28 results about "Strontium chloride" patented technology

This invention discloses a product pretreatment auxiliary device based on strontium chloride refrigerant, comprising: a preparation tank with a collection tray sealed at its bottom; a grinding sieve casing, which is conical in shape and is fixedly connected to the preparation tank, dividing the tank cavity into an upper processing chamber and a lower collection chamber; a pushing and stirring assembly, which is rotatably mounted on the top of the preparation tank and pressed against the outer surface of the grinding sieve casing, and is driven to rotate by a first transmission assembly, wherein the pushing and stirring assembly has a rotating shaft inside, which is driven by a second transmission assembly, and a scraping assembly is mounted at the bottom of the rotating shaft and pressed against the inner surface of the grinding sieve casing; and a first heating assembly, which extends through the rotating shaft into the scraping assembly.

The invention relates to an ethylene glycol regulated rare earth europium doped Sr2LaF7 nano material as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, dissolving strontium chloride, lanthanum nitrate and europium nitrate in water to form a uniform solution; then adding ethylene glycol accounting for 20-70% of the volume of the deionized water, and regulating crystal growth by utilizing coordination of the ethylene glycol and metal ions; adding an ammonium fluoride or sodium fluoride solution, adjusting the pH value, and carrying out a hydrothermal reaction at 100-180 DEG C for 4-12 h; and finally, centrifuging, washing and drying to obtain a final product. Compared with the prior art, the morphology-controllable preparation of the Sr2LaF7 nano material is realized through directional regulation and control of ethylene glycol and a simple hydrothermal method, and the product has the advantages of high luminous intensity, uniform morphology and the like, and has an application prospect in the fields of fluorescence labeling and the like; the method is simple in process and low in cost.

The application discloses a kind of multistage filtering devices for strontium chloride purification, comprising: base, left side fixed with support on it, right side circumferentially arranged with support seat;Filter cartridge, installed on the support;Ring seat, configured as two groups, respectively fixedly sleeved in the middle and upper part of the support seat;Purification cylinder, fixed on the ring seat, and its inside is equipped with purification mechanism;Cover, set at the top end position of the purification cylinder, and connected with the purification mechanism;And connecting pipe, communicated between the filter cartridge and the purification cylinder, and the interface between the purification cylinder is telescopic structure.

The invention provides a method for solidifying radioactive nuclear waste, and the method comprises the following steps: S1, uniformly mixing radioactive waste and dihydric phosphate to obtain a solid mixture, and then adding water into the solid mixture to obtain a raw material mixture, the radioactive waste comprising strontium chloride; s2, the raw material mixture is subjected to a supercritical hydrothermal reaction, a ceramic solidified body is obtained, and the supercritical hydrothermal reaction conditions include that the reaction temperature ranges from 390 DEG C to 400 DEG C, the pressure in a kettle ranges from 25 MPa to 27 MPa, the heat preservation time ranges from 9 min to 11 min, and the stirring rotating speed ranges from 400 rpm to 600 rpm. The method is easy to operate, good in curing effect and low in radionuclide leaching rate.

The invention relates to the technical field of metal halide luminescent materials, and discloses a preparation method of a cesium-lead-bromine-chlorine blue-light quantum dot colloid and a preparation method of a blue-light film. The method comprises the following steps: dissolving cesium bromide and lead bromide in N, N-dimethylformamide, adding oleic acid and oleylamine to form a precursor solution, and injecting the precursor solution into a toluene anti-solvent to prepare CsPbBr3 quantum dot colloid; and then dropwise adding a toluene saturated solution of alkaline earth metal chloride (calcium chloride, strontium chloride, barium chloride or magnesium chloride) for post-treatment to realize ion exchange of Cl <-> and Br <-> and synergistic defect passivation, so that the emission peak is continuously adjustable in the range of 450-500 nm, the half-peak width is less than 30 nm, and the photoluminescence quantum yield is greater than 60%. And further mixing the quantum dot colloid with a polymethyl methacrylate toluene solution and forming a film to obtain a stable blue light quantum dot film which can be used for a backlight source or a display device.

The application belongs to the technical field of material science and engineering, and discloses a preparation method of manganese and bismuth co-doped barium strontium titanate ceramic material with high dielectric property. The application adopts a liquid phase method to react titanium tetrachloride, barium chloride, strontium chloride, oxalic acid, manganese oxide and bismuth oxide to obtain uniform barium strontium titanate powder. Co-doping is selected in the aspect of doping, and the manganese and bismuth co-doped barium strontium titanate is the first case. The preparation method highlights that the particle size of the prepared barium strontium titanate powder is smaller and uniform without agglomeration, and the barium strontium titanate powder has the characteristics of high dielectric constant and low dielectric loss.

The application discloses a kind of polystrontium aspartate / potassium and its preparation method and application, belong to daily chemical technical field.The polystrontium aspartate / potassium using poly succinimide can be prepared in the aqueous solution of strontium hydroxide and potassium hydroxide hydrolysis.The preparation process has the characteristics of mild conditions, simple process, low cost, high efficiency and environmental protection.The polystrontium aspartate / potassium provided by the application is used for whitening and anti-allergic toothpaste, has the dual effect of moisturizing and whitening and anti-allergic, compared with adding poly sodium aspartate and potassium chloride, strontium chloride respectively, the use of polystrontium aspartate / potassium eliminates a large number of sodium ions and chloride ions, effectively reduces the ion concentration in formula, reduces formula difficulty.

The utility model discloses anhydrous strontium chloride discharging equipment, including the feed frame, the inner wall fixedly connected with filter screen of feed frame, the upper side of filter screen is equipped with the plugging mouth, the inner wall fixedly connected with baffle of plugging mouth, the lower side fixedly connected with drive motor of feed frame. The utility model discloses, be provided with drive motor, cleaning frame, can realize the rotation of cleaning frame with the help of drive motor, and cleaning frame can scrape the outside of filter screen and carry out the operation of removing, in the process of rotating, through the cooperation of stressed member, annular groove, trapezoidal ring groove and sealing block etc. parts, can automatically realize the opening and sealing of one side of cleaning frame, complete the efficient cleaning of impurity, and the inside of cleaning frame, linkage mouth and feed frame form the separation state between, make the time of cleaning impurity and normal processing time can coincide, the length of time of equipment shutdown because of cleaning is greatly shortened, effectively promoted the overall production efficiency.

The utility model relates to the field of magnetic material equipment, and discloses a device for concentrating and recovering strontium chloride in waste water, which comprises a heat exchange kiln, which comprises a kiln body which is transversely arranged and can rotate, a feed port and a discharge port are respectively arranged at two ends of the kiln body, a spiral guide plate is arranged inside the kiln body, and a sectional type water cooling component is wound outside the kiln body; two interfaces of the steam generator are respectively communicated with the water inlet and the water outlet of the sectional type water cooling component; the triple heat exchange concentration device is communicated with the steam generator. According to the device, the strontium chloride in the bonded permanent magnetic ferrite production wastewater can be concentrated and recovered, and the obtained strontium chloride recovery solution can be repeatedly used for preparing the bonded permanent magnetic ferrite, so that the utilization rate of strontium resources can be remarkably improved, the waste of the strontium resources is effectively reduced, and the cost is greatly reduced. On the basis, steam used for concentrating and recycling strontium chloride also comes from the production process of the bonded permanent magnetic ferrite, and full utilization of heat energy can be realized.

The invention discloses a method for determining lithium in a lithium ore bioleaching solution, and belongs to the technical field of biological metallurgy, the determination method comprises the following steps: preparing a lanthanum nitrate-strontium chloride composite matrix improver, sampling from the lithium ore bioleaching system leaching solution, centrifuging to remove solid impurities, filtering the solid impurities by using a 0.22 [mu] m filter membrane, and collecting the lithium in the lithium ore bioleaching system leaching solution; a sample is diluted for standby application, a lanthanum nitrate-strontium chloride composite matrix improver is added into the sample, the concentration ratio of lanthanum nitrate to strontium chloride in the lanthanum nitrate-strontium chloride composite matrix improver is 1: 2, and the sample is measured by adopting a flame atomic absorption spectrophotometer. The method is especially suitable for bioleaching solution analysis of lithium ore and efficient detection of lithium resources, the inhibition effect of coexisting ions on lithium atomization is avoided through the lanthanum nitrate-strontium chloride composite matrix improver, and the coexisting interfering ions are competitively complexed, background absorption is reduced, and a lithium signal is prevented from being covered, so that the determination accuracy is improved.

The invention discloses a calculation design method of a Na-doped SrCl2-based solid electrolyte, and mainly solves the problem of low chloride ion conductivity of a strontium chloride (SrCl2)-based chloride ion solid electrolyte material under the condition of room temperature (300K) at present. According to the method, firstly, a Na-doped SrCl2 compound (Na < x > Sr < 1-x > Cl2-x) is subjected to structure optimization and screening by adopting a first principle method, the formation of the Na-doped SrCl2 compound is calculated, the optimal growth conditions of the Na-doped SrCl2 compound are found, and x is 0.03125, 0.0625, 0.09375, 0.125 and 0.15625 respectively; on the basis, the chloride ion conductivity of Na < x > Sr < 1-x > Cl < 2-x > is calculated by adopting a de novo molecular dynamics method, and the calculation result shows that Na < 0.0625 > Sr < 0.937 > Cl < 1.9375 > has the highest chloride ion conductivity at the temperature of 300 K, and the value of the highest chloride ion conductivity is 3.32 * 10 <-3 > S.cm <-1 >. In addition, Na < 0.0625 > Sr < 0.937 > Cl < 1.9375 > has good electronic insulativity, a relatively wide electrochemical stability window and good mechanical properties. The invention provides a new thought and method for researching and developing the chloride ion battery solid electrolyte with high chloride ion conductivity.

The invention relates to a method for manufacturing a glass article. Provided is a method for manufacturing a glass article capable of reducing the energy required for manufacturing the glass article. A method for producing a glass article, which is a method for producing molten glass using a glass raw material, and which comprises: heating and melting the glass raw material in a furnace to produce the molten glass; the method is characterized in that a dehydrated raw material is obtained by dehydrating a water-containing raw material under at least one of the following condition 1 and the following condition 2 using at least one of waste heat generated in a melting furnace and waste heat generated in a molding unit connected to the melting furnace and molding the molten glass, and the dehydrated raw material is added to the glass raw material. Condition 1: the water-containing raw material is boric acid, and the temperature of the water-containing raw material during dehydration is 170 DEG C or less. Condition 2: The water-containing raw material is one or more chloride raw materials selected from the group consisting of strontium chloride, calcium chloride, and magnesium chloride, and the temperature of the water-containing raw material during dehydration is 250 DEG C or less.

The invention discloses a multi-stage fractional crystallization device for preparing 3N electronic-grade strontium chloride, which comprises a dissolving tank, the outer wall of which is vertically connected with a liquid supply pipe; the filtering tank is arranged on one side of the dissolving tank, a liquid outlet is formed in the lower end of the dissolving tank, and the liquid outlet is communicated with the filtering tank through an infusion pump; the frame is fixed outside the filtering tank; the first-stage crystallizer and the second-stage crystallizer are vertically assembled on the frame; the discharge pipe is vertically connected below the first-stage crystallizer and the second-stage crystallizer; the solid-liquid separation device is fixed on one side, close to the secondary crystallizer, of the frame; the material guide pipe is horizontally connected below the solid-liquid separation device; according to the multi-stage fractional crystallization device, impurities are separated through step-by-step crystallization by utilizing solubility difference at different temperatures, and strontium chloride is purified.

The invention discloses a carbon-supported platinum-based nanoparticle and a preparation method thereof, and belongs to the field of proton exchange membrane fuel cell cathode catalysts, the carbon-supported platinum-based nanoparticle comprises the following raw materials by weight: 0.4-2 parts of carbon powder, 0.1-2 parts of a complexing agent, 1 part of a platinum salt, 0.3-3 parts of a soluble transition metal salt, 0.1-0.5 part of a soluble alkaline earth metal salt, and 0.2-0.6 part of a precipitant, the soluble alkaline earth metal salt is at least one of beryllium chloride, magnesium chloride, calcium chloride, strontium chloride and barium chloride, the invention provides a'bidirectional dynamic range limiting 'method, on one hand, the problems that a traditional template method is complex in operation step, poor in range limiting effect and difficult to remove a subsequent template are solved; on the other hand, the current situation that nanoparticles synthesized by a traditional coprecipitation method are prone to agglomeration and uneven in particle size is improved, and a new thought is provided for preparation of platinum-based alloy.

The invention belongs to the technical field of myocardial repair hydrogel materials, and particularly relates to oxygen-producing hydrogel for myocardial repair and a preparation method of the oxygen-producing hydrogel. The preparation method comprises the following steps: carrying out a modification reaction on GelMA and KH570 in a PBS buffer solution to prepare KH570-GelMA, carrying out an oxidation reaction on cobalt chloride, strontium chloride, sodium hydroxide and sodium hypochlorite in an aqueous solution to prepare a CoOOH-Sr nanosheet, mixing the CoOOH-Sr nanosheet with the KH570-GelMA solution, introducing a photoinitiator, and carrying out in-situ curing to prepare the oxygen-producing hydrogel. Through modification of GelMA by KH570, regulation and control of crosslinking density, improvement of hydrogel porosity and introduction of CoOOH-Sr functional molecules, controllable oxygen production is realized, local hypoxia is relieved, cellular compatibility and biological activity of the hydrogel are improved, myocardial cell proliferation and tissue regeneration are promoted, and a hydrogel patch in an injection or patch form can be constructed to adapt to myocardial infarction model application.

This invention belongs to the technical field of hydrogel materials for myocardial repair, specifically relating to an oxygen-generating hydrogel for myocardial repair and its preparation method. The invention involves modifying GelMA with KH570 in PBS buffer to prepare KH570-GelMA, and oxidizing cobalt chloride, strontium chloride, sodium hydroxide, and sodium hypochlorite in aqueous solution to prepare CoOOH-Sr nanosheets. The CoOOH-Sr nanosheets are then mixed with the KH570-GelMA solution and a photoinitiator is introduced for in-situ curing to prepare the oxygen-generating hydrogel. By modifying GelMA with KH570, the crosslinking density is controlled, increasing the hydrogel porosity. The introduction of CoOOH-Sr functional molecules enables controlled oxygen production, alleviating local hypoxia, improving the cell compatibility and bioactivity of the hydrogel, promoting cardiomyocyte proliferation and tissue regeneration, and allowing for the construction of injectable or patch-like hydrogel patches suitable for myocardial infarction models.

This invention relates to the field of organic pigment preparation, and discloses a water-based ink pigment, Red 48:3, and its preparation process. The raw materials are 2B acid, 2,3-acid, strontium chloride, SOLSPERSE 27000, DISPERBYK-190, polyetheramine-crown ether compound, water-based acrylic resin emulsion, and silane coupling agent KH-560. The process includes: synthesizing the polyetheramine-crown ether compound and resin emulsion; preparing a diazo solution of 2B acid and coupling it with a sodium 2,3-acid solution; adding strontium chloride to the parent dye for lake formation; and after pulping the initial filter cake, sequentially adding a dispersant, a modifying compound, a resin emulsion, and a coupling agent for surface treatment. This invention achieves stable anchoring through the strong complexation of the crown ether ring with strontium ions on the pigment surface, and the resin coating enhances the dispersion stability and compatibility of the pigment in the aqueous medium. The finished product has strong color development and storage stability, making it suitable for high-end water-based inks.

The invention discloses a strontium chloride modified biochar adsorption material as well as a preparation method and application thereof, and belongs to the technical field of biochar materials. The preparation method comprises the following steps: modifying cellulose biomass by using a strontium salt solution, and pyrolyzing the modified cellulose biomass in inert gas to obtain the strontium chloride modified charcoal adsorption material. According to the invention, branches and leaves of pond fir biomass are respectively used as raw materials, strontium chloride is loaded on biochar of the pond fir biomass, high-temperature pyrolysis is utilized to obtain the material with the surface loaded with strontium chloride, and the pH value and the conductivity of the material are obviously improved; meanwhile, the obtained biochar adsorption material can realize efficient adsorption on phosphate ions in a mixed solution of phosphate, nitrate and ammonium salt with neutral pH, and is beneficial to effective treatment of phosphorus in actual water.

The application discloses a preparation method of a strontium-gentiopicroside complex, which comprises the following steps: (1) dissolving gentiopicroside and strontium chloride in ddH2O respectively to prepare a clear and transparent gentiopicroside solution A and a strontium chloride solution B, and the molar concentration ratio of the solution A to the solution B is 1:2-6; (2) under continuous stirring, the solution A is added to the solution B at a speed of 60-120 drops / min, and after the addition is completed, a mixed solution C is obtained; (3) 1 / 2-2 / 3 of the volume of anhydrous ethanol is added to the mixed solution C, the temperature is increased to 40-60 DEG C under the protection of argon and in the dark, and after sufficient mixing, a solution D is obtained; (4) the solution D is cooled to room temperature, the ethanol is removed by rotary evaporation at a temperature of no more than 40 DEG C, and a viscous liquid E is obtained; and (5) the viscous liquid E is freeze-dried, recrystallized by using methanol, and white powder is obtained, which is the strontium-gentiopicroside complex. The gentiopicroside complexed with strontium has obvious bone repair effect, and has better stability and bioavailability.

The utility model relates to the technical field of preparation of high-purity strontium chloride, in particular to a multi-stage filtering device for preparing high-purity strontium chloride. The utility model provides a multi-stage filtering device for preparing high-purity strontium chloride, which can effectively improve the mixing efficiency and effect of reaction liquid and ensure the purity and yield of the high-purity strontium chloride. A multi-stage filtering device for preparing high-purity strontium chloride comprises a base, a preparation barrel, a support and the like, the preparation barrel is connected to the upper side of the base, and the support is connected to the upper side of the middle of the preparation barrel. According to the utility model, 30% of hydrogen peroxide, hydrochloric acid and sulfuric acid are sequentially introduced into the liquid adding pipe, then flow into the stirring rod from the connecting sleeve and finally are discharged from the liquid adding port, and the motor is started to drive the stirring rod and the stirring blades to rotate to uniformly stir the solution while adding the liquid, so that the mixing efficiency and effect of the reaction liquid can be effectively improved, and the production cost is reduced. The purity and the yield of the high-purity strontium chloride are ensured.

The invention discloses automatic control conversion equipment for strontium salt purification, and relates to the technical field of strontium salt purification auxiliary equipment. A rotating motor is arranged in the center; the equipment cavity is fixed on the bearing base; the coaxial swinging device is fixed in the center of the top of the bearing base; the rotating shaft is rotationally arranged on the bearing base; the reciprocating outer shaft is fixed at the top of the coaxial swinging device and is coaxial with the rotating shaft; the dispersing and conveying device is arranged at the upper part of the equipment cavity and is fixedly connected with the top of the rotating shaft; the two swinging filtering devices are distributed up and down, are arranged in the middle of the equipment cavity and are fixedly connected with the reciprocating outer shaft; and the flow dividing and impurity removing device is fixed to the lower portion of the equipment cavity, and the reciprocating outer shaft is rotationally connected with the flow dividing and impurity removing device. According to the invention, the functions of dynamic anti-blocking filtration, self-adaptive split dosing and synchronous enhanced mixing are integrated, and efficient, stable and low-cost automatic operation of the strontium chloride purification process is realized.

The application provides a kind of adhesive ferrite magnetic powder for calendering and its preparation method and application, and relates to the technical field of ferrite material. Specifically, the preparation method comprises the following steps: mixing strontium carbonate, strontium chloride and iron red thoroughly, balling and obtaining material balls; dividing the material balls into first material balls and second material balls, and independently sintering and grinding the two, to obtain fine material balls with an average particle size of 0.2-0.4 microns and coarse material balls with an average particle size of 1.6-2.0 microns; mixing the fine material balls and coarse material balls in a mass ratio of 10-30:1, drying, then sequentially annealing and surface treating, and finally drying, crushing to obtain adhesive ferrite magnetic powder; the reagent for surface treatment comprises acetylene surfactant. The preparation method is simple and easy to operate, and the magnetic material prepared from the magnetic powder has very high remanence and intrinsic coercivity of the magnet, and has broad application prospects.

The application discloses a metal-doped mesoporous titanium dioxide composite material and a preparation method and application thereof. The material is prepared by the following steps: dropping a small amount of titanium chloride into ice to form a solution, stirring and adding a small amount of metal chloride (Cu, Fe), adding strontium chloride, dropping potassium hydroxide solution and stirring to obtain a slurry, placing the slurry into a high-temperature and high-pressure kettle, rapidly heating to 100-105 DEG C, heating for a period of time, washing the solution to neutral pH by centrifugation after cooling, and drying to obtain metal-doped strontium titanate. A small amount of metal-doped strontium titanate is taken into a high-pressure kettle, pure water and concentrated hydrochloric acid are added, the mixture is naturally cooled after high-temperature reaction for a period of time, the slurry after cooling is washed to neutral pH by a centrifugal machine, and the slurry is placed into a freeze dryer to be freeze-dried to obtain the mesoporous titanium dioxide composite material. The material can efficiently adsorb and remove pollutants (such as organic arsenic) in water, and realizes deep purification of water body organic pollutants.

This invention relates to the field of wastewater treatment and resource utilization technology, specifically to a method for treating produced water from high-calcium coalbed methane and recovering lithium and strontium resources. The method involves adding sodium sulfate, hydrogen peroxide, a demulsifier, and a flocculant to the produced water, allowing each to react. After the reaction, solid impurities are removed through solid-liquid separation. The effluent undergoes nanofiltration A treatment, with the nanofiltration A permeate and nanofiltration A concentrate treated separately. The treatment method for the nanofiltration A permeate is: electrolytic oxidation A, high-pressure reverse osmosis, and adsorption desorption. The treatment method for the nanofiltration A concentrate is: thermogravimetric precipitation, electrolytic oxidation B, resin adsorption, and nanofiltration B. The nanofiltration B permeate and nanofiltration B concentrate are then evaporated and crystallized to obtain NaCl and strontium chloride, respectively. The condensate is discharged or reused. This invention's treatment process achieves compliant discharge or reuse of produced water and separates byproducts such as calcium, strontium, and lithium from the water.

The invention discloses a strontium chloride production method based on oxidation coprecipitation and salting-out crystallization, and belongs to the technical field of inorganic chemical industry. The method comprises the following steps: performing acidolysis on a strontium carbonate raw material, adjusting the pH value by using carbide slag, and introducing a sulfur source; converting the sulfur source into strontium sulfate microcrystals with high adsorption activity in situ by controlling oxidation conditions, and deeply removing iron and organic impurities by utilizing a coprecipitation effect; evaporating and concentrating the filtrate, maintaining a high-concentration calcium chloride background environment to generate a strong salting-out effect, and inducing strontium chloride crystals to separate out under the synergistic effect of ultrasonic waves and auxiliaries; according to the method, waste residues are creatively utilized to realize treatment of impurities with waste, meanwhile, the one-way crystallization yield is remarkably improved by utilizing the salting-out effect, and the method has the advantages of low production cost, high product purity and stable and environment-friendly process.

This invention discloses a continuous crystallization apparatus for strontium chloride, comprising a flash crystallizer and a cooling crystallizer. The flash crystallizer contains a mixing tube, into which a strontium chloride solution from the evaporation and concentration process enters the mixing tube via a feed pipe, forming a mixture with the strontium chloride mother liquor in the mixing tube. The outlet of the flash crystallizer is connected to the cooling crystallizer via a pipette pump. A cooling water jacket is installed outside the cooling crystallizer, with an inlet at the bottom and an outlet at the top. A stirrer is installed inside the cooling crystallizer, and its bottom opening is connected to a discharge pump, which delivers the crystallized strontium chloride slurry to a subsequent centrifugal separation process. This achieves a continuous crystallization process for the evaporated and concentrated strontium chloride solution.

The application discloses a kind of strontium-containing calcium sulfate composite feed additive and preparation method thereof in the field of feed additive, and the preparation raw materials of the composite feed additive include the following components by weight: strontium calcium sulfate 5-10 parts, carboxymethyl chitosan 1-2 parts, hyaluronic acid 0.1-0.2 parts.The application prepares strontium calcium sulfate by hydrothermal method, using strontium chloride and calcium chloride as raw materials, activates strontium calcium sulfate using N-acetyl cysteine, coats carboxymethyl chitosan and hyaluronic acid on the surface of strontium calcium sulfate, improves the slow-release performance of strontium calcium sulfate, so as to slow down the burst release of strontium element and calcium element in feed, and avoid the toxic reaction caused by excessive release of strontium element and calcium element to the body.

The application relates to the technical field of preparation of low-temperature energy storage phase change materials, and particularly discloses a preparation method of a low-temperature energy storage phase change material, which is characterized by the following specific preparation method: weighing: accurately weighing calcium chloride hexahydrate, ammonium chloride, potassium chloride, strontium chloride hexahydrate, a surfactant, diatomite, fly ash, expanded graphite, an emulsifier and a dispersant according to the formula proportion; melting: placing the calcium chloride hexahydrate in a 250ml beaker, heating in a 60 DEG C digital constant-temperature water bath, and opening a magnetic stirrer after complete melting; mixing: after the system temperature is stabilized, adding the ammonium chloride, the potassium chloride, the surfactant, the diatomite, the fly ash, the expanded graphite, the emulsifier and the dispersant into the flask in batches, and constant-temperature stirring for 30 minutes. The preparation method of the low-temperature energy storage phase change material ensures that the material can rapidly crystallize and release heat when reaching the set phase change temperature, and avoids the temperature control failure problem caused by excessive supercooling.