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92results about How to "Solve sticky" patented technology

Method for synthesizing DSD (4, 4'-diaminostilbene-2, 2'-disulfonic) acid-triazine fluorescent brightening agents

The invention discloses a method for synthesizing DSD (4, 4'-diaminostilbene-2, 2'-disulfonic) acid-triazine fluorescent brightening agents. A DSD acid-triazine fluorescent brightening agent reaction system is improved to a certain degree by an existing method, and on the basis of comprehensive consideration in various aspects such as the reaction cost, expanded production is carried out but only can be implemented by means of simply expanding reaction equipment. The method is characterized by comprising salifying all organic amine NH<2>R<2> and DSD acid of raw materials for tertiary condensation reaction or parts of the organic amine NH<2>R<2> and DSD acid to obtain DSD acid organic ammonium salt aqueous solution; and sequentially enabling the DSD acid organic ammonium salt aqueous solution to perform primary condensation reaction, secondary condensation reaction and tertiary condensation reaction to obtain the DSD acid-triazine fluorescent brightening agents. The method has the advantages that optional compounds or auxiliaries except for reactants are omitted in reaction procedures; the burden of desalination in an aftertreatment procedure caused by addition of extra salt in an existing method for manufacturing DSD acid-triazine fluorescent brightening agents is relieved, and the problem of foaming due to additional surfactants is solved; the COD (chemical oxygen demand) of waste liquor and the total quantity of the waste liquor are reduced; and problems of increase of cost and pollution due to organic solvents utilized in primary condensation reaction in the existing method are solved.
Owner:ZHEJIANG TRANSFAR WHYYON CHEM +1

Method and special device for performing fusion welding on electrode lead plate of energy-saving environment-friendly type lead-acid battery

InactiveCN102581264AAvoid dripping accidentsReduce oxidation lossManufacturing technologyEngineering
The invention provides a method and a special device for performing fusion welding on an electrode lead plate of an energy-saving environment-friendly type lead-acid battery, relating to the manufacturing technology of lead-acid batteries. The method provided by the invention comprises the following steps: (1) heating and melting solid lead for being infused into a lead storage tank or a lead injection tank to melt the lead, and preheating a melting template; (2) shifting the melting template to tightly cling to the lead storage tank, driving plunger rods to raise through the action of a cylinder on the lead storage tank or the lead injection tank, infusing liquid lead into a rectangular groove of the melting template, and closing taper holes through the plunger rods; (3) shifting the melting template to a station for fusion welding, pushing a tooling box to lead the lower surface of the tooling box to stick on the upper surface of the melting template, and inserting a small rectangular relief block in the liquid lead inside the rectangular groove of the melting template for 2-10seconds; (4) cooling the melting template; and (5) separating a box body of the tooling box from the melting template and then taking out a product. The device provided by the invention consists of a lead melting furnace, the lead storage tank or the lead injection tank; an electric heating induction coil is fixed on the lead melting furnace; the lead storage tank is provided with an electric heating pipe, the taper holes, a cylinder piston rod and a linkage plate; and a liquid inlet pipe arranged on the side wall of the upper part of the lead storage tank is communicated with a liquid outlet pipe of the lead melting furnace. The method and the special device provided by the invention have the advantage that: little liquid lead is used so as to meet the energy-saving requirement during the process of lead injection.
Owner:FUAN GUANGYUAN ELECTROMECHANICAL

System and method for treating and recycling aged resin wastewater in production process of epoxy resin

The invention discloses a system and a method for treating and recycling aged resin wastewater in a production process of epoxy resin. The system comprises an aged resin precipitating and compressingdevice and a solvent extracting device, wherein the precipitating and compressing device comprises a precipitating tank, a centrifuging pump, a screw pump and a plate-and-frame filter press, wherein the inlet of the precipitating tank is connected with the outlet of the centrifuging pump; the inlet of the centrifuging pump is connected with a wastewater container; a flocculant filling pipeline isarranged on a centrifuging pump outlet pipeline and the flocculant filling pipeline is connected with a polyacrylamide solution container; a metering pump is arranged on the flocculant filling pipeline and the metering pump is connected with the precipitating tank; an overflow weir is arranged at the upper part of the precipitating tank; a clear water outflow pipe on the outer side of the overflowweir is connected with the precipitating tank; a discharging opening in the bottom of the precipitating tank is connected with a sludge tank through a discharging pipe; one side of the screw pump isconnected with the sludge tank through a pipeline; the other side of the screw pump is connected with the plate-and-frame filter press. According to the system and the method for treating and recycling the aged resin wastewater in the production process of epoxy resin, the aged resin wastewater is treated in the solvent extracting device by using a solvent extracting process; the problems that theaged resin treated by methylbenzene is viscous and the recycling rate of the epoxy resin is low are solved.
Owner:山东天茂新材料科技股份有限公司

Low-content organic volatile low-melting-point polyester fiber and preparation method thereof

The invention relates to a low-content organic volatile low-melting-point polyester fiber and a preparation method thereof. The preparation method comprises the steps of taking terephthalic acid, phthalic acid, ethylene glycol, diethylene glycol, isophthalic acid sulfonate and 1, 4-butanediol as raw materials to prepare low-content organic volatile low-melting-point polyester, and then taking theprepared polyester as a sheath layer material and taking PET as a core layer material to prepare the low-content organic volatile low-melting-point polyester fiber through sheath-core composite spinning (a metal sand material in an assembly is Ni); and adding zinc oxide in an esterification reaction stage. The fiber has a sheath-core composite structure, and the sheath layer material is the low-content organic volatile low-melting-point polyester (a molecular chain is composed of a phthalic acid chain segment, an ethylene glycol chain segment, a diethylene glycol chain segment, an isophthalicacid sulfonate chain segment and a 1, 4-butanediol chain segment), and the core layer material is PET; and the total content of acetaldehyde and butenal in the fiber is less than 0.5 ppm. The method reduces the influence of organic volatile on fibers and avoids the problem of fiber adhesion.
Owner:扬州富威尔复合材料有限公司

Flotation separation method for high-sulfur copper-zinc ore

The invention relates to a flotation separation method for high-sulfur copper-zinc ore, which comprises the steps of (1) grinding crushed high-sulfur copper-zinc raw ore to obtain ore pulp; (2) under the condition that the pH value of the ore pulp is 7-8, adding inhibitors, namely, sodium sulfite and zinc sulfate, a collecting agent, namely, butyl xanthate and a collecting foaming agent, namely, ester-23 for copper roughing, and respectively obtaining copper rough concentrate ore pulp and roughing tailing ore pulp; (3) enabling the copper rough concentrate pulp to be subjected to three-time concentration operation, and obtaining copper concentrate; (4) conducting copper scavenging operation on the roughing tailing pulp twice, and obtaining copper scavenging tailings; (5) sequentially adding lime, copper sulfate, butyl xanthate serving as a collecting agent and 2 # oil into the copper scavenging tailings for zinc roughing, and respectively obtaining zinc rough concentrate ore pulp and zinc roughing tailing ore pulp; (6) carrying out three times of concentration operation on the zinc rough concentrate pulp to obtain zinc concentrate; and (7) conducting zinc scavenging operation on the zinc roughing tailing pulp twice, and obtaining zinc scavenging tailings. Efficient flotation separation of copper and zinc is achieved, and copper flotation return water and zinc flotation return water are recycled.
Owner:NORTHWEST RES INST OF MINING & METALLURGY INST

Fresh-keeping storage method of fresh walnut with green husk removed

The invention provides a fresh-keeping storage method of fresh walnut with green husk removed. The method includes harvesting when the maturity of walnut green fruits is 90%, removing green husk of green fruits without diseases and insect pests, cleaning and drying until the moisture content of nuts is 25-31%; when the moisture content of kernels is 19-22%, precooling for 24 hours under the conditions of light avoiding, ventilation and temperature of 0 DEG C; sealing in a self-regulating atmosphere bag, and storing under the conditions of light protection, ventilation and temperature of -10 DEG C; when the walnut is taken out of a warehouse for direct consumption, placing the walnut in an open manner for 2-3 hours under the condition of light avoiding and normal temperature; and when the walnut is taken out of the warehouse for transportation, taking the frozen fresh walnut with green husk removed out of the warehouse for cold chain packaging and transportation for consumption. The method solves the problems of mould, sticky and dehydration of seed shells occurring in the fresh-keeping storage process of the fresh walnut with the green husk removed, reduces the loss of walnut water, reduces the microbial pollution on the surface of the fresh walnut with the green husk removed, ensures the flavor and edible property of the fresh walnut, prolongs the storage time, prolongs the supply time of the walnut and overcomes the seasonal defect.
Owner:陇南市经济林研究院核桃研究所

Dolomite-barite type lead zinc ore separation flotation method

ActiveCN112958271AReduce mineral contentSolve stickySolid separationMining engineeringSulfidation
The invention belongs to the technical field of mineral separation, and particularly discloses a dolomite-barite type lead zinc ore separation flotation method. The method comprises the steps: crushing dolomite-barite type lead zinc ore to screen out ore with the particle size being-20 + 2 mm, then feeding oversize fraction minerals after ore washing into a dense medium cyclone to be separated to obtain heavy products and light products; respectively draining the medium from the heavy product and the light product to obtain oversize products which are heavy minerals and light minerals; and carrying out coarse grinding and flotation on the heavy minerals to obtain sulphide ore flotation concentrate and non-sulphide ore, wherein the sulphide ore flotation concentrate is the mineral containing galena, sphalerite and pyrite, and the non-sulphide ore is the mineral containing barite. The method provided by the invention can realize separation of coarse-grained dolomite and sulphide ore, and fundamentally solves the problems that the dolomite is easy to be over-ground and argillized to cause foam stickiness, lead and zinc indexes are influenced and the like; and separation of sulfide ore and barite can be realized under the condition of relatively coarse granularity, so that a basis is provided for subsequent reselection and recovery of the barite.
Owner:INST OF RESOURCES COMPREHENSIVE UTILIZATION GUANGDONG ACAD OF SCI

Environment-friendly production process of reclaimed rubber from tire

InactiveCN108178841ARealize desulfurization treatmentEliminate the grinding processPlastic recyclingMicrowaveFiltration
The invention provides an environment-friendly production process of reclaimed rubber from a tire. The process comprises the following steps: (1) waste rubber is smashed into waste rubber powder; (2)the waste rubber powder and reclaiming auxiliary materials are jointly conveyed to a microwave reclaimer, are subjected to microwave desulfurization and reclaiming treatment in a pipe of the microwavereclaimer and move from a feed port of the pipe to a discharge port under the conveying and mixing actions of a conveying screw in the pipe, wherein the reclaiming auxiliary materials comprise a reclaiming activator, a reclaiming softener and lemon essential oil, the reclaiming activator accounts for 0.2%-1.1% of the mass of the waste rubber powder, the reclaiming softener accounts for 2%-30% ofthe mass of the waste rubber powder, and the lemon essential oil accounts for 2%-3% of the mass of the waste rubber powder; (3) the rubber powder subjected to desulfurization treatment is refined andformed by a refiner, extrusion and filtration are performed, and the reclaimed rubber from the tire is obtained. The novel production process of the reclaimed rubber from the tire is energy-saving andenvironmentally friendly, and the produced reclaimed rubber has the advantages of high strength, stable quality and the like.
Owner:江苏华兴橡胶科技有限公司

UV curing device with gas protection

InactiveCN107685013AFully curedAchieve continuous curingPretreated surfacesCoatingsUV curingOptical power
The invention discloses a UV curing device with gas protection. The UV curing device comprises a semi-closed curing box, a conveying device, a material bearing device and a UV curing light source device. The conveying device comprises a synchronous conveying belt and a sliding block, and the sliding block is mounted on the synchronous conveying belt. The material bearing device is placed on the sliding block. The UV curing light source device is mounted on the upper box wall of the semi-closed curing box. The semi-closed curing box is provided with a vent port. Protective gas enters the semi-closed curing box through the vent port. By forming the vent port in a box body of the semi-closed curing box for injecting the protective gas, oxygen on the surface of a material is isolated during acuring reaction of the material, so that the problem that the surface of the material is viscous and not dry is solved; by arranging the synchronous conveying belt, continuous curing of the material is achieved, meanwhile the conveying speed is adjusted, the illumination time of the different materials is guaranteed, and full curing of the material is ensured; and meanwhile the optical power is adjusted by changing the number of UV light source modules, and accordingly full curing of the material is achieved.
Owner:FOSHAN INST SUN YAT SEN UNIV +1

Anti-freezing saltpetering-resistant red mud baking-free brick and preparation method thereof

The invention relates to an anti-freezing saltpetering-resistant red mud-based baking-free brick and a preparation method thereof. The brick is prepared from the following raw material components: 20to 40 percent of red mud, 10 to 25 percent of power plant coal ash, 5 to 15 percent of electrolytic manganese slag, 20 to 30 percent of metallurgical slag, 5 to 9 percent of 42.5 Portland cement, 20 to 30 percent of graded coal gangue, 3 to 9 percent of excitant, 0.5 to 2 percent of modifier, 0.1 to 0.2 percent of naphthalene water reducer and 3 to 10 percent of composite phase change material microcapsule. The composite phase-change material microcapsule is prepared by taking modified fly ash as a supporting material to adsorb a phase-change material and then coating the phase-change materialwith organic resin. The composite phase change material microcapsules are added, so that the sensitivity of the baking-free brick to the temperature can be effectively reduced, and the expansion andcracking degrees of the baking-free brick in the freezing and thawing process are reduced. Based on the composite synergistic effect theory of various solid waste resources, the volcanic ash activityof solid waste such as power plant coal ash and metallurgical slag is fully excited, a crystalline or amorphous hydration product is formed, the internal pore structure of a matrix can be filled, Na <+> in the matrix is effectively cured, and saltpetering of the baking-free brick is inhibited.
Owner:UNIV OF SCI & TECH BEIJING +1

Direct air-intake sludge drying apparatus and method thereof

The invention provides a direct air-intake sludge drying apparatus. The direct air-intake sludge drying apparatus comprises a casing, wherein, a dividing wall is arranged in the casing, so that the space in the casing is divided into a first drying chamber and a second drying chamber. A feed inlet and an air outlet are arranged on the upper part of the first drying chamber, and a discharge hatch is arranged on the circumferential wall of the first drying chamber. An air inlet and the air outlet are arranged on the circumferential wall or the bottom of the second drying chamber. A sludge stirring apparatus is arranged in the first drying chamber, wherein, the sludge stirring apparatus comprises a rotation shaft and a stirring component fixed on the rotation shaft. A distribution chamber is arranged at the outboard of a side wall of the first drying chamber, the air inlet and the side wall adjacent to the first drying chamber have the through holes, and the side wall of the first drying chamber drying chamber has the through hole. The through hole on the side wall of the first drying chamber is communicated with the side wall of the distribution chamber, and is communicated with the air outlet of the second drying chamber and the air inlet of the distribution chamber. The invention also provides a direct air-intake sludge drying method by using the direct air-intake sludge drying apparatus.
Owner:广州正晟科技有限公司
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