309 results about "Powder suspension" patented technology

The invention discloses a preparation method and application of hierarchical porous bioactive ceramic. The preparation method comprises the following steps: mixing a binding agent, plasticizer and solvent to obtain an additive emulsion; adding a pore forming agent into the additive emulsion, and mixing to obtain a pore forming agent viscous liquid; adding bioactive powder into the pore forming agent viscous liquid, compounding, and aging to obtain high-plasticity mud pies; and performing extrusion molding on the mud pies, drying, sintering to obtain honeycombed hierarchical porous bioactive ceramic, grouting with a bioactive powder suspension to regulate the size and shape of pores, drying again, and firing to finally obtain the bioactive ceramic having a hierarchical pore size structure and a non-acute pore shape. According to the invention, the preparation method is simple; industrial production can be realized; and the hierarchical porous bioactive ceramic having the advantages of high porosity, favorable mechanical property, satisfactory connectivity and the like can be prepared and is an ideal bone defect repair material.

A metallic wire screen skeleton material-carried nm-clas cystol TiO2 photocatalyst is prepared through preparing transistion layer sol from n-butyl titanate as precursor, preparing active layer sol from n-butyl titanium or TiCl4 and pore-forming agent, coating the transition layer sol on the cleaned metallic wire screen skeleton-shaped carrier, directly coating the active layer sol, drying and calcining; or preparing nm TiO2 powder suspension, and attaching it the said carrier to form the photocatalyst. Its advantages include high adhesion, low gas resistance and high photocatalytic efficiency and activity.

An electroluminescent display or lighting product incorporates a panel comprising a collection of distinct light-emitting elements formed on a substrate. A plurality of distinct local seals are formed below respective individual light-emitting elements or groups of light-emitting elements. Some embodiments combine a metal foil substrate and glass local seals in a flexible bottom-emitting product. The local seal may be used in conjunction with a continuous thin film encapsulation structure. Optical functions can be provided by each local seal, including refraction, filtering, color shifting, and scattering. Each local seal is formed by depositing a low melting temperature glass powder suspension or paste using inkjet technology, and fusing the glass powder using a scanning laser beam having a tailored beam profile. In other embodiments, a lower encapsulation substrate incorporating local window seals is wholly or partially pre-formed.

The invention relates to a preparation technology of a continuous functionalized carbon fiber enhanced thermoplastic resin tape. The technology comprises the following steps: yarn guiding, resin adding, hot press moulding, and reeling; the functionalized carbon fiber is prepared by subjecting carbon fiber to a surface treatment; a functionalized carbon fiber splitting process is added between the yarn guiding process and the resin adding process; or the splitting process is added behind the yarn guiding process, and resin is added during the splitting process; and during the resin adding process, thermoplastic resin powder suspension is sprayed over the splitted functionalized carbon fibers. A splitting process is added before the addition of thermoplastic resin and during the thermoplastic resin addition process suspension containing thermoplastic resin powder is sprayed over the functionalized carbon fibers so as to effectively control the prepreg tape resin content, and finally uniform and low porosity continuous functionalized carbon fiber enhanced thermoplastic prepreg tape is obtained.

The invention relates to a method for preparing compact silver-coated copper powder by using the one-pot method. The silver-coated copper powder is in a coated core-shell structure, a core layer is made of copper, and a shell layer is made of silver. The preparation method includes: adding ammoniacal copper solution prepared by copper sulfate into aqueous solution containing reducing agent and dispersing agent to obtain copper powder suspension; adding water-soluble organic chelating agent into the suspension containing copper powder; adding ammoniacal silver solution prepared by silver nitrate into the suspension containing the copper powder to enable silver ions and the copper powder to be in a displacement reaction; after the displacement reaction finishes, additionally adding a certain amount of weak reducing agent to restore residual silver ions into silver; and filtering, washing and drying to obtain silver-coated copper powder with different grain diameters of 0.8-5 micrometers. The obtained silver-coated copper powder is uniform in silver coating of the shell layer, compact, good in conductivity, high in high-temperature oxidation resistance, and capable of being used for preparation of various electrode slurry sintered in the air.

The invention relates to a method and a system for preparing activated coal gangue, and belongs to the field of the cement industry. A coal gangue material is calcined in a heat source, and then the activated coal gangue is obtained by cooling and discharging the calcined coal gangue material by a multistage cyclone, wherein the heat source is high-temperature flue gas continuously discharged during cement production, then the high-temperature airflow is introduced into a calcination furnace to make the preheated coal gangue material calcined in a powder suspension state. The method makes full use of the stable heat source to quickly preheat and calcine the coal gangue and fully decompose limestone at the same time to achieve the aim of increasing calcium activity, forms the high pozzolanicity coal gangue with stable heat source supply, low cost, high production efficiency of the activated coal gangue and high utilization rate of the heat source, can remarkably improves pozzolanicity of the coal gangue, and provide a novel solving means for comprehensive utilization of industrial waste residue.

The invention provides a cooling liquid for diamond-wire cutting equipment, and a preparation method thereof. The cooling liquid consists of: 2.5 wt%-90 wt% of deionized water, 2 wt%-86 wt% of diethylene glycol, 0.1 wt%-10 wt% of polyethylene glycol with an average molecular weight of 100-2000, 1 wt% -30 wt% of a dispersant, 0.01 wt% -10 wt% of a chelating agent, 0.1 wt% -10 wt% of a metal corrosion inhibitor and 0.01 wt% -5 wt% of an antifoaming agent. The preparation method comprises: successively adding the chelating agent, the metal corrosion inhibitor and the antifoaming agent into deionized water according to the ratio, uniformly stirring; and then adding diethylene glycol, the dispersant and polyethylene glycol, stirring for 6-8 hours to prepare the cooling liquid for the diamond-wire cutting equipment. The cooling liquid for the diamond-wire cutting equipment has the characteristics of good cooling effect, moderate silicon-powder suspension capability, low viscosity, few foams and low corrosivity, and is simple in manufacture and low in cost.

The invention provides a method for preparing straw cellulose nano crystal whisker. The method is characterized by comprising the steps: utilizing crop straws as raw materials, performing pretreatment and cellulose purifying treatment, mechanically grinding into straw cellulose powder; performing DMSO (Dimethylsulfoxide) treatment and TEMPO (Tetramethylpiperidine) oxidation treatment and stirring at high speed, thereby obtaining straw cellulose powder suspension liquid; performing centrifugal treatment, decentralized treatment and freezing and drying, thereby obtaining straw cellulose nano crystal whisker. The preparation process is simple and has high yield and low energy consumption; no toxic and harmful matters are discharged during production and the preparation process has a capability of large-scale promotion and application; utilized straws can be wastes of plant crops such as rice straws, wheat straws and oilseed rape straws; the raw material has wide source and cost is low; pollution to the environment is solved and additional value of straws is improved.

The invention belongs to the field of solid oxide fuel cells and particularly relates to a solid oxide fuel cell composite cathode and a preparation method thereof, wherein the solid oxide fuel cell composite cathode has a high electrochemistry performance and is stable in long-time operation. The preparation method includes the following steps of step one, preparing a three-dimensional porous skeleton made of electrolytic materials at a high temperature; step two, preparing a powder suspension or a nitrate solution of a cathode material; step three, impregnating the powder suspension or the nitrate solution into the porous skeleton and then calcinating the porous skeleton; step four, repeating the operation of the step 3 for a plurality of times until the impregnating quantity reaches the requirement; step five, performing high temperature sintering under an air atmosphere to obtain the three-dimensional composite cathode with a core-shell structure. According to the solid oxide fuel cell composite cathode and the preparation method thereof, the process is simple, expensive experiment apparatuses are not required, the obtained composite cathode is of the core-shell structure, a core is the electrolytic skeleton, a shell is a phase reaction layer with a stable nano thin film structure, and the problem that the performance is attenuated due to the fact that nano particles of the solid oxide fuel cell composite cathode prepared by an impregnating method are low in stability and easy to sinter is solved.

A process for carrying TiO2 photocatalyst on metal surface includes such steps as cleaning metal surface, anodizing in acidic medium, hydrolyzing, leaching and coating tetrabutyl titanate and TiO2 film under the weak alkaline condition by the sol-gel-powder suspension method, and igniting at proper temp. Its advantages are strong photocatalysis action for degradating organic pollutants, and good electric conductivity and machinability.

The invention discloses a porous support material in the tissue engineering of konjac glucan-mannan / hydroxyapatite / chitosan combined bone, and a preparation thereof, pertaining to the technical field of bioengineering materials. Degradable biomaterials with good biocompatibility, such as konjac glucan-mannan, hydroxyapatite and chitosan, are adopted as basic raw materials and respectively prepared into konjac glucan-mannan solution and hydroxyapatite / chitosan composite powder suspension which are then mixed to prepare mixture gel. After aging, alkali elimination, freeze-drying of the mixturegel, the degradable porous support with regenerated and reparative konjac glucan-mannan / hydroxyapatite / chitosan combined bone tissues. Not only does the support material have simple preparation technology and low cost, but also the prepared degradable porous support has good compatibility with trauma parts. Cell tests and animal tests show that the support can be universally used in vivo (bone defect diseased region, etc.) and is multifunctional and antibacterial composite material with adjustable degradation rate in vivo and can promote and induce the repair of the bone defect.

The invention discloses a barium sulfate-based superfine functional powder material subjected to surface modification. The material is prepared by surface modification of barium sulfate powder suspension through a finishing agent, wherein the finishing agent is stearate, silicate, an organic complexing agent or a coupling agent provided with functional groups, and the particle diameter of barium sulfate powder is between 100 namometers and 2 mu m. The preparation method for the material comprises the following steps: barium sulfate, a sulfuric acid solution and a dusting agent perform synthesis reaction, and the barium sulfate powder suspension obtained after reaction is subjected to slaking, separation, washing, slurrying, surface modification and drying to obtain a finished product, wherein the dusting agent is sulfate, phosphate, silica sol, organic complexing agent or sodium polyethylene. The powder material has the advantages of small particle diameter, strong functionality, low cost and so on, and the preparation method has the advantages of small investment, low energy consumption, simple technology, no pollution, superior product performance and so on.

This invention is alumina diolame phosphor powder; it is coated of Al2O3 on phosphor powder surface. Its coating method is that buffer solution is made-up by conjugate acid-base system eith Ph value is between 4.5~6.0, and its concentration is between 0.1M and 2M. Concentration is 0.01~1.0M water soluble aluminium salt solution is made-up by Al2O3 and phosphor powder and equal quality water soluble aluminium salt, the weight ratio of Al2O3 and phosphor powder is (0.25~20):100. Phosphor powder is added into buffer solution to make-up water soluble aluminium salt of 0.0.1~1.0M concentration. It is agitated and ultra sonic dispersed to make phosphor powder disperse in buffer solution. The phosphor powder suspension is heated to 20~600C, and agitated at speed of 100r / m~300r / m, then water soluble aluminium salt is added into suspension, dropwise velocity is 5~500ml / min. The temperature is holding and agitated for 30~120min. Finally, mother liquor is adjusted by alkali solution to pH value is 6~7, then alumina hydrate is got. alumina diolame phosphor powder is got after separation, water washing, dehydration, and is dried at 60~1200C to make water content of phosphor powder is low of 0.25%, and ignited 1~3hours at 200~4000C and air cooling in stove.

The invention relates to the field of building materials, and in particular relates to a concrete material for paving a road surface and a preparation method of the concrete material. The concrete material for paving the road surface comprises the following components, namely a gel material, aggregate and additives; the gel material consists of iron tailings, blast furnace slag, cement clinker and gypsum; the aggregate consists of waste rubber powder treated by NaOH, sand and pebbles; the additives comprise an air entraining agent, an early strength agent and a water reducing agent; and the waste rubber powder is neutral rubber powder which is a rubber powder suspension treated by using NaOH. The concrete material disclosed by the invention has the beneficial effects of achieving reasonable utilization of waste resources, effectively utilizing the iron tailing, waste rubber powder and other resources, solving the problem of treating the iron tailings, improving the performances, such as impact resistance, antifreezing property and anti-cracking property of concrete on the basis of saving the production cost, and prolonging the service life.

A method for preparing silver powder in a continuous mode is characterized by comprising the following steps that (a) a silver solution is prepared, namely silver nitrate, pH adjusting agents, complexing agents and dispersing agents are dissolved in deionized water to form a water solution with the silver ion concentration of 0.3-3.0 mol / L; (b) reducing agents and pH adjusting agents are dissolved in deionized water to form a reducing solution; (c) a and b liquid reaction temperature, the pH value, flow and an injection included angle are adjusted, and meanwhile liquid flows into a pipeline reactor for mixing reaction; and (d) discharging silver powder suspension liquid passes through solid-liquid separating equipment, silver powder is filtered and separated, deionized water is used for washing, 30-60 DEG C drying is carried out, screening is carried out, and ultra-thin silver powder is obtained. Silver powder products prepared with the method are stable in performance, high in dispersity, even in particle size distribution and capable of meeting the application requirements of various electronic pastes.

The invention discloses a silicon-based lithium ion battery negative electrode material and a preparation method thereof. In the material, a silicon core is coated by a silicon dioxide shell, and a certain space exists between the silicon core and the silicon dioxide shell. The preparation method comprises the steps that at room temperature, a surfactant is added into deionized water and stirred; then a silicon powder suspension liquid is added and stirred; the mixed solution is heated to 40-50 DEG C, 3-aminopropyl triethoxy silane and tetraethyl orthosilicate are respectively dripped into the mixed solution and stirred; then the mixture is heated to 70-90 DEG C, and heat insulation is carried out for 15-48 hours; reaction products are collected in a centrifugal manner, are washed with ethyl alcohol and deionized water respectively, and then are dried; the obtained product is added to an acetonitrile and hydrochloric acid mixed solution and stirred for 4-8 hours, is washed again with deionized water and then is dried, thus obtaining the negative electrode material disclosed by the invention. The lithium embedding capacity of the negative electrode material is higher than 2000mAh / g for the first time, and the specific capacity of the negative electrode material can be still kept to be 520-750 mAh / g after 20 times of repeated charging and discharging circulation.

The present invention relates to the preparation process of compound inorganic germicide, and belongs to the field of purifier material preparing technology. The present invention features that the surface of titania grain with photocatalytic activity has loaded porous structure coating layer of calcium hydroxy phosphate and to load germicidal silver ion in the porous structure. The preparation process includes mixing nano titania, ammonium dihydrogen phosphate and calcium nitrate to react inside a micro mixing reactor to obtain compound powder suspension; dropping the water solution of silver nitrate into the suspension for ion exchange to deposit silver ion on the surface of the compound grain; and heat treatment at 400-500 deg.c for 1 hr to obtain the compound inorganic germicide. The compound inorganic germicide has the synergistic effect of photocatalysis and metal ion germicide.

The invention discloses equipment for preparing continuous functionalized carbon fiber enhanced thermoplastic resin base prepreg tape. The equipment comprises a yarn rack, a yarn guiding device, a spraying device, a hot press moulding device, and a reeling roller; and the yarn rack, the yarn guiding device, the spraying device, the hot pressing moulding device, and the reeling roller are sequentially arranged from the front to the rear. A functionalized carbon fiber splitting device is arranged between the yarn guiding device and the spraying device, and the spraying device is used to spray thermoplastic resin powder suspension over the splitted functionalized carbon fibers. A splitting device is added before the spraying device and the spraying device is used to spray suspension containing thermoplastic resin powder over the functionalized carbon fibers to effectively control the prepreg tape resin content so as to prepare uniform and low porosity continuous functionalized carbon fiber enhanced thermoplastic prepreg tape. The equipment has the advantages of simple structure and good production continuity.

The invention provides an etherification and oxidization method for preparing cellulose nano crystal whiskers. The etherification and oxidization method is characterized by comprising the following steps: taking plant fibers with low cellulose content as raw materials; carrying out pre-treatment, etherification treatment and alkali treatment; carrying out mechanical crushing to obtain plant cellulose powder; carrying out TEMPO oxidization treatment, and stirring at a high speed to obtain a plant cellulose powder suspension solution; and carrying out centrifugal treatment, dispersion treatment, freezing and drying to prepare the cellulose nano crystal whiskers. The etherification and oxidization method has a simple preparation process, high yield and low energy consumption; in a production process, no toxic and harmless substances are discharged, and the method has a large-scale popularization and application potential; the used plant fibers can be jutes, straws, cotton stalk peels and the like, and have a wide raw material source and low cost; the environmental pollution problem is solved and the addition value of the plant fibers is also improved.

The invention relates to a toning lotion containing a pearl water extract and a preparation method. The preparation method comprises the following steps of: preparing a pearl powder extract through carrying out high-pressure homogenization, membrane filtration and separation on a pearl powder suspension by combining modern scientific technologies and traditional processes and adopting a purified water boiling method; and mixing and homogenizing the pearl water extract with butanediol, propylene glycol, glycerin, hyaluronic acid, sodium, flavor, and the like to prepare a pearl toning lotion containing the pearl water extract. The invention overcomes the defects brought by acid hydrolysis and enzymatic hydrolysis in the prior art, pearl liquid extracted by using the method provided by the invention contains 18 kinds of amino acids in total, and the active ingredients can be stored in hydrolysates in a stable and homogeneous state. A chemical reagent is scarcely added in the process for preparing the pearl water extract by using the method provided by the invention, trace elements, i.e. natural pearl active ingredients, can be fully extracted without harming skin, and filter residuesobtained after extracting the pearl water extract can be used as natural raw materials for a calcium-supplementing preparation so as to gain multiple advantages by a single substance.

The invention discloses a boron nitride nanosheet-reinforced ceramic-based composite material and a preparation method thereof. A boron nitride nanosheet is taken as a reinforced phase, and ceramic is taken as matrix. The method comprises the steps of firstly loading the boron nitride nanosheet and ceramic powder into a container separately, and obtaining evenly dispersed suspension liquids through high-speed mixing matched with ultrasonic treatment; adjusting the pH values of two suspension liquids to a certain range, dropwise adding the boron nitride nanosheet suspension liquid into the ceramic powder suspension liquid, and carrying out standing, precipitation, suction filtration and drying to obtain mixed powder; then, putting the mixed powder into a graphite jig, carrying out hot-pressed sintering in a multifunctional sintering furnace, carrying out heat preservation for a period of time and stopping heating; and naturally cooling to a room temperature in the furnace to obtain a finished product. The method has good effects that the preparation method is simple, the product performance is good, the cost is relatively low, massive production is easy to achieve, and the obtained boron nitride nanosheet-reinforced ceramic-based composite material has excellent mechanical properties and high-temperature stability.

The invention discloses a preparation method for peanut bioactive peptide. The method comprises the following steps: adding peanut protein powder to distilled water, carrying out stirring, followed by standing and microwave treatment to obtain peanut protein powder suspension liquid; adjusting a pH value of the peanut protein powder suspension liquid through a hydrochloric acid solution, then adding compound plant hydrolase Viscozyme L, followed by carrying out the microwave treatment to secondarily carry out enzymolysis to obtain a enzymatic hydrolysate, then killing the enzymes and carryingout cooling to a room temperature; adjusting a pH value of the enzymatic hydrolysate through a sodium hydroxide solution or the hydrochloric acid solution, then adding protease and carrying out the microwave treatment to secondarily carry out the enzymolysis, then killing the protease and carrying out cooling to the room temperature, followed by carrying out centrifugating and freeze drying to obtain the peanut bioactive peptide. The prepared peanut bioactive peptide product provided by the present invention has functional properties of high dissolubility, high emulsibility, strong foamability, good emulsion stability, good foam stability and the like. In addition, the method provided by the present invention is applicable for the industrial production.

The invention discloses a gelled electrolyte of a lead-acid storage battery and a preparation method thereof. The electrolyte comprises the following components: sulphuric acid, silicon dioxide, sodium sulfate, polyacrylamide, polyacrylate sodium, sodium molybdate, calcium molybdate, magnesium molybdate, sodium tungstate, potassium sulfate and deionized water; the method comprises the following steps of: adding the sodium sulfate into dilute sulphuric acid to obtain a dilute sulphuric acid mixed solution, then adding the dilute sulphuric acid mixed solution into a sodium silicate solution to obtain a silicon dioxide colloidal suspension, next firstly adding the sodium molybdate, the calcium molybdate, the magnesium molybdate and the sodium tungstate into a vapor-phase silicon dioxide nano-powder suspension to obtain a nano vapor-phase silicon dioxide powder suspension, then preparing a polyacrylamide solution and a polyacrylate sodium solution, then firstly uniformly mixing the silicon dioxide colloidal suspension and the nano vapor-phase silicon dioxide powder suspension, and then adding the polyacrylamide solution and the polyacrylate sodium solution into the mixed suspension to prepare the gelled electrolyte of the lead-acid storage battery. The gelled electrolyte of the lead-acid storage battery can be widely used in a storage battery with the capability of more than 20AH.

The invention relates to a preparation method of waterproof fluorescent powder, which comprises the following steps: coating a SiO2 inorganic oxide film on the surface of aluminate long afterglow fluorescent powder the chemical reaction formula of which is that Na2SiO3+2HNO3=H2SiO3+2NaNO3, and carrying out the reaction in an anhydrous system. A coating process comprises the following steps: 1. uniformly dispersing the long afterglow fluorescent powder into glycol to prepare a fluorescent powder suspension with the concentration of 1-10g / 100ml; 2. weighing a relevant amount of NaSiO3* 9H2O according to the proportion by weight of SiO2 to the fluorescent powder as (0.5-15):100, and adding the NaSiO3*9H2O into the fluorescent powder suspension; 3. heating the suspension to reach the temperature of 60-90 DEG C, controlling the temperature at the interval, and stirring; 4. preparing an absolute alcohol solution of HNO3, and dropwise adding the solution in the fluorescent powder suspension to obtain a coating film fluorescent powder suspension; and 5. centrifugalizing the coating film fluorescent powder suspension, then washing with ethanol for 1-3 times, fully drying, then burning at the temperature of 200-400 DEG C for 1-3 hours, and obtaining the coating film long afterglow fluorescent powder after cooling.

The invention provides oily nanometer super-hard powder suspension and a preparation method thereof. The suspension mainly comprises nano diamond powder, nano boron nitride, a suspending agent, a detergent dispersant, mineral oil and synthetic oil. In a preparation process, the nano diamond powder, the nano boron nitride, the suspending agent, the detergent dispersant, the mineral oil and the synthetic oil are mixed well, dispersed uniformly by a stirrer or ultrasonic waves and homogenized by a high-pressure homogenizing machine. Suspension grinding and polishing liquid is kept in a stable and uniform state for a long time and chromatography and failure phenomena are prevented. The suspension can be prepared into lubricating oil for vehicles, industrial lubricating oil and the like and is widely used for lubricating and maintaining mechanical equipment such as internal combustion engines, gears, bearings and the like.

A process for manufacturing milk chocolate products containing a higher than normal water content by preparing a dark chocolate containing up to 30% by weight of water, adding a milk powder suspension optionally together with seed crystals of cocoa butter or cocoa butter equivalent, and mixing under low shear. The invention also relates to high water content milk chocolate products, methods of preparing a chocolate coated ice cream article with such products and to the resulting chocolate coated ice cream articles.

The invention discloses a preparation method and application of a chitosan-shell powder compound adsorbent. The preparation method mainly comprises the following steps: (1) calcining shells without meat at low temperature, and crushing to obtain shell powder; (2) mixing the shell powder with water to prepare suspension liquid; (3) mixing chitosan with dilute acid to prepare a chitosan solution; (4) dropwise adding the chitosan solution into the shell powder suspension liquid while stirring at high speed so as to enable the chitosan to be separated out at the surface of the shell powder; (5) filtering with bolting cloth, and then washing material, obtained by filtering, with water; (6) drying, and grinding to obtain the chitosan-shell powder compound adsorbent. The preparation method provided by the invention is wide in material source, simple in technology and mild in operation conditions; the prepared adsorbent has excellent adsorption performance for Congo red dye, and is low in cost and environment-friendly, thus having good economic and social benefits.

The invention relates to a gas desulfurization and regeneration process by a liquid phase iron oxide powder suspension method, which is characterized in that: iron oxide powder or ferrous oxide powder suspension is adopted to remove hydrogen sulfide from gas; and the method comprises the following steps of: 1) mixing iron oxide powder or ferrous oxide powder with the granularity between 0.01 and 300 micrometers and water to form the suspension for desulfurization, and pumping the suspension into a desulfurization tower for circular spray by using a pump; 2) fully mixing sulfur-containing gas and the suspension for desulfurization in the desulfurization tower, discharging the desulfurized gas from the top of the desulfurization tower, and adding the suspension which has absorbed the sulfur into a regeneration tank; 3) in the regeneration tank, reacting oxygen-containing cyclic gas with the sulfur-containing suspension to generate iron oxide and sulfur element, and floating sulfur foam; and 4) flowing the regenerated iron oxide or ferrous oxide powder suspension out of the regeneration tank, and discharging into an intermediate tank on the bottom of the desulfurization tower for recycling. The process has the advantages that: the process has good desulfurization effect; the desulfurized suspension can be regenerated and recycled; and the equipment occupies a small area and runs safely.

The invention relates to the field of metal composites, in particular to graphene / copper composite and a preparation method and application. The graphene / copper composite comprises, by weight: 1.2-3.5% of graphene, 0.5-1.0% of Sn, 0.05-0.3% of Ni, and the balance of copper; the preparation method of the graphene / copper composite includes the steps of weighing, preparing a powder suspension, preparing composite powder, and forming by cold pressing and sintering by hot pressing. The preparation process of the graphene / copper composite is simple and has a short period, the prepared graphene / copper composite has excellent electrical conductivity and thermal conductivity, and the composite has high tensile strength, good wear resistance and corrosion resistance and is applicable to the preparation of electrochemical sensors.

An electroluminescent display or lighting product incorporates a panel comprising a collection of distinct light-emitting elements formed on a substrate. A plurality of distinct local seals are formed over respective individual light-emitting elements or groups of light-emitting elements. Each local seal is formed by depositing a low melting temperature glass powder suspension or paste using inkjet technology, and fusing the glass powder using a scanning laser beam having a tailored beam profile. The local seal may be used in conjunction with a continuous thin film encapsulation structure. Optical functions can be provided by each local seal, including refraction, filtering, color shifting, and scattering.