158results about How to "The generation of solution" patented technology

A process for preparing nano-magnesium oxide by uniform deposition-supercritical CO2 drying method includes such steps as preparing magnesium hydroxide deposit in aqueous solution by uniform deposition method, displacing water from the deposit by alcohol, removing alcohol from deposit by supercritical CO2 drying method, separating alcohol for recovering it, cyclic use of CO2, and calcining the dried magnesium hydroxide.

The invention relates to a glue-free PVC (poly vinyl chloride) floor board, comprising a surface wear-resistant layer, a fabric layer and a bottom layer, wherein the bottom layer comprises an upper layer, a middle layer and a lower layer, the upper layer is prepared from the following raw materials in parts by weight: 140-170 parts of PVC powder, 700-900 parts of plasticizer and 5-7 parts of stabilizer, the middle layer is prepared from the following raw materials in parts by weight: 400-600 parts of PVC powder, 300-400 parts of plasticizer, 800-1000 parts of mountain flour and 9-13 parts of stabilizer, and the lower layer is prepared from the following raw materials in parts by weight: 800-1000 parts of PVC powder, 600-750 parts of plasticizer, 200-300 parts of mountain flour and 20-30 parts of stabilizer. The glue-free PVC floor board provided by the invention has skid resistance and good elasticity, is easy to construct and has low construction cost, and no glue is used. The invention also discloses a preparation method of the glue-free PVC floor board.

The invention belongs to a synthesizing method for medicine, and particularly relates to a method for synthesizing mometasone furoate or a monohydrate of the mometasone furoate. The method includes the steps that 8-DM serving as a first compound is used as an initial material, and the first compound and paratoluensulfonyl chloride are subjected to a sulfonylation reaction to generate a second compound; the second compound is not subjected to after-treatment and is subjected to a chlorination reaction with RCl (R is Li, Na, K and Et3N) to generate a third compound; the third compound is not subjected to after-treatment, a part of organic alkali is replenished, and the mixture and furoyl chloride are subjected to an esterification reaction to generate a fourth compound; the fourth compound is not subjected to after-treatment, acid adjustment is carried out, a large quantity of chlorine elements existing in a reaction system are used for a ring-opening reaction, and the mometasone furoate or the mometasone-furoate monohydrate is obtained. The method is simple in technology, mild in reaction condition, high in yield, low in cost, high in quality and raw-auxiliary-material using rate, free of genetic toxicity impurity generation and suitable for industrial production.

The invention belongs to the technical field of fertilizer, and more specifically relates to a tobacco special-purpose charcoal-based compound fertilizer, and a preparation method and an application method thereof. The tobacco special-purpose charcoal-based compound fertilizer comprises, by weight, tobacco straw, waste tobacco, pig manure, earthworm manure, vegetable waste, domestic garbage, nitrogen fertilizer, phosphate fertilizer, potassium fertilizer, trace element liquid fertilizer, a compound microbial agent, and an adhesive, and is prepared through a plurality of technologies. The tobacco special-purpose charcoal-based compound fertilizer is high in granulation rate, is capable of obviously improving fertilizer utilization rate, and is capable of improving soil acidifying and hardening after being applied to tobacco field, and increasing soil available nutrient content; the quality of the harvested tobacco leaves is improved obviously, the proportion of middle and upper-grade tobacco leaves is increased, the yield per mu and the output value per mu are obviously increased; and the tobacco special-purpose charcoal-based compound fertilizer is taken as a base fertilizer, onlyone time of application is capable of satisfying all the requirements of tobacco on nutrients in the tobacco growth period, reducing the using amount and the application frequency of traditional fertilizers; using is convenient; and labor is saved.

The invention discloses a preparation method of a machine tool slider by powder metallurgy. The method includes that the machine tool slider is made of, by weight percentage, 0.6-0.8% of graphite, 0.2-0.4% of silicon carbide powder, 0.4-0.6% of manganese, 0.2-0.4% of nickle, 0.2-0.4% of cerium, 0.2-0.4% of titanium, 0.4-0.6% of aluminum, 1-2% of zinc, 5-8% of copper, 1-2% of performance additive and the rest iron. By the added performance additive, superfine powder is provided in mixed raw materials and can fill gaps among large particles, so that apparent density of a mixture is improved; the superfine powder is mainly composed of nanoscale iron powder and calcium stearate, and the novel performance additive is obtained through auxiliaries like silane coupling agent, so that various physical characteristics like abrasive resistance of the machine tool slider is further improved; and polyethylene vinyl acetate and liquid paraffin serving as lubricant are added into the performance additive, so that effects, in mixing and pressing, of the performance additive are enhanced, compacting strength of a powder metallurgy structural member is substantially improved under same pressing pressure, particle combining forms and pore shapes of the raw materials are changed, and generation of cracks is avoided fundamentally.

A method for producing bone essence, bone protein, bone meal, meat bone meal, meat meal and refined oil by animal fresh bones. The invention solves the problems of environment pollution, low extraction yield, and addition of preservatives and mould inhibitors in the production of bone essence, bone protein, bone meal, meat bone meal, meat meal and refined oil. The method comprises the following steps: boiling fresh bones and water at a high pressure, separately storing bone oil, separately storing bone residue wastes, adding an enzyme, stirring, allowing the mixture to stand; performing high-pressure boiling after standing, adding a compound enzyme, stirring, allowing the mixture to stand, and freeze-drying the mixture into powder so as to obtain bone essence and bone protein; decoloring the bone oil with active carbon to obtain the refined oil, recovering wastes after decoloration by active carbon; sterilizing the bone residue wastes and the wastes after decoloration by active carbon, performing pulverization to obtain bone meal, meat bone meal, meat meal. The invention does not need the addition of additives of preservatives and mould inhibitors; the product can be stored for above three years at normal temperature; the invention prevents the problem of environment pollution; and the extraction yield of bone essence, bone protein, and refined oil is increased by 40% when compared with original yield.

Disclosed is a concrete impermeability test adopting rubber sleeve seal, which comprises an impervious instrument, impervious test pieces, rubber sleeves, and test piece sleeves. Each impervious test piece is sleeved by a sealing sleeve prepared by the rubber sleeve; the impervious test pieces sleeved by the rubber sleeves are pressed into the test piece sleeves; the test piece sleeves are in fastening connection with an operating table on the impervious instrument with nuts to protect the bottoms of the test pieces from water leakage to affect a test effect during a test process. The rubber sleeves are taken as sealing materials, and heating of test pieces and test moulds aren't needed. The rubber sleeves are simple and convenient to operate and high in work efficiency, and can be used repeatedly. The method is saved in cost, can protect the environment, and has a wide popularization value.

The manufacture method of pure pine fiber board comprises the following steps: (A) pre-steaming; (B) steaming; (C) hot-grinding; (D) drying; (E) applying adhesive, paraffin wax and white paste; (F) winnowing; (G) cold-pressing; and (H) hot-pressing and cutting to obtain final product. A wind feeding device comprises a cyclone separator (1), a feed pipe (2), a winnower (3), an exhauster (4), a cyclone separator (5) and wind pipes, a dust collector (6) and a valve (7), wherein the duct collector (6) is arranged on the wind pipe between the cyclone separator (5) and the winnower (3); the valve (7) is arranged on the wind pipe between the dust collector (6) and a winnower (3); and a cold wind inlet (8) is formed on the wind pipe between the valve (7) and the winnower (3). The pure pine fiber board manufactured by the method has the advantages of greatly improved strength and waterproof performance, pleasant smell of rosin and improved appearance quality. The wind feeding device is reconstructed to remarkably improve the product quality.

The invention discloses a warm-white high-color-rendering-index fluorescent ceramic for high-power LED/LD illumination, as well as a preparation method and application thereof. The fluorescent ceramichas a chemical formula of (Gd(1-x-z)LuxCez)3(Al(1-y)Gay)5O12:zCe<3+>, wherein x is the molar percentage of crystal structure stable ion Lu<3+> doped Gd<3+>, y is the molar percentage of crystal structure stable ion Ga<3+> doped Al<3+>, z is the molar percentage of Ce<3+> doped Gd<3+>, x is more than or equal to 0.05 and less than or equal to 0.15, y is more than or equal to 0.15 and less than orequal to 0.2, and z is more than or equal to 0.001 and less than or equal to 0.01; and a ceramic biscuit is molded and sintered by adopting tape casting and high-temperature solid phase reaction sintering. The transparent fluorescent ceramic material has an emission spectrum main peak of 575-580nm and half-width of 140-145nm, and realizes warm-white emission under excitation of high-power LED (350-500mA) or LD (4-10W), and has a color temperature of 2800-3000K and a color rendering index of 80-84; and the preparation process is simple, and the process is controllable.

The invention relates to a method for recycling organic tin in sucralose production. The method includes sucralose esterification reaction, dibutyltin oxide serves as a catalyst to take participate in the reaction to generate a sucrose-6-ester midbody, after a midbody solution is extracted through cyclohexane, organic tin acetic ester is dissolved in an extractant cyclohexane phase, a cyclohexane phase is extracted out, and cyclohexane is obtained through evaporation by means of a distillation still. The method is characterized by including the following steps that a, boiled cooling water is cooled to 50 DEG C, then pure water is added for stirring and washing, and stirring is carried out for one hour; b, bottom water is separated out, residues in the still are recycled organic tin acetic ester, and the residues are returned to an esterification reactor to take participate in the esterification reaction and be used repeatedly. The method has the advantages that the organic tin acetic ester is not degreased or dried and can be directly recycled and used repeatedly, so that zero emission is achieved, production cost is reduced, waste water generated in the organic tin recycling process is eliminated to the largest extent, production efficiency is greatly improved, and economic benefits are remarkable.

The invention relates to a method for producing plush roller brush, wherein said method comprises heating PP corn tube to fuse its outer surface, coiling the plush on the corn tube. The invention directly heats PP tube without adhesive, to fuse the outer layer with plush naturally, which will be fixed in cooled condition. The invention can avoid harmful gas and the solvent problem that drops plush. And the product has long service life and low cost.

A biologically fermented bacteriostatic agent provided by the invention adopts food materials as raw materials rich in source. A probiotic mixture and residues of ecological tofu production are added.Through a fermentation manner, effective bacteriostatic substances in the raw materials are fully released, and macromolecular substances in the raw materials are decomposed into small molecular substances and inorganic salts that are easily absorbed and utilized by plants, so that the bacteriostatic agent can effectively inhibit the growth and reproduction of harmful bacteria, and the small molecular substances and inorganic salts thereof can be used as biological fertilizers to provide nutrients required for crop growth. The bacteriostatic agent is prepared only from plants and is preparedthrough fermentation without addition of chemicals; the bacteriostatic agent is nontoxic and harmless, allows drug resistance of harmful bacteria to be not liable to generate, can improve environment,can balance microorganisms in the environment, and does not increase environmental burden. The raw materials are abundant, the cost is low, and the bacteriostatic effect is outstanding.

The invention provides a negative electrode. The negative electrode comprises a first negative electrode active material, a conductive network structure with holes and a second negative electrode active material positioned in the holes, the second negative electrode active material is lithium metal, and the lithium metal is deposited in the conductive network structure and is not separated out from the surface of the negative electrode. The invention further provides a lithium ion secondary battery comprising the negative electrode and a preparation method of the lithium ion secondary battery,excessive lithium ions of the positive electrode are separated out and deposited in holes of the negative electrode through a charging process, so that lithium metal and a negative electrode active material jointly form the negative electrode, and the problem of lithium separation on the surface of the negative electrode in a battery circulation process is solved; the formation of lithium dendrites is avoided, so that the safety of the battery is improved; meanwhile, the negative electrode has two charging and discharging forms of lithium metal and graphite with different mechanisms, so thatthe energy density and the cycle performance of the battery are improved.

The invention discloses a straw comprehensive utilization method comprising the following steps: 1, paper product production: (1) straw cutting off; (2) dry dedusting; (3) hot water extraction, countercurrent washing and sand removal; (4) cooking and hydrolyzing; (5) spraying and receiving; (6) multistage countercurrent washing; (7) high-concentration pulping; (8) low-concentration pulping; and (9) papermaking; 2, natural gas production: (1) anaerobic treatment; (2) aerobic treatment; and (3) biogas purification; 3, production of an organic fertilizer: (1) extracting chippings generated by drydedusting in the step 1, plant chippings filtered by hot water extraction countercurrent washing water in the step 1, and solids obtained by solid-liquid separation of multi-stage countercurrent washing water for fermentation production of the organic fertilizer; and (2) mixing the concentrated sludge produced by anaerobic treatment and aerobic treatment in the step 2 with air flotation dross andplant debris, and fermenting to produce the organic fertilizer. The straw comprehensive utilization method provided by the invention is environment-friendly, realizes process wastewater resource utilization, can improve the slurry self-production capability in China, alleviates the problem of lack of fiber raw materials in China, can effectively utilize crop straws, and increases agricultural income.

The invention relates to the technical field of sludge treatment, in particular to a sludge drying system based on biomass energy. The sludge drying system includes a precipitation device, a dehydration device and a drying device which are successively arranged, the precipitation device, the dehydration device and the drying device are connected in series by a conveying device, and the drying device is connected with a hot air device. The sludge drying system is optimized in technological process, sludge drying is carried out by adopting a mode of drying after mechanical dehydration, and gooddehydration effect can be realized; and clean energy is used, the hot air device does not pollute the environment in the process of heat production, at the same time, smelly gas generated in other processes is also solved, harmless treatment of sludge and recycling of resources are realized, and the purposes of energy saving, emission reduction and environmental protection are achieved.

A combined soda production with waste water is carried out by: 1) totally collecting waste carbureted ammonia water produced by melamine with constant pressure ammonium catalytic circulating method, ammonia content of carbureted ammonia water > 27%, carbon dioxide content > 33%, and water content < 40%; 2) separating dicarbonate to obtain mother liquor, making mother liquor I heat exchange with mother liquor II , and cold crystallizing separating out industrial ammonium chloride; 2) salting out semi-mother liquor II , adding sodium chloride, and salting out crystallizing separating to obtain agricultural ammonium chloride. It achieves low cost and no pollution.

The invention relates to a method for preparing a coating by 3D printing overlapping an electron beam. Metal or ceramic powder and metal/ceramic powder are printed on the surface of a base material layer by layer through 3D printing, layer-by-layer printing is carried out by a three-dimensional model according to the set layer thickness, and then the metal or ceramic powder and metal/ceramic powder on the surface of the base material are preheated to form a fusion layer. A heating device used for the preheating includes a high-frequency vibrator and an induction heating coil which are placed on a workbench, the high-frequency vibrator acts on the bottoms of the fusion layer and the base material, the induction heating coil is arranged around the base material for preheating, after preheating is carried out, the fusion layer is melted with the electron beam to form a metal/ceramic. composite coating, and finally the metal/ceramic composite coating is subjected to post-heat treatment through the induction heating coil. The product development cycle is greatly shortened, production rate is improved, and the production cost is reduced.

The invention discloses a method for producing ferrovanadium nitride by use of vanadium nitride powder. The method comprises the following steps: performing batch-grouping on the vanadium nitride powder according to 1-2 tons per batch, and then mixing; testing to obtain the contents of vanadium and carbon in each batch of the vanadium nitride powder; determining the ratio of the vanadium nitride powder, ferrous powder and vanadium oxide in raw materials according to test results of the vanadium nitride powder and requirements on target products, and then compounding according to the ratio of the raw materials; after compounding, continually performing secondary mixing; grinding materials subjected to secondary uniform mixing into 150 meshes or below, then canning, and placing into a pushed slab kiln; and firing to obtain target ferrovanadium nitride. Starting from the properties of the vanadium nitride powder, the method fires the vanadium nitride powder into the new product ferrovanadium nitride through combination reaction between vanadium, nitrogen and ferrum, meanwhile, the problem that qualified ferrovanadium nitride cannot be produced by the vanadium nitride powder with high carbon content, the finally obtained ferrovanadium nitride product conforms to the GB/T30896-2014 ferrovanadium nitride national standard requirements, and the difficult problem of redundancy of the vanadium nitride powder is solved.

The invention discloses a sample plate combination for online overlaying of a star wheel tooth plate. The sample plate combination for online overlaying of the star wheel tooth plate comprises outer sample plates and an inner sample plate, wherein the two outer sample plates are fixedly arranged on two sides of the star wheel tooth plate, and are used for comparing and molding when overlaying is carried out on the star wheel tooth plate; and the inner sampling plate is inserted into a tooth groove of the star wheel tooth plate, and is used for inspecting a tooth profile outline of the star wheel tooth plate before and after welding. The invention further discloses an online overlaying method of the star wheel tooth plate. According to the sample plate combination for online overlaying of the star wheel tooth plate, and the online overlaying method provided by the invention, the size restoration of the worn tooth plate can be realized without disassembling the star wheel tooth plate, the installation problem during a tooth plate disassembling and assembling process is avoided, and the overhaul time is saved.