45 results about "Ferrosoferric Oxide" patented technology

The invention relates to metal-treated particles, methods for their preparation and methods for using metal-treated particles for, e.g., remediation of process waste-water, sewage, contaminated groundwater aquifers, and soil containing harmful contaminants. Another aspect of the invention relates to a metal-treated particle comprising a ferrosoferric oxide core and a metal supported on the core, where the average diameter or other largest transverse dimension of the core is from about 75 nm to about 990 nm and the amount of metal supported on the core is from about 8% to about 22% by weight, based on the weight of the metal-treated particle.

The invention relates to the field of precoated sand, in particular to ultra high temperature resistant cast steel precoated sand which is prepared from the following components: 85 parts of Hainan silica sand, 10-15 parts of ferrosoferric oxide sand, 1-3 parts of phenolic resin, 0.1-0.45 part of a curing agent, 0.1-0.3 part of ferrochromium mineral powder and 0.05-0.6 part of a lubricant. The particle size of Hainan silica sand is 65-80 meshes, the particle size of ferrosoferric oxide sand is 65-75 meshes, and the particle size of ferrochromium mineral powder is 200-320 meshes. Ferrosoferric oxide sand and Hainan silica sand are uniformly mixed, the surfaces of ferrosoferric oxide sand and Hainan silica sand are coated with ferrochromium mineral powder, and during the molten steel pouring process, molten steel is first in contact with ferrochromium mineral powder and rapidly forms a layer of steel film to effectively stop permeation of molten steel; and when a resin film is completely combusted, ferrosoferric oxide rapidly guides excessive heat out, that is, the double-chilling effect of ferrochromium mineral powder and ferrosoferric oxide sand is utilized to realize the purpose of obtaining ultra high temperature resistant cast steel precoated sand.

The invention discloses a preparation method for daunorubicin and 5-bromotetrandrine co-carried magnetic ferrosoferric oxide nanoparticles, and relates to a preparation process for magnetic drug-loaded nanoparticles. The method comprises the following steps: dissolving ferric sulfate, ferrous sulfate in water according to a certain ratio; adding ammonia water in the presence of nitrogen, and further adding oleic acid; carrying out steps of vigorous stirring, high temperature aging and the like to obtain oleic acid coated ferrosoferric oxide nanoparticles; modifying the resulting ferrosoferric oxide nanoparticles through a proper amount of PluronicF127 to obtain the blank magnetic ferrosoferric oxide nano-carrier; adding the blank magnetic ferrosoferric oxide nano-carrier to a methanol solution comprising daunorubicin and 5-bromotetrandrine, then carrying out steps of vigorous stirring overnight, washing through the water, and magnetic separation to obtain the daunorubicin and 5-bromotetrandrine co-carried magnetic ferrosoferric oxide nanoparticles.

Belonging to the technical field of water treatment, the invention relates to a main chain type imidazole salt ionic polymer material for detection and separation of hexavalent chromium anions in an aqueous solution. Quaternization reaction is carried out on a poly-imidazole monomer and poly-benzyl halide to obtain the main chain type imidazole salt ionic polymer with fluorescent properties. The polymer can utilize fluorescence quenching phenomenon to detect hexavalent chromium anions in an aqueous solution, and also can achieve rapid adsorption through ion exchange. Ferrosoferric oxide particles can be added in the preparation process of the imidazole salt polymer to obtain a magnetic composite material with the imidazole salt ionic polymer as the shell and ferrosoferric oxide as the core, the material also can be used for rapid adsorption of hexavalent chromium anions in water, and also can be easily separated from water under the action of an external magnetic field. The core-shell structure composite material also has good regeneration and recycling properties. In addition, the imidazole salt polymer material can also be extended to removal of other pollutant anions in water.

The invention discloses a method for preparing a reduced graphene oxide/nanometer ferrosoferric oxide composite magnetic adsorbent. The method comprises the steps: (1) arranging a reactant system, mixing uniformly to obtain a reactant mixed solution, wherein the reactant system comprises water/an ethylene glycol binary solvent, graphene oxide, ferric chloride hexahydrate, sodium citrate and sodium acetate; (2) preparing the composite magnetic adsorbent by a water/ethylene glycol co-heating method. The invention improves a traditional solvothermal method, and uses a water and ethylene glycol binary solvent heat method, thereby enabling the prepared rGO/Fe3O4 to have good magnetic response ability.

The invention relates to the technical field of biomedicine and discloses low-intensity focused ultrasound response type phase-change thrombolysis nano particles which comprise shell polylactic acid-glycolic acid copolymer PLGA, wherein ferrosoferric oxide Fe3O4 is embedded into the shell; perfluorohexane PFH is coated in the shell; the shell is connected with CREKA polypeptide targeting fibrin. The low-intensity focused ultrasound response type phase-change thrombolysis nano particles can solve the problem of an unsatisfactory thrombolysis effect caused by limited drug loading capacity or drug inactivity of drug-loading nano particles in the prior art.

The invention discloses a production method of tobacco slices. The method comprises the steps that a carboxymethyl cellulose solution and a ferrous sulfate solution are mixed together, so that carboxymethyl cellulose is subjected to sufficient coordination with ferrous ions to obtain carboxymethyl cellulose complex iron, then the mixing solution is evenly mixed with a sodium alginate solution to form a composite solution system, and ferrosoferric oxide nanoparticles are evenly generated in the composite solution system in the root position by adjusting the pH value and the oxidation of oxygen in the air; the mixing solution is subjected to crosslinking by a calcium chloride solution after being frozen and dried to obtain a plural gel, then the plural gel is dipped and extracted with tobacco stems and tobacco powder, and filtered and pulped to obtain a sizing agent, and the sizing agent is mixed with the mixing solution to obtain slice paper bases; a dipping extraction solution of the tobacco stems and the tobacco powder is used for coating the slice paper bases, and the tobacco slices are obtained after the mixing solution is dried. The tobacco slices have the advantages of low waste gas content and smoke irritation and high flavor absorption comfort degree, and the sense quality of tobacco slice products is effectively improved.

The invention discloses a device for preparing magnetic nanoparticles through parallel high-temperature pyrolysis and an application. The device comprises a material mixing pretreatment and electric heating reactor and multiple parallel electric heating and program heating reactors, and one program heating reactor controls reaction temperatures and time simultaneously. The device can be used for batch preparation of ferrite magnetic nanoparticles such as ferrosoferric oxide, zinc ferrite, manganese-zinc ferrite and the like with a high-temperature pyrolysis method. According to the method, the problems that the reaction temperature is too high with the high-temperature pyrolysis method, and heat and mass transfer is not uniform and non-uniform sizes of the nanoparticles are easily caused through direct size increasing preparation are successfully solved through multiple parallel reactors. Reaction materials are pretreated in a uniform manner and have the temperature controlled through the uniform program, so that the consistency of reaction conditions is guaranteed, and high-quality magnetic nanoparticles can be obtained.

The present invention is a method for producing a fluid dynamic pressure bearing made of powder sintered metal and that grooves for generating dynamic pressure are formed on an inner peripheral surface and whose object is to facilitate forming a ferrosoferric oxide (Fe₃O₄) membrane on a surface of a bearing material, the method comprising compacting metal powder including at least not less than 70% by weight of particles with diameters of not more than 45 μm to gain a bearing material, sintering said bearing material, forming grooves for generating dynamic pressure on said sintered bearing material, and performing steam treatment to said sintered bearing material with said grooves to form a ferrosoferric oxide (Fe₃O₄) membrane on a porous surface of an inner surface or on porous surfaces of an inner surface and both end surfaces, so that gaps between particles become small because diameters of the particles of material powder of a powder sintered bearing material are approximately even and fine and are even small pores, as a result, sealing pores on the surface due to steam treatment is easy and dynamic pressure cannot be leaked.

The invention discloses a preparation method of double-layer Fe3O4@SiO2 magnetic composite nanoparticle. The ferrosoferric oxide nanoparticle is dispersed in trisodium citrate, treated in water bath,washed alternately with acetone and deionized water, and dried in vacuum to obtain ferric oxide particles; Fe3O4 particles are weighed and dispersed in ethanol solution, ethyl orthosilicate, ammonia water and water are added and react in a homogeneous reactor for 4 h to obtain a single-layer coated Fe3O4@SiO2 composite; the Fe3O4@SiO2 composite material is dispersed in ethyl alcohol, hexadecyl trimethyl ammonium bromide, ethyl orthosilicate, ammonia water and water are added and the raw materials react for 6 h in a homogeneous reactor, so as to obtain the double-layer coated Fe3O4@SiO2 magnetic composite nanoparticle. The invention adopts an improved Stober method to prepare double-layer Fe3O4@SiO2 magnetic composite nanoparticles, which have compact particle structure and good monodispersity.

The inventive concept provides an anti-corrosion material, an anti-corrosion layer made therefrom, and a cookware including the anti-corrosion layer. The anti-corrosion material comprises a plurality of anti-corrosion particles, each anti-corrosion particle comprises a metal material and a non-metal material bonded with the metal material through a binder, and the metal material comprises at least one of titanium, titanium alloy, stainless steel, nickel and nickel alloy. The non-metallic material comprises at least one of titanium oxide, titanium nitride, titanium carbide, ferroferric oxide, ferric oxide, aluminum oxide, an AT composite material and silicon oxide. An anti-corrosion layer formed by using the anti-corrosion material according to the inventive concept has the beneficial effects of tight combination with a base body and excellent anti-corrosion performance at the same time.

The invention relates to a shell-structure heat storage magnetic material and a preparation method thereof. The shell-structure heat storage magnetic material comprises a core body, a heat storage inner layer and a magnetic outer layer, wherein the core body is in a spherical shape, the heat storage inner layer wraps an outer layer of the core body, the magnetic outer layer wraps an outer layer ofthe heat storage inner layer, the material of the core body is n-octadecane, the material of the heat storage inner layer is a methyl methacrylate-methacrylic acid polymer, and the material of the magnetic outer layer is ferrosoferric oxide. High-efficiency heat storage is achieved by employing the n-octadecane and the methyl methacrylate-methacrylic acid polymer, the ferrosoferric oxide is synthesized on a surface of the methyl methacrylate-methacrylic acid polymer to form integration of heat storage and magnetic effect, the saturation magnetic intensity of the synthesized heat storage magnetic material is 12.5 emu.g<-1>, and the enthalpy can reach 152.2 J.g<-1>.

The invention belongs to the technical field of radar wave-absorbing materials and particularly relates to a high-temperature resistant radar wave-absorbing material based on a double-layer metamaterial and a preparation method of the high-temperature resistant radar wave-absorbing material. The high-temperature resistant radar wave-absorbing material is prepared from an inner dielectric layer, aninner resistor type high-temperature metamaterial layer, a middle dielectric layer, an outer resistor type high-temperature metamaterial layer and an outer dielectric layer in turn from inside to outside, wherein the inner resistor type high-temperature metamaterial layer is prepared from the following raw materials in parts by weight: polyphenylene sulfide, polytetrafluoroethylene, silicon nitride, ferrosoferric oxide, 2-hydroxypropyl acrylate, copper fiber and a lubricant; the outer resistor type high-temperature metamaterial layer is prepared from the following raw materials in parts by weight: polypyrrole, polytetrafluoroethylene, nano zinc oxide, barium lanthanum hexaboride, dimethylaminoethyl acrylate, calcium sulfate, copper fiber and a lubricant. The high-temperature resistant radar wave-absorbing material based on a double-layer metamaterial provided by the invention has the advantages of simple structure, wide wave-absorbing frequency band, strong wave-absorbing ability, lowdensity and high stability.

The invention discloses a laterite nickel ore processing method. The laterite nickel ore processing method comprises the steps that laterite nickel ores makes contact with carbon monoxide and conduct an reduction reaction and a carbonylation reaction in a multi-stage fluidization reactor, so that first mixed gas and residues containing ferrosoferric oxide are obtained; the first mixed gas is cooled so as to be separated, and thus liquid nickel carbonyl and second mixed gas are obtained; the liquid nickel carbonyl is decomposed, so that carbon monoxide and nickel are obtained; and the first mixed gas includes the carbon monoxide, carbon dioxide and the nickel carbonyl, and the second mixed gas includes the carbon monoxide and the carbon dioxide. According to the laterite nickel ore processing method, the technological process is short, energy consumption is low, and the nickel extraction efficiency can be improved significantly.

Shells of solar water tanks are generally made of colored steel plates and are economical, practical and attractive, however, the solar water tanks are basically mounted outdoors, the shells of the water tanks are easily affected by surrounding environments, then, protective coatings of the surfaces of the colored steel plates easily fall off, thus, the colored steel plates are corroded, and then, the durability and attractiveness of the water tanks are affected. Therefore, it is the general trend to research and develop a high-effective anticorrosive coating material. The invention relates to the field of preparation of coating materials and particularly relates to an anticorrosive coating material and a preparation method therefor. The anticorrosive coating material is prepared from the raw materials, including epoxy resin, unsaturated poly-vinegar resin, a reactive diluent, aluminum tripolyphosphate, micaceous iron oxide, iron oxide red, talcum powder, glass powder, nano-alumina, nano-titania, an anti-settling agent, a film forming agent, a thickener, an antifoamer and a leveling agent. The coating material disclosed by the invention is a solvent-free coating material and is resistant to environmental pollution; nano-materials are added into the formula, so that the compactness of the coating material is improved, and the water resistance and corrosion resistance are improved; and the production process is simple, the performance is excellent, and the coating material can resist the corrosion of various acids and bases.

The invention discloses an adsorbent as well as preparation, regeneration method and application thereof. The method for preparing the adsorbent comprises the following steps: mixing 1-3g/L graphene oxide dispersion liquid and 0.025-0.1mol/L ferrous sulfate solution and performing ultrasonic treatment to obtain a mixed solution; adjusting the pH value of the mixed solution to alkalinity, and performing co-precipitation treatment to obtain a three-dimensional graphene compound loaded with ferrosoferric oxide; heating the three-dimensional graphene compound loaded with ferrosoferric oxide to obtain the adsorbent with enhanced mechanical strength. The adsorbent prepared by the method has the advantages of strong adsorbability on such pollutants as PPCPs, high mechanical strength, easiness inregeneration and good catalytic performance.

The invention relates to a preparation method of magnetically separable recycling magnetic iron oxide (gamma-Fe2O3)/bismuth tungstate photocatalytic composite. With the synthesized ferrosoferric oxideand bismuth tungstate as raw materials, the composite is prepared by the processes of polyethylene glycol mixing, oxidation and the like; the composite has the advantages of high magnetic separationefficiency, photocatalysis reusing and the like. The preparation method comprises the following steps: (I) synthesizing ferrosoferric oxide and bismuth tungstate nanoparticles by a solvothermal process respectively; (II) adding polyethylene glycol, and uniformly mixing the ferrosoferric oxide and bismuth tungstate nanoparticles in an aqueous solution; (III) performing magnetic separation, sufficiently washing and drying at 80 DEG C; (IV) calcining the sample for 4 hours in air at 350 DEG C, wherein the ferrosoferric oxide is oxidized into gamma-Fe2O3, and a magnetically separable recycling magnetic gamma-Fe2O3/bismuth tungstate photocatalytic composite is obtained finally. The photocatalytic composite has the advantages of easiness in preparation process and recyclability.

A nanofiber mat comprises metal oxide nanoparticles distributed on surface of metal oxide nanofibers, wherein the nanofiber mat has a surface area at least 150 m²/g, and the metal oxide is selected from titanium monoxide TiO_x, wherein 0.65<x<1.25, niobium monoxide NbO_x, wherein 0.982<x<1.008, vanadium (II) oxide VO_x, wherein 0.79<x<1.29, iron (II) oxide Fe_xO, wherein 0.833<x<0.957, manganese (II) oxide Mn_xO, wherein 0.848<x<1.000, titanium suboxide, Ti_nO_2n-1, wherein n>1, molybdenum suboxide, Mo_nO_3n-1, wherein n>1, Mo_nO_3n-2, wherein n>1, and vanadium suboxide, V_nO_2n-1, wherein n>1. Cathodes, anodes and batteries are made using the nanofiber mat. Processes for producing the metal oxide nanofiber mat and an electrode including it are also provided.

The invention discloses environment-friendly healthcare shoe material beneficial to a human body. The environment-friendly healthcare shoe material comprises, by weight, 25-35 parts of soybean protein fibers, 30-45 parts of peanut fibers, 10-15 parts of alumina fibers, 5-8 parts of ferrosoferric oxide, 6-10 parts of activated light calcium carbonate, 7-12 parts of calcium metaphosphate, 2-6 parts of magnesium dihydrogen phosphate, 1-6 parts of titanium dioxide, 50-100 parts of sorbitol and 0.8-3.5 parts of zirconium silicate. The shoe material has the advantages that the shoe material can improve the microcirculation of the human body and increase multiple elements of the human body; plant fibers are added into the shoe material to allow the same to be environmentally friendly and good in healthcare function.

The invention relates to mixed concrete which is prepared from the following raw materials in parts by weight: 50-60 parts of asphalt, 10-15 parts of water glass, 30-48 parts of ferrosoferric oxide, 5-18 parts of mica powder, 8-12 parts of limestone, 7-12 parts of zinc oxide, 20-29 parts of perlite, 15-30 parts of coal ashes and 5-8 parts of butyl acrylate. According to the mixed concrete, cracking of the concrete can be prevented, the breaking strength and the toughness can be improved, and the mixed concrete has a limited crack width, has concrete surface crack resistance and anti-knock and fireproof ability, can be widely applied to concrete structures in the fields of construction, water conservancy, municipal traffic and ocean military industry.