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163results about How to "Realize industrialized continuous production" patented technology

Industrial production method and device of urea-formaldehyde slow-release compound fertilizer

The invention relates to an industrial production method and device of a urea-formaldehyde slow-release compound fertilizer and a device thereof. The industrial production method comprises the steps of adding water and oxidized starch to a reaction still and then pasting, adding urea of which the nitrogen content is 46wt% and formalin, stirring, dissolving and then adjusting the pH value to 8.5-8.8 by an alkaline matter, reacting at constant temperature of 60 DEG C to obtain reaction liquid; adjusting the pH value to 5.4-5.1 by the reaction liquid; reacting for 45 minutes at the constant temperature of 65-68 DEG C, then adjusting the pH value to 6.8-7.2, and terminating reaction to obtain the urea formaldehyde condensation product solution; mixing the urea formaldehyde condensation product solution with nitrogen, phosphorus and potassium materials, pelletizing, drying and cooling to below 35 DEG C, and screening to obtain the urea-formaldehyde slow-release compound fertilizer. The industrial production device of the urea-formaldehyde slow-release compound fertilizer is also provided by the invention. Urea formaldehyde is taken as a skeleton; rapid disintegration phenomenon of fertilizer particles caused by water absorption expansion is effectively prevented; the urea-formaldehyde slow-release compound fertilizer has good nutrient slow-release performance, and is high in pelletizing rate in the production process and strong in granule hardness, and the total nutrient content is improved.
Owner:河南豫邮金大地科技服务有限公司

Method for extracting scandium and other rare earth from zirconium oxychloride acid pickle

ActiveCN105256143AReduce lossesRealize impurity removal and purificationProcess efficiency improvementOXALIC ACID DIHYDRATEHydrometallurgy
The invention discloses a method for extracting scandium and other rare earth from zirconium oxychloride acid pickle. The method comprises the following steps that (1), the zirconium oxychloride acid pickle is subjected to floculation adsorption slag removing, scandium element enrichment, acid modulation and impurity removing, scandium element purification and rare earth recycling, and high-purity scandium strip liquor and extraction raffinate containing rare earth are obtained; (2), the high-purity scandium strip liquor is subjected to oxalic acid precipitation and high-temperature calcination to prepare high-purity scandium oxide; and (3), the extraction raffinate containing the rare earth is subjected to precipitation zirconium removing, extraction iron removing and carbonate adding reactions to obtain rare earth carbonate. The method belongs to the technical field of hydrometallurgy and waste acid treatment and comprehensive utilization. According to the method, the high-purity scandium oxide powder with the grade being above 99.9% can be obtained; and meanwhile, the other rare earth is recycled in a manner of rare earth carbonate enriched products, the total recycling rate of the rare earth is larger than 80%, the investment is small, the manual requirement is small, the handling capacity is large, and industrial continuous production can be achieved.
Owner:全南晶环科技有限责任公司 +1

Stacked composite anti-transpierce shoe midsole and method for manufacturing same

The invention discloses a chemical fiber long silk fabric/ ternary adhesive/short nonwoven fiber stacked composite anti-transpierce shoe midsole and a method for manufacturing same. The stacked composite anti-transpierce shoe midsole comprises various materials such as multi-layer high-strength low-stretching chemical fiber long silk fabrics, ternary adhesive, short nonwoven fabrics and the like, wherein the chemical fiber long silk fabric is the high-strength low-stretching type chemical fiber long silk compact textile, the ternary adhesive is the mixed solution consisting of high temperature-resistance graft chloroprene adhesive, latex and vulcanized mucilage, and the short nonwoven fiber is formed by sequentially mixing, carding, paving, puncturing and hot-pressing the PET staple fiber and polyester-based PES fiber. The preparation method adopts a way of single-layer fractioning and multi-layer compounding on the textile and uses the processes of hot-pressing as well as the slab vulcanization. The method can prepare the anti-transpierce shoe midsole of safety shoes, can prepare the anti-transpierce shoe midsole of the molding safety shoes particularly, and has the advantages of good anti-transpierce effect, flexibility and easy bend, firm combination with the sole, no lamination and the like.
Owner:THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME +1

Method of producing o-tert-butyl phenol and p-tert-butyl phenol through combination of rectification and crystallization

The invention discloses a method of producing o-tert-butyl phenol and p-tert-butyl phenol through combination of rectification and crystallization. The method comprises the steps that (1) an alkylatedproduct flow obtained through a reaction between phenol and isobutene is input into a first rectifying tower for rectification treatment, a first tower top material which contains the phenol and a light-component byproduct is extracted from the tower top, and a first tower bottom material which contains the o-tert-butyl phenol, the p-tert-butyl phenol and a heavy-component byproduct is extractedfrom the tower bottom; (2) the first tower bottom material is input into a second rectifying tower for rectification treatment, an OTBP product is extracted from the tower top, a second side-line material which contains the p-tert-butyl phenol is extracted from a side line, and a second tower bottom material which contains 2,4-di-tert-butyl phenol and a heavy-component byproduct is extracted fromthe tower bottom; and (3) the second side-line material is input into a crystallization unit, so that the p-tert-butyl phenol in the second side-line material is cooled and crystallized, and after impurities are separated, the temperature is increased for fusing and discharging to obtain a PTBP product. According to the method, through coupling of the rectification technology and the crystallization technology, the problem of eutectic point limitation can be broken, and the product purity is effectively improved.
Owner:WANHUA CHEM GRP CO LTD

Green and environment-friendly anti-ageing coating

InactiveCN106995642AEffectively control the degree of open loopEasy to processAnti-corrosive paintsEpoxy resin coatingsFiberEnvironmental resistance
The invention discloses green and environment-friendly anti-ageing coating. The green and environment-friendly anti-ageing coating is prepared from the following raw materials in parts by weight: 90 to 110 parts of waterborne resin, 3 to 7 parts of melamine, 15 to 25 parts of a starch compound, 12 to 18 parts of talcum powder, 8 to 16 parts of jute fibers, 4 to 8 parts of sepiolite powder, 5 to 9 parts of microencapsulated red phosphorus, 6 to 10 parts of pigment, 5 to 9 parts of zinc oxide, 12 to 14 parts of magnesium hydroxide, 6 to 8 parts of chlorinated paraffin, 8 to 14 parts of absolute ethyl alcohol, 25 to 35 parts of polyethylene wax, 4 to 8 parts of sodium dodecyl sulfate, 1 to 2 parts of an antibacterial agent, 1 to 2 parts of a mildew preventive, 1 to 2 parts of a de-foaming agent, 1 to 2 parts of a wetting agent and 40 to 80 parts of water. The green and environment-friendly anti-ageing coating has the advantages of strong adhesive force, uneasiness of becoming yellow and brittle, plump paint film, capability of inhibiting volatilization of toxic gas, extremely good anticorrosion performance, excellent comprehensive performance and long service life and can be widely used for producing and continuously replacing an existing material.
Owner:安徽三义和能源科技有限公司

Anti-hardening method of dry medlar fruits

ActiveCN103004976APrevent moisture absorption and compactionHigh medicinal valueFruits/vegetable preservation by coatingInsect pestMildew
The invention relates to an anti-hardening method of dry medlar fruits. The method comprises the following steps of: (1), selecting raw materials: selecting fresh medlars free from plant diseases and insect pests, mildew and damage as the raw materials; (2), drying: cleaning and eliminating waxy coatings of the selected fresh medlars, and drying till the moisture content is less than or equal to 13%, so that dry medlar fruits are obtained; (3), preparing wax: after mixing solid beewax and liquid paraffin, heating to melt, uniformly stirring to obtain liquid mixed wax, and preserving the liquid mixed wax at constant temperature of 50 DEG C, for future use; (4), coating: putting the dry medlar fruits in a coating machine, introducing hot air, uniformly spraying 0.5-1.0g of the liquid mixed wax if the dry medlar fruits are 100g according to the rotation speed of 80-120 rpm, and uniformly coating, so that coated dry medlar fruits are obtained; and (5), preparing a finished product: grading the coated dry medlar fruits according to quality requirements by adopting a conventional method, and packaging and inspecting to obtain the finished product. The anti-hardening method of the dry medlar fruits disclosed by the invention is capable of effectively preventing against moisture absorbing and hardening and is easy to control instantly, therefore, industrialized continuous production can be realized.
Owner:CHINA ACAD OF SCI NORTHWEST HIGHLAND BIOLOGY INST

Reflective heat-insulating flexible decorative sheet and preparation method thereof

The invention relates to the technical field of building materials, and discloses a reflective heat-insulating flexible decorative sheet. The decorative sheet comprises a surface layer and a back surface layer in sequence from the top to the bottom, wherein the surface layer comprises the following components in parts by weight: 0.5-30 parts of an acrylic emulsion or redispersible latex powder, 0-20 parts of reflective powder, 5-20 parts of hollow glass microbeads, 30-90 parts of an inorganic filler, 0-50 parts of an inorganic cementing material, 0-1 part of a water-retaining agent, 0-1 part of fibers, 2-30 parts of titanium white, and 0-5 parts of a pigment; and the back surface layer includes the following components in parts by weight: 0.5-30 parts of an acrylic emulsion or dispersiblepolymer powder, 0-20 parts of hollow glass microbeads, 0-1 part of a water retaining agent, 30-90 parts of an inorganic filler, 0-1 part of fibers, 0-30 parts of titanium white, and 0-5 parts of a pigment. The flexible decorative sheet disclosed by the invention has good reflective heat-reflective effects, is heat-preservation and thermal-insulation, has a simple production process, can realize industrialized continuous production, has low production costs and a wide application range, and can be widely used in the fields of fixture and decoration.
Owner:GUANGDONG PHOMI MCM CO LTD

A method of manufacturing a monovalent ion selective cation exchange membrane

A method of manufacturing a monovalent ion selective cation exchange membrane is disclosed. The method includes a step 1) of unwinding a polystyrene-polyethylene series cation exchange membrane dry roll at a constant temperature, spraying one surface of the roll with a pre-polymerization liquid containing a functional monomer, a crosslinking agent and an initiator, laminating the roll with polyester protective membranes at intervals, tightly compressing, and then rolling to obtain a coated cation membrane roll one surface of which is coated with the pre-polymerization liquid; a step 2) of heating the coated cation membrane roll in the step 1) in a constant-temperature oven, initiating polymerization, taking the coated cation membrane roll out, peeling the polyester protective membranes off, and rolling with a polypropylene separating screen in a loose and interval manner to obtain a screen-separated cation membrane roll; and a step 3) of submerging the screen-separated cation membrane roll in the step 2) into an aqueous solution of trimethylamine to perform a quaternization reaction, washing a product, then peeling the polypropylene separating screen off, and separately rolling a wet membrane, and then the monovalent ion selective cation exchange membrane is obtained.
Owner:QUZHOU LANRAN NEW MATERIAL CO LTD

Method for extracting scandium and other rare earths from zirconium oxychloride waste acid solution

ActiveCN105256143BReduce lossesRealize impurity removal and purificationProcess efficiency improvementSlagRare earth
The invention discloses a method for extracting scandium and other rare earth from zirconium oxychloride acid pickle. The method comprises the following steps that (1), the zirconium oxychloride acid pickle is subjected to floculation adsorption slag removing, scandium element enrichment, acid modulation and impurity removing, scandium element purification and rare earth recycling, and high-purity scandium strip liquor and extraction raffinate containing rare earth are obtained; (2), the high-purity scandium strip liquor is subjected to oxalic acid precipitation and high-temperature calcination to prepare high-purity scandium oxide; and (3), the extraction raffinate containing the rare earth is subjected to precipitation zirconium removing, extraction iron removing and carbonate adding reactions to obtain rare earth carbonate. The method belongs to the technical field of hydrometallurgy and waste acid treatment and comprehensive utilization. According to the method, the high-purity scandium oxide powder with the grade being above 99.9% can be obtained; and meanwhile, the other rare earth is recycled in a manner of rare earth carbonate enriched products, the total recycling rate of the rare earth is larger than 80%, the investment is small, the manual requirement is small, the handling capacity is large, and industrial continuous production can be achieved.
Owner:全南晶环科技有限责任公司 +1

Easily-degradable and recyclable paper and application thereof

The invention discloses easily-degradable and recyclable paper and an application thereof. The easily-degradable and recyclable paper is composed of a substrate and an external coating, wherein the substrate is composed of the following components in percentage by weight: 60-80 percent of inorganic powder, 15-35 percent of synthetic resin and 1-5 percent of auxiliaries; the external coating is made of one or a combination of more than one of EVA (Ethylene Vinyl Acetate), EAA (Ethylene Acrylic Acid), MPE (metallocene polyethylene), HDPE (high-density polyethylene), LDPE (Low-Density Polyethylene), MDPE (medium density polyethylene), LLDPE (linear low density polyethylene) and PP (Propene Polymer); the application refers to an application of the easily-degradable and recyclable paper in preparation of disposable food packaging containers. According to the easily-degradable and recyclable paper and the application thereof, the external coating and the substrate are respectively formed once, so that the manufacturing cost is reduced, the problem of compounding a residual solvent and the influence on factors, such as storage environment are foundationally eliminated, no harmful substance can be generated, and no environmental pollution and no three-waste emission are caused; the easily-degradable and recyclable paper can be completely recycled to be made into other plastic products after being used, so that energy sources are saved and the using cost is also reduced. The easily-degradable and recyclable paper is degradable, good in surface printing effect, low in production cost, high in opaqueness, completely recyclable and capable of realizing industrial continuous production.
Owner:云南昆钢石头纸环保材料有限公司
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