280results about How to "Increase dosage" patented technology

The invention provides a water quality treatment device control method, system and equipment and a storage medium, and the method comprises the following steps: carrying out data acquisition on a water quality treatment device based on a water quality treatment duration required by a flocculation process to obtain multiple groups of target water inlet data and multiple flocculant addition amounts from a first moment to a second moment, the duration from the first moment to the second moment is the water quality treatment duration; on the basis of the multiple sets of target water inlet data and the multiple flocculating agent adding amounts, the turbidity prediction model is used for conducting effluent turbidity prediction, and the predicted effluent turbidity is obtained; and based on the predicted effluent turbidity and the actual effluent turbidity of the water quality treatment device at the second moment, controlling the water quality treatment device to carry out feedback regulation on the adding amount of the flocculating agent. According to the embodiment of the invention, the accuracy and the stability of predicting the effluent turbidity are improved, the control accuracy of the adding amount of the flocculating agent is improved, the actual effluent turbidity can be maintained near the required effluent turbidity, and the effluent quality stability is improved.

The invention relates to a preparation method of a low-cost high-dosage phosphogypsum-based aggregate, and belongs to the technical field of artificial aggregate building materials. The invention aims to solve the problems of low mixing amount, high cost and low strength of the existing ardealite-based aggregate. The preparation method comprises the following steps: mixing ardealite powder, waste residue powder, namely S95 granulated blast-furnace slag powder and red mud, and inorganic cementing materials, namely PO42.5 cement and sulphoaluminate cement in proportion, granulating by a granulator, and curing to prepare ardealite-based aggregate with the particle size of 4.75-19 mm; the method is low in cost and large in phosphogypsum mixing amount, the prepared aggregate is high in strength, when the aggregate is used in concrete, consumption of natural aggregate and the concrete preparation cost are remarkably reduced, the environmental problem caused by accumulation of a large amount of phosphogypsum is effectively solved, and the method has important significance on environmental protection and economic development; the process flow is simple, industrial production is easy, a new thought is provided for high-value utilization of ardealite resources, and the method has a profound influence on promotion of circular economy and sustainable development.

The invention discloses a high-impermeability curing agent for sandy soil and a preparation method, the high-impermeability curing agent comprises the following components by mass: 30-50 parts of a solid waste-based sulfur aluminum iron series cementing material; 10 to 30 parts of slag powder; 5-30 parts of ordinary Portland cement; 5-20 parts of desulfurized gypsum; and 1-10 parts of silica fume. A curing agent system further strengthens the hydration effect and the cementing performance of the cementing material, and a formed crystal-colloid composite hydration product system contributes to the stable and compact microstructure of the cured sandy soil, so that the impermeability and the mechanical property of the sandy soil can be greatly improved; the comprehensive application of solid waste raw materials such as desulfurized gypsum and mineral powder is realized, and the stacking cost of solid wastes and the influence on the environment are reduced.

The invention relates to the technical field of wind power, and discloses a lattice type fan tower which comprises a top tower section, a switching section and a lattice section, the top end of the switching section is fixed to the top tower section, and the top end of the lattice section is fixed to the switching section; the lattice section comprises a plurality of corner columns and a plurality of reinforcing pieces, all the corner columns define a corner column frame, and the top ends of all the corner columns are fixed to the switching section; the reinforcing pieces are connected to the two adjacent corner columns in the side edge direction of the corner column frame. Any corner column is provided with a corner column inflection point, and the corner column is bent towards the outer side of the corner column frame at the corner column inflection point. The height of the corner column inflection point is configured to be lower than or equal to the lowest height of the blade tip of the fan blade, it is guaranteed that the blade does not collide with the tower in the operation process, the taper of the lattice section below the corner column inflection point can be flexibly adjusted, the structural efficiency is higher, and the material consumption is smaller. And the frequency of the tower can be flexibly adjusted by adjusting the conicity of the lattice sections, so that the resonance interval of the fan is avoided, and the safety of the tower is guaranteed.

The invention discloses a composition for relieving stress and fear of pets and application of the composition, and belongs to the technical field of animal nutritional health-care products, the composition for relieving stress and fear of pets comprises the following raw materials in percentage by weight: 0.1-20% of a relieving component, 1-20% of amino acid, 0.1-10% of an antioxidant and 55-90% of a functionalizing agent, and the sum of the weight percentages of all the raw materials is 100%; the invention further discloses a specific composition and proportion of the relieving component, and the composition for relieving stress and fear of the pets can be used for daily health care to prevent stress of the pets and can also be used before possible stress, such as transportation or before seeing a doctor.

The invention discloses low-cost double-network fluorinated silicone rubber and a preparation method thereof, and relates to the technical field of fluorinated silicone rubber. The double-network fluorosilicone rubber comprises the following raw materials: vinyl silicone resin, vinyl fluorosilicone resin, hydrogen-containing fluorosilicone oil, a solubilizing monomer, a multifunctional acrylate monomer, a reinforcing filler, a structured control agent, a free radical thermal initiator, a platinum catalyst and an inhibitor. The double-network fluorosilicone rubber is formed by constructing a carbon-carbon chain network and a siloxane network, the tensile strength, toluene swelling resistance and ATF oil resistance at the high temperature of 150 DEG C of the fluorosilicone rubber are obviously improved, the preparation cost of the fluorosilicone rubber is reduced, and a favorable support is provided for widening the application field of the fluorosilicone rubber.

The invention belongs to the technical field of punching equipment, and particularly relates to a special variable-diameter down-the-hole drill bit for large strip mine deep blast hole punching, which comprises a drill bit neck, a drill bit body is fixedly connected to the drill bit neck, first drill teeth are fixedly mounted on the drill bit body, square grooves are formed in the drill bit body in an array manner, and adjusting assemblies are arranged in the square grooves. A square block is arranged in the square groove in a penetrating mode, one end of the square block is fixedly connected with a reaming head, and a frame is arranged in the square block. According to the special variable-diameter down-the-hole drill bit for drilling the deep blast holes in the large strip mine, through the arranged square block and the reaming head, the blast holes with different diameters can be conveniently excavated for use, so that when the explosive consumption is increased and the blasting effect is ensured, the micro motor works to enable the square block to move, and through cooperation of the reaming head after the square block is moved, the drilling efficiency is improved; when the drill bit body rotates, the reaming head can be driven to do circular motion, the area of a digging and penetrating site of the drill bit body is enlarged through the reaming head, and the purpose of enlarging and adjusting the diameter of a dug blast hole is achieved.

The invention discloses an efficient composite injection molten iron desulfurization method, which mainly solves the technical problem of high molten iron desulfurization cost in the existing magnesium-based composite injection molten iron desulfurization process. According to the technical scheme, the efficient composite injection molten iron desulfurization method comprises the following steps: 1) collecting parameters of inverted molten iron; (2) front injection is carried out, the injection powder is lime powder, a top spray gun is inserted into the molten iron in the ladle, the lime powder is injected, and front injection parameters are determined before the lime powder is injected; (3) composite injection is conducted, injection powder is lime powder and magnesium powder, after front injection is finished, the lime powder and the magnesium powder are injected into the molten iron in the ladle at the same time, and composite injection parameters are determined before the lime powder and the magnesium powder are injected; 4) carrying out post-injection, wherein the injection powder is lime powder; and (5) after the post-blowing is finished, the spray gun is lifted. According to the method, high-efficiency and low-cost desulfurization of the molten iron is realized by adopting a lime powder desulfurization mode in a front injection stage.

The invention provides a composite mineral admixture based on iron ore tailing mud and a preparation method thereof, and the composite mineral admixture comprises the following raw materials by weight: 30-40 parts of activated iron ore tailing mud, 5-10 parts of layered ultrafine powder, 5-10 parts of a methacrylic acid-cellulose copolymer, 5-7 parts of limestone powder, 1-3 parts of a composite grinding aid, and 1-3 parts of a composite activator. According to the composite mineral admixture disclosed by the invention, the mixing amount of the composite mineral admixture in cement can be increased to the maximum extent, the use amount of cement clinker is reduced, the production cost of the cement is reduced, the composite cement has more excellent mechanical properties, volume stability and durability, and the composite mineral admixture plays a role similar to a crystal nucleus effect in a cement hydration process; and meanwhile, the hydration products tend to be uniformly distributed in the whole interface transition area, the hydration products with better stability are generated, and the anti-permeability performance is improved.

A method for promoting methane production by anaerobic digestion of sludge using β-cyclodextrin, which belongs to the technical field of anaerobic digestion. The purpose of the present invention is to solve the problems of low hydrolysis efficiency of refractory organic matter and low yield of energy-type product methane in the process of anaerobic digestion of excess sludge. The present invention provides a method for promoting methane production by anaerobic digestion of sludge using β-cyclodextrin, and uses β-cyclodextrin to enhance the production of biological methane in the process of anaerobic digestion of excess sludge. The efficiency of β-cyclodextrin in promoting the conversion of organic matter in sludge into methane gradually increases as the dosage of β-cyclodextrin increases from 50 mg / g to 300 mg / g. When the dosage of β-cyclodextrin is 300 mg / g, the cumulative methane production of the experimental group increases by more than 60% compared with that of the control group. The present invention can obtain a method for promoting methane production by anaerobic digestion of sludge using β-cyclodextrin.

The invention belongs to the technical field of underwater construction materials, and particularly relates to a self-leveling anti-dispersion underwater bottom sealing material and a preparation method thereof. The self-leveling anti-dispersion underwater bottom sealing material disclosed by the invention is prepared from the following components in parts by weight: 530 to 730 parts of sulphoaluminate cement, 77 to 277 parts of ordinary Portland cement, 84 to 126 parts of fly ash, 870 to 950 parts of fine aggregate, 250 to 278 parts of water, 18 to 23 parts of a water reducing agent, 6 to 10 parts of a flocculating agent, 8 to 12 parts of a retarder, 0.9 to 1.4 parts of a de-foaming agent and 0.1 to 0.4 part of an early strength agent. The self-leveling dispersion-resistant underwater bottom sealing material disclosed by the invention has good fluidity and dispersion resistance.

The invention relates to low-cost retarded concrete and a preparation method thereof. The low-cost retarded concrete comprises the following components in parts by weight: 24-27 parts of cement, 6-8 parts of blast furnace slag powder, 5-8 parts of fly ash, 70-90 parts of fine aggregate, 2-7 parts of sludge incineration ash, 93-100 parts of coarse aggregate, 0.4-0.6 part of a water reducing agent, 0-0.25 part of a retarder and 12-21 parts of water. When the temperature of the production environment is lower than 30 DEG C, the retarder comprises sodium gluconate; when the temperature of the production environment is higher than or equal to 30 DEG C, the retarder further comprises white sugar. According to the invention, the sludge incineration ash is recycled, phosphate radicals dissolved in the sludge incineration ash are combined with calcium ions generated by cement hydration, and the calcium ions coat the surfaces of cement particles to hinder further hydration of cement, so that the purpose of retarding is achieved, and the cement can be retarded by increasing the mixing amount of the sludge incineration ash and the retarder. The retarded concrete meeting different setting time requirements can be prepared; other components in the sludge incineration ash can be subjected to secondary hydration reaction with calcium hydroxide generated by cement hydration, so that the durability of the concrete can be improved.

The invention discloses an aviation titanium forge piece coating and a treatment process thereof, and belongs to the technical field of space flight and aviation, the aviation titanium forge piece coating comprises an inner coating and an outer coating, the inner coating comprises the following raw materials in percentage by mass: 45%-50% of TiO2, 6%-11% of B4C, 28%-34% of B2O3 and 6%-10% of MgO, and the sum of the mass percentages of the raw materials is 100%; the outer coating is prepared from the following raw materials in percentage by mass: 0.7%-2.0% of B2O3, 26%-36% of Al2O3, 30%-32% of SiO2, 23.3%-30% of KOH and 10%-15% of TiB2, and the sum of the mass percentages of the raw materials is 100%. By changing the composition and dosage proportion of the outer coating and the inner coating, the oxidation resistance and flame retardant effect of the titanium alloy are remarkably improved.

A growth layer I and a germination layer I are laid on the closed beach face of the tailing pond, a plurality of vegetation bags are embedded in the closed beach face of the tailing pond at intervals, each vegetation bag is of an inner-layer and outer-layer bag-shaped structure with the top open, and a growth cavity with the top open is formed in the inner face layer of each vegetation bag. The outer surface layer of the vegetation bag surrounds the inner surface layer, the bottom edge of the outer surface layer is fixedly connected with the bottom edge of the inner surface layer, a moisturizing and heat insulation cavity is formed between the outer surface layer and the inner surface layer of the vegetation bag, the growth cavity is filled with a growth layer II and a germination layer II from bottom to top, and the moisturizing and heat insulation cavity is filled with moisturizing cotton. The beach face is covered with the growth layer I and the germination layer I, the vegetation bags are buried on the beach face at intervals, the vegetation coverage rate is guaranteed, meanwhile, the vegetation bags can avoid loss of base materials, and the defects that an existing vegetation bag is single in function and poor in moisture preservation and heat insulation performance are overcome through the composite structure and filler configuration of the vegetation bags. The device has the advantages of being simple in structure, good in moisture preservation and heat insulation performance, high in vegetation coverage rate after restoration and long in service life.

The invention belongs to the technical field of modified polyvinyl alcohol (PVA) sizing agents used for textile warp sizing, and discloses a preparation method of anionic PVA textile sizing agents, which comprises the following steps: firstly treating PVA raw materials with a sodium hydroxide solution to generate sodium polyvinyl alcohol; then, sodium polyvinyl alcohol reacts with an etherifying agent halogenated acetic acid to generate carboxymethyl etherified PVA; according to the method disclosed by the invention, non-ionic PVA can be modified into anionic carboxymethyl PVA, and the anionic carboxymethyl PVA can be efficiently adsorbed by a common cationic adsorbent, so that recycling of PVA slurry in the desizing waste liquid is realized, damage of the desizing waste liquid to a water environment can be greatly reduced, and the method has relatively great application potential.

The utility model discloses a motor and electrical equipment, and relates to the technical field of electrical equipment, the motor comprises a stator and a rotor, the stator comprises a stator iron core, the stator iron core comprises a stator yoke part and a plurality of stator tooth parts, and the plurality of stator tooth parts are arranged at intervals along the circumferential direction of the stator yoke part; the rotor comprises a magnetizer and a plurality of permanent magnets, the magnetizer is wound on the periphery of the stator, and the permanent magnets are arranged at intervals in the circumferential direction of the magnetizer; the maximum outer diameter of the rotor is D1, the maximum outer diameter of the stator is D2, the maximum radial thickness of the permanent magnet is H1, the maximum radial thickness of the magnetizer is H2, and the maximum width of the tooth part of the stator is W; the following conditions are satisfied: 71 mm < = D1 < = 75 mm, 0.77 < = D2 / D1 < = 0.82, 0.3 < = H2 / H1 < = 0.5, and 0.23 < = W / (D1-D2) < = 0.27. According to the utility model, by optimizing the size of each part of the motor, the utilization rate of a magnetic circuit is improved, and the efficiency of the motor is improved.

The invention discloses a composite antibody immunomagnetic bead and a preparation method and application thereof, and the preparation method comprises the following steps: (1) cleaning a magnetic bead, and activating the magnetic bead with an activator; (2) adding a composite anti-erythrocyte antibody into the activated product obtained in the step (1) for antibody coupling; the composite anti-erythrocyte antibody at least comprises two anti-erythrocyte antibodies with different epitopes; (3) adding a magnetic bead sealing agent into the antibody coupling product obtained in the step (2) for sealing, and performing strong magnetic separation after the reaction is finished; and (4) adding a product obtained after strong magnetic separation in the step (3) into a freeze-drying buffer solution, uniformly dispersing, sub-packaging, adding a free red blood cell antibody, and performing vacuum freeze-drying to obtain the composite antibody immunomagnetic beads. The composite antibody immunomagnetic bead provided by the invention has excellent erythrocyte separation efficiency.

The invention provides a treatment method of sulfuric acid process titanium dioxide acidic waste, the sulfuric acid process titanium dioxide acidic waste comprises acidic wastewater and titanium concentrate acidolysis slurry, and the method comprises the step of separately treating the acidic wastewater and the titanium concentrate acidolysis slurry. According to the method, the acid wastewater and the titanium concentrate acidolysis slurry are subjected to neutralization, sedimentation and squeezing treatment separately, so that the neutralization rate, the sedimentation rate and the sedimentation effect are improved, the consumption of a neutralizer is reduced, meanwhile, the product quality of titanium gypsum neutralized by the acid wastewater is improved (the content of sulfur trioxide is greater than or equal to 30%), and in addition, the yield of titanium is also increased.

The invention discloses a method for preparing neodymium iron boron magnetic powder by a chemical method, which comprises the following steps of: 1, mixing iron salt, an organic ligand and a solvent for coordination reaction to obtain an iron-based metal organic framework material; 2, dipping the iron-based metal organic framework material in the rare earth-fused salt mixed solution, and drying to obtain a dipping precursor; step 3, carrying out calcination and reduction reaction on the impregnated precursor to obtain a rare earth-iron precursor; and 4, mixing the rare earth-iron precursor with a reducing agent, and carrying out a reduction diffusion reaction. According to the method, an iron-based metal organic framework material is used as an iron source and a template, a dipping process is combined, a highly uniform and dispersed dipping precursor is obtained, the refined spherical neodymium iron boron magnetic powder is obtained through calcination, hydrogen reduction and a reduction diffusion reaction, and the magnetic powder is controllable in component and high in magnetic conductivity. The method is suitable for preparing the neodymium-iron-boron magnet with excellent magnetic performance and adjusting the composition and grain boundary distribution of the neodymium-iron-boron magnet.

The invention provides an integrated busbar, a battery pack and electric equipment. The integrated busbar comprises a bracket assembly, a busbar and an acquisition wire harness, the support assembly is used for being installed on a battery cell and comprises a bottom frame and a cover plate, the bottom frame is provided with an installation groove and a glue containing groove which are arranged in a separated mode, a wire passing hole is communicated between the installation groove and the glue containing groove, the glue containing groove is used for containing heat-conducting glue, and the cover plate is installed on the bottom frame. The busbar is mounted in the glue accommodating groove so as to be in heat-conducting contact with the heat-conducting glue, and the busbar is used for being electrically connected with the battery cell. The acquisition wire harness is mounted in the mounting groove, and the acquisition wire harness partially penetrates through the wire passing hole and is electrically connected with the battery cell. Wherein the cover plate also covers a part of the wire passing hole. According to the integrated busbar provided by the invention, the technical problem that the amount of heat-conducting glue overflowing from the wire passing hole to the glue accommodating groove is large can be solved.

The invention discloses a method for stabilizing recycled aggregate by using lime and fly ash in a municipal road base. The method comprises the following steps: determining the grain composition of recycled coarse aggregate and recycled fine aggregate and the mix proportion of lime, fly ash and synthesized recycled graded aggregate; designing a plurality of road structure layers according to the grade requirement and the traffic volume requirement of the municipal road; and performing paving, rolling and maintenance construction procedures according to the designed paving layer structure of the lime-fly ash stable recycled aggregate. The method comprises the following steps: firstly, determining the grain composition of the recycled aggregate, then providing a paving structure layer of a general municipal road, and finally providing a general process and method for paving the lime-fly ash stabilized recycled aggregate, and compared with the existing application method of the inorganic binder stabilized recycled aggregate, the method provided by the invention has the advantages that the technical performance of the material is ensured; the mixing amount of the construction waste recycled aggregate is greatly increased, 100% replacement of natural aggregate is realized, the utilization rate of the construction waste is greatly increased, a novel paving application method is provided for municipal roads, and the feasibility of practical application is greatly improved.

The invention provides an epoxy modified cement-based material, the epoxy modified cement-based material comprises an organic phase structure and inorganic crystals, and the inorganic crystals are radially distributed on the surface of the organic phase structure; the organic phase structure is a spherical or sphere-like structure with the diameter of 3-15 microns; the inorganic crystal is of a needle-shaped, rod-shaped or sheet-shaped structure with the length being 0.3-3 microns and the diameter being 0.05-0.5 microns. The epoxy modified cement-based material disclosed by the invention shows good adhesion and dispersion resistance under water or in a humid environment, can realize rapid underwater construction, and keeps stable performance for a long time under harsh conditions such as a marine environment and a humid environment; the engineering requirements of multiple fields such as building structure repairing, underwater repairing, rapid first-aid repair, ocean protection and road and bridge engineering are met, and the integration of high strength, high toughness, strong interface bonding and long-acting durability is realized.

The invention relates to a printing paste, a pigment printing paste and application thereof. The invention discloses a water-based ink, which is prepared from the following components in percentage by mass: 10 to 30 percent of adhesive, 5.2 to 12 percent of hand feeling finishing agent, 0.5 to 3 percent of penetrating agent, 1 to 3 percent of pH regulator, 2 to 6 percent of metal salt, 2 to 5 percent of composite thickening agent, 0.3 to 0.5 percent of defoaming agent and 40 to 78 percent of water, and the composite thickening agent comprises alkali swelling thickening agent and inverse emulsion thickening agent. The printing paste provided by the invention has excellent shear thinning capability and water holding property, so that the pigment printing paste with the printing paste can have both back permeation effect and pattern definition during pigment printing.

The application relates to the field of vacuum aluminum-plated paper processing and specifically discloses a dry-wet compounding process for vacuum aluminum-plated paper. The dry-wet compounding process for vacuum aluminum-plated paper comprises the following preparation steps: S1, coating a bottom adhesive on a film, and heat setting one side of the bottom adhesive close to the film; S2, compounding the heat-set bottom adhesive with base paper, curing the bottom adhesive, and forming a bottom coating layer on the surface of the base paper; S3, vacuum aluminum plating on the side of the bottom coating layer away from the base paper to form a vacuum aluminum-plated layer; and S4, coating a surface adhesive on the side of the vacuum aluminum-plated layer away from the bottom coating layer, curing to form a surface coating layer, and obtaining vacuum aluminum-plated composite paper. The dry-wet compounding process can improve the amount of the bottom adhesive without causing overflow of the bottom adhesive, improve the folding resistance of the obtained vacuum aluminum-plated paper, and solve the color explosion problem.

The invention discloses a material efficient plasticizing extrusion foaming system, comprising a plasticizing station and a mixing station, and is characterized in that the plasticizing station is arranged as a high-speed rotating material plasticizing machine with a pressureless rotating collision structure, and an outlet of the high-speed rotating material plasticizing machine is provided with a parallel twin-screw mixing cooling device for low-temperature cooling of the mixed material. The beneficial effects of the invention are as follows: the high-speed rotating material plasticizing machine with a pressureless rotating collision structure is creatively designed to make secondary feeding possible; no flame retardant is added during the plasticizing process, the material is cooled in the parallel twin-screws, the flame retardant does not pass through high temperature and is not decomposed, the flame retardant effect is good, and raw materials are saved.

The embodiment of the invention discloses a nickel-based superalloy for brush sealing and a preparation method and application thereof. The nickel-based high-temperature alloy is prepared from the following components in percentage by weight: 0.03 to 0.10 percent of C, 0.01 to 0.08 percent of Mn, 19.00 to 21.00 percent of Cr, 3.20 to 3.70 percent of Al, 2.00 to 4.00 percent of Fe, 1.00 to 3.60 percent of Mo, 0.01 to 0.50 percent of Co, 0.001 to 0.05 percent of La and the balance of nickel and inevitable impurities. When the alloy is stretched at the room temperature, the tensile strength reaches 1200 MPa or above, the yield strength is within the required range, the average oxidation rate is reduced to 0.0006 g / m < 2 >. H or below, and the alloy has good oxidation resistance, does not crack during forging machining, has good hot working performance and meets the design and use requirements of advanced aero-engines and gas turbines.

This invention relates to the field of road engineering technology, and more particularly to a multi-objective performance coupling design method for warm-mix synchronously recycled SBS modified asphalt. The method determines the aging degree of aged SBS modified asphalt through testing, and accordingly determines the optimal dosage of the two-component synchronous recycling agent and the warm-mix agent. Subsequently, a diffusion model and a fusion degree calculation model for new and old SBS modified asphalt are established to quantitatively analyze the fusion degree of new and old asphalt under different temperatures and aged asphalt dosages. Based on this, a fusion degree spectrum is constructed, and by defining thresholds for each performance index, a feasible design scheme range for balanced performance is obtained, thereby determining the optimal mixing temperature and the maximum dosage of aged SBS modified asphalt. This invention can quickly determine the maximum allowable dosage of aged SBS modified asphalt and its corresponding optimal mixing temperature while considering multiple performance objectives, providing a reliable theoretical basis for the durability design of high-performance recycled SBS modified asphalt pavements.

The invention provides an iron ore tailing mud-based cement admixture and a preparation method thereof. The material comprises the following raw materials in parts by weight: 50-60 parts of tailing mud, 12-16 parts of composite calcium powder, 8-13 parts of water glass, 18-25 parts of a polyvinyl alcohol solution, 10-14 parts of polydimethylsiloxane, 20-27 parts of calcium sulfate whiskers and 12-16 parts of a silane coupling agent. The preparation method comprises the following steps: drying and crushing the iron ore tailing mud, adding the composite calcium powder and the water glass, uniformly mixing and calcining, adding the polyvinyl alcohol solution for primary ultrasonic dispersion, adding the polydimethylsiloxane, the calcium sulfate whisker and the silane coupling agent for secondary ultrasonic dispersion, drying and grinding to obtain the iron ore tailing mud-based cement admixture. According to the method, the iron ore tailing mud waste obtained after beneficiation serves as the raw material and is pretreated to be used for preparing the cement-based mixed material, the comprehensive utilization rate of the waste can be increased, resources are saved, the doping amount of the iron ore tailings pretreated through the method can be increased, meanwhile, the influence of the iron ore tailings on cement performance can be reduced, and the cement-based mixed material is obtained. The cement has good compressive strength and breaking strength.

The invention belongs to the technical field of manganese slag resource utilization, and particularly relates to a composite exciting agent, manganese slag fluid soil and a preparation method and application of the manganese slag fluid soil. The composite activator comprises mineral powder, lime, cement and a surface modifier. The surface modifier comprises higher phosphate and higher fatty acid salt. The mineral powder, the cement, the lime and the surfactant serve as the composite exciting agent, when the manganese slag is treated, the activity of the manganese slag can be activated, the manganese slag fluid soil with good compressive strength is formed, the manganese slag has the high mixing amount and accounts for 85-95.5% of the total mass of the mixed powder, the purpose of large-scale resource utilization of the manganese slag can be achieved, the environmental pressure is relieved, and the economic benefit is increased. And the method has good economical efficiency. Meanwhile, the surface modifier adopts a specific high-grade phosphate and high-grade fatty acid salt compounding mode, so that the friction force in a composite system can be effectively reduced, the flowability of the composite system is improved, the problem of limited material contact is solved, and the compressive strength is improved.

The utility model discloses an energy-saving light-weight thermal-insulation high-precision autoclaved aerated concrete block which comprises a concrete block body, a positioning convex block is arranged on the lower end face of the concrete block body in the length direction, and a positioning groove is formed in the position, corresponding to the positioning convex block, of the upper end face of the concrete block body in the length direction. The utility model relates to the technical field of building masonry materials, and compared with the prior art, through the matching effect of the positioning convex blocks and the positioning grooves, the quick positioning between the upper and lower layers of concrete block bodies can be effectively ensured in the masonry process, and meanwhile, the overall structural strength of a masonry wall can be effectively improved; compared with the design of lightening holes, the through grooves are formed in the concrete soil building block body, so that the weight reduction effect is more obvious, meanwhile, in the production and machining process, the design of a mold is more convenient, the forming effect is good, and the demolding efficiency is high.