224 results about "Diiron Trioxide" patented technology

The invention discloses a thermal insulation material with enhanced thermal insulation performance and a processing method, and relates to the technical field of thermal insulation material processing. Comprising the following components in parts by weight: 100 to 200 parts of a nanopore matrix material, 20 to 120 parts of expanded perlite, 10 to 350 parts of polystyrene, 30 to 300 parts of polyurethane, 100 to 500 parts of nano titanium dioxide, 10 to 60 parts of graphene, 10 to 40 parts of silica sol and 1 to 55 parts of ferric oxide. A multi-stage pore structure is constructed through a nanopore matrix and expanded perlite, closed-cell foam of polystyrene and polyurethane is combined, and nano titanium dioxide and graphene functional filler are matched, so that the heat conductivity coefficient is reduced to 0.018 W / (mK) or below, the heat insulation efficiency is remarkably improved, nanoscale homogenization is ensured through high-shear dispersion in the process, the porosity is reserved through freeze drying, and the heat insulation performance is greatly improved. The microcapsule self-repairing layer can repair more than 85% of cracks, the service life is greatly prolonged, and in the aspect of function integration, the material has A-level fireproof, waterproof and weather-proof characteristics and heat preservation and heat insulation performance.

The invention relates to a stainless steel flux-cored wire and a preparation method thereof, and relates to the technical field of flux-cored wires. The stainless steel flux-cored wire comprises a stainless steel strip and a double-layer flux core, the stainless steel strip is filled with the double-layer flux core, and the filling amount of the double-layer flux core accounts for 20-25% of the total mass of the stainless steel flux-cored wire; the double-layer flux core comprises a rapid reaction layer and an alloy transition layer, the rapid reaction layer comprises an oil stain oxidizing agent, the oil stain oxidizing agent comprises a high-temperature decomposition type organic matter and an inorganic composition, and the inorganic composition comprises copper oxide and ferric oxide with the mass ratio being (1-1.5): 1. The high-temperature decomposition type organic matter comprises polytetrafluoroethylene micro powder and trisodium citrate according to the mass ratio of 1: (3-5), and the alloy transition layer comprises 316L stainless steel powder, metal powder, silicon powder, niobium carbide and rare earth oxide. The invention can effectively avoid hydrogen embrittlement caused by diffusible hydrogen easily formed by compounds in anti-rust oil remaining on the surface of the welding wire during welding and entering a welding seam.

The invention belongs to the technical field of metal preparation, and particularly relates to a Fe-Al-Nb alloy and a preparation method thereof. Comprising the following steps: mixing ferric oxide, niobium pentoxide powder and a metal diluent, performing ball milling, and pressing into a green body; and the blank is put into a reaction kettle, then an ignition agent is added, protective gas is inflated, a self-propagating reaction is conducted at the temperature of 260-300 DEG C, and the Fe-Al-Nb alloy is obtained. The Fe-Al-Nb alloy is prepared through the self-propagating reaction, the reaction temperature is reduced, the thermal stress during forming is improved, the temperature of the self-propagating reaction is only 260-300 DEG C, meanwhile, the self-propagating reaction mode is adopted, the alloy is rapidly cooled after reacting, the fine grain strengthening effect is promoted to be more obvious, a microstructure of a Fe3Al matrix phase and a C14 Laves reinforced phase is formed, and the Fe-Al-Nb alloy is obtained. And the distribution of a reinforced phase is more uniform, and the wear resistance of the material is improved.

The present invention relates to a preparation method of a self-propagating anti-corrosion and wear-resistant coating for a boiler water wall, belonging to the technical field of high-temperature protective coatings. The preparation steps are as follows: (1) Aluminum powder, iron(III) oxide powder, chromium oxide powder, zirconia fine powder, alumina fiber, heat-conducting filler and flux are ball-milled and mixed to obtain a mixed powder; (2) The mixed powder and sodium silicate binder are mixed evenly to obtain a suspension slurry; (3) The surface of the boiler water wall is treated by sandblasting; (4) A precoating is made on the surface of the boiler water wall; (5) A sodium silicate layer is made on the precoating; (6) A magnesium strip is ignited to initiate a self-propagating reaction to obtain a protective layer; (7) The protective layer is removed to obtain a self-propagating anti-corrosion and wear-resistant coating on the surface of the boiler water wall. The sodium silicate used as the binder obtains a dense self-propagating anti-corrosion and wear-resistant coating, and the self-propagating anti-corrosion and wear-resistant coating has good thermal conductivity, uniform thickness, excellent mechanical wear resistance and good corrosion resistance.

The invention relates to the technical field of capacitors, and discloses a high-energy-density capacitor which is characterized in that a positive electrode is composed of a composite active material, a conductive agent and a binder, the composite active material comprises a mixture of nitrogen-sulfur co-doped carbon foam magnetic microspheres and iron sesquioxide nanodot at nitrogen-doped graphene, and the conductive agent is a mixture of nitrogen-sulfur co-doped carbon foam magnetic microspheres and iron sesquioxide nanodot at nitrogen-doped graphene. The preparation method of the nitrogen-sulfur co-doped carbon foam magnetic microspheres comprises the following steps: by taking polyacrylonitrile as a carbon source, thiourea as a sulfur source and ferric nitrate as an iron source, carrying out hydrothermal reaction and then carrying out carbonization treatment at 800-1000 DEG C for 2-4 hours; the energy density of the high-energy-density capacitor can reach 700-800 Wh / kg, the power density is larger than or equal to 10 kW / kg, compared with a traditional super capacitor, the high-energy-density capacitor has the advantages that the energy density is remarkably improved, and the application requirements of the fields with high requirements for energy and power such as electric automobiles and intelligent power grids can be met.

The invention belongs to the technical field of environmental science and resource utilization, and relates to a rapid enteromorpha humification method and application, under the action of a catalyst, enteromorpha is humified by a hydrothermal method to obtain an enteromorpha-based bio-organic fertilizer; the catalyst is more than one of nano ferric oxide, nano ferric chloride, nano cuprous chloride and ammonium sulfite. According to the method, rapid humification of the enteromorpha is realized, the high-activity fertilizer is prepared, the pollution problem of the enteromorpha is effectively solved, and resource utilization of the enteromorpha is promoted.

The application provides a weathering steel surface rust layer stabilizing treatment agent for industrial atmospheric environment, and the chemical composition of the weathering steel surface rust layer stabilizing treatment agent is as follows in terms of mass fraction: 25-45% of acrylic resin, 2.0-6.0% of chromium sulfate, 3.0-8.0% of ferrous oxide, 2.0-6.0% of ferric oxide, 0.5-3.5% of copper sulfate, 0.3-1.5% of sodium bisulfite, 1.0-6.0% of sodium molybdate, 0.5-3.5% of nickel sulfate, 2.0-5.0% of potassium phosphate, 0.05-0.5% of surfactant, 0.05-0.5% of defoaming agent, 0.05-0.5% of dispersing agent, 0.05-0.5% of thickening agent, and the balance is water, wherein the amount of plasticizer added is 2-5% of the resin. The stabilizing treatment agent in the application can promote the weathering steel surface to form a stable and dense rust layer within 0.5-1 year after the surface of the weathering steel is treated before use.

The application belongs to the field of metal materials, and discloses a method for preparing porous iron by impregnating organic foam, which comprises the following steps: step 1: impregnating slurry into a polyurethane foam template after roughening, to obtain a slurry-attached foam template; the slurry is an aqueous solution containing water-soluble resin, iron powder, ferric oxide, surfactant and thickening agent; the water-soluble resin contains a curing agent; step 2: performing rolling and drying operations on the slurry-attached foam template obtained in step 1, to obtain a green body; and step 3: performing combustion, reduction and sintering operations on the green body obtained in step 2. By using a foaming surfactant, the foaming effect of the foaming surfactant is utilized to solve the problem of closed pores and increase the porosity, and the water-soluble resin is used in combination, so that the material has certain toughness and tensile strength while the porosity is increased, and the porous iron material with high porosity and high strength is obtained. Meanwhile, the application also discloses a porous iron.

The invention provides a dark metal modified lithium orthosilicate-based thermochemical heat storage material as well as a preparation method and application thereof, and belongs to the technical field of energy and material science. The components of the heat storage material comprise lithium orthosilicate and dark metal, the proportion of the dark metal in the heat storage material is 2-10 mol%, and the source of the dark metal comprises one or more of manganese dioxide, ferric oxide, nickel oxide and copper oxide. Metal ions introduced into the obtained dark metal modified lithium orthosilicate-based thermochemical heat storage material have the effects of promoting the ion migration rate and resisting material sintering, and specifically, the heat storage density and the cycling stability of the material are remarkably enhanced. In addition, due to the introduction of the dark metal oxide, the color of the heat storage material is remarkably deepened, the solar spectrum absorptivity is greatly improved, the light absorption performance of the material is greatly enhanced, and the heat storage material has higher photo-thermal conversion efficiency and is more suitable for a concentrating solar energy storage system.

The invention belongs to the technical field of electrocatalytic nitrate reduction catalysts, and particularly relates to a graded porous hollow carbon fiber catalyst with synergistic monatomic iron and ferric oxide clusters as well as a preparation method and application of the graded porous hollow carbon fiber catalyst. The preparation method specifically comprises the following steps: stirring polyacrylonitrile and polymethyl methacrylate in an organic solvent to obtain a spinning precursor solution; the preparation method comprises the following steps: taking ferrous sulfate heptahydrate and 1, 10-phenanthroline as ligands, and stirring in an organic solvent to obtain a metal organic ligand; the preparation method comprises the following steps: stirring a spinning precursor solution and a metal organic ligand, obtaining a metal precursor-loaded composite fiber through an electrostatic spinning technology, and then carrying out pre-oxidation and high-temperature pyrolysis to obtain the composite fiber. The prepared carbon fiber has good conductivity and a unique hollow hierarchical porous structure, transmission of reactants is greatly promoted while more active sites are exposed, the carbon fiber serves as a monatomic synergistic cluster catalyst carrier, rapid transmission of electrons is facilitated, and the electro-catalysis efficiency is effectively improved.

The invention discloses a thermite formula for coating a ceramic layer in a steel pipe and a preparation method of the thermite formula, and relates to the technical field of steel pipe lining metal ceramic, the formula comprises aluminum powder, ferric oxide, silicon dioxide and oxygen, and further comprises copper oxide and diboron trioxide, the content of oxygen is smaller than the amount of oxygen consumed when the aluminum powder is completely oxidized, and the content of silicon dioxide is smaller than the amount of copper oxide consumed when the aluminum powder is completely oxidized. When the oxygen participating in the reaction is exhausted, aluminum which does not participate in the oxidation reaction exists. According to the invention, by adding the diboron trioxide and the copper oxide, a traditional metal ceramic lining steel pipe combined in a mechanical mode can be improved into a metal ceramic inner covering steel pipe combined in a brazing mode, so that the binding force of the inner covering layer and the base pipe is improved, and the surface flatness of the inner covering layer is improved so as to reduce the fluid conveying resistance; the metal ceramic internally-coated steel pipe manufactured through the formula and the specific implementation method has the advantages of being high in bonding force between the internally-coated layer and the base pipe, smooth in surface, resistant to high temperature and high pressure and resistant to corrosion.

The invention relates to the technical field of oilfield chemistry, in particular to a nano-composite viscosity reducer, a preparation method, application and a high-viscosity thick oil viscosity reduction method. According to the preparation method, the nano composite viscosity reducer is prepared from a surface-modified nano oxide and an amphiphilic polymer through a solvent exchange method; the nano oxide is nano silicon dioxide nano particles, zinc oxide nano particles or ferric oxide nano particles, and the amphiphilic polymer is a partial esterification product of a styrene-maleic anhydride copolymer or an octadecyl acrylate-methacrylic acid copolymer. According to the preparation method, the viscosity reducer not only can efficiently disassemble a colloid asphaltene network structure, but also has a certain catalytic modification function, does not influence subsequent treatment of crude oil, and has the advantages of high viscosity reduction efficiency, lasting effect, no formation of stable emulsion, shear resistance, good temperature resistance, strong universality and the like.

The invention discloses a multi-band high-stability ferrite magnetic material composite formula and a preparation process, and relates to the technical field of magnetic materials. The ferrite magnetic material composite formula comprises 38-42 parts of ferric oxide powder, 37-41 parts of ferroferric oxide powder, 6-12 parts of graphene nanosheets, 5-7 parts of hydroxypropyl methyl cellulose, 6-9 parts of lanthanum oxide, 4-6 parts of scandium oxide, 1-3 parts of nano titanium dioxide, 4-6 parts of bismuth magnesium boron, 9-13 parts of ferric sulfate, 3-5 parts of manganese sulfate, 4-6 parts of zinc sulfate, 2-4 parts of copper sulfate and 2-3 parts of samarium sulfate. By utilizing a physical vapor deposition gradient doping process, the problems that an existing ferrite magnetic material is single in electromagnetic performance, cannot stably and efficiently work in a multi-frequency-band complex electromagnetic environment and cannot meet the requirements of the fields of communication, radar, electronic countermeasure and the like for wide-frequency-band and high-performance magnetic materials can be solved.

The application relates to high-quality steel slag aggregate and a preparation method and application thereof, the method is a grading carbonization process, which comprises the following steps: (1) primary carbonization and reduction: taking molten steel slag in a state of 1300 DEG C-1500 DEG C as raw material, continuously introducing industrial waste gas into a hot steaming tank for carbonization in a water spraying cooling process for 8h-14h, meanwhile, making the diiron trioxide in the steel slag be reduced into iron single element and magnetite, and obtaining primary carbonized steel slag; the volume ratio of CO2 in the industrial waste gas is 20%-30%, and the volume ratio of CO is 30%-60%; (2) secondary carbonization: selecting the primary carbonized steel slag below 10mm in step (1) as aggregate, spraying the steel slag aggregate according to a preset spraying amount in a closed container, maintaining the pressure in the closed container as 0.3-0.5 Mpa, continuously introducing the same industrial waste gas into the closed container for secondary carbonization, and making the free calcium oxide content in the steel slag aggregate be lower than 3%; and magnetically selecting the high-quality steel slag aggregate after secondary carbonization. According to the method, the high-quality steel slag aggregate meeting the relevant technical requirements can be prepared within 24h, and is used for preparing asphalt concrete.

The invention relates to the technical field of waste acid resource utilization, and provides a method for producing iron oxide black and manganese carbonate by using iron-containing waste hydrochloric acid, which comprises the following steps: S1, adding ferrous oxide waste mud into ferrous chloride-containing waste hydrochloric acid, and extracting to obtain an organic phase and a water phase; s2, hydrochloric acid and first manganese oxide mineral powder are added into the 70 wt% water phase, and first filtrate and first filter residues are obtained; s3, adding a first alkaline material into the first filtrate to obtain a ferric oxide and manganous chloride solution; s4, mixing ferric oxide with the remaining water phase, and adding a second alkaline material to obtain iron oxide black; s5, manganese dioxide mineral powder and sodium sulfide are added into the manganous chloride solution, and second filtrate and second filter residues are obtained; and S6, adding sodium carbonate into the second filtrate to obtain a manganese carbonate and sodium chloride solution. According to the technical scheme, the problems of low purity and poor resource utilization effect of the iron oxide black obtained from the iron-containing waste hydrochloric acid in related technologies are solved.

The invention discloses a K-type phosphate cement-based anchoring agent and a preparation method thereof. The K-type phosphate cement-based anchoring agent comprises the following components: a cementing material, a curing agent, an early strength agent, a filler and water, wherein the cementing material is prepared from magnesium oxide, ferric oxide and ferrous oxide through high-temperature firing. According to the invention, phosphate cement is modified, and the early strength agent and the filler are introduced, so that the K-type anchoring agent which is suitable for coal mine use is developed, and the anchoring agent has the advantages of a cement-based anchoring agent and a resin-based anchoring agent, namely, the anchoring agent is safe, low in cost, high in drawing resistance, good in early performance, good in weather resistance and the like.

The invention discloses a method and a system for separating and recovering phosphorus and iron in a phosphorus-containing iron compound, and relates to the technical field of solid waste utilization. The method comprises the following steps: obtaining a crushed phosphorus-containing iron compound and a solid alkaline substance; the crushed ferrophosphorus-containing compound and the crushed solid alkaline substance are taken and placed in a reaction furnace, the ferrophosphorus-containing compound and the solid alkaline substance are fused and react to obtain a first mixed material, and the dosage of the solid alkaline substance is 1-1.2 times of the theoretical molar dosage; adding water into the first mixed material for leaching to obtain a first solid-liquid mixture, and performing solid-liquid separation on the first solid-liquid mixture to obtain a first filter cake and first filtrate; washing and drying the first filter cake to obtain a ferric oxide product; evaporating, concentrating, crystallizing and drying the first filtrate to obtain a phosphate finished product. The method provided by the invention has the advantages of environmental protection and high product quality.

The application provides a method for preparing a magnetic heterostructure material of magnetite-graphene and application of the magnetic heterostructure material in a directional heat-conducting composite material, and belongs to the technical field of composite materials. The method comprises the following steps: (1) slowly adding a sodium hydroxide solution into a ferric chloride solution under water bath condition to prepare a ferric hydroxide gel, and sequentially performing drying and aging, centrifugation, cleaning and freeze drying on the gel to obtain a ferrous oxide nanocrystal; (2) adding the ferrous oxide nanocrystal, graphene and dopamine hydrochloride into a Tris buffer solution and fully stirring, and performing multiple centrifugation, cleaning and freeze drying to obtain ferrous oxide-dopamine-graphene; and (3) performing calcination reduction on the ferrous oxide-dopamine-graphene to obtain the magnetic heterostructure material of magnetite-graphene. The magnetic heterostructure material prepared by the method can be applied to the preparation of the directional heat-conducting composite material as a heat-conducting filler, and has the advantages of high operability, low cost and the like.

The application discloses a preparation method of a ferroferric oxide-sepiolite (Fe2O3-SEP) catalyst for CO2 amine solution desorption, wherein the catalyst is obtained by loading metal oxides on sepiolite through an impregnation method. The method comprises the following steps: firstly, magnetically stirring and impregnating a metal nitrate solution and sepiolite in a water bath, then performing suction filtration, drying, grinding and calcination to obtain the supported Fe2O3-SEP catalyst. The obtained catalyst is used for desorption of saturated amine-rich solution, the amine-lean solution after desorption is cooled, the CO2 loading amount of the amine-lean solution is titrated, CO2 is introduced again for absorption, and the amine-lean solution is recycled for 4-5 times. Compared with existing catalysts, the catalyst has the advantages of wide raw material distribution, low price, simple preparation process, no other by-products, stable catalytic performance and no influence on CO2 absorption performance of the amine solution.

The invention discloses a metal oxide composite sodium ferric sulfate positive electrode material as well as a preparation method and application thereof, and belongs to the technical field of sodium ion battery positive electrode materials. The metal oxide composite sodium ferric sulfate positive electrode material comprises the following raw materials in parts by mass: 1-20 parts of sodium sulfate, 2-40 parts of ferrous sulfate, 0.05-1 part of an antioxidant, 0.05-1 part of a carbon source and 0.01-2 parts of metal oxide, the metal oxide is at least one of ferrous oxide, ferric oxide, ferroferric oxide, manganese oxide, manganese dioxide, cobalt oxide, cobaltosic oxide, cobaltic oxide, vanadium monoxide, vanadium dioxide, vanadium trioxide, vanadium pentoxide, nickel oxide and copper oxide. The invention also discloses a preparation method and application of the metal oxide composite sodium ferric sulfate positive electrode material. The method provided by the invention can solve the problems of low conductivity and specific capacity of the existing sodium ferric sulfate positive electrode material, and has the advantages of low cost, strong process adaptability and wide application prospect.

The invention discloses a far infrared material and a manufacturing method thereof. The manufacturing method of the far infrared material comprises the following steps: grinding titanium dioxide and ferric oxide into first slurry; grinding kaolin, talc and aluminum oxide into second slurry; mixing the first slurry and the second slurry to form a third slurry; drying and sieving the third slurry to obtain powder; and molding the powder, and sintering the molded powder at a temperature of 1250-1400 DEG C to obtain the far infrared material. Therefore, the far infrared ray emissivity of the manufactured far infrared ray material in the wavelength range which can be absorbed by a human body can reach 0.949309, and no radiation element exists.

The application discloses a preparation method of a ferroferric oxide electrode material and application of the ferroferric oxide electrode material in an electrode, a device and a method for photoelectrocatalytic degradation of phenol. The electrode is prepared by in-situ adhering a layer of uniform iron-containing intermediate on the surface of a metal mesh through thermal decomposition of an iron-containing compound, and converting the layer of the iron-containing intermediate into ferroferric oxide through heat treatment. The obtained electrode can realize photoelectrocatalytic complete degradation of water-phase phenol under irradiation of ultraviolet light, and the performance is far higher than that of a ferroferric oxide electrode based on a metal sheet and a ferroferric oxide electrode based on FTO under the same conditions. The preparation method has mild conditions, a simple and controllable process, and high raw material utilization rate; the prepared electrode is low in price, environment-friendly and non-toxic, uniform and dense in the film layer, high in catalyst loading per unit area, and can simultaneously improve the two problems of poor light condition and low material exchange rate existing in a photoelectrocatalytic water-phase phenol degradation system, and has high practical application value.

The invention relates to the field of refractory materials, in particular to a high-erosion-resistance refractory material based on boron nitride modification and a preparation method of the high-erosion-resistance refractory material. The problem that an existing refractory material is poor in erosion resistance is solved. The refractory material is prepared by taking zirconium dioxide, silicon dioxide, calcium oxide, ferric oxide and aluminum oxide as matrixes and adding samarium lanthanum magnesium aluminum composite gel powder and boron nitride loaded chromium sesquioxide, magnesium nitrate, aluminum nitrate, samarium nitrate, lanthanum nitrate and citric acid form gel, high-temperature treatment is performed to obtain the samarium lanthanum magnesium aluminum composite gel powder, and the samarium lanthanum magnesium aluminum composite gel powder is added to the boron nitride loaded chromium sesquioxide. Boron nitride is loaded with chromium sesquioxide after being treated by tannic acid, the corrosion resistance of the material is enhanced through the synergistic effect of all the components, and the material is suitable for high-temperature furnaces, high-temperature reactors and other industrial environments needing high-temperature resistance and high corrosion resistance.

The present invention relates to the technical field of coatings, and specifically relates to a wear-resistant coating and a preparation method thereof, comprising the following raw materials: a solvent, a modified resin, a filler, a dispersant, an antifoaming agent, a hardening agent, and a curing agent; the modified resin is prepared from oil-repellent particles, B resin, and a silane coupling agent; the oil-repellent particles are prepared from silicon dioxide, tetraethyl orthosilicate, 1H,1H,2H,2H-heptadecafluorodecyltrichlorosilane, and diatomaceous earth, and it can improve the oil resistance of the coating; the filler is obtained by mixing modified graphite, silicon carbide, silicon dioxide, molybdenum disulfide, and iron(III) oxide in a specific ratio, and it can improve the self-lubricity, mechanical properties, and oil resistance of the coating; the hardening agent is pentaerythritol tetrakis(3-mercaptopropionate) grafted with 1H,1H,2H,2H-heptadecafluorodecyl acrylate, and it will undergo chemical cross-linking with other components to improve the wear resistance of the coating; therefore, the wear-resistant coating of the present invention has good oil resistance, wear resistance, and broad application prospects.

The invention discloses a rare earth doped iron oxyhydroxide / ferric oxide-three-dimensional graphene composite material and a preparation method thereof, the material is x% RE-FeOOH / Fe2O3 (at) 3D Gr, x is the molar ratio of rare earth ions to iron ions, the value range of x is 1-8.5, RE is one of rare earth elements Ce, La, Sm, Nd or Y, and RE is one of rare earth elements Fe, La, Sm, Nd or Y; the preparation method comprises the following steps: preparing a mixed solution A from an iron salt, a rare earth salt and an alkaline solution, adding a complexing agent into a graphene oxide solution to prepare a mixed solution B, performing ultrasonic treatment on the two solutions, mixing, adding a reducing agent, performing ultrasonic treatment again, and finally performing hydrothermal treatment, washing, freeze drying and low-temperature sintering. Rare earth ions can induce oxygen vacancies, increase active sites and promote ion transmission, the maximum mass specific capacitance of the material under 0.5 A / g reaches 1218.7 F / g, and the maximum capacitance retention rate of a flexible supercapacitor assembled by the material is 97% after 5000 times of charging and discharging.

The invention discloses a high-strength wear-resistant thermal-insulation refractory material for dry quenching and a preparation method thereof, and relates to the technical field of refractory materials, the high-strength wear-resistant thermal-insulation refractory material comprises the following raw materials by weight: 60-70 parts of silicon carbide, 0.5-1 part of ferric oxide, 10-15 parts of alumina, 5-7 parts of an auxiliary agent, and 8-12 parts of mullite powder. According to the refractory material for the dry quenching, by using a proper amount of the auxiliary agent and cooperating with the silicon carbide, the mullite powder, the ferric oxide and the aluminum oxide, the thermal insulation performance of the prepared refractory material for the dry quenching meets the use requirements, and meanwhile, the refractory material for the dry quenching is endowed with high normal-temperature compression strength, high-temperature breaking strength and wear resistance.

The invention discloses a heat-resistant and aging-resistant modified silicone rubber material, which is prepared from the following raw materials in parts by weight: 100 parts of vinyl silicone rubber, 3 to 12 parts of octahydro polyhedral oligomeric silsesquioxane, 6 to 18 parts of modified white carbon black, 3 to 12 parts of nanoscale tin oxide, 3 to 5 parts of ferric oxide, 1 to 10 parts of tetraethoxysilane, 0.5 to 5 parts of dibutyltin dilaurate, 0.5 to 5 parts of 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 0.5 to 5 parts of 2, 3-pentanediol monoisobutyrate, 0.5 to 5 parts of 2, 3-pentanediol monoisobutyrate, 0.5 to 5 parts of 2, 3-pentanediol According to the invention, octahydro polyhedral oligomeric silsesquioxane is introduced into vinyl silicone rubber through a hydrosilylation reaction to form a cross-linked network structure, so that the heat-resistant temperature of the material is effectively improved; nanoscale tin oxide and ferric oxide respectively inhibit the oxidation process and high-temperature oxidation reaction of the side chain of the silicone rubber and delay the aging process of the silicone rubber; the modified white carbon black promotes the compatibility with the vinyl silicone rubber through the ionic liquid, so that the mechanical property and the thermal stability of the material are further enhanced, and the material is endowed with excellent heat resistance and aging resistance while the silicone rubber keeps relatively high mechanical strength.

The application discloses an efficient treatment method of industrial waste salt, comprising the following steps: mixing the industrial waste salt with a certain proportion of functional particles, and performing microwave treatment; wherein the functional particles are composed of first functional particles and second functional particles; the first functional particles are selected from one or more of silicon carbide, diiron trioxide, titanium dioxide and zinc oxide; and the second functional particles are selected from one or more of 2,6-di-tert-butyl-p-cresol, hydroquinone, tert-butyl catechol and copper naphthenate. The functional particles used in the application have multiple functions such as microwave absorption, reaction catalysis, polymerization inhibition and antioxidation, etc. When the functional particles are mixed with the industrial waste salt and subjected to microwave irradiation, the organic and inorganic small molecules can be catalyzed to crack and generate gaseous small molecules, and meanwhile, the organic matters in the industrial waste salt can be prevented from polymerization, so that the increase of the content of organic polymers in the waste salt is avoided.

The invention belongs to the technical field of catalysts, particularly relates to an ammonia decomposition hydrogen production catalyst and a preparation method and application thereof, and aims at the technical bottlenecks that an existing iron-based catalyst is low in activity, poor in stability and the like in an ammonia decomposition reaction, a mesoporous material MCM-41 is innovatively adopted as a carrier, and iron trioxide is loaded for ammonia decomposition hydrogen production, so that the catalyst is prepared. The problems that an iron-based catalyst is low in catalytic activity and easy to sinter in the ammonia decomposition process are effectively solved, and an efficient and reliable catalyst solution is provided for industrial application of an ammonia decomposition hydrogen production technology.

The invention relates to the technical field of silicone rubber materials, and particularly discloses flame-retardant, high-temperature-resistant and high-strength silicone rubber and a preparation method thereof. The flame-retardant high-temperature-resistant high-strength silicone rubber comprises a component A and a component B. The component A comprises the following raw materials in parts by weight: 100 parts of base rubber, 20-30 parts of modified fumed nano-silica, 1-5 parts of cerium oxide, 1-3 parts of ferric oxide and 5-15 parts of a flame retardant, and the flame retardant comprises aluminum hydroxide and melamine cyanurate in a mass ratio of 10: (2-4); and the component B is prepared from 2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane. The flame retardance, high temperature resistance and high strength of the silicone rubber can be improved at the same time, and the application scene of the silicone rubber can be expanded.