13results about How to "Improve the reunion effect" patented technology

The invention provides a preparation method of calcium-modified ferrihydrite and application of the calcium-modified ferrihydrite in improvement of a soil structure, and belongs to the technical field of soil structure improvement. The preparation method of the modified ferrihydrite comprises the following steps: gradually adding a sodium hydroxide solution into a ferric trichloride solution, and stirring and mixing until the pH value of a suspension reaches neutral; aging the suspension at room temperature for 12 hours, centrifuging to remove supernate, and washing the synthesized ferrihydrite with pure water for 2-3 times; then adding a calcium chloride solution for salt washing for 2-3 times so as to fully replace sodium ions on the surface of ferrihydrite into calcium ions; and washing with pure water for 2-3 times to obtain the calcium modified ferrihydrite. The calcium modified ferrihydrite provided by the invention eliminates the influence of dispersive sodium ions or potassium ions in ferrihydrite synthesized by a traditional method, is a nanoscale weak crystalline mineral, has the effect of rapidly improving the stability of soil aggregates, can rapidly aggregate soil particles after being applied to soil, effectively enhances the structural stability of the soil, and improves the soil quality. Therefore, good materials and means can be provided for soil structure improvement.

The invention belongs to the field of pet cleaning supplies, and discloses a modified plant fiber for cat litter, the modified plant fiber takes plant fiber as a raw material, and the modified plant fiber is modified and puffed through a modifier; the modifier is composed of sodium hydroxide, sodium bicarbonate, aluminum potassium sulfate and sodium citrate; the weight ratio of the sodium hydroxide to the sodium bicarbonate to the aluminum potassium sulfate to the sodium citrate is (1-5): (1-5): (1-5): (0.2-0.5). The modified plant fiber is modified by adopting sodium hydroxide, sodium bicarbonate, aluminum potassium sulfate and sodium citrate, so that the deodorization effect of the plant fiber can be effectively improved. Meanwhile, the invention further provides cat litter adopting the modified plant fiber and a preparation method of the cat litter.

The present invention discloses a microbial agent for preventing and treating soil-borne diseases of ginger, and a preparation method and application thereof, and belongs to the field of microbial technology. The microbial agent of the present invention comprises disease-resistant growth-promoting microorganisms, microbial activity promoters and auxiliary carriers, and the dosage ratio of the three is 10mL:100mL:(30-50)g. The microbial agent of the present invention can effectively prevent and treat ginger blight of ginger, and at the same time can increase the resistance of ginger, promote the growth of ginger, and improve the quality of ginger. At the same time, the strain resources of plant growth-promoting bacteria are enriched. The agent is pollution-free and has no toxic side effects, has strong pertinence, can be stored for a long time after being made into a solid agent, is convenient for field application, and can also effectively improve the soil environment, thereby effectively meeting the nutritional needs of crop growth, and has good practical application value.

The present invention proposes an alumina slurry with high solid content and low viscosity and a preparation method thereof, which relates to the field of alumina fiber composite materials, and the preparation steps include: preparing a lanthanum phosphate precursor solution; adding high-purity nano-alumina powder to the lanthanum phosphate precursor solution to obtain an alumina slurry with lanthanum phosphate; mixing the alumina slurry with lanthanum phosphate in a high-speed disperser, and then heating it to obtain a mixed system; after the mixed system is gelled, high-temperature sintering is performed to obtain a solid; deionized water is added to the solid and ball-milled to obtain an alumina slurry with high solid content and low viscosity. The present invention can solve the problem of low impregnation efficiency in the preparation process of alumina-based composite materials.

The application discloses a special dust-settling agent under a tunnel construction environment and a preparation method thereof. The application relates to the field of dust-settling agent preparation under a tunnel construction environment, and solves the problems of high preparation cost, difficulty in large-scale production and limited dust-settling performance of the existing dust-settling agent preparation method. In the application, polyvinyl alcohol, guar gum and itaconic acid are subjected to graft copolymerization reaction under nitrogen protection at 60 DEG C-70 DEG C, N,N'-methylene bisacrylamide crosslinking agent is added to form a chemical crosslinking network, and then the chemical crosslinking network is compounded with a surfactant to obtain the dust-settling agent. The dust-settling agent does not need low-temperature freezing and thawing treatment, can significantly reduce equipment energy consumption and production cost, is convenient for industrialized production, has good film-forming property, moderate viscosity and long water-retention duration, and can efficiently inhibit diffusion of dust generated in tunnel construction.

The invention discloses a method for synergistically weathering gas and phosphate tailings into soil. The method comprises the following steps: firstly, preparing phosphate tailings into granular filler, loading methane-oxidizing bacteria on the granular filler, and constructing a biological filter bed which takes phosphate tailings particles as a biofilm carrier and takes the methane-oxidizing bacteria as dominant microorganisms; gas is introduced into the biological filter bed, the concentration of methane in the gas is 0.1%-30% by volume, methane in the gas is biologically oxidized by methane-oxidizing bacteria, mineral decomposition and reconstruction of phosphate tailing particles are accelerated by methane metabolites, available phosphorus components are released, and weathered products are obtained. According to the method, organic acid produced by biochemical degradation of methane through methane-oxidizing bacteria is utilized, decomposition reconstruction and weathering stabilization of various minerals in the phosphate tailings are accelerated, activation and release of phosphate fertilizer in the phosphate tailings are promoted, organic matter conversion of methane in weathered products is achieved, finally, biological carbon sequestration of methane and the phosphate tailings are rapidly weathered into soil, and the phosphorus tailings are rapidly decomposed into soil. Co-processing and recycling of the gas and the phosphate tailings are realized.

The invention relates to the field of soil improvement agent preparation, in particular to a medium trace element-containing soil improvement agent for flue-cured tobacco planting and a preparation method thereof.The soil improvement agent is prepared by compounding an agent A and an agent B. The agent A and the agent B have a synergistic effect, on one hand, nutrients can be provided for flue-cured tobacco growth, and on the other hand, the soil improvement effect is improved; meanwhile, soil can be improved and maintained, so that the soil plays a role in promoting growth of the flue-cured tobacco to the greatest extent, the yield and quality of the flue-cured tobacco are promoted from multiple angles, in addition, three components prepared at different carbonization temperatures in the agent B can effectively improve the soil structure, improve the soil agglomeration, improve the soil water-retaining property and the carbon sequestration efficiency, and improve the quality of the flue-cured tobacco. Meanwhile, the cavity structure can also be used as a carrier of part of small molecules in the agent A to load and wrap the agent A, so that the prepared soil conditioner can play a role for a long time and a long time.

The present invention discloses a high-efficiency heat storage phase-change composite material and a preparation method thereof. A mechanical ball milling method is used to compound high latent heat lithium-based fluoride salt, nitrate and chloride salt in a specific proportion to achieve the design of low-temperature high latent heat eutectic molten salt. Graphene is functionally modified by a strong oxidant to increase the spacing between graphene sheets and improve the agglomeration effect of graphene in molten salt. In addition, the dispersion uniformity of graphene in the composite material is further improved by strong ultrasonic dispersion, forming a low thermal resistance heat conduction path, thereby improving the heat transfer performance of the composite material. The raw materials of the entire phase change material are widely available and the synthesis method is simple, which improves the problem that the current phase change material cannot take into account both high heat storage and high thermal conductivity, realizes the rapid charging and discharging function of the phase change material, and is conducive to the large-scale promotion of heat storage applications.

The invention belongs to the technical field of functional coatings, and particularly relates to a concrete forward film-coating-free surface treating agent and a preparation method and application thereof.The concrete forward film-coating-free surface treating agent is prepared from, by mass, 300-400 parts of a water-retaining agent, 550-850 parts of water, 2-5 parts of cellulose, 0.2-35 parts of a hydration inhibitor, 0-8 parts of inorganic pigment, 0.1-0.7 part of a defoaming agent and 0.5-2.5 parts of a preservative; the structure of the hydration inhibitor contains an amino group and a phosphate group. The prepared surface treating agent can make the concrete surface strength lose efficacy for a long time, the construction period is prolonged, meanwhile, the construction process steps can be reduced, the effect of long-term failure of the concrete surface strength can be achieved without covering and curing the concrete after spraying, the implementation mode is simple and easy to implement, and the cost is low. The surface of the prepared image concrete is smoother and more attractive, and the effect of controllable texture depth can be achieved by adjusting the ratio of the raw materials.

The invention discloses a moisture-proof water-based nano efficient sealant and a preparation method thereof, and relates to the technical field of sealants. According to the invention, nitrogen-nitrogen triple bonds are introduced to nano-silica by using 2-hydroxy-3-fluorobenzonitrile, and pi electron cloud in the nitrogen-nitrogen triple bonds can absorb ultraviolet energy, so that an anti-ultraviolet effect is achieved; secondly, a KH-570 silane coupling agent, diphenyl silanediol and p-methylphenyl silane are utilized to form silicon acyl heterocyclic molecules rich in Si = O part, and the nano silicon dioxide particles can effectively improve the hydrophobic property of the cured polyurethane sealant, so that the polyurethane sealant has a very good moisture-proof effect; the silicon acyl heterocyclic molecules can generate non-covalent interaction with amino groups in a polyurethane molecular chain, and when a polyurethane side chain is subjected to cross-linking curing, the sealing speed, the sealing effect and the anti-aging capability of the polyurethane sealant can be effectively improved. The moisture-proof water-based nano efficient sealant prepared by the invention has moisture-proof, ultraviolet-proof and anti-aging effects.

The present invention belongs to the field of dust suppressants, and relates to an environmentally friendly antifreeze dust suppressant and a preparation method thereof. The present invention is an environmentally friendly antifreeze dust suppressant for open-pit coal mines, which is prepared from raw materials of 4%-10% dust-fixing agent, 0.1%-1% wetting agent, 4%-10% antifreeze agent, and the remainder being water by mass percentage. The present invention prepares a hydrogel (dust-fixing agent) with a double network structure based on the hydrogen bond interaction between molecules; based on the concept of waste utilization and green development, shells are reacted with acetic acid to prepare an environmentally friendly antifreeze agent; and finally a wetting agent is added to increase the hydrophilicity and wettability of the surface of coal dust particles. The environmentally friendly antifreeze dust suppressant of the present invention is sprayed on coal to form a layer of solidified film with strength, which can effectively bond and consolidate coal dust to prevent coal dust from being raised for the second time, thereby achieving the effect of dust suppression and dust fixing. At the same time, the present invention effectively avoids the freezing of the dust suppressant in a low temperature environment.

The application discloses a kind of smoke purification equipment to the air flow impact, it is related to smoke purification technical field, including purification device ontology;Air inlet assembly is arranged on the lateral wall of purification device ontology, and multiple sets of air inlet assembly are oppositely arranged;Air inlet assembly includes the fixed unit being arranged outside purification device ontology and the mobile unit being slidably arranged on the lateral wall of purification device ontology;The inside of purification device ontology is correspondingly provided with a set of filter assembly on the upper side and the lower side of air inlet assembly;Filter assembly is connected on support frame by first elastic unit, and support frame is arranged in the inside of purification device ontology by second elastic unit;Driving assembly is arranged between mobile unit and support frame, and when support frame is away from mobile unit, support frame drives multiple sets of mobile unit to be close to each other by driving assembly;The application enhances the breaking and agglomeration capacity of particulate matter under high load state of flue gas, to ensure that the equipment always operates in optimum condition.

The invention relates to the technical field of dust removal, in particular to an intelligent high-strength sound wave agglomeration sound source system, which comprises an intelligent control unit, a signal sounding unit, a signal processing unit and a signal processing unit, the signal sounding unit comprises a single chip microcomputer for generating corresponding sound wave signals; the power amplification and matching unit comprises a power amplifier for performing power amplification on the sound wave signal; and the sound source sound production unit is used for generating high-intensity sound waves needing to be agglomerated, and the sound source sound production unit comprises at least one broadband sound wave generator capable of modulating frequency and at least two fixed-frequency sound wave generators located on the two sides of the broadband sound wave generator. The particle size and environmental parameters of particles are monitored in real time through the intelligent control unit, the optimal sound wave frequency is accurately calculated according to a preset algorithm, and the optimal matching of the sound wave frequency and the agglomeration efficiency is ensured, so that the agglomeration effect is improved, the high-strength sound wave technology is adopted, the sound wave agglomeration effect is effectively enhanced, and the particle treatment difficulty is reduced.