53results about How to "Small particles" patented technology

The invention discloses a preparation method of a metal oxide coated high-nickel ternary positive electrode material, which comprises the following steps of: dissolving a solution containing coated metal in an organic solvent under a stirring condition to obtain a solution containing metal oxide; adding the high-nickel ternary material powder into an organic solvent under ultrasonic operation to obtain a solution of the high-nickel ternary positive electrode material powder; dropwise adding the solution containing the metal oxide into the solution of the high-nickel ternary positive electrode material powder under ultrasonic operation to obtain a mixed solution; heating the mixed solution under a magnetic stirring condition to volatilize the solvent, collecting the material, and drying in a vacuum drying oven; and calcining the dried material in pure oxygen to obtain the metal oxide coated high-nickel ternary positive electrode material. The electrochemical performance of the high-nickel ternary positive electrode material at low temperature can be effectively improved, specifically, the surface of the positive electrode is regulated and controlled, the contact area of the surface of the ternary positive electrode material and electrolyte at low temperature is reduced, so that side reaction is reduced, and meanwhile, the coating layer with certain mechanical strength can be formed in the long-term cycle process at low temperature, so that the electrochemical performance of the high-nickel ternary positive electrode material is improved. Positive electrode breakage is effectively reduced, and the cycling stability of the high-nickel ternary positive electrode at low temperature is effectively improved.

The invention discloses a method for preparing silicon carbide from a silicon waste material and a waste lithium ion battery graphite anode. The method specifically comprises the following steps: (1) respectively carrying out ball milling and mixing on the diamond wire cutting silicon waste material and the crushed and screened waste lithium ion battery graphite anode; (2) high-temperature smelting, ball milling and roasting; and (3) placing in an acid, stirring, leaching, centrifuging, washing, drying and ball-milling to obtain the high-efficiency leaching agent. According to the method, the diamond wire cutting silicon waste and the waste lithium ion battery graphite anode are used as preparation raw materials, silicon carbide is prepared and purified through the processes of ball milling, material mixing, smelting, roasting, acid leaching, centrifuging, drying and the like, and finally high-purity nanoscale silicon carbide particles are obtained. The recycling of the diamond wire cutting silicon waste and the graphite anode of the waste lithium ion battery not only can reduce resource waste and environmental pollution and improve the utilization rate of the waste, but also can generate considerable economic benefits.

The invention relates to the field of glass chemical strengthening, and discloses a molten salt purifying agent and a preparation method and application thereof.The molten salt purifying agent is prepared from, by mass, 35%-65% of SiO2, 5%-40% of Al2O3, 0-5% of MgO, 20%-45% of Na2O and 0.01%-2% of CeO2; wherein the mass ratio of the (MgO + CeO2) to the (SiO2 + Al2O3) is 0.001 to 0.1. According to the molten salt purifying agent provided by the invention, SiO2, Al2O3, MgO, Na2O and CeO2 in a certain proportion are added, the proportion of MgO + CeO2 to SiO2 + Al2O3 is strictly controlled in a specific range, and the effect of each component in purifying molten salt is fully utilized, so that the molten salt purifying agent is high in purification reaction activity and purification efficiency, the phenomena of softening and purification activity failure of the molten salt purifying agent in the molten salt can be avoided, and the service life of the molten salt purifying agent is prolonged. The stability and the service life of the molten salt purifying agent are improved, the proportion of the molten salt is not affected, the situation that alkaline matter is attached to the surface of glass to affect the surface flatness of the glass is avoided, the service life of the molten salt can be prolonged, and the consistency of the glass strengthening performance is improved.

The utility model discloses an anti-particle combination valve, which comprises a valve body, a valve core, a valve core and a valve core, the driving mechanism is connected to the side wall of the valve body; one end of the valve rod is connected with the driving mechanism; the valve element is arranged in the valve body and connected with the other end of the valve rod, when the valve rod is linked by the driving mechanism, the valve element is linked by the valve rod, the valve element moves in the valve body, and the gas channel is opened or closed; the protection piece is connected to the side wall of the valve body and arranged opposite to the driving mechanism, one end of the protection piece makes contact with the gas channel, and the valve element abuts against the protection piece when the gas channel is closed by the valve element; the protection piece is made of stainless steel; the part, making contact with the protection piece, of the valve element is made of stainless steel. Therefore, the technical problem that particles generated by contact friction between the valve element and the valve body pollute a vacuum system is solved.

The invention belongs to the field of chemical product purification, and particularly relates to a preparation device and method of electronic grade triethyl borate. The method specifically comprises the following steps: S1, adding ethanol and boric acid into a reactor for reaction to obtain a product, enabling the product to enter a product collecting tank, then enabling the product to enter a product separating tower from the product collecting tank to separate ethanol in the product to obtain a crude product triethyl borate, and enabling the ethanol to enter an ethanol recycling tank for recycling; and S2, dehydrating the crude product triethyl borate in the step S1, feeding the dehydrated crude product triethyl borate into a crude product collecting tank, feeding the dehydrated crude product triethyl borate into a light component removal tower to remove light components, feeding the dehydrated crude product triethyl borate into a heavy component removal tower to remove heavy components, and feeding electronic-grade triethyl borate into a product tank. Raw materials react to prepare a crude product, the crude product is collected and then introduced into a separation tower, ethanol is dehydrated and recycled at the top, and a triethyl borate crude product at the bottom is also dehydrated. After the crude product is subjected to primary filtration, impurities are removed through a light component removal tower and a heavy component removal tower to obtain a high-purity product, and after the product is subjected to secondary fine filtration, the electronic-grade high-purity standard is achieved, and the high-end application requirement is met.

The utility model relates to equipment for producing activated carbon, in particular to a grinding device for producing the activated carbon, which comprises a rack, a blanking groove, a grinding cylinder, a circular ring cylinder, a first cylinder, a circular truncated cone cylinder, a second cylinder, a one-way conveying pipe, an air suction device and the like, the upper end of the rack is connected with the grinding cylinder, and the upper end of the grinding cylinder is connected with the blanking groove; annular cylinders are installed at the left end and the right end of the grinding cylinder correspondingly, first cylinders are connected to the sides, away from the grinding cylinder, of the two annular cylinders correspondingly, circular truncated cone cylinders are connected to the sides, away from the annular cylinders, of the two first cylinders correspondingly, second cylinders are connected to the sides, away from the first cylinders, of the two circular truncated cone cylinders correspondingly, and one-way conveying pipes are connected to the bottom ends of the second cylinders correspondingly. The grinding turntable and the grinding cylinder of the device are provided with concave-convex surfaces, so that activated carbon can be ground into finer powder, and meanwhile, the air suction devices are arranged on the left side and the right side of the device, so that blockage of the barrier net can be prevented.

The present application relates to the technical field of ceramic tools, and more specifically, it relates to a SiC whisker toughened alumina ceramic tool and a preparation method thereof. A SiC whisker toughened alumina ceramic tool, the SiC whisker toughened alumina ceramic tool is composed of alumina ceramic powder, silicon carbide whiskers and toughening auxiliary powder; the toughening auxiliary powder includes the following raw materials in parts by weight: 20-30 parts of ferro-titanium slag and 6-10 parts of chromium trioxide. The SiC whisker toughened alumina ceramic tool of the present application has a dense structure and has better fracture toughness.

The invention discloses Longshan lily bulbil polysaccharide as well as a preparation method and application thereof, and belongs to the technical field of plant extraction. In the polysaccharide, the total sugar content is greater than 94%, monosaccharide comprises mannose, rhamnose, glucose, galactose and galacturonic acid in a ratio of (5.12 to 5.48): (7.04 to 7.79): (61.55 to 62.38): (17.37 to 18.14): (7.28 to 7.91), and the weight-average molecular weight is 183916 to 184735 Da. The preparation method comprises the following steps: by taking Lilium brownii Bulb as a raw material, carrying out boiling water enzyme deactivation treatment, decolorizing and degreasing, extracting an alcohol insoluble substance with water, synchronously removing starch by using high-temperature-resistant amylase, carrying out microwave digestion on filter residues obtained after filtering by using a sodium hydroxide solution, dialyzing and extracting an extracting solution, and finally preparing the Lilium brownii Bulb polysaccharide with immunocompetence. The method can be applied to food or functional food or medicine, and provides a thought for high-value application of the Longshan lily.

The utility model relates to the related technical field of pharmaceutical equipment, one embodiment of the utility model provides raw material decoction piece homogenization treatment equipment for preparing nerve soothing granules, the raw material decoction piece homogenization treatment equipment comprises a mixing tank and a support, the mixing tank is arranged in the support, an overturning mixing assembly is arranged in the mixing tank and the support, and a feeding and discharging assembly is arranged at the bottom of the mixing tank and the support; the turnover mixing assembly comprises a pair of central shaft brackets, the central shaft brackets are respectively fixed on the two sides in the bracket, the mixing tank is rotatably connected to the pair of central shaft brackets in a sleeving manner, an outer gear is arranged outside the mixing tank, a driving motor is arranged on one side of the bracket, a driving gear is arranged at the output end of the driving motor, and the driving gear is meshed with the outer gear. By means of the technical scheme, the technical problems that in the prior art, due to the fact that traditional equipment is often difficult to rapidly and evenly mix the raw materials, part of the raw materials are not evenly distributed, some light medicinal materials can be gathered at the top of the equipment, and heavy medicinal materials are precipitated at the bottom are solved.

The invention discloses a grinding device for producing and processing interior wall putty powder, and belongs to the technical field of putty powder processing equipment. Mainly comprises a grinding cylinder, a crushing assembly used for crushing inner wall putty powder raw materials is fixedly installed in the grinding cylinder of a crushing area, the crushing assembly comprises an outer cylinder and a conical head, and a water cooling mechanism is arranged in the outer cylinder. The putty powder raw materials can be treated more uniformly and effectively in the crushing process, the materials are promoted to form smaller particles in the crushing process through combination of different movement tracks, so that the crushing efficiency is improved, the working temperature of the outer cylinder is effectively controlled through introduction of the water cooling system, and metal fatigue and deformation caused by overheating are prevented. Due to the improvement, the durability of the equipment is improved, the downtime caused by equipment failure is reduced, the frequency of maintaining and replacing parts is greatly reduced, and the production cost is reduced on the whole.

The present invention proposes a plugging agent for a carbon dioxide gas drive well and a preparation method thereof, and relates to the field of oil production. By weight, the following raw materials are included: 20-30 parts of oil well cement, 10-15 parts of nano calcium carbonate, 1-5 parts of modified silicon dioxide, 1-5 parts of water reducer, 5-10 parts of modified montmorillonite, and 1-5 parts of porous magnesium oxide particles. After the nano calcium carbonate, modified silicon dioxide, water reducer, modified montmorillonite and porous magnesium oxide particles are mixed evenly, the oil well cement is added and mixed evenly. The plugging agent has high strength after curing, good sealing performance with the plugging place, and is not easy to cause secondary leakage.

The application belongs to the technical field of sodium-ion battery cathode materials, and discloses a pyrophosphoric acid sodium iron phosphate composite material and a preparation method and application thereof. By regulating the microenvironment of chelation reaction, the chelation state of iron ions is optimized, iron ion precipitation is avoided, and the formation of electrochemically inert impurities is inhibited. Meanwhile, graphene oxide constructs a three-dimensional conductive network to improve the electronic transmission capacity of the material. The pyrophosphoric acid sodium iron phosphate composite material prepared by the application has small particle size, uniform dispersion, no inert impurities and is tightly coated by the conductive network. The material has a discharge specific capacity of 120.9 mAh·g ‑1 at 0.5 C, still maintains a reversible capacity of 78.1 mAh·g ‑1 at 20 C high rate, and has a capacity retention rate of 84.9% after 1000 cycles, and the full battery assembled with the hard carbon negative electrode also exhibits excellent rate and cycle performance.

The invention relates to the technical field of copper-based catalysts, and discloses a regeneration method of a methanol cracking / reforming hydrogen production copper-based catalyst, which comprises the following steps: crushing and grinding a waste copper-based catalyst into powder; carrying out acid treatment on the powder by using a mixed acid of organic acid and inorganic acid to obtain a mixed solution; adding a precipitant and a pH regulator into the mixed solution, and carrying out active substance conversion; meanwhile, metal salt auxiliary materials and auxiliaries are added, so that the comprehensive performance of the catalyst is improved; after the reaction is finished, carrying out solid-liquid separation to obtain a solid catalyst coarse material; washing with deionized water to obtain a solid catalyst washing material; and calcining to obtain the finished product powder regenerated catalyst. According to the regeneration method of the methanol cracking / reforming hydrogen production copper-based catalyst, the waste copper-based catalyst is used as a raw material, and the high-activity regenerated copper-based catalyst is prepared through regeneration procedures such as acid treatment and precipitation conversion, so that the performance of the catalyst is improved, and the catalyst is recycled.

The utility model relates to the field of concrete recovery, in particular to a waste concrete recovery system which comprises a semi-finished product pool, a mortar pump, a homogenizing tank, a diaphragm pump, a vertical mill and a full-finished product pool, a first discharging port is formed in the lower end of the semi-finished product pool, and a mortar inlet of the mortar pump communicates with the first discharging port; a mortar outlet of the mortar pump is communicated with an inlet of the homogenizing tank, a mortar inlet of the diaphragm pump is communicated with an outlet of the homogenizing tank, a mortar outlet of the diaphragm pump is communicated with an inlet of the vertical mill, a full finished product tank is arranged at the upper end of the full finished product pool, and an outlet of the vertical mill is communicated with the full finished product tank. Mortar subjected to vibration screening falls into the semi-finished product pool, the mortar subjected to vibration screening is prone to uneven mixing, the mortar in the semi-finished product pool is pumped by the mortar pump and conveyed into the homogenizing tank to be evenly mixed, then the mortar enters the vertical mill through the diaphragm pump to be further ground and refined, finally generated finished products fall into the full-finished-product pool, mortar particles are small, and the mortar particles are evenly mixed. And the production quality of the concrete is improved.

The invention discloses a silica powder preparation method, which comprises the following steps: S1, selecting a quartz sand raw material with a silica mass fraction of not less than 99.8%, and carrying out magnetic separation and acid pickling to remove impurities; s2, aging under an alkaline condition, filtering after aging, and dehydrating and drying a filtered substance; s3, adding ethanol and hexamethyldisilazane into the raw materials, atomizing the silane coupling agent hydrolysate by using an atomizer under the atomization pressure of 1.2-1.4 Pa, and mixing the silane coupling agent hydrolysate with the silica powder; s4, carrying out soaking treatment by adopting an organic solvent; and S5, mixing polymethylacrylic acid and ammonium nitrate, performing ultrasonic treatment for 15-30 minutes, performing strong mechanical stirring for 3-5 hours, and performing high-temperature heating treatment. The prepared silica fume has excellent dispersion stability, the silica fume with high hardness is obtained after high-temperature sintering, meanwhile, the silica fume is subjected to carbonization and modification treatment, overall particles are small and high in purity, and the silica fume is good in hardness and high in dispersity.

The application discloses a W and Mo modified Co-based catalyst and a preparation method and application thereof, and belongs to the technical field of hydrogen evolution materials. 1‑x -W x -Mo y -B, wherein x is 0.05-0.5, and y is 0.025-0.2.The W and Mo transition metal doping can effectively improve the surface area of the catalyst, avoid excessive aggregation of the catalyst particles, and make as many catalytic active sites of the catalyst as possible exposed to a reaction solution, so that the obtained quaternary catalyst has high catalytic activity and good cycle stability.

The laser reflow soldering apparatus of the present invention, characterized by a pressurized vacuum chamber, comprises: a vacuum chamber formed of a hexahedral sealed space, with an inlet and an outlet formed on one and the other side of the hexahedron respectively, for selectively opening and closing to introduce or remove a substrate into or from the sealed space; a laser beam irradiation hole formed in the upper part of the sealed space; a support portion disposed above the laser beam irradiation hole of the vacuum chamber, wherein a light-transmitting pressurizing component is inserted and mounted in a replaceable manner, and the support portion maintains an airtight connection with the laser beam irradiation hole of the vacuum chamber without disrupting the vacuum atmosphere inside the vacuum chamber; and a pressurizing portion that, by vertically raising and lowering the support portion on which the light-transmitting pressurizing component is mounted, selectively presses and pressurizes the substrate located inside the vacuum chamber by the light-transmitting pressurizing component.

The invention discloses a method for preparing a low-load ruthenium-based catalyst for a biogas dry-wet dual-process hydrogen-adapted mixed gas. The method uses different soft template agents to assist and optimize the active metal loading, so that the Ru particles are small, highly dispersible, and evenly dispersed, and a low-load, efficient, and stable ruthenium-based catalyst is obtained, which avoids the problem that the catalyst is easy to agglomerate at high temperatures and the catalytic performance is limited; at the same time, by reducing the noble metal loading, the catalyst cost is reduced and the resource utilization rate is improved. The catalyst Ru / MgO-ST prepared by the method has a conversion rate of up to 90% in catalyzing the dry-wet dual-process conversion of biogas to synthesis gas methane, and the hydrogen-carbon ratio (H2 / CO) of the converted gas is about 2, which can well catalyze the dry-wet dual-processing of biogas to hydrogen / alcohol mixed gas, which makes it a promising candidate material for the preparation of green hydrogen / biomethanol, and its process is simple, low cost, and easy to promote industrial production.

The invention discloses an automatic granulation device and method based on polyolefin radiation cracking nucleating agent production, and relates to the technical field of material processing. Comprising a mounting base, the upper end of the mounting base is fixedly connected with a granulation shell used for producing the polyolefin radiation cracking nucleating agent, the front end of the granulation shell is provided with an extrusion mechanism connected through a disassembly assembly, and the granulation shell is provided with a processing mechanism used for producing and granulating the polyolefin radiation cracking nucleating agent. When a driving rod is driven by a motor, a transmission rod is driven to rotate, polyolefin entering a crushing shell is crushed, the particle size of the polyolefin can meet the requirements of subsequent mixing and granulation, the polyolefin is firstly crushed, the subsequent mixing and granulation efficiency is remarkably improved, and the production cost is reduced. And the crushed polyolefin particles are smaller and more uniform and are beneficial to full mixing with the nucleating agent, so that the quality and the stability of the product are improved.

The application discloses a self-adaptive heavy metal solidification and blocking micro-particle, which comprises, from inside to outside, a heavy metal dissolution blocking agent inner core, a triggerable capsule wall and a heavy metal solidification agent shell layer arranged in sequence; wherein the heavy metal dissolution blocking agent inner core material is mainly obtained by compounding silicate and nano-scale active silicon dioxide, the triggerable capsule wall material comprises a pH trigger material and a heat-curing resin; and the heavy metal solidification agent shell layer material is mainly obtained by compounding and intercalating modified kaolin, a calcium-silicon ratio regulator and a sulfate. The application mainly reduces heavy metal dissolution of large-dosage steel slag micro-powder concrete in a service process from two aspects of early solidification and later prevention, and reduces the cracking risk of the large-dosage steel slag micro-powder concrete in a preventive and later compensatory mode; the application can meet the requirements of multiple scene services, and even when the concrete has slight cracks, the application will not increase the risk of heavy metal dissolution, and is suitable for popularization and application.

This utility model relates to the field of white willow bark processing equipment, and discloses a white willow bark raw material crushing and alkalization device, including a mixing box and a processing box. The right side of the mixing box and the left side of the processing box are connected by a conveying mechanism. A crushing mechanism is arranged inside the processing box, and a proportioning mechanism is arranged on the top of the mixing box. The proportioning mechanism includes a proportioning cylinder and a vertical pipe fixedly connected to the proportioning cylinder. The bottom of the vertical pipe is fixedly connected to the inner wall of the mixing box, and a connecting pipe is fixedly connected to the bottom of the vertical pipe. An annular pipe is fixedly connected to the end of the connecting pipe away from the vertical pipe. In this utility model, the proportioning accuracy of the alkali solution is improved by the design of two sets of proportioning cylinders and their scale lines in the proportioning mechanism. The stirring blades in the mixing box, driven by a third drive motor, ensure that the white willow bark raw material and the alkali solution are fully mixed, providing uniform and stable reaction conditions for the subsequent alkalization reaction and improving the extraction efficiency of effective components.

The invention relates to the technical field of crushing, and discloses a waste crusher for magnetic material production and processing, the waste crusher for magnetic material production and processing comprises a platform, a wheel carrier is rotatably mounted on the outer side of the platform, wheels are rotatably mounted on the outer side of the wheel carrier, and a steel pipe bracket is fixedly mounted on the outer side of the platform; a crushing assembly, a circulating assembly, a smashing assembly and a conveying assembly are arranged on the outer side of the platform. According to the waste crusher for magnetic material production and processing, in order to enable the device to perform primary treatment on magnetic material waste, the crushing assembly is arranged, the crushing assembly is firstly matched with a receiving opening to put materials into the device, so that a large motor is started, and a small belt wheel is driven to rotate through a large belt wheel and a transmission belt; therefore, the round blade on the long rod and the hammer head on the outer side of the thin rod rotate at a high speed, the crushing efficiency and uniformity are improved, the size of waste is reduced, and further treatment is facilitated.

The utility model relates to the technical field of fertilizer production, in particular to a crushing device for clear liquid type fertilizer production, which comprises a bearing plate, one end of the upper surface of the bearing plate is fixedly connected with a feeding component, the other end of the upper surface of the bearing plate is fixedly connected with a supporting component, and the middle of the upper surface of the bearing plate is fixedly connected with a collecting component. And a protection assembly is fixedly connected to one end of the supporting assembly, a crushing assembly is fixedly connected to the inner side wall of the protection assembly, and a screening assembly is fixedly connected to the inner side wall of the middle of the protection assembly. Through the arrangement of the bearing plate, the feeding hopper, the conveying belt A and the fixing strip, during use, a worker pours raw materials into one end of the conveying belt A on the upper surface of the feeding hopper, the raw materials are driven to the top end of the protective shell through the fixing strip fixed to the surface of the conveying belt A, and the raw materials fall into the protective shell to be crushed through rolling of the conveying belt A; therefore, the effects that automatic feeding can be achieved, more time and labor are saved, and the labor intensity of workers is relieved are achieved.

The invention belongs to the field of energy materials, and discloses a preparation method of a lithium metal negative electrode of a lithium metal battery and a product and application of the lithium metal negative electrode of the lithium metal battery, and the preparation method comprises the following steps: using a conductive substrate as a working electrode, using an electrode composed of a lithium-containing substance as a counter electrode, and performing electro-deposition on the working electrode in a pure solvent or a low-salt solution to obtain the lithium metal negative electrode of the lithium metal battery. The correspondingly obtained working electrode is the lithium metal negative electrode. By using a pure solvent or a low-salt solution, high-efficiency electrochemical deposition of lithium can be carried out without participation of a traditional electrolyte of high-content lithium salt, correspondingly, the metallic lithium elementary substance (or lithium alloy) deposited on the working electrode is high in density, and the performance of the lithium ion battery is improved. The obtained electrode deposited with the lithium metal can be particularly used as a negative electrode to be applied to a lithium ion battery, and has the advantages of being simple in method, low in cost, controllable, expandable, high in industrial adaptability and convenient for large-scale operation.

The invention relates to the technical field of composite ceramic preparation, in particular to high-strength composite ceramic and a preparation method thereof.The preparation method comprises the following steps that S1, graphene is subjected to acid treatment to prepare a graphene mixed solution; s2, preparing a mixture A containing ceramic powder; s3, preparing a mixture B containing modified montmorillonite; s4, uniformly mixing the mixture A, the mixture B and the graphene mixed solution to obtain slurry; and S5, pressing the slurry obtained in the step S4 into a ligand, and carrying out high-temperature sintering to obtain the composite ceramic. According to the invention, by adding the modified montmorillonite, the sintering aid growing between layers can be uniformly distributed in the whole ceramic powder, the regulation and control performance on ceramic sintering is good, the compactness of the ceramic is promoted, and the strength of the sintered ceramic is improved.

The invention relates to a micro-nano material, in particular to a method for preparing micro-nano particles in traditional Chinese medicine decoction piece decoction, which comprises the following steps: providing the traditional Chinese medicine decoction to obtain supernate, and freezing at-80 DEG C to-20 DEG C for 12-24 hours; and then melting and unfreezing, and collecting the micro-nano particles. The invention newly finds that the freeze-thaw effect has a remarkable effect in the preparation of the traditional Chinese medicine micro-nano particles. The supernate obtained after decoction of the traditional Chinese medicine decoction pieces can generate micro-nano particles in various shapes through freeze thawing, and shape control can be achieved through process parameters. The uniform particles with various shapes can be widely applied to medicine, biological drug loading, tracing and the like, and also have important significance on research on the action mechanism of traditional Chinese medicine.

The utility model discloses a garden green plant waste drying treatment device which comprises a conveying assembly, a smashing assembly, a screening assembly, a material collecting assembly and a shell. The conveying assembly comprises a driving motor, a driving rod installed on a main shaft of the driving motor, a spiral blade installed on the outer side of the driving rod and extending in the length direction of the driving rod, and a sleeve arranged on the outer side of the spiral blade in a sleeving mode. The crushing assembly comprises a fixing ring rotationally arranged on the outer side of the sleeve, crushing blades arranged on the outer side of the fixing ring, a fixing rod arranged at the tail ends of the crushing blades and a connecting rod installed at the tail end of the fixing rod, and the fixing rod is fixedly connected with the driving rod through the connecting rod; the garden green plant waste drying treatment device can further smash waste so as to reduce the transportation space required by the waste.

The present invention discloses a drum slag discharge device for tire oil refining equipment, and relates to the technical field of tire oil refining. The present invention comprises a processing barrel, a processing mechanism and a discharge box, wherein the processing barrel is fixed with the processing mechanism inside, and the discharge box is fixed with the bottom of the processing barrel. The present invention can use multiple wire removal operations when feeding by setting the processing mechanism in the processing barrel, and when removing the wire, the slag can be dispersed and slid down on the hemispherical ramp, which can more thoroughly remove the smaller wires in the slag, thereby improving the recovery quality of carbon black. In addition, the discharge box is provided with a drum-type discharge component. When the drum-type discharge component is used, large particles of carbon black slag can be crushed during the discharge process to obtain carbon black slag with smaller particles, which can be used for further recycling.

The invention provides a cooperative grouting disposal method for a large-diameter shield tunnel in an upper-soft and lower-hard stratum, and relates to the technical field of tunnel grouting processes. The cooperative grouting disposal method for the large-diameter shield tunnel in the upper-soft and lower-hard stratum comprises the construction steps that S1, the geology of the grouting position is investigated; S2, grouting parameters are managed, including slurry preparation, S3, grouting equipment debugging, S4, grouting, S5, grouting working condition analysis, S6, secondary grouting and S7, the grouting effect is judged. According to the prepared superfine cement and water glass double-liquid slurry, the solidification time and the volatilization strength of the grouting liquid can be changed through the additive, so that the grouting liquid is suitable for various complicated geological conditions and engineering requirements of shield tunnels, the gelation time is adjusted according to specific conditions, and the optimal grouting effect is achieved.

A silver-graphene composite coating and a preparation method and application thereof belong to the technical field of electrical materials, and overcome the defects of high contact resistance, poor corrosion resistance, heat dissipation and wear resistance in the prior art. The silver-graphene composite coating of the present invention comprises a first nanosilver layer, a silver-graphene layer and a second nanosilver layer sequentially arranged on a substrate. The thermal conductivity of the silver-graphene composite coating provided by the present invention is ≥330W / m·K; the hardness is ≥80HV; the surface contact resistance is <20μΩ; the dynamic friction coefficient of the coating is ≤0.25; the environmental corrosion resistance of the coating satisfies the anti-sulfur test in 1% Na2S solution within 5h without discoloration, and the anti-sulfur test in 5% Na2S solution is 1h without discoloration.