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52results about How to "Moderate grain" patented technology

Method for preparing sintered mixture from municipal sludge and ferrous iron containing metallurgical dust

ActiveCN101717853ARealize unified utilizationEfficient recyclingProcess efficiency improvementSludgeNew energy
The invention relates to a method for preparing a sintered mixture from municipal sludge and iron containing metallurgical dust, which belongs to the technical field of resource recycling of the municipal sludge and the iron containing metallurgical dust. The method comprises the following steps of: preparing raw materials from 5-50 percent by weight of municipal sludge and 50-95 percent by weight of iron containing metallurgical dust, adding 0-20 percent by weight of water into the raw materials, then mixing and granulating to produce a sintered granular material, and using the sintered granular material as the mixture to be mixed into a sintering working procedure, wherein the proportion mixed into the sintering working procedure is 0.5-10 percent by weight of the total sintered raw materials quality. The method has the advantages that the processing flow of the municipal sludge is transferred to the mature sintering process flow of ferrous metallurgy, avoiding the problems of new energy consumption, secondary pollution and the like caused in traditional landfill and sintering processes of the municipal sludge, thereby recycling effective elements in the metallurgical dust and the municipal sludge in the steel production flow, improving sintering production process conditions to a certain degree and improving the sintering production efficiency.
Owner:SHOUGANG ENVIRONMENTAL IND +1

Ternary integrated rubber latex agglomeration process

The present invention relates to a ternary integrated rubber latex agglomeration process, and belongs to the technical field of synthetic rubbers. According to the agglomeration process, a ternary integrated rubber latex is adopted as a raw material, sulfuric acid is adopted as a pH value adjusting agent, an ammonium sulfate aqueous solution is adopted as an agglomeration mother liquor, and a poly epichlorohydrin-dimethylamine and cellulose derivative complex is adopted as an agglomeration agent; and the steps comprise: adding the agglomeration agent to the agglomeration mother liquor, adding the raw material, adding the pH value adjusting agent, and carrying out agglomeration. According to the present invention, the composite agglomeration agent is used, such that the COD content in the production wastewater can be reduced during the ternary integrated rubber production; the composite agglomeration agent has good water solubility, and can be used within a wide pH value range; the particle size of the colloidal particles after the agglomeration is moderate, the average particle size is 0.5-2 cm, and the drying is easily achieved; and the metal-ion-free ammonium sulfate electrolyte is adopted as the agglomeration mother liquor, such that the ternary integrated rubber with characteristics of low metal ion content and low corrosion on metals can be produced.
Owner:CHINA PETROLEUM & CHEM CORP

Europium doped bismuth ferrite film, preparation method and application thereof

The invention discloses a europium doped bismuth ferrite film, which comprises a silicon substrate with lanthanum nickelate as the buffer layer and a target material with a composition formula of Bi1-xEuxFeO3 (with x being greater than or equal to 0 and smaller than or equal to 0.07). The target material is deposited on the substrate. The invention also discloses a preparation method of the europium doped bismuth ferrite film. The method consists of: cleaning the substrate, placing the target material and the substrate in a film coating chamber, adjusting the pressure to less than 5*10<-4>Pa, raising the temperature of the substrate to 700DEG C at a speed of 10DEG C per minute; adjusting the sputtering pressure to 10Pa, maintaining the state for 10min under 700DEG C and an oxygen pressure of 10Pa, making adjustment to invert the substrate and rotate the target material in forward direction, keeping a 6cm distance between the substrate and the target material, employing a pulse laser to conduct film deposition for 60min and performing heat preservation for 30min, then conducting cooling at a speed of 20DEG C per minute to 200DEG C, and taking out the product, thus obtaining the europium doped bismuth ferrite film. The preparation method provided by the invention has the advantages of easily controllable reaction process and easily available raw materials. The europium doped bismuth ferrite film has significantly improved crystallization properties and electric leakage properties, and a smaller optical band gap, thus improving the photovoltaic properties of BiFeO3 films. The europium doped bismuth ferrite film has wide application prospects.
Owner:EAST CHINA NORMAL UNIV

Preparation and matching improvement method of saline-alkali soil conditioner

The invention discloses a preparation and matching improvement method of a saline-alkali soil conditioner, which comprises the following steps of: S1, weighing raw materials in parts by mass: 200-320parts of residue of furfural, 110-120 parts of decomposed organic fertilizer, 50-65 parts of organic material, 70-80 parts of fly ash of a biomass power plant, 15-20 parts of inorganic fertilizer, 25-40 parts of amino acid and 5-10 parts of polyacrylamide; and S2, mixing the raw materials: placing the fly ash of the thermal power plant using biomass as a raw material into a vessel as a main material, adding the residue of furfural, the decomposed organic fertilizer, the organic material, the amino acid and the polyacrylamide, and then uniformly stirring. By means of the method, soil structureis effectively improved, mineral elements are slowly released, and utilization of the fertilizer is greatly improved; since a certain amount of the inorganic fertilizer is added, the soil moisture iskept to a certain extent, the soil aggregate structure is improved, the fertilizer efficiency is improved further; and moreover, a certain amount of nutrient substances can be provided for crops, so that the crop yield is increased, the economic benefit of farmland is improved, and the income of farmers is increased.
Owner:中国农业科学院西部农业研究中心

Stirring and crushing unit and 3D printing waste recovery device

The invention relates to the technical field of 3D printing, in particular to a stirring and crushing unit and a 3D printing waste recovery device. The stirring and crushing unit comprises a shell, arotating shaft and crushing assemblies. A feeding port and a discharging port are arranged on the shell. The rotating shaft is mounted in a vertical rotation manner. At least part of the rotating shaft extends into the shell. The number of the crushing assemblies is at least two. Each crushing assembly comprises a fixed cutter ring and a movable cutter ring which are used in cooperation. The fixedcutter ring is arranged on the inner wall of the shell. The movable cutter ring rotates along with the rotating shaft. The at least two crushing assemblies are arranged in an axially spaced manner. The working surfaces of one fixed cutter ring and the corresponding movable cutter ring are conical surfaces with a radial gap between; and the maximum radial gap and the minimum radial gap between thecutter rings of the at least two crushing assemblies sequentially narrow down downwards in the axial direction. The technical problem that in the prior art, particles obtained after waste is crushedare large in size, and subsequent processing is inconvenient to carry out is solved.
Owner:JIANGSU UNIVERSITY OF TECHNOLOGY

Spherical tantalum powder as well as preparation method and application thereof

The invention discloses spherical tantalum powder and a preparation method and application thereof, and relates to the field of metal powder preparation. The preparation method comprises the steps of raw material weighing, briquette preparation, tantalum strip sintering, primary electron beam smelting, secondary electron beam smelting, hydrogenation, tantalum ingot smashing, dehydrogenation, hydraulic classification, drying, heating treatment and mixing, an oxygen content of the prepared spherical tantalum powder is smaller than or equal to 150 ppm, a carbon content is less than or equal to 20 ppm, an iron content is less than or equal to 10 ppm, and the electrical property is that a working voltage of a liquid tantalum capacitor is 75-150 V; a specific capacitance CV of an anode of the capacitor is 2000-4000 [mu] FV/g; and a leakage current is less than or equal to 4.5 * 10 <-4 > [mu] A/[mu] FV, and a breakdown voltage is greater than or equal to 350 V. The tantalum powder has proper particles and pore size distribution and impregnation characteristics, a conductive polymer can enter the anode more easily, more charges are led out, and the capacitance of the anode is higher. And meanwhile, in the anode forming process, an oxidation film grows more uniformly, the leakage current is smaller, and the breakdown voltage is higher.
Owner:炎陵龙翔钽铌新材料有限责任公司

Method for extracting diamond abrasives from silicon carbide crystal grinding waste materials

The invention discloses a method for extracting diamond abrasives from silicon carbide crystal grinding waste materials. The method comprises the following steps that silicon carbide crystal grinding waste materials are added into sulfuric acid solution with the concentration being 10 to 20 percent to be at least soaked for 24 hours, so the silicon carbide crystal grinding waste materials and the sulfuric acid solution take complete reaction and are then subjected to still standing and sedimentation; supernatant after the still standing sedimentation is poured out, and deionized water is used for diluting the precipitates after the still standing sedimentation for 3 to 5 times; the obtained mixture is placed into a baking oven to be subjected to baking treatment; and the obtained mixture is placed into a tubular furnace to be subjected to constant temperature treatment for 1 to 3 hours after being heated to the preset temperature in the air under the temperature condition being 520 to 750 DEG C, and the required diamond abrasives are obtained. The method for extracting diamond abrasives from silicon carbide crystal grinding waste materials provided by the invention can overcome the defects of energy source waste, too small diamond particle granularity, high enterprise production cost and the like in the prior art, and the advantages of energy source saving, proper diamond particle granularity and low enterprise production cost can be realized.
Owner:XINJIANG TANKEBLUE SEMICON

Metal anticorrosive paint and preparation method thereof

The invention discloses a metal anticorrosive paint and a preparation method thereof. The metal anticorrosive paint is prepared from the following components in parts by mass: 10 to 15 parts of butylmethacrylate; 4-5 parts of cyclohexanone, 3-4 parts of titanium dioxide, 1-2 parts of an epoxy resin curing agent; 3 to 6 parts of propylene glycol phenyl ether; 10 to 15 parts of pentaerythritol; 8 to 15 parts of a pigment and filler; 5-6 parts of polyether silicone oil, 1-2 parts of polytetrafluoroethylene wax, 1-2 parts of a titanate coupling agent, 4-6 parts of a leveling agent, 1-2 parts of zinc phosphate, 15-25 parts of butyl acetate, 6-12 parts of graphite, 8-10 parts of hydroxypropyl methyl cellulose, 2-3 parts of xylene, 35-50 parts of a thermosetting high-salt resin and 15-25 parts of novolac epoxy resin and chlorinated polyether resin. The thermosetting high-salt resin has the characteristics of curing crosslinking and infusibility of a coating after crosslinking, an infusible hard-texture coating can be formed after a curing agent with a crosslinking reaction is added and heated, and the coating prepared from the thermosetting high-salt resin cannot be softened like a conventional thermoplastic coating under the condition of high temperature, and is good in stability.
Owner:苏州拓洁环保工程有限公司

A kind of europium-doped bismuth ferrite thin film and its preparation method and application

The invention discloses a europium doped bismuth ferrite film, which comprises a silicon substrate with lanthanum nickelate as the buffer layer and a target material with a composition formula of Bi1-xEuxFeO3 (with x being greater than or equal to 0 and smaller than or equal to 0.07). The target material is deposited on the substrate. The invention also discloses a preparation method of the europium doped bismuth ferrite film. The method consists of: cleaning the substrate, placing the target material and the substrate in a film coating chamber, adjusting the pressure to less than 5*10<-4>Pa, raising the temperature of the substrate to 700DEG C at a speed of 10DEG C per minute; adjusting the sputtering pressure to 10Pa, maintaining the state for 10min under 700DEG C and an oxygen pressure of 10Pa, making adjustment to invert the substrate and rotate the target material in forward direction, keeping a 6cm distance between the substrate and the target material, employing a pulse laser to conduct film deposition for 60min and performing heat preservation for 30min, then conducting cooling at a speed of 20DEG C per minute to 200DEG C, and taking out the product, thus obtaining the europium doped bismuth ferrite film. The preparation method provided by the invention has the advantages of easily controllable reaction process and easily available raw materials. The europium doped bismuth ferrite film has significantly improved crystallization properties and electric leakage properties, and a smaller optical band gap, thus improving the photovoltaic properties of BiFeO3 films. The europium doped bismuth ferrite film has wide application prospects.
Owner:EAST CHINA NORMAL UNIV

Concentration device for colloidal solution

The invention relates to a concentration device for a colloidal solution. The device is characterized by comprising a total liquid inlet pipe, a total liquid outlet pipe and four filtering cylinders.A cabin wall is arranged in each filtering cylinder, each filtering cylinder is divided into a filtering cabin and a water-permeable cabin through the corresponding cabin wall, and each filtering cabin is provided with a liquid inlet pipe and a liquid outlet pipe; the liquid inlet pipes are connected with the total liquid inlet pipe, an electric colloid discharging valve is connected to each liquid outlet pipe, and multiple ultrafiltration core pipes are arranged in the filtering cabins; the two ends of each ultrafiltration core pipe penetrate through the cabin walls and enter the water-permeable cabins, and an electrical conductivity detector is arranged in each filtering cabin; each water-permeable cabin is provided with a purification liquid outlet. The concentration device for the colloidal solution has the advantages that the automation degree is high, by adopting multiple filtering cylinders, continuous filtering can be continuously conducted in turn, the obtained colloidal silica is large in particle and high in concentration, and the device has high social benefits and wide market prospects.
Owner:湖北金伟新材料有限公司
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