499 results about "Phosphorus containing" patented technology

The invention discloses a phosphorus-sulfur synergistic flame retardant with high gas phase activity, a durable flame-retardant nylon fabric and a preparation method of the flame-retardant nylon fabric, and relates to the technical field of flame-retardant nylon fabric preparation.The preparation method of the phosphorus-sulfur synergistic flame retardant comprises the steps that 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and polyepoxide are mixed and heated to be molten for a reaction, and the phosphorus-sulfur synergistic flame retardant is obtained; obtaining an intermediate after the reaction is finished; the intermediate and a thiophenethiol derivative are subjected to a click chemical reaction, and a 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide derivative containing phosphorus and sulfur is obtained; the preparation method comprises the following steps: dissolving a 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide derivative containing phosphorus and sulfur into a mixed solvent of ethanol and water, so as to obtain the phosphorus-sulfur synergistic flame retardant with high gas phase activity. The raw materials are safe and environmentally friendly, the preparation method is simple, and the prepared flame-retardant nylon fabric is excellent in flame retardance and washing resistance and free of pollution in the using process.

The invention discloses a grading reaction crystallization recovery process and system for semiconductor fluorine-containing and phosphorus-containing waste liquid, the fluorine-containing and phosphorus-containing waste liquid and a lime solution react in a fluorine recovery crystallization reactor under the condition that the pH is 3-4 to form calcium fluoride crystals, and the calcium fluoride crystals are dehydrated to obtain calcium fluoride particle crystal products; the effluent of the fluorine recovery crystallization reactor, the calcium fluoride crystal dehydration filtrate, the lime solution and the calcium chloride solution react in a secondary reaction tank under the condition that the pH is 5-6, and calcium fluoride, fluorapatite, silicon dioxide and silicon-aluminum precipitates are removed through coagulation, flocculation and precipitation; effluent of the second-stage reaction tank, the lime solution and the calcium chloride solution react in the phosphorus recovery crystallization reactor under the condition that the pH is 7-8 to generate hydroxyapatite crystals, and the hydroxyapatite crystals are dehydrated to obtain hydroxyl calcium phosphate particle crystal products. Meanwhile, a high-purity calcium fluoride crystal product and a hydroxyl calcium phosphate crystal product are produced, and fluorine and phosphorus are recycled.

The invention provides a phosphorus-based ionic liquid flame-retardant polymer solid electrolyte and a preparation method and application thereof, belongs to the technical field of polymer solid electrolyte materials, and relates to a phosphorus-containing group flame-retardant ionic liquid polymer electrolyte and a preparation method thereof. The invention aims to overcome the problems that the polymer electrolyte in the prior art is poor in safety and the battery performance needs to be further improved, and provides the ionic liquid polymer electrolyte with the flame-retardant characteristic, the polymer electrolyte can greatly improve the safety performance of the battery while improving the battery performance, and the service life of the battery is prolonged. The phosphate group-containing ionic liquid has the advantages that the phosphate group-containing ionic liquid can be used as a polymer matrix of a polymer solid electrolyte, so that enough mechanical strength is ensured, phosphate radicals play a flame-retardant effect in a reaction process, a combustion reaction can be interrupted, and the safety performance of a battery can be greatly improved while the performance of the battery is improved.

This invention relates to a highly efficient functional ceramsite for purifying phosphorus-containing wastewater, its preparation method, and its application. Based on a complementary functional strategy, it uses natural clay rich in Al2O3 and SiO2 as a binder and calcium-rich industrial solid waste as the calcium-rich active component. Functional additives are also added to mitigate pH changes caused by calcium oxide reactions. The above raw materials are calcined at high temperature to obtain inexpensive, calcium-rich functional ceramsite with high mechanical strength, large adsorption capacity, and ecological safety. This effectively solves the common problems of increased water pH and poor phosphate adsorption capacity at neutral pH in calcium-based ceramsite, achieving highly efficient phosphorus purification in water. This invention uses inexpensive and readily available natural clay and calcium-rich industrial solid waste as raw materials, resulting in low cost, good effect, and effective application in the treatment of low-pollution water.

A preparation method of the cardanol-based phosphorus-containing side group novolac epoxy resin comprises the following steps: (1) in the presence of a catalyst A, carrying out a stirring reaction on cardanol and an aldehyde compound at 80-110 DEG C for 3-10 h to prepare an intermediate A; (2) stirring the intermediate A and a phosphorus-containing compound at 50-150 DEG C to react for 10-24 hours to prepare an intermediate B; and (3) in the presence of a catalyst B, stirring and reacting the intermediate B and epichlorohydrin at 70-110 DEG C for 2-6 hours, and in the presence of a catalyst C, stirring and reacting at 30-65 DEG C for 1-4 hours to prepare the cardanol-based phosphorus-containing side group novolac epoxy resin. Through a rigid structure on a main chain of the novolac epoxy resin, a phosphorus-containing structure on a side chain of the novolac epoxy resin and an epoxy group, the toughness and flame retardance of an epoxy cured product can be improved on the premise that the thermal stability is not reduced, and the novolac epoxy resin has an extremely good application research prospect.

The invention discloses a novel phosphorus-containing macromolecular flame retardant and a preparation method and application thereof, the flame retardant is a polymer with a general formula (I), the main chain of the flame retardant is composed of an olefin-containing phosphonate structural unit, and the side chain R2 is a phosphonate group or a phosphonate metal salt group. The preparation method comprises the following steps: firstly, carrying out reaction on trialkyl phosphite and halogenated olefin containing active groups to efficiently prepare a functional monomer containing polymerizable double bonds and phosphonate side chains; then carrying out free radical polymerization to obtain a macromolecular polymer; the phosphonate can be further partially or completely hydrolyzed and complexed with multivalent metal ions to form the flame retardant with an ionic cross-linked structure. The macromolecular flame retardant is high in phosphorus content, good in thermal stability and excellent in compatibility with a polymer matrix, can play a flame-retardant role in a condensed phase and a gas phase at the same time, and effectively overcomes the problems that a micromolecular flame retardant is easy to migrate and poor in durability, and the mechanical property of a matrix material is reduced. The preparation method is efficient, controllable and suitable for continuous production.

The invention discloses a flame-retardant epoxy resin coating and a preparation process thereof, and relates to the technical field of flame-retardant epoxy coatings. 20-50 parts of a curing agent; 5-30 parts of a modified flame retardant; 10-30 parts of an organic solvent; 0.1 to 5 parts of an auxiliary agent; the modified flame retardant is an organic-inorganic hybrid polymer containing phosphorus, nitrogen and silicon. By introducing a hyperbranched structure containing phosphorus, nitrogen and silicon, synergistic flame retardance of a gas phase and a condensed phase is achieved, a compact carbon layer is formed when the coating is heated, the adhesive force of a coating and a base material is enhanced through the chemical bonding effect, dispersity and toughness are improved through a unique molecular structure, brittle cracking is avoided, and the coating has good flame retardance. The problems that a traditional coating is prone to migration, poor in adhesive force and insufficient in water resistance are solved, and the paint has excellent comprehensive performance.

The invention discloses amphiphilic phosphorus-loaded biomass gel and a preparation method and application thereof, and the preparation method comprises the following steps: dissolving a hydrophilic natural polymer material in a solvent to form a uniformly dispersed biomass gel emulsion; activating the biomass gel emulsion by an activating agent A and an activating agent B to obtain pre-activated biomass gel emulsion; dissolving a long-chain alkyl material in water to form a uniformly dispersed emulsion, and uniformly mixing the uniformly dispersed emulsion with the pre-activated biomass gel to obtain a modified biomass gel emulsion; adding a phosphorus-containing solvent and a pore-foaming agent, and mixing to form a porous gel emulsion; after the porous gel emulsion and the biomass gel emulsion are fully mixed, a cross-linking agent is added for a cross-linking reaction. The gel obtained by the invention has an amphiphilic structure of a hydrophobic microcell and a phosphorus-containing hydrophilic group, can play a synergistic effect of electrostatic attraction and hydrophobic repulsion, and realizes selective separation and recovery of rare earth elements in water; the preparation method is simple, raw materials are green, and the method is suitable for large-scale production and has good application prospects.

A process includes contacting one or more bio feedstocks and one or more waste plastic feedstocks with a deactivated cracking catalyst comprising a phosphorus-containing ZSM-5 catalyst at catalytic cracking conditions to obtain a product stream containing hydrocarbons, and separating at least one hydrocarbon fraction from the product stream, wherein the deactivated cracking catalyst contains at least one metal contaminant.

The invention provides a method for removing phosphorus from a cobalt sulfate solution. The method comprises the following steps: providing a cobaltous sulfate solution to be treated; the method comprises the following steps: mixing a to-be-treated cobaltous sulfate solution, a composite polymer soluble ferric salt and a coagulant aid, carrying out precipitation reaction, and separating to obtain phosphorus-containing slag and cobaltous sulfate primary purified liquid; a deep phosphorus removal adsorbent is adopted to adsorb trace phosphorus in the cobalt sulfate primary purification liquid, then trace iron in the cobalt sulfate primary purification liquid generates precipitates in an oxygen-containing atmosphere, and after separation, a cobalt sulfate secondary purification liquid is obtained. According to the method, firstly, the synergistic effect of the composite polymer soluble ferric salt and the coagulant aid is adopted, and primary efficient removal of phosphorus is achieved; then, a deep phosphorus removal adsorbent is used for directionally adsorbing trace phosphorus in the cobalt sulfate primary purification liquid, so that deep removal of phosphorus is further realized; and finally, the residual trace iron is precipitated and separated in the oxygen-containing atmosphere, so that the purity of the secondary purified cobalt sulfate liquid is further guaranteed.

The invention relates to the technical field of batteries, and particularly discloses a composite current collector and a preparation method and application thereof. The composite current collector comprises a thin film substrate, and a phosphorus-containing monomer is introduced into the surface of the thin film substrate through plasma treatment; an aluminum conductive layer disposed on at least one side surface of the film substrate; the surface functional layer is arranged on the surface of one side, far away from the thin film substrate, of the aluminum conducting layer, and the surface functional layer comprises a fluorine-containing polymer layer and a nanotube composite layer which are sequentially arranged from inside to outside. Phosphorus-containing monomers (phosphoric acid groups and ester derivatives thereof) are introduced to a film substrate, oxygen atoms or hydroxyl groups in key functional groups of the phosphoric acid groups and the ester derivatives thereof interact with metal ions strongly to form coordinate bonds to enhance the interface bonding force between an aluminum conductive layer and a PET film, and a surface functional layer is combined to block electrolyte permeation, so that the film has a good anti-corrosion effect. And the nanotubes in the surface functional layer form a three-dimensional conductive network, so that the contact resistance is reduced, and the conductivity is enhanced.

The invention discloses a chromium-free high-temperature-resistant treating fluid, a hot-dip aluminum-zinc environment-friendly coating plate and a preparation method of the hot-dip aluminum-zinc environment-friendly coating plate, and belongs to the technical field of hot-dip aluminum-zinc plates. The treating fluid comprises a corrosion inhibitor, silane, a phosphate radical-containing substance, an inorganic acid and a surfactant, and is prepared step by step according to a specific sequence. The chromium-free coating with the thickness of 0.6-1.2 m can be formed by coating the surface of a hot-dip aluminum-zinc plate with the chromium-free coating in a roller coating manner and curing at the temperature of 80-150 DEG C. The coating does not contain organic matters, does not yellow within 30 minutes at the high temperature of 390 DEG C, has excellent corrosion resistance, fingerprint resistance, alkali resistance and coatability, is suitable for inner plates of high-temperature household appliances such as microwave ovens and ovens, and has the characteristics of environment friendliness and high performance.

This invention relates to a sodium-supplementing material capable of simultaneously replenishing active sodium and sodium hexafluorophosphate, and its preparation and application. The sodium-supplementing material comprises the following raw material components by weight percentage: 10-50% elemental phosphorus, 50-90% sodium fluoride, and 1-5% Ketjen Black. Compared with existing technologies, the phosphorus-based bifunctional sodium-supplementing separator and sodium-supplementing cathode provided by this invention not only possess higher theoretical capacity, effectively compensating for irreversible capacity loss during the first cycle of the battery, but also generate NaPF6 in situ under electrochemical conditions through the synergistic reaction of red phosphorus and sodium fluoride, achieving simultaneous replenishment of active sodium and electrolyte sodium salts, thereby improving the initial coulombic efficiency and long-term cycle performance of the battery.

The application relates to the technical field of halogen-free flame-retardant resins, in particular to a high-heat-resistance low-water-absorption reactive phosphorus-containing flame retardant as well as a preparation method and application thereof. The phosphorus-containing flame retardant has a molecular structure as shown in formula 1, wherein the R1 group comprises at least one of,,,,,,,,,, and ; the value of n satisfies 0 < n <= 50, and the value of n is an integer. The phosphorus-containing flame retardant is designed in multiple dimensions through a molecular structure, comprehensively improves the comprehensive performance of a copper-clad plate, and fundamentally solves the water absorption problem of a phosphorus-based flame retardant.

The invention provides a magnetic composite material and a preparation method and application thereof. The preparation method comprises the steps that mixed dispersion liquid containing a magnetic material, a magnesium source, a phosphorus source and a solvent is provided, the phosphorus source contains phosphate radicals or can be decomposed into phosphate radicals in the solvent, the pH value of the mixed dispersion liquid is controlled to be 7-12, the magnesium source and the phosphorus source are subjected to a chemical reaction, and the magnetic material is obtained. A magnesium-containing coating layer is formed on the surface of the magnetic material, the magnesium-containing coating layer contains Mg, P and O elements, and the magnetic composite material is obtained. According to the preparation method provided by the invention, the magnesium-containing coating layer which is uniform, compact, high in binding force and hard can be formed on the surface of the magnetic material, and the magnesium-containing coating layer is excellent in high-temperature resistance and high-pressure resistance and is not easy to crack in the hot-pressing treatment process.

This invention provides a phosphorus-free, multifunctional, environmentally friendly scouring agent, its preparation method, and its application, belonging to the field of textile printing and dyeing technology. The surfactants used in this invention (including 2-ethylhexanol alkyl glycoside, 2-propylheptanol alkyl glycoside, 2-propylheptanol xyloside, and isomeric tridecyl alcohol ether carboxylic acid) are all nonionic surfactants. The resulting phosphorus-free, multifunctional, environmentally friendly scouring agent is easily soluble in water, acid-resistant, resistant to high-concentration strong alkalis, hard water-resistant, low-foaming, and has strong penetrating power. It is widely applicable to cotton and its blended textile processes, achieving excellent whiteness and wicking effect in conventional annealing / scouring / bleaching processes. It contains no alkylphenol polyoxyethylene ethers or organophosphates, causing no environmental pollution and simplifying and making textile pretreatment processes more environmentally friendly.

The present application relates to an environment-responsive intelligent controlled-release organic fertilizer and a preparation method thereof, and belongs to the technical field of composite organic fertilizer. In order to solve the problem that the traditional soil improvement method cannot simultaneously improve the efficiency of phosphorus supply and the soil, the present application provides a preparation method of an environment-responsive intelligent controlled-release organic fertilizer. The method comprises the following steps: crushing and drying agricultural and forestry waste, and then placing the waste in a calcium source compound solution to complete preloading; drying and grinding to obtain a preloaded sample; pyrolyzing the preloaded sample in an inert atmosphere to obtain calcium-modified biochar; mixing the calcium-modified biochar with a phosphorus-containing solution to perform adsorption, thereby obtaining phosphorus-loaded biochar; and mixing the phosphorus-loaded biochar with peat and a binder, and then granulating and forming to obtain the organic fertilizer. The organic fertilizer has the environment-responsive characteristic, can adapt to the growth of crops in a three-stage phosphorus release mode, can reduce phosphorus fixation, can improve the soil structure, can stabilize the soil pH, and can improve the differentiation of the micro-niche ecological niche of the soil.

The invention relates to a vertical flow biological induction dephosphorization system and a dephosphorization process. The system comprises a reactor body, an inner barrel and an outer barrel, wherein the inner barrel and the outer barrel form an inner reaction cavity and an outer reaction cavity; the flow guide device is communicated to the axial bottom end of the inner cylinder; the aeration device is arranged in the flow guide device and is used for aerating upwards; and the dephosphorization agent adding device is used for adding a dephosphorization agent while crushing particles below the flow guide device. By additionally arranging a dephosphorization agent adding device, large-particle-size anaerobic ammonia oxidation particles are crushed, a dephosphorization agent is added at the same time, an alkaline environment created by hydroxyl radicals generated by anaerobic ammonia oxidation reaction and microorganisms are used for synergistically promoting a dephosphorization path, a biological induced crystallization reaction is enhanced, and the dephosphorization effect is improved. According to the invention, calcium and magnesium ions are added into the phosphorus removal agent, the excessive calcium and magnesium ions and phosphate ions in the sewage are promoted to be subjected to a crystallization reaction, the free phosphate ions are converted into phosphorus-containing precipitates, the purposes of phosphorus removal and phosphorus resource recovery can be achieved, the dosage of alkaline agents in the phosphorus removal agent can be reduced, and considerable economic benefits are achieved.

The invention discloses a neutral phosphine phenol nickel catalyst based on a tert-butyl structure. The catalyst has a structure shown as a formula (I), wherein R1 and R2 are respectively and independently selected from hydrogen, C1-C20 alkyl, fluorine, chlorine, bromine, iodine, nitryl, hydroxyl, substituted silicon group and C1-C20 substituted alkyl; r3 is independently selected from C1-C20 alkyl, C1-C20 substituted alkyl, phenyl or substituted phenyl, R4 and R5 are independently selected from hydrogen, fluorine, chlorine, bromine, iodine, C1-C20 alkyl, aryl, an oxygen-containing group, a nitrogen-containing group, a sulfur-containing group, a boron-containing group, an aluminum-containing group, a phosphorus-containing group, a silicon-containing group or a tin-containing group; tert-butyl is introduced into para-position and meta-position of a ligand phenol oxygen ring, and a protection barrier is formed by utilizing the steric hindrance effect of the t-butyl, so that decomposition and deactivation of the catalyst under a high-temperature condition are inhibited, the catalyst can stably play a catalytic role in an industrial common medium-high-temperature polymerization environment, and the process adaptation range of the catalyst is widened.

This invention provides a phosphorus-containing flame retardant, its preparation method and application, and a resin composition and its application, specifically relating to the field of polymer materials technology. The phosphorus-containing flame retardant provided by this invention achieves an integrated design of the flame-retardant unit and the elastic matrix at the molecular scale by directionally and controllably grafting phosphorus-containing groups M onto the active sites of the polybutadiene soft segments in a styrene-butadiene-styrene block copolymer via covalent bonds. This structure retains the inherent high flexibility, impact resistance, and processing rheological properties of the styrene-butadiene-styrene block copolymer while imparting intrinsic, durable, and uniformly distributed flame-retardant capabilities to the material. Simultaneously, because the phosphorus element is anchored to the polymer backbone / side chain, no small molecule polar impurities are introduced, significantly suppressing dielectric polarization loss and hygroscopicity increases. This provides a structural basis and performance guarantee for the subsequent construction of a high-end thermosetting resin system for copper-clad laminates with low Dk / Df, high Tg, and low CTE.

The invention belongs to the technical field of electrode foil formation treatment, and particularly relates to a preparation method of an electrode foil, the electrode foil and an aluminum electrolytic capacitor. The preparation method comprises the following steps: carrying out first-stage formation, second-stage formation, repair treatment and third-stage formation on an aluminum foil; the first-stage formation and the third-stage formation are independently carried out in a treatment solution containing a boron element; the secondary formation is carried out in a treatment solution containing a phosphorus element; the repairing treatment is carried out in treating fluid containing rare earth ions. According to the preparation method of the electrode foil, the phosphorus-containing active substances and the rare earth ions are introduced into the formation process, the effects of reducing energy consumption and improving the specific volume and the CV product of the electrode foil are achieved, and meanwhile the leakage current of the electrode foil is reduced.

The invention discloses a pretreatment method for recycling phosphorus in sludge, which is characterized in that the sludge is subjected to reduction treatment by adopting aerobic biological decomposition drying, phosphorus is screened and fixed, and then phosphorus is recycled through pickling, the pretreatment method for recycling phosphorus in sludge is provided, the method is simple to operate, the cost is low, and the method is suitable for industrial production. The sludge is subjected to reduction treatment, resource recovery of phosphorus in the sludge is realized, and the problem of environmental pollution caused by loss of phosphorus in wastewater is prevented.

This invention relates to the field of zirconium-based amorphous alloy preparation technology, specifically to a phosphorus-containing bulk zirconium-based amorphous alloy and its preparation method. The general formula for the composition of this zirconium-based amorphous alloy is: (Zr... a Cu b Al c M （100‑a‑b‑c） ) 100‑x P x Where 53.5≤a≤60, 25≤b≤33.3, 7.5≤c≤10, 0.35≤x≤0.6, and a, b, c, and x are atomic ratios, and M is one or more of Fe, Co, Ni, and Nb. Phosphorus is introduced into the alloy in the form of a copper-phosphorus alloy, resulting in an amorphous fraction greater than or equal to 80%. Adding phosphorus can significantly improve the gas efficaciousness (GFA) of the matrix alloy, increasing the critical diameter for amorphous formation from 3-5 mm to 8-14 mm, and the compressive fracture strength from 1.8 GPa to 2.4 GPa. The zirconium-based amorphous alloy has a large critical diameter for amorphous formation and good thermal stability.

A kind of high nitrogen-containing phosphorus wastewater treatment system, including pH adjusting pool, primary reaction pool, sedimentation tank, secondary reaction pool, air floatation tank, filter tank, electrochemical reaction tank and clear water tank in series in proper order;The electrochemical reaction tank includes electrochemical device, electrochemical device is assembled by multiple independent box, it is arranged in a row in the form of '' one '' character, the cavity in each box forms a reaction chamber, and the connecting side of adjacent box is equipped with communicating port, after sealing connection of adjacent box, communicating port of adjacent box is interconnected, and exchange membrane is installed between the communicating port of adjacent box.This utility model directly degrades organic pollutants by electrode reaction, long-term operation cost is lower than traditional technology, achieves the simultaneous recycling of nitrogen and phosphorus, and helps to realize the sustainable development and resource recovery of wastewater treatment.

The invention discloses a preparation method of phosphorus-containing side group novolac epoxy resin, the phosphorus-containing side group novolac epoxy resin is prepared by reacting allyl-containing binary aromatic phenol, a phosphorus-containing compound, an aldehyde compound and epichlorohydrin, the preparation method comprises the following steps: (1) stirring the allyl-containing binary aromatic phenol and the phosphorus-containing compound at 100-190 DEG C to react for 6-30 hours to prepare an intermediate A; (2) in the presence of a catalyst A, stirring and reacting the intermediate A and an aldehyde compound at 60-130 DEG C for 3-12 hours to prepare an intermediate B; and (3) in the presence of a catalyst B, stirring the intermediate B and epichlorohydrin to react for 2-6 hours at 70-110 DEG C, and then in the presence of a catalyst C, stirring the intermediate B and epichlorohydrin to react for 2-6 hours at 30-65 DEG C to prepare the phosphorus-containing side group novolac epoxy resin. According to the phosphorus-containing side group novolac epoxy resin prepared by the preparation method disclosed by the invention, the toughness of a cured epoxy material can be improved while the safety and fire resistance of the cured epoxy material are improved.

The invention relates to the field of refractory materials, in particular to a high-strength refractory material and a preparation method thereof, which are used for solving the problem that the existing traditional refractory material is low in strength and difficult to meet the high-standard requirement of modern industry on equipment. The high-strength refractory material comprises the following components: silicon carbide, tabular corundum, silicon powder, yttrium oxide, magnesium oxide, titanium diboride and a phosphorus-containing phenyl multi-epoxy-group binding agent, according to the preparation method, silicon carbide, tabular corundum, silicon powder, yttrium oxide, magnesium oxide and titanium diboride are taken as main raw materials, the main raw materials are endowed with excellent mechanical properties, and after a phosphorus-containing phenyl polyepoxy binding agent is added, the mechanical properties of the main raw materials can be further remarkably improved, so that the prepared refractory material has the characteristics of high strength, high temperature resistance and the like. The composite material shows high durability and reliability in a high-temperature environment, and is suitable for thermal protection in the high-temperature environment and internal construction of high-temperature equipment.

The application discloses high-activity lime milk and a preparation method and application thereof, and comprises the following steps: performing ball milling treatment on calcium oxide, adding organic dispersant butyl formate and n-propanol into the calcium oxide powder after the ball milling treatment, performing first stirring, adding a retarder glycerol drop by drop under the stirring condition, standing for 1.5-2.5 hours, adding water into the reaction system to continue stirring uniformly, and naturally cooling to prepare the high-activity lime milk. The experiment proves that the high-activity lime milk can be used for harmless disposal of phosphogypsum and treatment of phosphorus and fluorine-containing wastewater, can effectively remove phosphates and fluorine ions, and the treated phosphogypsum and phosphorus and fluorine-containing wastewater meet relevant environmental pollution standards. The high-activity lime milk has simple preparation conditions, stable pollutant removal effect and small environmental pollution.

The invention discloses a method for deeply recovering phosphorus and vanadium from molten iron containing phosphorus and vanadium, which comprises the following steps: treating the molten iron containing phosphorus and vanadium by adopting an oxygen blowing method, in the oxygen blowing method, directly blowing mixed gas into the molten iron by utilizing a spray gun, the volume concentration of the oxidizing gas is 18%-50%. The method has the advantages of improving the recovery rate of phosphorus and vanadium, reducing the smoke amount and the like, and also has the characteristics of low cost, short process, environmental friendliness, less carbon emission, high heat utilization rate, full utilization of resources and the like.

The invention relates to the technical field of electrochemistry, in particular to a phosphorus-containing ureido pyrimidone monomer and a preparation method thereof, a gel electrolyte and a lithium battery. The phosphorus-containing ureido pyrimidone monomer is prepared by the following steps: reacting a phosphorus-containing hydroxyl compound with a diisocyanate compound to generate a phosphorus-containing isocyanate intermediate, reacting the phosphorus-containing isocyanate intermediate with a 2-amino-4-hydroxypyrimidine derivative to generate a urea intermediate, and reacting the urea intermediate with an acrylic anhydride compound. According to the phosphorus-containing ureido pyrimidone monomer, a dynamic self-repairing unit and a flame-retardant unit are integrated into the monomer from a molecular source, so that the monomer molecule has a flame-retardant function and a self-repairing function. The raw materials of the gel electrolyte comprise the phosphorus-containing ureido pyrimidone monomer, the gel electrolyte is prepared in the lithium battery through constant-temperature gradient boosting curing, the lithium battery is obtained, the gel electrolyte has good flame retardance and self-repairing performance, and the lithium battery has good conductivity, cycle performance and safety.