120 results about "Boehmite" patented technology

The invention discloses a method for preparing gamma aluminum oxide nanosheets based on precise regulation and control of complex precipitation, which comprises the following steps: introducing an organic complexing agent into a water phase system, constructing an organic-inorganic mixed solvent environment, and inducing an aluminum precursor to generate two-dimensional oriented growth under an alkaline condition to obtain a flaky boehmite precursor; then carrying out high-temperature calcination to prepare gamma aluminum oxide nanosheets; the preparation method is simple in process, mild in condition and easy for large-scale preparation, and the prepared gamma aluminum oxide nanosheet can still keep stable sheet-shaped morphology and gamma phase structure after being re-sintered for five times at 1000 DEG C, has a hierarchical pore structure and a specific surface area of more than 40 m < 2 > / g, and shows excellent high-temperature structural stability; the material can be widely applied to the fields of high-temperature catalyst carriers, adsorption separation materials, advanced ceramics and the like, and has a good application prospect.

The invention discloses polishing powder for an automobile paint surface and a preparation method of the polishing powder. The preparation method comprises the following steps: preparing a mixed solution; preparing a roasting material from the mixed solution and pseudo-boehmite, wherein the specific surface area of the roasting material is 30-60m < 2 > / g; grinding the roasted material to obtain aluminum oxide slurry; adding a coupling agent and a dispersing agent into the aluminum oxide slurry, and reacting under a stirring condition to prepare mixed slurry; and carrying out post-treatment on the mixed slurry to obtain the polishing powder of which the particle size distribution D50 is in a range of 0.6-0.9 mu m and the particle size distribution D100 is less than 10 mu m. According to the preparation method of the polishing powder, the prepared polishing powder has good polishing performance, the surface smoothness of a polished automobile paint surface is improved, the polishing powder is easy to store and transport, and the production cost can be effectively reduced.

The invention provides an iron-pollution-resistant catalytic cracking catalyst and a preparation method thereof, and the iron-pollution-resistant catalytic cracking catalyst comprises the following raw materials: a mesoporous and macroporous material, a zinc-aluminum composite material and a molecular sieve, wherein the mesopore and macropore material comprises kaolin and first zinc salt loaded in pores of the kaolin; the zinc-aluminum composite material is obtained by performing solid-phase ball milling on pseudo-boehmite and second zinc salt. The catalytic cracking catalyst provided by the invention has abundant mesopore and macropore structures and excellent iron resistance.

The invention discloses a high-conductivity and high-adhesion lithium ion battery diaphragm and a preparation method and application thereof.The high-conductivity and high-adhesion lithium ion battery diaphragm comprises a base membrane and a coating on the base membrane, the coating comprises polyvinylidene fluoride-hexafluoropropylene copolymer, ceramic powder, functional filler, polyvinylpyrrolidone and solid electrolyte, the functional filler is a metal organic framework material, and the ceramic powder is at least one of aluminum oxide and boehmite. The slurry is prepared through a step-by-step method, it is guaranteed that the functional filler and the ceramic powder are evenly dispersed, the functional filler can construct a high-speed lithium ion transmission channel, the ceramic powder can synchronously improve the mechanical effect and the thermal stability of the coating, and finally collaborative optimization of the ionic conductivity, the mechanical strength and the thermal stability of the diaphragm is achieved; and the optimal performance balance is realized under the raw material ratio, so that the lithium ion battery diaphragm with excellent comprehensive performance is obtained.

The invention relates to a method for recycling copper tailings in a segmented and quality-divided manner, which comprises the following steps: S1, roasting the copper tailings to obtain roasted slag; s2, adding alkali into the roasting slag, dissolving, and filtering to obtain alkali-dissolved filter slag and alkali-dissolved filtrate; s3, adding an acid into the alkali dissolution filtrate for precipitation, and filtering to obtain an acid precipitation precipitate and an acid precipitation filtrate; s4, carrying out refining and hydrothermal reaction on the acid precipitation precipitate to obtain boehmite; and adding potassium salt into the acid precipitation filtrate, and performing evaporative crystallization to obtain potassium sulfate. According to the method, the copper tailings are treated through cooperation of roasting and alkali dissolution, sulphoaluminate can be decomposed, dissolution of sulfur and aluminum elements can be promoted, potassium sulfate and boehmite which are high in additional value are recycled in a segmented and quality-divided mode, and the comprehensive utilization rate of the copper tailings is remarkably increased. In addition, the problem that the building material expands and cracks due to sulfate can be avoided through recovery of the sulfur element in the copper tailings.

To provide boehmite in which a polymer dispersant is adhered or bonded to a particle surface and which does not exhibit dilatancy and is excellent in dispersibility. To provide a method for producing boehmite by adding a dispersant to a slurry of aluminum hydroxide and water and subjecting the slurry to hydrothermal treatment, by which boehmite not exhibiting dilatancy and excellent in dispersibility can efficiently be produced.SOLUTION: The present invention relates to boehmite in which a polymer dispersing agent is attached or bonded to surfaces of particles of the boehmite, the boehmite having a carbon content of 0.01% by weight to 0.17% by weight, an isoelectric point of pH2. 9 to 6.7, and exhibiting no dilatancy. The present invention relates to a method for producing the boehmite, including subjecting a slurry containing aluminum hydroxide, a polymer dispersant in an amount of 0.03% by weight to less than 1% by weight based on the weight of the aluminum hydroxide, and water to a hydrothermal treatment.SELECTED DRAWING: Figure 1

This invention discloses a method for preparing pseudoboehmite with high specific surface area and high conversion rate by sand milling and hydrolysis, belonging to the field of materials chemistry. The method involves using high-purity aluminum isopropoxide purified by vacuum distillation as a dispersant, and sand milling and stirring under specific pH, temperature, and vacuum conditions to complete the hydrolysis and aging process. Microwave drying is then employed to obtain a sample with a specific surface area >350 cm². 2 Boehmite powder with an alumina conversion rate of ≥76% per g can be used for the production of laser crystal-grade alumina and gem-grade alumina, and is also suitable for use as a catalyst support; moreover, the preparation method is simple to operate, easy to control, and easy to industrialize.

This invention belongs to the field of boehmite powder preparation technology, and discloses a high specific surface area boehmite powder and its preparation method. The method includes: firstly, deeply cooling a macroscopic system containing aluminum salts to build a macroscopic cold energy reserve; then, at the instant of pulsed injection of an alkaline precipitant into the solution, utilizing the micro-area adiabatic space built by pausing external cooling, allowing the heat generated by the neutralization reaction to perform in-situ annealing of the newly formed crystal nuclei; finally, using the macroscopic cold energy reserve to quench and lock the annealed crystal nuclei. This invention, by synergistically coupling external cooling and reaction heat in space and time, transforms the traditional process of step-by-step low-temperature nucleation and high-temperature aging, where performance is at odds, into a physical process that is synergistically completed within a single cycle, thereby solving the problem of simultaneously achieving the two core performance indicators of high specific surface area and high thermal stability.

A method for producing a sheet phase pseudo-boehmite. The method includes: a) putting an organic acid into an aqueous solution in which an aluminum precursor is dispersed; and b) putting a product from the process of a) into a Taylor reactor, wherein a pressure of the Taylor reactor is 1 to 100 bar.

This invention discloses an alumina support and its preparation method. The alumina support includes an alumina matrix and first sheet-like alumina particles grown in situ on the outer surface of the matrix. The alumina matrix includes granular alumina particles and second sheet-like alumina particles. The size of the first sheet-like alumina particles is 100~600nm, and the sheet-like particles on the surface are stacked to form pores of 40-300nm. The preparation method is as follows: (1) Mix γ-phase alumina powder with propylene oxide aqueous solution and perform hydrothermal treatment to obtain sheet-like boehmite HP1; (2) Mix the sheet-like boehmite HP1 and boehmite P2 from step (1) to form an alumina support precursor; (3) Place the alumina support precursor in propylene oxide solution for a second hydrothermal treatment, and the treated material is used to obtain the alumina support. This alumina support has a rich macroporous content and can be used in macromolecular catalytic reactions, especially suitable for the hydrotreating process of heavy residue oil.

The invention discloses an alumina carrier with a special morphology and a preparation method thereof. The preparation method comprises the following steps: (1) preparing an ammonium bicarbonate solution and / or an ammonium carbonate solution as a hydrothermal medium; (2) uniformly mixing pseudo-boehmite with a hydrothermal medium, and sealing; (3) putting the sealed material into an ultrasonic reactor for ultrasonic pretreatment; (4) carrying out hydrothermal treatment on the pretreated material, and filtering and drying the material subjected to hydrothermal treatment to obtain fibrous ammonium aluminum carbonate powder; (5) uniformly mixing the fibrous ammonium aluminum carbonate powder and a forming aid, and then adding a solution prepared from a peptizing agent and water for mixing and kneading; and (6) extruding, drying and roasting the material to obtain the fibrous alumina carrier. According to the preparation method disclosed by the invention, distribution of active metals is promoted by improving the surface morphology of the carrier, so that the activity of the catalyst is improved.

The invention belongs to the technical field of coating preparation, and provides a fireproof heat-insulating nano ceramic coating for a lithium battery and a preparation method of the fireproof heat-insulating nano ceramic coating. The coating is a water-based two-component system, in a first component, bisphenol A diglycidyl ether, compound colloidal silicon dioxide, boehmite and nano zirconium oxide and / or nano aluminum oxide are used for constructing a ceramic skeleton, and aerogel, hollow glass beads, expanded vermiculite and / or flaky mica and inorganic fibers are combined to form a heat insulation network; the flame-retardant system contains ammonium polyphosphate, pentaerythritol, melamine components, zinc borate and sealing glass powder, silane interface bonding components and thermal expansion microspheres are introduced, an expansion thermal insulation layer is formed when the flame-retardant system is heated, and the flame-retardant system is densified into a hard shell at high temperature; the second component is a water dispersible amine curing agent; the preparation method comprises the following steps: adding the interface bonding components step by step, and sequentially compounding the inorganic phase and the flame-retardant heat-insulating phase to obtain the double-component packaged coating which is suitable for safety protection of a lithium battery system.

The invention relates to the technical field of thermal spraying materials, in particular to a preparation method and application of high-density yttrium-aluminum composite spraying granulation powder. The preparation method comprises the following steps: dissolving Y (NO3) 3.6 H2O and boehmite powder in deionized water to obtain a clear solution; under vigorous stirring, dropwise adding a precipitant into the clear solution, then adding urea, uniformly mixing, heating and continuously stirring until the reaction is complete and the solution becomes turbid; standing, collecting precipitate, washing and drying to obtain precursor powder; calcining the dried precursor powder in a high-temperature furnace to obtain YAG mixed powder; pouring the YAG mixed powder, a binder and an antioxidant into pure water, stirring, and carrying out ball milling to form composite slurry; performing spray granulation on the composite slurry to obtain spherical granulation powder; the uniform distribution of yttrium in the obtained granulated powder and the synergistic effect of BN remarkably improve the oxidation resistance and high-temperature stability of the coating; splashing and pores in the spraying process are reduced through the spherical particles, and the compactness of the coating is improved.

The invention relates to the technical field of inorganic porous materials, and particularly discloses a preparation method of pseudo-boehmite for chloromethane. The preparation method comprises the following steps: S1, adding sodium-free aluminum salt, zirconium nitrate pentahydrate and tetrabutyl titanate into a mixed solvent, adding a complexing agent, then adding nano boehmite, uniformly mixing, firstly adjusting the pH value to 7.5-8.0, heating to 25-35 DEG C, mixing, then adjusting the pH value to 5.5-6.0, and mixing to obtain uniform sol; s2, urea and ammonium bicarbonate are mixed and dissolved in water, ammonium zirconium carbonate is added, and a mixed solution B is obtained; and S3, adding the mixed solution B into the uniform sol, uniformly mixing, carrying out gradient heating reaction, and then carrying out solid-liquid separation, washing and drying to obtain the pseudo-boehmite for chloromethane. The prepared pseudo-boehmite for chloromethane has the advantages of extremely low sodium content, high specific surface area and excellent thermal stability.

The application relates to the technical field of cables, and discloses a high-flame-retardant low-smoke cloth electric wire, which comprises a cable core and an insulating layer arranged outside the cable core; the insulating layer comprises the following raw materials in parts by weight: polyolefin 60-80 parts, ethylene-vinyl acetate copolymer 10-20 parts, a compatilizer 5-10 parts, a flame-retardant system 10-15 parts, a reinforcing system 4-12 parts and a crosslinking agent 2-4 parts; the flame-retardant system comprises the following components in parts by weight: boehmite 5-10 parts, wollastonite 5-10 parts and phytate 1-4 parts. The technical scheme can solve the problem of insufficient flame retardance of the cloth electric wire in the related art.

The invention provides a preparation method of a modified beta ''-aluminum oxide solid electrolyte, which comprises the following steps: carrying out first mixing and ball milling on calcined boehmite, sodium carbonate and a first lattice stabilizer, and calcining the mixed powder; mixing and ball-milling the calcined powder and a second lattice stabilizer for the second time, carrying out spray granulation, and then carrying out compression molding and sintering to obtain the modified beta ''-aluminum oxide solid electrolyte, wherein the first lattice stabilizer is LiOH.H2O, and the second lattice stabilizer is a mixture containing MgO and TiO2; or, the first lattice stabilizer is a mixture containing LiOH.H2O and MgO, and the second lattice stabilizer is TiO2; the mass ratio of the calcined boehmite to the sodium carbonate to the sum of the first lattice stabilizer and the second lattice stabilizer is (25-28): (4.5-5): 1; the mass ratio of the LiOH.H2O to the MgO to the TiO2 is (5 to 7) to (1.5 to 2) to 1.

Disclosed in the present specification is an anode for a secondary battery, comprising: an anode current collector; and an anode active material layer formed on at least one surface of the anode current collector, wherein the anode active material layer comprises anode active material particles and electrode additive particles, the anode active material particles and the electrode additive particles being dispersed on the anode active material layer and the electrode additive particles comprising non-reducible ceramic particles, wherein the non-reducible ceramic particles comprise at least one of boehmite, magnesium oxide (MgO) and alumina (Al2O3).

A method of manufacturing an optical member includes forming a first layer on a light transmissive substrate by atomic layer deposition, converting a surface layer of the first layer into a boehmite layer, and forming a second layer by atomic layer deposition so as to cover the boehmite layer. The first layer includes aluminum oxide and has a first thickness. The second layer has a second thickness less than the first thickness.

This invention belongs to the field of petrochemical technology, specifically relating to a high-purity pseudoboehmite with concentrated pore size and its preparation method. The preparation method includes: mixing aluminum sulfate solution with ammonia water for a primary neutralization reaction; adding ammonia water and a pore-expanding agent to the resulting slurry for a secondary neutralization reaction; subsequently heating and allowing it to age; filtering, washing, drying, and pulverizing the aged product to obtain high-purity pseudoboehmite. The preparation method of this invention employs co-current and overflow neutralization, reducing the process flow and simplifying operation. It solves the problems of high synthesis cost, complex operation, and environmental pollution in existing pseudoboehmite synthesis methods. The generated byproduct, ammonium sulfate, has certain industrial application value. The pseudoboehmite obtained by this invention has the advantages of large specific surface area, large pore volume, and uniform and concentrated pore size distribution.

This invention discloses the application of a combined collector in reverse flotation separation of lithium chlorite, belonging to the field of mineral flotation separation technology. The combined collector comprises dodecylamine, acetic acid, and sodium oleate. The mass ratio of dodecylamine, acetic acid, and sodium oleate in the combined collector is 1:0.1-0.2:9-11. This invention uses a combined collector composed of NaOL, DDA, and acetic acid as a collector for reverse flotation separation of lithium chlorite, which can effectively separate lithium chlorite from boehmite and kaolinite in clay-type lithium ores, thereby achieving pre-enrichment of clay-type lithium ores and reducing the amount of material processed in subsequent roasting for lithium extraction. The combined collector used in this invention has advantages such as wide availability of raw materials, low cost, simple preparation, convenient use, strong collecting ability, and good foaming performance.

The invention provides a waste plastic oil catalytic cracking catalyst and a preparation method thereof.The method comprises the steps that pseudo-boehmite and zinc salt are mixed and subjected to ball milling, and a zinc-aluminum composite material is obtained; roasting kaolin, and then treating with aluminum sol to obtain a modified kaolin solution; mixing and pulping the modified kaolin solution, the zinc-aluminum composite material, an REY molecular sieve, a phosphorus modified ZSM-5 molecular sieve, a macroporous template agent and water, performing spray drying to prepare microspheres, and roasting to obtain the waste plastic oil catalytic cracking catalyst. Through preparation of the zinc-aluminum composite material and a modification chambering technology, the pore structure and calcium and iron metal pollution resistance of the catalytic cracking catalyst are improved, so that the catalytic cracking catalyst has relatively good cracking performance on the waste plastic oil, the yield of light oil is high, the yield of coke is low, and the conversion efficiency of the waste plastic oil is improved.

The application belongs to the technical field of inorganic functional material preparation, and discloses an energy-saving preparation method of high-purity and high-crystallinity aluminum sol. First, pseudo-boehmite powder prepared by an alcoholate method is mixed with deionized water, and hydrothermal crystallization treatment is performed to enrich the hydroxyl group on the surface of the pseudo-boehmite and improve the peptization performance of the pseudo-boehmite, so that high-crystallinity pseudo-boehmite slurry is obtained; then, an acid peptizing agent is added to the obtained slurry, and hydrothermal peptization treatment is performed, and the high-purity and high-crystallinity aluminum sol is obtained after cooling. The application adopts a two-step hydrothermal process of 'hydrothermal crystallization-hydrothermal peptization', and the drying step in the previous process is omitted, so that the energy consumption is greatly reduced. The particle size of the obtained aluminum sol is less than 100 nm, the Zeta potential is stably maintained at more than 30 mV, the colloidal stability is excellent, and no precipitation is generated after being placed for 6 months. The application has a wide process window, high controllability and high product purity, and is suitable for the fields of catalysis, ceramics, coating and lithium batteries.

The present application belongs to the technical field of cleaning. Disclosed are a boehmite cleaning device and a usage method therefor. The boehmite cleaning device comprises a support assembly and a chain, wherein a cleaning barrel assembly is provided at the top of the support assembly; a filter screen assembly is rotationally connected in the cleaning barrel assembly; a transmission assembly and a driving assembly are respectively mounted on the outer side of the cleaning barrel assembly; and the chain is nested on the filter screen assembly, the transmission assembly and the driving assembly. In the present application, by means of the provision of the transmission assembly, the rotational speed of a filter screen and the rotational speed of a barrel body can be uniformly adjusted; in addition, rotating the filter screen and swinging the barrel body can displace boehmite, making it easier to clean the surface of the boehmite, thereby solving the technical problem whereby common cleaning devices cannot completely clean the surface of boehmite and tend to increase the reject rate due to the irregular morphology of the boehmite and the tendency thereof to stack together.

The invention relates to the technical field of special aluminum oxide or fine aluminum oxide, in particular to high-activity and high-purity corundum micro powder as well as a preparation method and application thereof. Comprising the following steps: S1, preparing aluminum hydroxide micro powder by taking a sodium aluminate solution as a raw material through high-temperature seed precipitation; s2, calcining the aluminum hydroxide micro powder obtained in the step S1 at a high temperature to prepare alpha-Al2O3 corundum micro powder; s3, carrying out wet treatment on the alpha-Al2O3 corundum micro powder obtained in S2, generating boehmite on the surface of the alpha-Al2O3 corundum micro powder, and forming a corundum-boehmite mixed phase with a core-shell structure; and S4, roasting or calcining the corundum-boehmite mixture obtained in S3 at high temperature to generate the high-activity and high-purity corundum micro powder. According to the invention, a layer of high-activity alpha-Al2O3 is modified on the surface of high-density alpha-Al2O3 to form'in-phase and heterogeneous' alpha-Al2O3 micro powder, and sintering at 1500 DEG C to obtain the aluminum oxide ceramic of which the relative density is greater than 98% and the Vickers hardness is greater than 25 GPa.

The invention belongs to the technical field of functional paper. The invention relates to release paper, in particular to double-plastic double-silicon release paper and a preparation method thereof. The release paper product comprises a kraft paper base material layer, a first plastic film layer and a first organic silicon layer which are positioned on one side of the kraft paper base material layer, and a second plastic film layer and a second organic silicon layer which are positioned on the other side of the kraft paper base material layer, the first plastic film layer is positioned between the kraft paper base material layer and the first organic silicon layer; the second plastic film layer is positioned between the kraft paper base material layer and the second organic silicon layer; moreover, a first transition layer is clamped between the kraft paper base material layer and the first plastic film layer; a second transition layer is clamped between the kraft paper base material layer and the second plastic film layer; the first transition layer and the second transition layer comprise PVDF (Polyvinylidene Fluoride) and boehmite; the mass of the PVDF is 3.6 to 4.0 times that of the boehmite.

The application discloses a preparation method of spherical boehmite and relates to the technical field of inorganic materials. The spherical boehmite prepared by the method has high sphericity and can be used as a reinforcing agent to fill materials such as potting adhesive, paint, rubber, plastic, electronic substrate and battery diaphragm. Compared with boehmite directly obtained by hydrothermal reaction of aluminum hydroxide, the spherical boehmite prepared by the method has a smaller specific surface area and a smaller influence on the viscosity of a polymer system, so that a higher filling amount can be realized, and the spherical boehmite can also be used as a flame retardant to effectively improve the flame retardant performance of the polymer system.

The invention discloses a lithium ion battery diaphragm capable of improving hemming and increasing heat resistance and a preparation method thereof.The lithium ion battery diaphragm comprises a base membrane and a coating on the base membrane, the coating is obtained by coating slurry, and the method for preparing the slurry comprises the steps that water, a dispersing agent, an inorganic material, a first binder, a second binder and a wetting agent are mixed to be uniform, and the slurry is obtained; the inorganic material is one or a mixture of more of barium sulfate, boehmite, aluminum oxide, aluminum hydroxide, magnesium oxide and silicon oxide. The slurry comprises the first binder and the second binder, and the first binder and the second binder synergistically enable the diaphragm to be comprehensively improved in the aspects of thermal shrinkage, mechanical strength and binding power. Besides, the coating is in good contact with the base membrane, so that the problem of poor hemming caused by inconsistent tension on the coating and the base membrane in the preparation process of the diaphragm is solved, the rejection rate of the diaphragm is further reduced, and the production efficiency is improved.

The application discloses a kind of salt fog resistant nano organic clay rheological agents and preparation method thereof.The rheological agent includes boehmite 8-15 parts, sodium bentonite 24-60 parts, quaternary ammonium salt 20-40 parts, silane coupling agent 1.5-4.8 parts, structure directing agent 1.5-4.5 parts, dispersant 0.1-0.3 parts by weight fraction.Preparation method includes boehmite nanocrystal hydrothermal synthesis, bentonite ultrasonic-high pressure homogenization synergistic exfoliation, quaternary ammonium salt ion exchange intercalation modification, in-situ composite assembly, silane coupling agent surface modification and product forming and other key steps.By the layered structure of boehmite nanocrystal and bentonite sheet layer form synergistic composite, after silane coupling agent chemical bonding modification, build stable organic-inorganic composite structure.The rheological agent shows excellent rheological regulation performance, salt fog corrosion resistance and environmental adaptability, suitable for harsh environment such as marine engineering rheological regulation application.

The invention provides a modified hollow glass bead. The modified hollow glass bead comprises a hollow glass bead and a coating layer which is compounded on the surface of the hollow glass bead and consists of nano-sheet boehmite, the coating layer has the morphology that boehmite nanosheets are arranged in a staggered manner. The invention also provides a corresponding preparation method of the modified hollow glass bead, the nano coating layer grown by the hydrothermal method can grow a high-temperature-resistant protective layer which is strong in binding force, uniform and compact and has excellent sound insulation and sound absorption performance on the surface of the bead in situ, so that on the premise that the original excellent performance of the bead is not obviously changed, the heat insulation and sound absorption performance of the bead is greatly improved. The temperature resistance limit and the sound insulation and absorption performance are improved to a brand new level, so that the application requirements in an extreme environment are met.

The invention discloses a method for solidifying radionuclide technetium in a solution and application of the method, and belongs to the technical field of spent fuel post-treatment. The curing method comprises the following steps: firstly, acidifying a technetium-containing solution by using nitric acid, then adding the acidified technetium-containing solution into a sodium metaaluminate solution, and reacting under a low-temperature condition to ensure that technetium is covalently bonded with high-activity mu < 1->-OH in a curing product in a form of pertechnetate (TcO4 <->) and is cured in pseudo-boehmite-like mixed crystals with stable crystal structures; the curing method is mild in operation condition and simple in technological process, overcomes the defects that in a traditional cement curing and glass curing method, the size of a cured product is increased, technetium is prone to volatilization and the like, has the advantages of being small in cured product size, high in curing efficiency, low in cost and environmentally friendly, the maximum curing amount can reach 100 mg / g, and the curing method is suitable for industrial production. The method is suitable for treating technetium-containing acidic nucleus waste liquid generated in the spent fuel post-treatment process.