758 results about "Magnesium chlorate" patented technology

A fireproof magnesium oxide board is prepared by mixing the following raw materials, the raw material names and weight parts are as follows: 80-100 parts of magnesium oxide; 20-30 parts of anhydrous magnesium chloride; 10-20 parts of modified expanded vermiculite foaming agent; 20-30 parts of aluminum silicate fiber; 5-10 parts of sawdust; 10-15 parts of fly ash; 8-12 parts of glass magnesium board crushed powder; 1.5-5 parts of non-woven fabric; 10-20 parts of water; wherein the modified expanded vermiculite is prepared by the following steps: (1) Vermiculite is incompletely expanded and calcined; (2) acrylic acid monomer, sodium hydroxide, acrylamide monomer, initiator potassium persulfate, crosslinking aid pentaerythritol polyglycidyl ether, incompletely expanded vermiculite, and water are taken, stirred evenly and ultrasonically dispersed to obtain a first reaction solution, which is placed in a reactor for reaction to obtain a gel material; (3) the gel material is preliminarily crushed and dried, and then further crushed in a ball mill to obtain a fire-resistant expanded vermiculite with water absorption performance.

The invention discloses a preparation method of capillary crystalline self-repairing concrete, which comprises the following steps: adding zeolite powder into a urease solution for dipping treatment to obtain pretreated zeolite powder; adding the pretreated zeolite powder into a mixed solution A containing urea and sodium alginate, adding a calcium chloride solution A, and separating a solid phase to obtain coated zeolite powder; fumed silica is added into a magnesium chloride solution to be mixed, polyethylene glycol is added, ultrasonic dispersion is conducted, and dispersion liquid is obtained; mixing the coated zeolite powder with the dispersion liquid, adding a sodium alginate solution, mixing, adding a calcium chloride solution B, and separating a solid phase to obtain modified zeolite powder; mixing preparation raw materials including the modified zeolite powder, the cement, the fly ash, the polycarboxylic acid water reducing agent and the aggregate to obtain the concrete. The concrete prepared through the method is good in crack self-repairing effect and good in mechanical strength, and the durability and the service life of the concrete can be improved easily.

The invention belongs to the technical field of synthesis of magnesium hydroxide flame retardants, and provides a synthesis method and flame-retardant application of hexagonal flaky magnesium hydroxide, and the synthesis method comprises the following steps: step 1, dissolving a mineralizer, a crystal form control agent and magnesium chloride in water in proportion; step 2, putting a certain amount of the mixed solution into a high-pressure reaction kettle for hydrothermal reaction; step 3, after the reaction is finished, taking out the cooled solution from the high-pressure reaction kettle, and filtering and separating out a white product; 4, drying the sample, and grinding to obtain pure magnesium hydroxide powder; through reasonable process design and optimization, the prepared magnesium hydroxide not only has regular morphology and better dispersity, but also has excellent performance in the field of flame retardance of high polymer materials, meets the requirement of environmental protection, has the production advantages of low cost and high efficiency, and is suitable for industrial production. The method not only can effectively improve the overall utilization rate of salt lake resources, but also has remarkable economic and application values, and has wide industrial application prospects.

The invention relates to a design method for the mix proportion of carbonized 3D printing concrete and the carbonized 3D printing concrete. Carbon dioxide is introduced into cement-based printing slurry, the introduction amount of the carbon dioxide is controlled, and when the carbon dioxide is introduced into the cement-based printing slurry, the use amount of magnesium chloride is calculated according to the content of a carbonization reaction product CaCO3 and the proportion of calcite to aragonite in a required concrete mixture. Magnesium chloride and carbon dioxide are added into the cement-based printing slurry at the same time for full reaction, and finally the 3D printing concrete material is prepared. By adding magnesium chloride and generating aragonite type calcium carbonate, the thixotropic behavior of the material is improved, the constructability of the cement slurry is higher, the orientation of the nano-scale aragonite fibers is arranged according to the printing direction, the reinforcing and toughening effects are excellent, and the bending resistance, bending resistance and compressive strength are all improved.

The invention discloses a multi-dimensional rapid evaluation method for snow-melting agent corrosion resistance of stainless steel, and relates to the technical field of stainless steel performance evaluation.The multi-dimensional rapid evaluation method comprises the steps that sodium chloride, calcium chloride and magnesium chloride are weighed by mass and dissolved in deionized water, acetic acid and sodium hydrogen sulfite are added after dissolution, and the pH value is adjusted to 4-6; performing potentiodynamic polarization scanning and electrochemical impedance spectroscopy testing on the stainless steel sample to obtain pitting potential and impedance modulus; the method comprises the following steps: placing a stainless steel sample in a cyclic corrosion experiment box, carrying out a corrosion experiment under the conditions of controlling the cyclic temperature change of an environment temperature and periodically carrying out cyclic switching of a spraying mode, a humid mode and a drying mode, taking out the sample every set time, and measuring the corrosion rate and the maximum pitting depth; and according to the pitting potential, the impedance modulus, the corrosion rate and the maximum pitting depth, carrying out graded judgment on the corrosion resistance of the stainless steel. According to the method, the corrosion resistance of the stainless steel can be accurately evaluated in a short time.

The invention relates to the technical field of agriculture, in particular to a plant nutrient solution for saline-alkali soil improvement and a preparation method thereof. The invention relates to a preparation method of a plant nutrient solution for improving saline-alkali soil. The preparation method comprises the following steps: preparing NO3-intercalated layered double hydroxides and acid modified calcium-based montmorillonite; preparing humic acid chelated calcium magnesium powder; preparing a binary compound; and preparing the plant nutrient solution. The preparation method comprises the following steps: preparing NO3-intercalated layered double hydroxides from calcium nitrate tetrahydrate and aluminum nitrate nonahydrate, carrying out acid modification on calcium-based montmorillonite by using dilute sulphuric acid, purifying humic acid, and mixing with calcium chloride and magnesium chloride hexahydrate to prepare humic acid chelated calcium magnesium powder. Finally, the three components are added into pig excrement fermentation liquor to prepare a plant nutrient solution, an adsorption-replacement-leaching closed loop can be formed, the desalination and alkali reduction efficiency is remarkably improved, the soil structure is improved, the effect of synergistically improving the saline-alkali soil is achieved, and therefore plant growth is promoted.

The invention provides a uniaxially stretched polyethylene composite film material as well as a preparation method and application thereof, and belongs to the technical field of film materials. According to the invention, through ultrasonic stripping, 3-aminopropyltriethoxysilane modification and N, N-dimethyl octadecyl ammonium chloride intercalation, the dispersibility and interfacial compatibility of montmorillonite are improved, and zinc oxide is introduced to endow antibacterial and ultraviolet shielding functions; maleic anhydride grafting enhances the interface bonding force; in metallocene polyethylene modification, through synergistic grafting of maleic anhydride and glycidyl methacrylate, a polar group is introduced, so that the compatibility of the metallocene polyethylene and a polar nano material is improved, and the flexibility and the processability are improved; magnesium chloride promotes grafting efficiency, and tributyl phosphate improves dispersibility and fluidity. The barrier property, the mechanical property and the processability of the composite material are enhanced through the synergistic effect, and the application requirement of a high-performance film is met.

The invention relates to the technical field of floating cables, and provides a waterproof corrosion-resistant floating cable which comprises a conductor, an insulating layer, a foaming layer and a sheath layer from inside to outside. The sheath layer comprises the following raw material components in parts by mass: 90-110 parts of a styrene-butadiene-styrene block copolymer, 60-80 parts of polypropylene, 80-90 parts of white oil, 15-25 parts of a filler, 2-3 parts of an antioxidant, 1-2 parts of a compatilizer and 1-3 parts of a dispersant; the filling agent is composite calcium carbonate; the preparation method of the composite calcium carbonate comprises the following steps: A1, adding calcium carbonate into an alkaline solution, and uniformly mixing to obtain a mixed solution; a2, adding magnesium chloride and aluminum chloride into water, and mixing to obtain a metal salt mixed solution; and A3, adding the metal salt mixed solution into the mixed solution, stirring, centrifuging, washing and drying to obtain the composite calcium carbonate. According to the technical scheme, the problem of poor acid corrosion resistance of the waterproof floating cable in the prior art is solved.

The invention discloses a preparation method of basic magnesium chloride, which comprises the following steps: dissolving magnesium chloride in water, heating to 50-95 DEG C, and stirring for 1-2 hours to obtain a colorless and transparent first solution; magnesium oxide is added into the first solution, alkali is added to adjust the pH to be 8-10, heat preservation is conducted, stirring continues for 1-4 h, and a second solution is obtained; pulping the second solution into a crystallization kettle, crystallizing, centrifuging, washing, drying a filter cake at 80-105 DEG C to obtain a white product basic magnesium chloride, and circulating mother liquor water for the synthesis reaction. The synthesis process provided by the invention is simple, high in product yield and yield and suitable for mass production, a common chemical synthesis kettle can meet production requirements, high-temperature and high-pressure procedures are avoided, and the production cost is reduced. The method is low in energy consumption, high in safety, free of wastewater and sewage discharge, green and environment-friendly.

The invention provides an efficient environment-friendly petroleum passivator as well as a preparation method and application thereof, and belongs to the technical field of passivators. The preparation method comprises the following steps: reacting bismuth nitrate with tetra (4-carboxyl phenyl) porphyrin and benzoic acid to prepare a carboxyl phenyl porphyrin bismuth-MOF material, reacting antimony nitrate with tetra (4-pyridyl) porphyrin and benzoic acid to prepare a pyridyl porphyrin antimony-MOF material, and performing sol-gel reaction on lanthanum isopropoxide and cerium isopropoxide to prepare lanthanum-cerium sol; the preparation method comprises the following steps: mixing calcium nitrate, magnesium chloride, organic acid, organic amine and hydrogen peroxide for reaction to prepare a calcium / magnesium organic matter, mixing the calcium / magnesium organic matter with other substances, adding the mixture into an acetonitrile / ethanol mixed solvent, and uniformly stirring and mixing to prepare the efficient environment-friendly petroleum passivator. The high-efficiency environment-friendly petroleum passivator prepared by the invention is green, safe, non-toxic and efficient, has better capturing and passivating effects on metal ions such as nickel and vanadium in the catalytic cracking reaction process of heavy oil, improves the activity of a catalyst, prolongs the service life of the catalyst, and thus, has a wide application prospect.

The invention discloses sodium titanate with a layered crystal structure, a preparation method of the sodium titanate and application of the sodium titanate in a water-based magnesium ion battery, and belongs to the technical field of water-based magnesium ion batteries. According to the invention, the sodium titanate with a layered crystal structure is used as the negative electrode material of the aqueous magnesium ion battery, and due to excellent chemical and structural stability, the sodium titanate can realize reversible Mg < 2 + > intercalation / deintercalation in an aqueous magnesium electrolyte. According to the invention, Na2Ti2O5 and Na2Ti3O7 materials are synthesized by a hydrothermal method and a high-temperature annealing process. In a magnesium chloride electrolyte, the two sodium titanate materials both show extremely low charge and discharge potentials (Na2Ti2O5,-1.3 to-0.6 V vs.SCE; sCE (-1.5 to-1 V vs.SCE) and relatively good cycling stability are achieved. In addition, the charge-discharge specific capacity of the Na2Ti2O5 half cell under the current density of 2A / g is up to 213mAh / g, and the high specific capacity of 150mAh / g is still kept under the high current density of 10A / g. The sodium titanate is an ideal aqueous magnesium battery negative electrode material, has the advantages of low cost and environmental friendliness, and has a great application prospect in the field of aqueous magnesium ion energy storage.

The invention provides anhydrous magnesium chloride and a preparation method thereof, and the preparation method comprises the following steps: mixing MgCl2. NH2O and ammonium chloride, carrying out ball milling, tabletting and granulating the mixed material, and heating and sintering the obtained flaky particles to obtain the anhydrous magnesium chloride, wherein n is an integer, and 0 < n < = 6. The water-containing magnesium chloride and the ammonium chloride can form an alternately coated sandwich structure through the pretreatment modes of ball milling and tabletting granulation, so that hydrogen chloride gas and ammonia gas generated during heating decomposition are diffused from the inside of the flaky particles to the outside, and meanwhile, the water-containing magnesium chloride in the particles can be fully exposed in a hydrogen chloride atmosphere; mgO generated in the sintering process is reduced; according to the tabletting and granulating method, large pores can exist among the flaky particles, generated water molecules can be taken away from a heating system from the pores existing among the flaky particles along with gas circulation in the heating and sintering process, and dehydration is better achieved. Meanwhile, the method is more beneficial to model selection of dehydration equipment.

The invention discloses a novel composite fog dispersal catalyst formula and a preparation method thereof, and belongs to the field of manual intervention weather catalyst manufacturing. The catalyst comprises a hygroscopic agent, which can be calcium chloride, magnesium chloride, sodium chloride, urea, calcium hydroxide or magnesium hydroxide; the carrier agent can be oxidized starch, bentonite, diatomite, a molecular sieve or cellulose; and the dispersing agent can be silicon dioxide, fatty alcohol-polyoxyethylene ether, polyethylene glycol, fatty glyceride or titanium dioxide. The prepared catalyst has good hygroscopicity and dispersibility, and when the catalyst is sown in dense fog, the dense fog can be rapidly dissipated. The raw materials have high water absorption characteristic and dispersity and can accelerate dissipation of warm dense fog and improve visibility, most of the carrier materials are non-toxic and harmless environment-friendly materials, the content of chloride ions and alkali metal ions in the composite catalyst is effectively reduced by controlling the proportion, the corrosion effect caused by various ions is reduced, and the requirement for environmental protection is met.

The invention provides a method for synthesizing high-valued amorphous calcium carbonate through carbon sequestration of carbide slag, and belongs to the technical field of carbon sequestration and high-valued utilization of industrial solid waste resources. The method comprises the following steps: carrying out active calcium extraction reaction on a dried and ball-milled carbide slag aqueous solution through ammonium chloride, stirring and filtering to obtain a calcium-containing solution; the method comprises the following steps: adding a certain amount of absolute ethyl alcohol and magnesium chloride into a calcium-containing solution, fully stirring, adjusting the pH value to a certain value, and introducing CO2 gas for mineralization reaction to obtain a turbid liquid containing calcium carbonate precipitate; and carrying out centrifugal separation, alcohol washing and drying on the turbid liquid to obtain powder calcium carbonate. According to the method disclosed by the invention, the calcium carbide slag active calcium liquid is extracted by adopting ammonium chloride, and absolute ethyl alcohol-magnesium chloride is added to precisely regulate and control the reaction steps of CO2 and the extracted calcium liquid, so that the CO2 is efficiently fixed, and meanwhile, mineralization is performed to obtain a mixed crystal type amorphous nano calcium carbonate product. According to the technology, double targets of synthesizing high-valued calcium carbonate through carbide slag carbon sequestration are achieved, and an innovative technical path is invented for current solid waste resource utilization.

The invention discloses a soil conditioner and a preparation method thereof, and relates to the field of soil conditioners, in particular to a soil conditioner and a preparation method thereof. The preparation method of the soda saline-alkali soil improver comprises the following steps: 1, taking fulvic acid, anhydrous calcium chloride, anhydrous magnesium chloride and anhydrous aluminum chloride for later use; 2, dissolving fulvic acid in a deionized water solution to prepare a fulvic acid solution, and then adding anhydrous calcium chloride, magnesium chloride and aluminum chloride into the fulvic acid solution; 3, uniformly stirring and mixing; 4, transferring the stirred mixed solution into a hydrothermal reaction kettle, and heating; 5, after the hydrothermal reaction is finished, cooling to room temperature, carrying out suction filtration, and drying filter residues at low temperature; and 6, grinding the dried filter residues to obtain the soda saline-alkali soil improver. The soda saline-alkali soil improver is an acidic Ca, Mg and Al hydrotalcite intercalation material; an anhydrous calcium sulfate phase and a compound (H3O) Al3 (SO4) 2 (OH) 6 phase containing aluminum and sulfate radicals are mainly used; the pH of the soda saline-alkali soil can be improved more quickly.

The invention belongs to the technical field of chemical synthesis, and particularly relates to a preparation method of perfluorohexyl octane. The preparation method comprises the following steps: by taking perfluorohexyl ethyl iodide as a raw material, firstly carrying out Grignard reagent exchange with a reagent A, and then carrying out nucleophilic addition reaction with n-hexanal to obtain a compound III; carrying out esterification and substitution on the compound III to prepare a compound V, or carrying out an Apple substitution reaction to prepare the compound V; and carrying out reduction reaction on the compound V, rectifying and purifying to obtain a target product. The reagent A comprises an isopropyl magnesium chloride tetrahydrofuran solution, a methyl magnesium chloride tetrahydrofuran solution, a methyl magnesium bromide tetrahydrofuran solution, an ethyl magnesium chloride tetrahydrofuran solution, an ethyl magnesium bromide tetrahydrofuran solution and / or a phenyl magnesium bromide tetrahydrofuran solution. According to the method, the perfluorohexyl ethyl iodide and the n-hexanal are used as raw materials to prepare the perfluorohexyl octane, isomer impurities are fundamentally avoided, and the method has the advantages that purification is easy, the yield is high, the product purity is high, and industrial production is facilitated.

The invention discloses a high-bonding-strength magnesium adhesive as well as a preparation method and application thereof. The high-bonding-strength magnesium adhesive comprises the following components: 160-185 parts of light calcined magnesia, 40-54 parts of magnesium chloride, 36-46 parts of magnesium sulfate, 46-60 parts of water, 6-14 parts of soybean protein powder, 1-3 parts of a retarder, 2-6 parts of talcum powder, 3-5 parts of polyvinyl alcohol and 4-8 parts of a waterproof agent. The waterproof agent comprises sodium methylsilanolate and sodium silicate in a mass ratio of (2-5): 1. The soybean protein is used as the modifier and can be extracted with the magnesium adhesive to form a network interpenetrating structure, so that the number of structural voids and the flatness of the magnesium adhesive are improved, a flat and compact gel system is formed, and the bonding performance of the magnesium adhesive is effectively improved.

The invention provides a biological carbonized magnesium chloride cement residue soil brick and a preparation method thereof, and belongs to the technical field of building materials. The biological carbonized magnesium chloride cement muck brick is prepared from the following raw materials in parts by weight: 3 to 7 parts of muck, 0.6 to 3 parts of magnesium oxide, 0.02 to 0.1 part of magnesium chloride, 0.013 to 0.015 part of a retarder, 0.9 to 1.5 parts of a bacterial solution and 0.5 to 1.5 parts of a urea solution, the bacterial liquid comprises bacillus pasteurii. According to the invention, the muck is used as a main raw material, so that resource utilization of building wastes is realized; through the mutual cooperation of magnesium oxide, magnesium chloride, bacillus pasteurii and urea components and the synergistic effect of microbial mineralization (bio-carbonate) and magnesium chloride cement hydration (chemical gel), the limitation of a single curing technology on strength is broken through, and the compactness and compressive strength of the muck brick are improved.

The invention relates to the technical field of metallurgy, and provides a method and system for preparing a spongy TC4 alloy raw material, and the method comprises the following steps: heating and mechanically stirring titanium tetrachloride, aluminum trichloride and vanadium tetrachloride according to a component proportion required for preparing a TC4 alloy to form a uniform chloride mixture; the chloride mixture is subjected to a reduction distillation reaction in the presence of magnesium, and inert gas is continuously introduced in the reaction process for stirring; and after the reaction is completed, separating the byproduct magnesium chloride to obtain the spongy TC4 alloy raw material. According to the scheme, use of high-cost metal raw materials is avoided from the source, meanwhile, the complex steps of electrode preparation and repeated smelting are omitted through the one-step reduction distillation reaction, and energy consumption and time cost are greatly reduced.

The invention discloses a method for preparing calcium hydroxide with a high specific surface area by digesting calcium oxide, and relates to the technical field of preparation of calcium hydroxide with a high specific surface area. The method is characterized in that diethylene glycol / triethanolamine / magnesium chloride is adopted as a compound digestion aid through two processes of wet digestion and dry digestion; and calcium hydroxide with high specific surface area can be controllably prepared. The specific surface area of the calcium hydroxide prepared through wet digestion can reach 70 m < 2 >. G <-1 > or above, the specific surface area of the calcium hydroxide prepared through dry digestion is 45 m < 2 >. G <-1 > or above, the reaction activity of the calcium hydroxide is effectively improved, and the novel controllable method for preparing the calcium hydroxide with the high specific surface area is provided.

The invention relates to a liquid detergent composition comprising a first surfactant selected from fatty alcohol ether sulfates, a second surfactant selected from betaines, optionally at least one solvent selected from ethanol, propanol, isopropanol, ethylene glycol, butyl glycol, propylene glycol, polypropylene glycol, alcoholamine, monoethanolamine, glycerol and mixtures thereof, wherein the salt concentration in the composition is about 0.2 to about 10 wt.-% and wherein the salt is selected from the group consisting of sodium salts such as sodium chloride, sodium sulfate, sodium formate, sodium acetate or sodium propionate, potassium salts such as potassium chloride, potassium sulfate, potassium formate, potassium acetate or potassium propionate, magnesium salts such as magnesium chloride, magnesium sulfate, magnesium formate, magnesium acetate or magnesium propionate, and calcium salts such as calcium chloride, calcium sulfate, calcium formate, calcium acetate or calcium propionate, and mixtures thereof, and wherein the composition is a concentrate that can be diluted with water while maintaining or increasing the viscosity.The present invention further relates to the use of such a cleaning composition for cleaning hard surfaces, in particular dishes, and to a process for preparing a cleaning composition, the process comprising diluting the concentrated liquid cleaning composition with water.

The invention relates to the technical field of biological materials, in particular to a PDRN porous microsphere as well as a preparation method and application thereof. The PDRN porous microspheres are prepared from the following raw materials: PDRN, an oil phase matrix, a curing agent and metal salt, the curing agent is at least one of polyethylene glycol acrylate and polylysine; the metal salt is at least one of calcium chloride, zinc chloride, magnesium chloride and ferric chloride. The PDRN porous microsphere has the advantages of being controllable in size, excellent in disintegration resistance and excellent in swelling resistance, is high in moist heat sterilization tolerance and strength, can be used as a filling material for medical beauty or an ideal candidate material of a tissue engineering scaffold, and has potential application value.

The invention discloses a controllable low-temperature composite phase change material of binary inorganic hydrated salt based on sodium sulfate decahydrate and a preparation method of the controllable low-temperature composite phase change material, and relates to the technical field of cold storage. According to the material, sodium sulfate decahydrate is used as a main phase change material, magnesium chloride hexahydrate, zinc nitrate hexahydrate and the like are combined as binary inorganic hydrated salt phase change materials, and a nucleating agent, a thickening agent, a cooling agent and a supporting material are added. The invention has obvious innovation. In a material system, sodium sulfate decahydrate is used as a main body and matched with binary inorganic hydrated salt, the phase change temperature is regulated and controlled in an accurate proportion, and the problems of phase separation and supercooling are solved. The preparation method comprises the following steps: mixing the inorganic hydrated salt with the additive, grinding, magnetically stirring, heating and carrying out vacuum adsorption to prepare the composite phase change material, and blending to obtain the composite material with the required temperature, the composite material is safe and stable, has good thermal conductivity and high phase change latent heat, can accurately control the temperature, meets the requirements of the fields of food, fresh food, medicine, chemical industry and the like in cold-chain transportation, and has wide application prospects. And the transportation efficiency and the product quality are obviously improved.

The invention belongs to the field of catalyst preparation, and particularly relates to a binder for catalyst forming and a preparation method and application thereof. The binder for forming the catalyst, provided by the invention, is prepared from the following raw materials in parts by weight: 0.5 to 2 parts of magnesium chloride, 1 to 2 parts of magnesium oxide, 0.5 to 2 parts of sodium carboxymethyl cellulose, 1 to 3 parts of ethylenediamine tetraacetic acid, 2 to 6 parts of nano-hydroxyapatite modified polyester, 1 to 3 parts of organic solvent and 10 to 35 parts of water. When the binder provided by the invention is applied to catalyst forming, on one hand, the problems that a conventional catalyst is poor in binding performance, and acid gas corrodes equipment and pollutes the environment in the roasting process can be solved; on the other hand, the surface acidity of the catalyst carrier can be reduced, a suitable reaction environment can be provided for some reactions needing to be carried out in an alkaline environment or reactions with acidic reactants and intermediates, and the selectivity and conversion rate of the reactions are improved.

The invention relates to a preparation method and application of metal-doped calcium manganese ore manganese dioxide. The method comprises the following steps: dissolving manganese salt in deionized water to prepare a solution; under stirring, dropwise adding an alkali solution into the obtained solution, after a solid is separated out, adding metal salt and magnesium sulfate, uniformly mixing, then slowly adding an oxidizing agent, and stirring to obtain a black precipitate; washing the black precipitate with water, soaking the black precipitate in a magnesium chloride solution, washing again, transferring the obtained solid and magnesium chloride into a high-pressure kettle with a polytetrafluoroethylene lining, heating, cooling, centrifuging, washing and drying the obtained precipitate to obtain metal-doped calcium manganese ore manganese dioxide; the original tunnel structure of the calcium manganese ore manganese dioxide cannot be changed by doping the ions such as Zn < 2 + >, Co < 2 + >, Ni < 2 + >, Al < 3 + >, Fe < 3 + > and Eu < 3 + > into the calcium manganese ore manganese dioxide, the doped metal active ions can be combined with the calcium manganese ore manganese dioxide, the electrochemical performance of the material in the water-based zinc ion battery can be effectively improved, and the material has important significance on research of the water-based zinc ion battery.

The invention discloses a low-value plant fiber material recombined fireproof door core and a preparation method thereof, and relates to the field of fireproof materials. Comprising a plurality of veneers which are laminated and compounded, inorganic flame-retardant adhesive layers are arranged between every two adjacent veneers and on the surface of the veneer located on the outer side, and each inorganic flame-retardant adhesive layer comprises trisodium phosphate, a magnesium chloride solution, starch glue, boric acid, magnesium oxide, silicon dioxide, tartaric acid and an emulsifier. According to the fireproof door core, the inorganic flame-retardant adhesive and the veneers are subjected to multi-layer cross compounding, the heat-insulating fireproof layers are formed between the boards, and the surface inorganic flame-retardant adhesive layers can effectively prevent flame from directly burning the fiber veneers, so that the fireproof door core reaches a relatively high fireproof grade, the door core has high impact resistance and deformation resistance, the fiber materials are low-carbon and environment-friendly, and the fireproof door core is suitable for being popularized and used. The material has the advantages of light density, excellent sound insulation and heat insulation effects, no emission of harmful substances or harmful gases in the manufacturing process, and conformity to national industrial policies.

The invention discloses a phosphogypsum efficient curing agent and a phosphogypsum harmless treatment method. The curing agent is composed of an exciting agent, a modifying agent and an adsorbent. The exciting agent comprises one or a combination of more of calcium oxide and calcium hydroxide; the modifier comprises one or a combination of more of magnesium oxide, manganese oxide, aluminum oxide, ferric oxide, lanthanum oxide, magnesium chloride, manganese chloride, aluminum chloride, ferric chloride, lanthanum chloride and the like; the adsorbent comprises one or a combination of more of calcium silicate, aluminum silicate, kaolinite, potassium feldspar, calcium metasilicate and the like. The curing agent provided by the invention can efficiently cure soluble phosphorus, fluorine and heavy metal ions in ardealite whether the curing agent and ardealite are mixed and stirred for reaction or a dump leaching process is adopted for treatment, and the curing rates of the soluble phosphorus, fluorine and heavy metal ions in the ardealite reach 99%, 95% and 99%.

A laundry additive composition comprising a plurality of perfume-containing particles, wherein each of said perfume-containing particles comprises: a perfume ingredient; polyethylene glycol; and an inorganic salt carrier which is selected from the group consisting of magnesium sulfate, magnesium chloride, and the combination thereof, wherein each of said perfume-containing particles has a mass of from 1 mg to 1 g and a maximum dimension of from 3 mm to 10 mm.

The invention relates to the technical field of curing agent preparation, in particular to a seawater-corrosion-resistant high-strength marine silt curing agent and a preparation method thereof.The curing agent is prepared from, by mass, 40-60 parts of a main body material, 10-15 parts of an activating agent, 2-8 parts of a coagulant and 2-5 parts of modified nano calcium carbonate; the main material is one of yellow phosphorus slag micro powder, magnesium smelting slag micro powder and blast furnace slag micro powder; the activating agent is one of phosphorus slag Portland cement, alkali-making white mud and papermaking lime slag; the coagulant is one of sodium chloride, magnesium chloride, potassium sulfate and magnesium sulfate. According to the prepared curing agent, the compactness of a cured sample can be improved, invasion of ions in seawater is reduced, nano calcium carbonate is coated with polydopamine, dispersion is uniform, and the subsequent hydration process is optimized.

The invention provides nano magnesium aluminate spinel with high sintering activity and high dispersity and a preparation method thereof, and belongs to the field of nano material preparation. The method comprises the following steps: mixing aluminum chloride, magnesium chloride and deionized water to obtain a mixed solution; adding aluminum bicarbonate into the mixed solution, and carrying out hydrothermal reaction, so that aluminum hydroxide and magnesium hydroxide are precipitated at the same time to obtain a magnesium aluminate spinel precursor; the magnesium aluminate spinel precursor is subjected to first-stage roasting, so that the magnesium aluminate spinel precursor is subjected to flash pyrolysis to form a fine crystal nucleus, and a pyrolysis product is obtained; and performing second-stage roasting on the pyrolysis product to control the crystal nucleus of the pyrolysis product to grow along a specific crystal face, thereby obtaining the nano magnesium aluminate spinel powder. A nanoscale precursor is precisely regulated and controlled to be controllably and orderly separated out through a wet-process system micro-area reaction; the crystal form development, the microstructure and the size uniformity of the powder are controlled through a flash pyrolysis nucleation-crystal face oriented growth two-stage roasting technology.