19results about How to "Rapid precipitation" patented technology

This invention relates to a crystallization apparatus for preparing lithium hexafluorophosphate, comprising: a tank body, a feeding device provided on the top surface of the tank body, and an array of heat exchange components provided on the inner wall of the tank body. The heat exchange components include several heat exchange plates disposed on the inner wall of the tank body and arranged along the length of the tank body. This apparatus can increase the heat exchange area and enhance the heat exchange efficiency, enabling the uniform and rapid precipitation of lithium hexafluorophosphate crystals, and achieving continuous production with simultaneous crystallization and scale prevention.

The invention discloses a CaCO3-based validamycin controlled release preparation and a preparation method thereof, and the preparation method comprises the following steps: taking glucose, amino acid and water as raw materials, reacting under a microwave heating condition, and standing to obtain carbon dots; wherein the amino acid is one or a mixture of more of lysine, histidine and arginine; the preparation method comprises the following steps: mixing validamycin, water and calcium acetate, stirring, adding carbon dots, and stirring to obtain a validamycin / carbon dot mixed solution; and adding a sodium carbonate aqueous solution into the validamycin / carbon dot mixed solution, stirring, standing, and drying the obtained precipitate to obtain the CaCO3-based validamycin controlled release preparation. The controlled release preparation has the characteristics of high drug loading rate, controllable drug release, simple preparation process and the like, and provides a new strategy for developing CaCO3-based nano pesticides.

This invention discloses a filtration mechanism and device for industrial pure water preparation, relating to the field of industrial pure water preparation technology. It includes an activated carbon filter with an inlet pipe and an outlet pipe connected to its upper and lower ends, respectively. A drain pipe is also connected to the lower end of the activated carbon filter. Solenoid valves are installed on the inlet, outlet, and drain pipes. A U-shaped sedimentation tank is fixedly connected to the lower end of the drain pipe, forming a sedimentation chamber. This invention improves upon existing activated carbon filters, enabling them to perform activated carbon rinsing, remove activated carbon dust, and collect the dust without wasting water resources. The rinsing operation is simple, and the rinsed activated carbon can be used directly, making it more convenient to use. This invention forms an improved solution that integrates low improvement cost, convenient operation, good rinsing effect, and water conservation.

The invention relates to the technical field of industrial wastewater resourceful treatment, and provides a glass thinning etching waste liquid and waste residue resourceful method which comprises the following steps: treating glass thinning etching waste liquid by adopting a sodium chloride precipitation method to obtain first filter residue and first filtrate; neutralizing the glass thinning etching waste residues with ammonia water to obtain second filter residues and second filtrate; adding the second filter residue into the first filtrate, adding a part of the second filtrate, and stirring for reaction to obtain a third filter residue and a third filtrate; adding sodium fluosilicate seed crystals and sodium chloride into the third filtrate, and reacting to obtain fourth filter residues and fourth filtrate; lime is added into the fourth filtrate to adjust the pH value to be 11 or above, meanwhile, a modified flocculant accounting for 1-5% of the mass of the fourth filtrate is added, and a fifth filter residue and a fifth filtrate are obtained through a reaction; synergistic recycling of the glass thinning etching waste liquid and waste residues can be achieved, and particularly step-by-step recycling of the glass thinning etching waste residues can be achieved.

The application discloses a Ti-V-Zr-Cr-Al system ultrahigh-strength near-beta titanium alloy and a preparation method thereof, and belongs to the technical field of titanium alloy materials. The ultrahigh-strength near-beta titanium alloy contains 5.0-5.5% of Al, 11.0-11.5% of V, 2.5-3.0% of Cr, 4.5-5.0% of Zr, and the balance of Ti and inevitable impurity elements according to mass percentage. In the preparation process, firstly, the alloy ingot is subjected to open forging, and then is subjected to upsetting and drawing forging after being cooled to a phase transition point, so that a certain amount of primary alpha phase is formed in the alloy and is uniformly distributed in beta grains, thereby obtaining a titanium alloy forging blank; and then, the titanium alloy forging blank is sequentially subjected to solid solution treatment and aging treatment, thereby obtaining a near-beta ultrahigh-strength titanium alloy with a duplex structure. The titanium alloy has a tensile strength of more than 1800 MPa, a yield strength of 1780 MPa, a fracture elongation of more than 3.2%, and a uniform elongation of more than 2.8%. In particular, the tensile strength reaches 1800 MPa, and the titanium alloy can meet the requirements of the fields of aerospace, energy industry and the like, and has high use value and popularization value.

The invention relates to the technical field of magnesium phosphate cement materials, and particularly discloses a magnesium potassium phosphate cement-based material with high compactness and high salt corrosion resistance and application of the magnesium potassium phosphate cement-based material. The magnesium potassium phosphate cement-based material is prepared from the following components in parts by weight: 30 to 40 parts of dead burned magnesium oxide, 15 to 20 parts of monopotassium phosphate, 3 to 5 parts of retarder, 0.01 to 0.03 part of crystalline phosphate, 30 to 40 parts of fine aggregate and 8 to 13 parts of mixing water. Wherein the molecular formula of the crystalline phosphate is KNaMg2 (PO4) 2.14 H2O. By introducing the crystalline phosphate in a special structural form, the hydration evolution path and the microstructure of the magnesium potassium phosphate cement-based material in a salt erosion environment are effectively improved, and the salt erosion resistance is remarkably improved.

The invention discloses a glass ceramic for dental restoration, which comprises the following components in percentage by mass: 55-70% of SiO2, 10-30% of Li2O, 3-12% of K2O, 0-3% of Al2O3, 0.1-4% of Na2O, 0.1-3% of B2O3, more than or equal to 6% of nucleating agent, 0.1-5% of CeO2 and 0.1-3% of other pigments, and the sum of the mass fractions of the raw materials is 100%. The glass ceramic is prepared by adopting a melt pouring method, and is directly annealed after being poured without crystallization heat treatment; the restoration body is prepared in a hot die casting mode, no casting channel hole is formed in the contact point of the casting channel and the restoration body, and therefore the requirements for attractiveness, energy consumption reduction and cost reduction can be met.

This application relates to a low-alpha-ray silica and its preparation method. The method involves adding a high-purity sodium sulfate solution to water glass, followed by the sequential addition of dilute sulfuric acid solutions of varying concentrations for aging. The resulting precipitate is then calcined to obtain low-alpha-ray silica with Th ≤ 5 ppb and U ≤ 5 ppb. The sodium sulfate solution optimizes the precipitation process in two ways: first, it increases the ionic strength of the solution, compresses the colloidal double layer, and disrupts the metastable state of the system, thus promoting the aggregation and crystallization of the target precipitate; second, sulfate ions preferentially complex or inhibit the precipitation tendency of impurity cations based on the common ion effect; furthermore, the dilute sulfuric acid solution promotes the reaction and rapid precipitation of silicate ions with hydrogen ions, causing the Th and U ions encapsulated in the precipitate to precipitate out, thereby reducing the impurity content in the solution. This low-alpha-ray silica, due to its extremely low Th and U content and good thermal conductivity, can be widely used in high-performance and special-purpose chip packaging fields.

The application relates to the technical field of lithium ion battery positive electrode materials, in particular to a nickel-rich positive electrode material and a preparation method and application thereof. The preparation method is as follows: in a vacuum and high-temperature environment, a mixed solvent composed of acid, an organic solvent and an aqueous solution has a low boiling point, can be quickly self-evaporated, metal cation M1, metal cation M2, lithium ions, nickel ions and anions in the mixed solution are quickly precipitated, an atomically mixed uniform metal salt, nickel salt and lithium salt mixture is obtained, then high-performance nickel-rich positive electrode material with high crystallinity, small lithium-nickel mixing degree and accurate stoichiometric ratio is obtained through solid-phase sintering; the preparation method is simple, atomically mixed material can be realized, no element is lost in the whole synthesis process, the atomic utilization rate is high, the stoichiometric ratio is accurately controlled, and the method is suitable for wide application.

The utility model discloses a water conservancy and hydropower construction drainage device convenient to impurity separation, specifically related to water conservancy engineering technical field, including drainage device shell, the drainage device shell bottom end is established with the sliding groove, the sliding groove is inlayed with the sand trap, and the sand trap includes the pool body, the pool body inner surface is connected with the labyrinth guide vane, the pool body bottom is installed with the sealing groove through the inlaying, the sealing groove is connected with the sealing strip in, the sealing strip bottom is connected with the collection box, one side of sand trap is connected with no.

The utility model discloses a kind of filtering and precipitating mechanism for atomization coating spray head backflow area in the field of atomization coating, including lower jar body, upper jar body and connecting jar body, the utility model is filtered by being set up filter jar, filter jar is divided into upper jar body, lower jar body and connecting jar body, lower jar body outer wall is symmetrically provided with feed inlet and discharge port, lower jar body inside middle position is provided with baffle, bottom is symmetrically provided with two blowdown ports with baffle as center, when slurry flows into filter jar, speed will gradually reduce, particle in slurry will be settled to filter jar bottom under the action of gravity, the particle of greater density, more easily under the influence of gravity fast precipitate to filter bottom, realize the separation of slurry and particulate matter, so that the bad rate generated in atomization process has somewhat dropped, finished product rate greatly improves.

The application discloses a small-grinding sesame oil production precipitation device and relates to the technical field of small-grinding sesame oil production.The application comprises a base, a driving plate is arranged on the base in a sliding mode, first, second and third gear racks are symmetrically arranged on the driving plate in sequence, a driving rod is arranged on the base in a rotating mode, a gear with missing teeth is arranged on the driving rod and engaged with the first and second gear racks, a bearing frame is hingedly arranged on the base, a driving gear engaged with the third gear rack is arranged on the hinging shaft of the bearing frame, and a placing groove for placing a container is arranged on the bearing frame.The application discloses a small-grinding sesame oil production precipitation device, which discards the traditional standing precipitation mode, and the container can be regularly reciprocated during use, so that the ground and stirred sesame is in a motion state, and the fixed objects can be precipitated faster, thereby improving the precipitation efficiency and guaranteeing the production efficiency of the small-grinding sesame oil, and the application is more practical.

This application provides a synergistic purification agent system and treatment method for acidic washing water from bio-oxidation of gold ore, belonging to the field of biometallurgical wastewater treatment. The agent system consists of tannic acid and 5-tert-butyl-2-[3-(2,2-dichloroethoxy)-2H-imidazolyl]-pyridine. This application utilizes the spatial framework effect of tannic acid to capture fine particles, while simultaneously leveraging the reaction of 5-tert-butyl-2-[3-(2,2-dichloroethoxy)-2H-imidazolyl]-pyridine with arsenate or arsenite ions. Through an electrostatic self-assembly mechanism, simultaneous deep purification of fine suspended solids and free arsenic in the acidic washing water is achieved. This method is simple to operate, has high solid-liquid separation efficiency, effectively solves the industry problem of precipitate clogging pipelines and equipment, and provides an efficient and feasible technical path for the recycling of washing water in bio-oxidation gold extraction processes.

The utility model discloses a cyclohexane oxidation tail gas separation pretreatment device relates to chemical industry waste gas treatment technical field, including cooling water tank still includes: circulating mechanism, the circulating mechanism sets up in cooling water tank, the circulating mechanism includes the cooling cylinder of setting in cooling water tank, the circulating mechanism is used for when the salt class is separated, the salt class of gaseous is cooled down, the cooling water of the utility model absorbs heat can flow into cooling water tank, when the cooling water passes through the fin, heat will be transferred from the cooling water to the fin, and the fin will transfer heat from the air outside, so that the cooling water in the cooling cylinder and cooling water tank will continuously circulate the cooling of cyclohexane oxidation tail gas in the conical hollow cylinder, ensure that the gaseous salt class in cyclohexane oxidation tail gas separates as solid to the inner wall of conical hollow cylinder, when the airflow rotates in the conical hollow cylinder, and the solid salt separated from the bottom of conical hollow cylinder is discharged, so as to realize the separation of salt class.

This invention provides an integrated wastewater treatment device for enhancing flocculation, including a flocculation unit. The flocculation unit includes a drive shaft and an impeller assembly. The top end of the drive shaft is connected to a drive component, and the bottom end is mounted on the bottom of the flocculation tank via a bearing. The impeller assembly includes an outer impeller assembly, which is mounted on the drive shaft via a fixing ring. The outer impeller assembly includes a first outer blade group, a second outer blade group, and a third outer blade group, which are uniformly mounted on the fixing ring circumferentially along the drive shaft. The vertical cross-sections of the first, second, and third outer blades are all curved surfaces composed of two sine curves. Each of the first, second, and third outer blades has a cavity. Each of the first, second, and third outer blades has a second discharge port. The integrated wastewater treatment device provided by this invention effectively improves the flocculation effect of the entire space, creating conditions for efficient sedimentation.

This utility model discloses a device for rapidly draining blood from cured meat, comprising: a storage tank; a draining bucket movably disposed within the inner cavity of the storage tank, a fixed shaft fixed at the center of the draining bucket, and a squeezing component disposed within the draining bucket to apply pressure to the cured meat and facilitate the seepage of blood; a rotation acceleration component disposed at the top of the storage tank to rotate the draining bucket and facilitate the ejection of blood through centrifugal force. This utility model involves placing the draining bucket inside the storage tank, then laying the cut meat pieces inside the draining bucket, and subsequently applying pressure to the meat pieces layer by layer using the squeezing component to rapidly extract the blood from the meat pieces. Simultaneously, the draining bucket is rotated and accelerated, causing the meat pieces to rotate at the same time, allowing the blood to be ejected from the draining bucket under centrifugal force, thus rapidly draining the blood from the meat pieces. This not only drains the blood from the meat pieces but also accelerates the drying process.

The application discloses a composite post-processing method of an aluminum alloy solid-phase frictional additive component, which is suitable for heat-treatable strengthening aluminum alloys 2 series, 6 series and 7 series prepared by a solid-phase frictional additive method, and comprises preliminary cryogenic treatment, preliminary stress relief treatment, solid solution treatment, secondary cryogenic treatment, deep cryogenic deformation treatment, secondary stress relief treatment and aging treatment. The composite post-processing method can significantly reduce residual stress of the additive component, improve dislocation density of the component and refine grains by firstly performing cryogenic treatment before solid solution treatment and respectively performing cryogenic treatment and deep cryogenic deformation treatment before aging treatment, and is particularly suitable for short-process integrated rapid preparation of large-size complex aluminum alloy components.

The application discloses a Qimen tea pot type fixation machine, which comprises a supporting frame, a shell base, an air inlet gap communicated with the inside of the shell base, a fixation cylinder, a heating layer provided in the wall of the fixation cylinder, a heat exchange fan fixedly connected to one end of the fixation cylinder, and an air outlet of the heat exchange fan opposite to the feeding and discharging port, wherein the fixation cylinder is coaxially arranged in the shell base, and air inlets are provided in the wall of the fixation cylinder and communicated with the inside of the fixation cylinder; and the air outlet of the air blowing device is connected with the air inlet gap. The fixation cylinder is continuously rotated, the air inlets, the air inlet gap and the air outlet of the air blowing device are intermittently communicated, the moisture accumulated in the tea leaf stack is effectively dispersed and diffused outward, the axial air supply of the heat exchange fan can rapidly force the rising water vapor to be discharged from the feeding and discharging port of the fixation cylinder, and the moisture in the tea leaves is rapidly replaced.

The utility model relates to the technical field of sewage treatment, and discloses an intelligent automatic detecting and dosing device which comprises a detecting assembly, a control assembly, a dosing assembly, a pre-dissolving assembly and a spraying assembly, the control assembly is in signal connection with the detection assembly and the dosing assembly; the pre-dissolving assembly comprises a mounting seat, a pump body, an auxiliary material box and a stirring part, the pump body and the spraying assembly are mounted on the mounting seat, and the spraying assembly comprises a spraying box and a swinging part. The pre-dissolving assembly is arranged, so that a flocculating agent can be pre-dissolved firstly, and the problem that the dissolving effect is poor due to the fact that the flocculating agent floats on the water surface after being directly thrown into a sewage treatment tank is solved; by arranging the spraying assembly, the spraying box which swings in a reciprocating mode can cover the treatment pond with the flocculating agent solution as much as possible, the distribution uniformity of the flocculating agent solution in the treatment pond is improved, impurities in the treatment pond can be rapidly precipitated, and the operation efficiency is greatly improved.