing alloy chemical components and adjusting heat treatment parameters effectively meets the requirements of a modern cold rolling production line, the roll body replacement cost and shutdown loss are greatly reduced, and reliable material and process guarantee is provided for quality improvement and efficiency improvement of the cold rolling industry.

The present application relates to a vanadium-iron alloy smelting slag-gold separation control method, which comprises: a. mixing and smelting vanadium-iron alloy smelting raw materials including vanadium-containing materials, reducing agents, iron materials and slag characteristic regulators, and the first mass percentage of iron materials is used in step a; b. after the vanadium-iron alloy smelting raw materials are completely melted to form a molten pool, the smelting system is maintained in a molten state by power supply until the vanadium mass fraction in the molten slag is reduced by less than a predetermined value, and then slagging is performed; c. adding the second mass percentage of iron materials to the surface of the molten pool, and continuously supplying power for a predetermined time; d. after the reaction product is cooled, the slag-gold is separated to obtain a vanadium-iron alloy and a smelting corundum slag. The present application approximates the settlement of vanadium-iron alloy molten particles in the molten slag as free settlement in an infinite fluid, and based on this theory, the influencing factors of the slag-gold separation efficiency in the aluminum thermal reduction vanadium-iron alloy smelting process are obtained, the conditions of the alloy settlement conditions are effectively improved, and the efficient separation of the molten slag-gold is promoted.

The application discloses a kind of high-temperature-resistant impact-resistant heat-absorbing heat-insulating composite ceramic brick and its preparation method and application, the ceramic composite brick includes heat-insulating layer and heat-absorbing layer;The main component of the heat-insulating layer is vacuum nanometer heat-insulating ceramic particles and alloy metal particles containing one or more of tungsten, cobalt, molybdenum or vanadium elements;The main component of the heat-absorbing layer is 3N grade and above high-purity alumina and black pigment;The components of the heat-insulating layer and the heat-absorbing layer are filled in the same mold in sections, and then are pressed to form a composite.The heat-insulating layer not only has excellent heat-insulating performance, but also has good toughness and impact resistance;The heat-absorbing layer can quickly absorb heat and accumulate heat, the temperature rising speed in the furnace is increased by more than 30%, the set temperature is quickly reached, the heat-insulating performance is increased by more than 2 times, and has good practical value and important energy-saving and environmental protection social value.

The invention discloses a design method of an anti-corrosion and wear-resistant reinforced sucker rod, and relates to the technical field of oil exploitation equipment. According to the method, chemical components of the sucker rod are optimized, alloy elements such as chromium, nickel and molybdenum and microalloy elements such as niobium, titanium and vanadium are added, meanwhile, the surface treatment processes of boriding, nickel-phosphorus alloy plating and polyurethane elastomer coating are adopted, all links of the manufacturing process are optimized, and the manufacturing process is optimized. The corrosion resistance, the wear resistance and the comprehensive mechanical property of the sucker rod are obviously improved. Tests prove that the sucker rod adopting the design method can effectively deal with a complex and severe underground environment, the service life is prolonged, the oil extraction operation cost of an oil field is reduced, and the sucker rod has a wide application prospect.

The invention belongs to the technical field of vanadium titano-magnetite sintering, and particularly discloses a method for preparing high-alkalinity sinter from low-iron high-titanium high-vanadium magnetite. The method for preparing the sintered ore provided by the invention comprises the following steps: crushing low-iron high-titanium high-vanadium magnetite, sulfuric-acid slag, a flux and a carbon-containing fuel; 20-40 parts of low-iron, high-titanium and high-vanadium magnetite, 6-20 parts of sulfuric-acid slag, 8-24 parts of flux, 2-4 parts of carbon-containing fuel and 6-12 parts of return mine are blended, and a mixture is formed; and adding water into the mixture, granulating to obtain a ball material, and sintering to obtain the sintered ore. According to the method, the solid waste sulfuric-acid residue is added in the ore blending process, element regulation and control of the sintered material are achieved, and resource reutilization of the solid waste sulfuric-acid residue can also be achieved; a flux is added in the sintering process, and high-quality binder phase calcium ferrite is generated under lower alkalinity by regulating and controlling sintering alkalinity and element composition, so that the strength performance of the sintered ore is effectively improved.