34results about How to "Solve refractory" patented technology

The invention relates to a method for preparing water glass by utilizing waste lead-containing glass and separating a lead-containing compound. The method comprises the following steps of: firstly, making the lead-containing glass of an abandoned cathode-ray tube (CRT) into water glass fusion cake, hydrolyzing the fusion cake, and separating hydrolysate to obtain a water glass solution; then adding an additive to convert lead dissolved in the water glass into lead sulphide, separating and collecting lead sulphide sediment to obtain a lead-free potassium or sodium water glass solution, further treating dissolved residue to convert the lead-containing compound in the residue into lead sulphide, and recycling lead sulphide in the hydrolysis residue by adopting a floatation method. The method disclosed by the invention has the advantages that silicon, potassium and sodium ingredients in the lead-containing glass of the abandoned CRT can be converted into the water glass, recycling of the lead-containing compound is solved; the water glass is a basic inorganic chemical industry product with wide application range; and recycling of the lead-containing compound is solved, the recycled lead-containing compound can be taken as a raw material for lead smelting, and recycling of lead resource is realized.

The invention discloses a smelting method of a chromium-molybdenum-copper-nickel-tin-antimony low-alloy wear-resistant cast iron, which comprises the following steps: raw material weighing: preparing and weighing raw materials and alloys according to the prescribed material specifications and weight proportion; smelting: sequentially adding the materials according to the technical charging sequence, and melting, wherein refractory molybdenum iron, chromium iron and pure nickel are added in the middle of the pig iron batch charging process, and scrap steel is added; component adjustment: adding silicon iron and manganese iron to adjust to acceptable components, heating, and adding a copper block which can be easily damaged by fire; and late inoculation in casting ladle: before tapping and after preheating the casting ladle, adding a tin block (accounting for 0.05% of the raw materials) and an antimony block (accounting for 0.01% of the raw materials) to the bottom of the ladle, and adding late inoculation silicon granules into the molten iron in the ladle in the casting process. The method solves the problem that the high-melting alloy added after all the iron liquid is completely molten is refractory, is capable of shortening the melting time and enhancing the smelting efficiency, promotes the formation of the fine lamellar pearlite, and ensures the element components, mechanical properties and metallurgical structure of the casting to simultaneously satisfy the requirements.

The invention relates to a coating material and a preparation method thereof, particularly a recyclable coating material and a preparation method thereof. The coating material is composed of the following components in parts by weight: 100 parts of corn starch, 8-16 parts of carboxyethyl cellulose, 3-8 parts of alkyd resin, 12-20 parts of low density polyethylene resin, 3-8 parts of glycerol, 4-10 parts of calcium stearate, 1-5 parts of liquid paraffin, 1.0-1.6 parts of calcium propionate, 1.2-1.8 parts of titanium white, 0.5-0.8 part of reinforced modifier, 0.1-0.5 part of stabilizer and 0.2-0.6 part of initiator. The coating material solves the problem of low degradability of the coating material in the prior art, implements recycling, protects the environment and saves the resources.

The invention discloses a double-function mercapto Schiff base metal organogel-nanometer composite material, and a preparation method and applications thereof. The double-function mercapto Schiff basemetal organogel-nanometer composite material AgNPs@Ag(I)-MTMP contains silver nanometer particle AgNPs, Ag(I)-MTMP, and a solvent; AgNPs is adsorbed by Ag(I)-MTMP, and the solvent is coated by Ag(I)-MTMP through hydrogen bonds and molecular effect; the chemical structure of Ag(I)-MTMP is [Ag(MTMP)]n(L)n, [Ag(MTMP)]n<n+> structure is represented by formula I, wherein L is used for representing a minus monovalence negative ion, n is used for representing a positive integer, MTMP is 2-((5-mercapto-1, 3, 4-thiadiazole-2-imino)methyl)phenol. The double composite material is capable of removing acidic organic dye molecular through high efficiency adsorption, and possesses antibacterial function.

The invention provides stenotrophomonas for efficiently degrading poly(butylene adipate-co-terephthalate) and application thereof. A strain of poly(butylene adipate-co-terephthalate) (PBAT) degradingbacteria capable of secreting lipase is separated and screened out of the soil in Yanxia town, Liquan county, Shanxi province, and the stenotrophomonas is named as Stenotrophomonas sp.strain YCJ1, ispreserved in China Center For Type Culture Collection and has the preservation number of CGMCC 18059. The stenotrophomonas has the advantages that the stenotrophomonas can secret lipase and efficiently degrade PBAT, the stenotrophomonas has a more excellent degrading effect under the slightly alkaline conditions, and the stenotrophomonas and the lipase thereof can be applied as enzymic preparations, biological bactericides and biological enhancers to the environment repairing of PBAT and PBAT-base biodegradable materials in the slightly alkaline environment and have high application value.

The invention discloses an alternating ultrasonic field assisted narrow gap welding method. The alternating ultrasonic field assisted narrow gap welding method comprises the following steps of 1) placing a machined welded workpiece on a welding platform, beveling the welded workpiece, pressing four corners, correspondingly placing an ultrasonic device on each of the two sides above a groove, correspondingly pointing the lower ends of ultrasonic generators to the other opposite side of the groove, and arranging an electrode between the two ultrasonic devices; 2) welding, specifically, enabling the left and right ultrasonic devices to alternately work to promote the electric arc to swing left and right; (3) in a welding process, adjusting power and frequency parameters of the ultrasonic devices, changing arc deflection amplitude, and enabling arc parameters to reasonably match with the ultrasonic parameters; and (4) after completing welding, closing the system, air-cooling to room temperature, wiping cleanly, and completing welding. According to the alternating ultrasonic field assisted narrow gap welding method, it is guaranteed that an ultrasonic field can effectively control arc deflection, the arc is compressed, arc energy is enhanced, and the key problem that the side wall of the narrow gap is difficult to melt is effectively solved.

The invention relates to a high-rubber asphalt master batch and a low-temperature environmental-friendly production process thereof. A raw material is prepared from the following ingredients in percentage by weight: 10 to 50 parts of vulcanized rubber powder, 5 to 15 parts of deconstruction agents and 40 to 80 parts of substrate asphalt. The high-rubber asphalt master batch is prepared by the following steps of firstly performing desulfurization degradation on vulcanized rubber powder; then, adding the substrate asphalt; performing blending to obtain a homogeneous blended material. By using the high-rubber asphalt master batch provided by the invention, the problems of great smell, substandard discharge and the like in the subsequent asphalt product production process can be effectively solved; the problem of asphalt and rubber powder performance reduction due to a conventional production method of obtaining the modified asphalt by degrading vulcanized rubber powder into asphalt at thehigh temperature above 200 DEG C through long-time shearing can be solved; the production period is shortened; the cost is reduced; in addition, the original crosslinking macromolecular reticular structure in the vulcanized rubber powder becomes smaller; a small number of chain type materials can be formed; the system sol content is increased; in the subsequent processing process, the substance exchange between the rubber powder and asphalt is facilitated; the compatibility and the stability are improved.

The invention belongs to the field of photocatalytic degradation of dyes, and particularly relates to a novel rare-earth praseodymium complex with capability of effective photodegradation of an azo dye, and a preparation method and an application of the complex. The preparation method comprises the steps pf introducing pyridine carboxylic acid aglucon with a coordination effect on a rare earth ion into a polymer side group, and then coordinating with Pr<3+> to form the novel rare-earth praseodymium complex with the capability of the photodegradation of the azo dye. A chemical formula of the complex is {[Pr(L<2>)1.5(DMF)(H2O)2](DMF)}n, wherein L<2> is a group of 2,2'-dipyridyl-4,4'-dicarboxylic acid with two protons removed; DMF is N,N-dimethylformamide; and n represents a natural number from 1 to positive infinity. The novel rare-earth praseodymium complex effectively solves the problem of the difficult degradation of the azo dye.

The invention relates to aluminate-niobate glass and a preparation method and application thereof. The aluminate-niobate glass contains, by mol, 5-20% of Nb2O5, 20-65% of Al2O3, 10-60% of La2O3, 10-20% (not including 10%) of BaO, and 0-10% (not including 0) of other oxides. The problem is solved that high-refractivity glass has high melting temperature, proneness to crystal separation, poor stability and the like; the aluminate-niobate glass with high refractivity and low color dispersion can be attained.

The invention relates to a gemini fluorine-containing surfactant as well as a preparation method and application thereof. Perfluoropolyether alcohol (PFPE-OH) reacts with halogenated allyl, and unsaturated double bonds are introduced; then a hydrosilylation reaction with methyl hydrogen dichlorosilane is carried out under the catalysis of platinum; the obtained intermediate product reacts with carbon magnesium polyethylene glycol monomethyl ether to generate perfluoropolyether-polyethylene glycol-methyl monochlorosilane (PFPE-SiCl-PEG); and further hydrolytic condensation is conducted to obtain the gemini fluorine-containing surfactant. The hydrophobic group adopted by the surfactant is perfluoropolyether, so that the problems that long-carbon-chain fluoroalkyl adopted by common perfluorooctane sulfonamide (PFOS), perfluorooctane sulfonic acid (PFOA) and other fluorosurfactants is difficult to degrade and accumulates toxicity are avoided, the hydrophobicity of the surfactant is easy to control by controlling the molecular weight of a perfluoropolyether chain segment, and the surfactant has very high hydrophobic efficiency. The gemini fluorine-containing surfactant provided by the invention is simple and convenient in preparation process, mild in reaction condition and suitable for industrial production, and only conventional equipment is needed in production.

The invention relates to a system and a method for treating rare earth or nonferrous smelting high-salt and high-COD wastewater, and belongs to the technical field of industrial high-salt wastewater treatment. The system comprises a pretreatment oil removal unit, a desalination and deamination unit, a sludge microorganism domestication unit, a biochemical treatment unit and an advanced oxidation treatment unit; an outlet of the pretreatment oil removal unit is connected with an inlet of the desalination and deamination unit; an outlet of the desalination and deamination unit and an outlet of the sludge microorganism domestication unit are connected with an inlet of the biochemical treatment unit; an outlet of the biochemical treatment unit is connected with an inlet of the advanced oxidation treatment unit. Through pretreatment oil removal, calcium salt desalination and deamination, sludge microorganism domestication, biochemical treatment and advanced oxidation treatment, on one hand, the salinity of the wastewater is reduced, ammonium is recycled, on the other hand, sludge microorganisms are domesticated, the salt tolerance of the sludge microorganisms is improved, and therefore the high-salt and high-COD wastewater can be treated through a biochemical method; on the basis of biochemical treatment, an advanced oxidation method is adopted for advanced treatment, and finally, the high-salt and high-COD wastewater can be recycled or discharged after reaching the standard.

The invention discloses a degradable double-slow-release water-retaining fertilizer with strong water absorption and a preparation method thereof. The preparation method comprises the following steps:(1) dissolving salicylic acid and a solvent in a three-neck flask, adding adipoyl chloride and an acid-binding agent into the flask by using a constant-pressure dropping funnel, carrying out a chainextension reaction process at 140-160 DEG C, and carrying out reduced pressure distillation and vacuum drying after the reaction is completed, so as to obtain an intermediate I, (2) mixing the intermediate I with acetic anhydride, adding a catalyst, reacting at 105-110 DEG C, and carrying out cooling, crystallizing, suction filtration and washing with cold water to obtain a crude product, and recrystallizing to obtain an intermediate II, (3) making the intermediate II react with guar gum at 140-160 DEG C, and carrying out melt polycondensation to obtain the product, and (4) preparing the product into a solution, adding a borax solution to form gel, and carrying out freeze-drying and crushing. The degradable double-slow-release water-retaining fertilizer with strong water absorption can beused for double slow release of salicylic acid and boric acid, and can be used as a plant fertilizer for reducing salt damage to various plants.

The invention discloses an environment-friendly paper-based material for a radio frequency tag antenna and a manufacturing method, the paper-based material is prepared by paper adsorbing natural alcohol-soluble or ester-soluble protein, the manufacturing method of the paper-based material comprises the following steps: step 1, preparing a protein solution, and preparing protein and a solvent into the protein solution; step 2, adsorbing paper with the protein solution prepared in the step 1; and step 3, drying the paper adsorbing the protein solution in the step 2 until the solvent is evaporated and the protein is solidified or denatured. Natural protein is used during waterproof modification treatment of the paper, artificial synthetic resin is replaced, the paper is subjected to infiltration, roller coating or spraying, then a solvent is dried and evaporated to solidify the protein, the paper is waterproof after being modified and is easy to degrade in the natural environment, meanwhile, the protein can be decomposed by microorganisms, and the water resistance of the paper is improved. Even if the treated paper is eaten by animals, the paper does not harm the animals.

The invention discloses a manufacturing method of paint for mechanical equipment. The method includes the steps: firstly, stirring raw lacquer and expandable polystyrene foams in an oxidation polymerization machine to obtain first polymers; secondly, adding low-level ester organic matters, dispersing agents, plasticizers, modified epoxide resins and polyurethane emulsion into a stirrer, adding the first polymers acquired in the step 1, and sufficiently and uniformly stirring mixture to obtain second mixture; thirdly, adding linseed oil serving as dilute solvents into the second mixture, and kneading mixture in a vacuum kneading machine to obtain third mixture; fourthly, adding preservative into the third mixture, uniformly mixing and stirring mixture in a mixer by heating at low temperature, cooling the mixture to the normal temperature to obtain finished products. The prepared paint has higher corrosion resistance, water resistance and oxidation resistance and is low in cost and simple in preparation method.