106 results about "Lead oxide" patented technology

An achromatic imaging optic (20) is used to image an output field (16a) along a beam path (23) of the imaging optic (20) into a target field (14) for use in DUV microlithography. The imaging optic (20) has a plurality of lenses (L1 to L13), each containing less than 5% lead oxide. At least one of the lenses (L5, L7, L9) is made of a high-dispersion optical material with an Abbe number less than 50. At least one of the lenses (L1 to L4, L6, L8, L10 to L13) is made of a low-dispersion optical material with an Abbe number greater than 50. This results in an imaging optic with simplified manufacturing. Depending on the design, the imaging optics can be part of an optical system of a projection exposure system as an illumination lens (20) or as a projection lens.

The invention relates to a method for preparing high-purity bismuth by removing impurity lead in refined bismuth through oxidation slagging, and belongs to the technical field of non-ferrous metals. Melting and oxidizing: melting a lead-containing refined bismuth raw material at 300-400 DEG C, adding bismuth oxide into the molten bismuth, and fully stirring to enable the bismuth oxide and lead to generate oxidation reaction to generate lead oxide; slagging reaction: adding boric anhydride (B2O3) into the melt, and enabling the boric anhydride (B2O3) to react with the generated lead oxide to generate lead borate slag; slag salvaging and lead removal: stirring for 30-60 minutes at the temperature of 300-400 DEG C in a heat preservation manner, so that the slagging reaction is fully carried out, generated lead borate slag with lower density floats to the surface of a melt, and a lead-containing slag phase is removed in a mechanical or manual slag salvaging manner; and after the slag salvaging process is finished, cooling the bismuth melt under a protective atmosphere until the bismuth melt is solidified to obtain a lead-removed high-purity bismuth product. According to the method, bismuth oxide and boric anhydride are introduced, metal lead is converted into lead borate slag easy to float, efficient and deep separation of lead and bismuth melt is achieved through the density difference, and the lead content can be reduced to 1 ppm or below.

An achromatic imaging optic (20) serves to image an output field (16a) along a beam path (23) of the imaging optic into a target field (14) for use in DUV microlithography. The imaging optic (20) has a plurality of lenses (L1 to L10), each of which contains less than 5% lead oxide. At least one of the lenses (L4, L7) is made of a high-dispersion optical material with an Abbe number less than 55. At least one of the lenses (L1 to L3, L5, L6, L8 to L10) is made of a low-dispersion optical material with an Abbe number greater than 55. This results in an imaging optic whose fabrication is simplified.

This invention relates to a method for preparing monocrystalline lead oxide from waste lead paste using a low-temperature pyrometallurgical process, belonging to the field of resource recycling technology for waste lead-acid batteries. The invention involves removing waste positive and negative electrode plates from lead-acid batteries and washing them with water; peeling waste lead paste from the grids of the waste positive and negative electrode plates, grinding and sieving to obtain waste lead paste powder; mixing the waste lead paste powder with a desulfurizing agent, a desulfurization aid, and a crystal form control agent to obtain mixture A; calcining mixture A at 400-600℃ for 2-8 hours, followed by furnace cooling to obtain mixture B; washing and drying mixture B to obtain monocrystalline lead oxide, which is α-PbO, β-PbO, or Pb3O4. This invention directly uses waste lead paste from lead-acid batteries for a one-step low-temperature pyrometallurgical process to prepare monocrystalline lead oxide. The desulfurizing agent can directly desulfurize the waste lead paste, the desulfurization aid can lower the calcination temperature, and the crystal form control agent regulates the crystal structure of the generated lead oxide species, resulting in monocrystalline lead oxide with high purity and good crystallinity.

The application discloses a kind of high oxidation rate lead-zinc oxide ore aerated sulphidation flotation and tailings discharge process, belong to mineral processing technical field.The method includes the following steps: grinding to lead-zinc oxide ore raw ore, obtain slurry;Sodium sulfide is added to slurry, and under the condition of aerated stirring, sulphidation reaction is carried out, and sulphidation slurry is obtained;Collector and foaming agent are added to sulphidation slurry, and flotation is carried out, and lead concentrate and zinc concentrate are obtained.The application introduces forced aerated stirring in the sulphidation process, strengthens the mass transfer process among gas-liquid-solid three phases, promotes the generation of dense, stable lead sulfide film on the surface of lead oxide minerals, solves the problem of low sulphidation efficiency of traditional sulphidation process.The application is used to treat refractory lead-zinc oxide ore containing Pb 5.59%, Zn 44.02%, oxidation rate more than 90%, and closed-circuit test can obtain qualified lead concentrate with lead grade of 60.72% and lead recovery rate of 79.53%, while lead flotation tailings directly become zinc concentrate with zinc grade of 46.33% and zinc recovery rate of 98.41%, realizing efficient separation of lead and zinc and tailings discharge.

The application discloses a method for comprehensive recovery and utilization of oxidized lead-tin-silver ore, which comprises the steps of pretreatment, oxidized lead flotation, mixed concentrate concentration, table operation and post-treatment. The oxidized lead-silver-tin is recovered through the combined process of flotation and gravity separation, and the process flow is simple, easy to operate, energy-saving, environment-friendly, and good in applicability. The obtained lead concentrate is high in lead grade and high in recovery rate, and tin and silver are comprehensively recovered and utilized in the form of various valuable minerals.

The invention discloses a space anti-radiation glass cover sheet and a preparation method thereof, the glass cover sheet comprises the following raw materials by mass: 50-70 parts of silica, 5-15 parts of sodium oxide, 5-10 parts of lithium oxide, 5-10 parts of diboron trioxide, 3-10 parts of lead oxide, 2-6 parts of cerium oxide, 0.5-6 parts of potassium oxide, and 2-5 parts of alumina. According to the invention, PbO and CeO2 are added into the preparation raw materials, so that the radiation resistance of the glass cover plate is enhanced.

The invention belongs to the technical field of adsorption materials, and particularly relates to a hydroxyl-free lead dioxide-based nitric oxide absorbent and a preparation method thereof. The method comprises the following steps: preparing a mixed solution of perchloric acid and lead perchlorate, standing to form a saturated solution, and performing electrodeposition by using the saturated solution as an electrolyte to obtain a lead dioxide deposition layer; and cleaning, drying and crushing the sediments, drying the sediments in an air dry oven with an air exchange function, and calcining the sediments at high temperature to form a target product. The obtained absorbent has the characteristics of hydroxyl-free structure, nanoscale particle size, high porosity, excellent adsorption performance and the like. Test results show that the absorbent has good selective adsorption capacity on NO2, and the adsorption efficiency can reach 85% or above. The material is suitable for nitrogen oxide interference absorption in the determination process of the hydrocarbon content in coal, and has important application value.

The invention provides a rubber crosslinking accelerator, a sidewall rubber composition, a sidewall rubber material and a preparation method and application thereof. The rubber crosslinking accelerator comprises octachlorocyclopentadiene, triethanolamine and lead oxide, and the mass ratio of the octachlorocyclopentadiene to the triethanolamine to the lead oxide is (1.0-3.0): (0.5-1.5): (1.0-3.0). In the rubber cross-linking accelerator provided by the invention, octachlorocyclopentadiene can be used as a cross-linking agent of diene rubber, lead oxide is used as a chlorine acceptor, triethanolamine is used as a chlorine active agent, and the octachlorocyclopentadiene, lead oxide and triethanolamine have a synergistic effect under a specific ratio, so that part of traditional vulcanizing agents and accelerators can be replaced; a carbon-carbon single bond is generated in the crosslinking process of a rubber matrix, the bond energy of the carbon-carbon single bond is remarkably higher than that of a sulfur-containing bond, and the chemical stability of the carbon-carbon single bond is higher, so that the vulcanized rubber with the carbon-carbon single bond has remarkable advantages in high temperature resistance and acid and alkali corrosion resistance.

A CaB2O4 / Pb3O4 / Mg3B2O6 / C nanocomposite that includes orthorhombic calcium metaborate (CaB2O4), tetragonal lead tetroxide (Pb3O4), magnesium borate (Mg3B2O6), and carbon (C). The CaB2O4 / Pb3O4 / Mg3B2O6 / C nanocomposite includes 55 to 70 atomic percent (at. %) oxygen (O), 5.0 to 12.5 at. % calcium (Ca), 7.5 to 15 at. % magnesium (Mg), 7.5 to 15 at. % lead (Pb), 2.5 to 7.5 at. % boron (B), and 2.5 to 7.5 at. % carbon (C), each based on a total number of atoms in the CaB2O4 / Pb3O4 / Mg3B2O6 / C nanocomposite. The nanocomposite is used in a method of removing organic pollutants and / or heavy metals from water.

The application belongs to the technical field of polymer materials, and discloses a high-elasticity and anti-cracking crack filling glue and a preparation method thereof. The high-elasticity and anti-cracking crack filling glue comprises the following raw materials: asphalt, thermoplastic elastomer, metallocene polyolefin elastomer, plasticizer, lead peroxide, silane coupling agent and stabilizer. The preparation method is as follows: the asphalt is heated to 180-200 DEG C, and then the thermoplastic elastomer, metallocene polyolefin elastomer, plasticizer, stabilizer, lead peroxide and silane coupling agent are added and uniformly mixed and dispersed by stirring; after the reaction is continuously carried out under the condition of heat preservation and stirring, the crack filling glue is obtained by cooling to room temperature. The crack filling glue of the application contains metallocene polyolefin elastomer, plasticizer and lead peroxide, and the synergistic effect among the three is utilized, so that the obtained crack filling glue has excellent aging resistance, low-temperature performance, adhesion and permeability.

The invention discloses a lead-oxygen-silicon composite solid electrolyte material and a preparation method of a lead-oxygen-silicon battery, and relates to the technical field of solid-state batteries, the material comprises the following components by weight: 15-30 parts of a lead-oxygen compound; 40 to 60 parts of a mesoporous silicon substrate; 1-5 parts of a rare earth element dopant; 0.5-3 parts of an alkaline earth metal dopant; the lead-oxygen compound is compounded to serve as an ion conduction core, the rare earth element and the alkaline earth metal doping agent are matched to form a synergistic system, the ion conduction environment can be optimized, the ion migration efficiency can be improved, free lead ions can be anchored through the chemical effect, lead ion dissolution is greatly reduced, and the lead-ion conductivity is improved. The environmental protection property and the ion conduction capability are considered; and meanwhile, a hierarchical porous structure is constructed by virtue of a mesoporous silicon substrate, so that the lead oxide compound is loaded in order in a nano form, a pore channel is accurately filled with a polymer phase, a continuous and stable ion conduction path is formed, and the problems of high interface impedance and discontinuous conduction path of the traditional electrolyte are effectively solved. [1] The synergistic compounding of the rare earth element and the alkaline earth metal dopant in the patent is the core innovation point, the multi-stage material is only used as the auxiliary innovation, and when an embodiment is written, only the contrast of the core innovation point needs to be written, and the contrast does not need to be written by using the multi-stage material.

The invention discloses a method for detecting lead plaster components of a waste lead-acid storage battery. The invention relates to the technical field of waste storage battery resourceful treatment and detection, the method comprises preparation and calibration of an EDTA standard solution, and continuous determination of the content of lead oxide, lead sulfate, metal lead and lead dioxide in lead plaster, through use of formic acid, ammonium carbonate and other reagents and combination of an ultrasonic-assisted extraction technology, the dissolution efficiency is significantly improved, and the content of lead oxide, lead sulfate, metal lead and lead dioxide in the lead plaster is determined. The reaction time is greatly shortened; the selective dissolution of the metal lead is realized by accurately controlling the low-temperature condition and the reaction time, and the interference of lead dioxide is effectively avoided; according to the method, by optimizing a reagent system and introducing ultrasonic-assisted extraction, the dosage of strong acid and the emission of toxic wastes are greatly reduced, the method is more environment-friendly while the result accuracy is ensured, and the method is clear in operation flow, good in reproducibility and suitable for rapid and reliable determination of the components of the lead paste in an industrial recovery scene.

The application discloses a kind of lead-graphene negative lead paste and preparation method thereof, belong to lead-acid battery technical field;Solve the technical problem that the battery cycle service life of battery failure caused by the poor uniformity of the composition of the existing negative lead paste, negative sulphation;The lead-graphene negative lead paste and preparation method thereof of the application include: step 1, preparation lead graphene lead ingot;Step 2, preparation lead-lead oxide-graphene lead powder;The lead graphene lead ingot casted in step 1 is cut into pieces, and the pure lead lead ingot is cut into pieces, then the lead graphene lead ingot cut into pieces and the pure lead lead ingot cut into pieces are put into a ball mill, air is introduced and grinded, to obtain lead-lead oxide-graphene lead powder;Step 3, preparation lead-graphene composite negative lead paste.The battery prepared by the negative lead paste prepared by the application has a cycle life of more than 500 times, and also solves the problem of negative sulphation.

The application provides a method for preparing lead oxide from copper smelting electric dust ash, and comprises the following process steps: (1) sulfuric acid leaching: adding sulfuric acid; (2) acetic acid leaching: adding acetic acid; (3) ammonia water-sodium acetate leaching: adding ammonia water and sodium acetate; (4) lead precipitation: adding sodium oxalate; (5) lead oxide. The application adopts twice acid leaching, on the one hand, valuable metals in the copper smelting electric dust ash except lead are effectively leached; on the other hand, impurity elements in the acid leaching residue are reduced, and high-purity lead oxide products are prepared subsequently. The lead element in the acid leaching residue is leached by ammonia water-sodium acetate, and under the weak alkaline condition, the leaching of lead is beneficial, and the leaching of other elements such as copper, arsenic and zinc is inhibited.

The invention belongs to the technical field of beneficiation, and particularly discloses a beneficiation method of low-grade refractory lead-zinc oxide ore, which comprises the following steps: crushing and screening raw lead-zinc oxide ore to obtain a material with the particle size of 10-40mm, and carrying out photoelectric separation and waste rock removal to obtain an ore raw material with improved grade; the ore raw materials are finely crushed and then subjected to screening and photoelectric separation, fine ore materials with the particle size being-10 mm are screened, and coarse-grain materials are separated through a cyclone; an overflow object is screened to remove waste rocks, settled sand is screened to obtain a material meeting the particle size requirement, the material is subjected to chemical adding bulk flotation and chemical removal treatment, and bulk concentrate obtained after chemical removal is obtained; and sodium sulfite and zinc sulfate are added for lead-zinc separation treatment, and lead concentrate and zinc concentrate are obtained correspondingly. By means of the two-stage waste pre-throwing and oxygen-sulfur mixed flotation system, the agent consumption is remarkably reduced, slime interference is relieved, the lead-zinc recovery rate is increased, and the method is suitable for efficient comprehensive utilization of the low-grade lead-zinc oxide ore.

This invention discloses a lead-based fast reactor control technology for nuclear power plants, specifically a electrically powered solid oxygen control and regulation system for a lead-based fast reactor, comprising: a liquid lead-bismuth flow pipeline, a solid oxygen source replenishment device, and a liquid level control system. The liquid lead-bismuth flow pipeline includes: a loop inflow pipeline, a loop pipeline expansion bend, a vertical pipeline dissolution chamber, a loop outflow pipeline, a charging tank isolation chamber, and an electric valve. The solid oxygen source replenishment device includes: a motor, a fixed flange, a screw sleeve, a threaded connection structure, a screw, ribs, an upper orifice plate of the charging tank, a charging tank, a lower orifice plate of the charging tank, a locking hole on the upper orifice plate of the charging tank, alumina spheres, lead oxide ceramic spheres, and a charging tank isolation chamber. The liquid lead-bismuth in the liquid lead-bismuth flow pipeline sequentially passes through the loop inflow pipeline, the loop pipeline expansion bend, and the vertical pipeline dissolution chamber, then exchanges oxygen ions with the charging tank before entering the downstream system through the loop outflow pipeline, thus achieving solid oxygen control and oxygen ion exchange.

The present invention relates to a positive active material for all-solid-state rechargeable batteries, a preparation method thereof, a positive electrode for all-solid-state rechargeable batteries, and all-solid-state rechargeable batteries, the positive active material comprising lithium transition metal composite oxide particles and a coating layer positioned on the surface of each lithium transition metal composite oxide particle, wherein the coating layer comprises: coating particles containing a metal oxide; and a low-melting metal oxide including phosphorus oxide, lead oxide, vanadium oxide, or a combination thereof.

The utility model discloses a lead supply device for a cast-weld mold, and relates to the technical field of cast-weld of lead-acid storage batteries. The heating device comprises a lead pan and a heater arranged in the lead pan, an opening is formed in the bottom side surface of the lead pan, and an L-shaped lead discharging pipe is arranged at the opening in a penetrating manner; the vertical section of the L-shaped lead discharging pipe is provided with a flow channel A, the horizontal section of the L-shaped lead discharging pipe is provided with a valve cavity, and the bottom end of the flow channel A is provided with a flow channel B communicated with the valve cavity; a blocking ball and a liquid outlet are arranged on the valve cavity close to the runner B; a valve sleeve is arranged in the valve cavity and provided with a valve rod. According to the utility model, the original mode of immersing the die into the lead pan is changed into the mode of flowing into the busbar from the bottom of the lead pan by gravity; the lead discharging mode is changed into the mode of discharging lead from the bottom, the lead oxide slag with the surface in contact with air has little influence on the cast-weld effect, the surface movement of the lead liquid is little, and a protective film formed by the formed lead oxide slag blocks repeated oxidation of the lead liquid, so that the lead slag is reduced.

The invention relates to the technical field of electronic materials, in particular to conductive silver paste for a BC battery, a preparation method and the BC battery, and the conductive silver paste comprises the following components in percentage by weight: 88-93 wt% of silver powder, 3-5 wt% of glass powder, 1-3 wt% of organic resin, 6-10 wt% of solvent and 0-1 wt% of other auxiliaries, the sum of the components is 100 wt%, the glass powder comprises an alkali metal ion compound and / or a high-content lead oxide. By adding the rubidium ionic compound, the cesium ionic compound and the high-content lead oxide, the conflict between the softening point and acetic acid resistance of the glass powder can be balanced, so that the problem of high acetic acid attenuation rate of a BC battery is completely or partially solved, and meanwhile, the reliability of the BC battery is improved.

The invention discloses a cosolvent for beta-Ga2O3 crystal growth, application of the cosolvent and a crystal growth method, the cosolvent for beta-Ga2O3 crystal growth comprises a mixture composed of bismuth oxide and boron oxide, and the molar ratio range of bismuth oxide to boron oxide is (0.5-2): (2-5). When the cosolvent is used for crystal growth of beta-Ga2O3, the melting temperature can be reduced to 1200 DEG C or below, and the purpose of low carbon is achieved; melting can be carried out in an air atmosphere; the method can be suitable for a relatively high heating rate of 50 DEG C / h to 200 DEG C / h, a relatively short heat preservation time of 3 h to 8 h and a relatively high cooling rate of 5 DEG C / h to 10 DEG C / h, so that the purposes of high efficiency and stability are achieved; and moreover, the cosolvent does not contain toxic auxiliaries such as lead oxide or fluoride, so that the influence on the health of an operator and the environment can be avoided.

The invention belongs to the technical field of electrochemistry, and particularly relates to a graphene-based electrochemical oxidation method and device, and the method comprises the following steps: S1, raw material pretreatment and dispersion, S2, electrode preparation and assembly, S3, electrochemical oxidation reaction, S4, product separation and purification, and S5, drying treatment. The lead oxide electrode is used as the anode to replace a precious metal electrode, the cost is reduced, large-scale application is facilitated, the sodium sulfate solution is used as the electrolyte, corrosion of strong acid electrolyte is avoided, the method is friendly to equipment and environment, side reactions in the electrochemical oxidation process are few, and stable structure and performance of graphene can be kept; and the whole device is simple, convenient to operate and easy to realize industrial production.

The application discloses a tungsten alloy material containing a silicon carbide reinforced Al2O3-SiO2-based composite ceramic coating and a preparation method thereof, and belongs to the field of ceramic material preparation. The method is as follows: powder raw materials including modified silicon carbide, aluminum oxide, silicon dioxide and lead oxide are mixed with a solvent by ball milling, and ceramic slurry is obtained by removing bubbles; the ceramic slurry is brushed on the surface of a tungsten alloy substrate which has been pre-treated, and then dried and vacuum sintered. The application introduces a dense silicon carbide reinforced Al2O3-SiO2-based composite ceramic coating on the surface of the tungsten alloy substrate, significantly improves the hardness, high-temperature oxidation resistance and high-temperature decarburization resistance of the tungsten alloy material, and the dispersed point-like silicon carbide can improve the stability of the coating, uniformly reduce the thermal expansion coefficient of the coating, reduce the difference between the thermal expansion coefficients of the composite ceramic coating and the tungsten alloy substrate, and improve the thermal shock resistance of the coating.

To provide a sealing material containing a glass composition which contains neither lead oxide nor vanadium oxide, can be fluidized by firing at a low temperature, and is excellent in acid resistance of a fired body.SOLUTION: A sealing material comprising a tellurium oxide-based glass composition substantially free of any of lead oxides and vanadium oxides, wherein the tellurium oxide-based glass composition comprises, as represented by mol% in terms of oxides, 44 to 70% of TeO2, 2 to 25% of Nb2O5, 3 to 20% of ZnO, and 0 to 15% in total of one or more of MgO, CaO, SrO, and BaO.SELECTED DRAWING: None

A particulate Ca2PbO4 / PbO / Co3O4 / C nanocomposite material comprising, as determined by X-ray diffraction (XRD): elemental carbon (C); an orthorhombic lead oxide (PbO) crystalline phase; an orthorhombic calcium lead oxide (Ca2PbO4) crystalline phase; and, a cubic cobalt oxide (Co3O4) crystalline phase. The particulate nanocomposite material is characterized by having, based on the total number of atoms in the nanocomposite material: an atomic concentration of carbon of from about 1 atomic percent (at. %) to about 10 at. %; an atomic concentration of lead (Pb) of from about 5 at. % to about 15 at. %; an atomic concentration of calcium (Ca) of from about 10 at. % to about 25 at. %; and, an atomic concentration of cobalt (Co) of from about 10 at. % to about 20 at. %.

The present disclosure relates to paste compositions that contain a lead oxide, a carbon black comprising an alkali metal silicate impregnated thereon, a lignin source, barium sulfate, sulfuric acid, and optionally additional water. Electrodes, such as electrode plates, are prepared by first forming the paste composition, and then drying and curing the paste composition onto a metal current collector to form the electrodes. The electrodes can be utilized in lead acid batteries.

The present application relates to circulating pump technical field, specifically to a kind of high-temperature liquid metal circulating pump damping device for nuclear industry, including base, the top of base is fixedly connected with driving device, driving device is fixedly connected with driving shaft, one side of driving device is provided with pump shell, pump shell is installed on base, the two ends of pump shell are communicated with inlet and outlet, the end of driving shaft away from driving device is fixedly connected with transmission gear two, the other side of transmission gear two is fixedly connected with pump shaft.The present application utilizes centrifugal force field generated by impeller rotation, so that the solid particles with higher density are automatically enriched to the inner wall of pump shell, through mechanical transmission mechanism, filter screen frame is driven to periodically expand and contract in specific area, through the unique design of bidirectional screw rod, the timing and period of filtration and backwashing can be accurately controlled, the source interception and efficient capture of lead bismuth alloy particles are realized, the vibration and wear of main pump are significantly reduced from the root, and the running stability and life are improved.

A process for recovery lead including providing lead-bearing material. The lead-bearing material includes lead sulfate (PbSO4). The lead-bearing material is heated resulting in the formation of gaseous sulfur compounds and lead oxide. The gaseous sulfur compounds and the lead oxide are separated. The lead oxide is lanced with a hydrocarbon resulting in the formation of lead (Pb) and carbon dioxide (CO2). The lead and the carbon dioxide are separated.

A composition is provided comprising one or more of alpha lead oxide, beta lead oxide, metallic lead. Pb2O3 and Pb3O4, the composition comprising particles comprising sub-particles, the sub-particles having a mean greatest dimension of from 10 to 300 nm. Methods of making such a composition are also described.

The invention discloses a lead-carbon storage battery negative electrode lead paste in the technical field of storage batteries. The lead-carbon storage battery negative electrode lead paste comprises the following materials in parts by weight: 0.2-0.6 part of a biomass derived carbon material, 6-12 parts of sulfuric acid and 12-20 parts of deionized water. The fertilizer is prepared from, by weight, 0.08-0.1 part of short fibers, 0.1-0.3 part of humic acid, 0.2-0.4 part of sodium lignosulfonate, 0.4-0.8 part of carboxymethylcellulose, 0.6-1 part of barium sulfate and 100 parts of lead oxide powder. The lead-carbon battery provided by the invention has excellent battery performance and long service life, and meanwhile, the preparation cost of the battery is effectively reduced.