40 results about "Strontium chloride" patented technology

The invention discloses an oral care desensitization paste and a preparation method thereof, and mainly relates to the technical field of dental medicines. The oral care desensitization cream is prepared from the following components: bioactive glass, strontium chloride, sodium chloride, silicon dioxide, sodium carboxymethyl cellulose, polyethylene glycol 400, a xanthan gum solution, sodium lauryl sulfate, sodium lauroyl sarcosinate, titanium dioxide, beta-glucan, saccharin sodium salt, sorbitol, methylparaben, propyl hydroxybenzoate, edible essence and water. Compared with the prior art, the oral care desensitization paste disclosed by the invention can be used for sealing dentinal tubules and treating hemodia; the traditional Chinese medicine composition can also be used for treating plaque gingivitis, relieving and reducing gingival bleeding and inhibiting and reducing dental plaque; and meanwhile, the condition of mistakenly swallowing and eating in the using process is reduced.

The invention provides a synthesis method of a bromide ion adsorbent for salt lake bromine extraction, and belongs to the technical field of adsorbent preparation, a mixed solution of strontium chloride and manganese chloride and a mixed solution of sodium phosphate and sodium hydroxide are subjected to precipitation reaction to obtain A-Sr4Mn6 (PO4) 6 (OH) 2; the preparation method comprises the following steps: reacting A-Sr4Mn6 (PO4) 6 (OH) 2 with a sodium bromide solution to obtain B-Sr4Mn6 (PO4) 6Br2; and reacting the B-Sr4Mn6 (PO4) 6Br2 with a sodium hydroxide solution to obtain Sr4Mn6 (PO4) 6 (OH) 2, namely the bromide ion adsorbent. The prepared adsorbent can selectively adsorb bromide ions from high-salt brine, and has the advantages of high adsorption capacity, high selectivity, high recyclability and the like; in brine with extremely high chloride ion concentration, low-concentration bromide ions can be selectively adsorbed without being influenced by high-concentration chloride ions; in a high-salt water body, the adsorption capacity on bromide ions is higher; the selective adsorption separation of the chloride ions and the bromide ions is realized.

The invention belongs to the technical field of metal surface chemical treatment, and particularly relates to a metal surface wear-resistant and corrosion-resistant treatment method and application thereof. The wear-resistant and corrosion-resistant treatment method for the metal surface comprises the following steps: carrying out oil and grease removal pretreatment on the metal surface; preparing a solid catalytic high-pressure nitriding agent; and the metal is placed in a closed vacuum environment, and a solid catalytic high-pressure nitriding agent is injected for nitriding treatment. According to the invention, an in-situ solid-phase reaction is adopted, and the solid catalytic high-pressure nitriding agent with high activity is prepared through the aperture confinement effect of an alumina molecular sieve carrier; sodium chloride is used as a permeating agent dispersing agent, has a space confinement effect, prevents the generated nano oxide to promote the growth of the permeating agent and can keep high catalytic activity, and solid octa-amminestrontium chloride is used as an ammonia-rich nitrogen source, so that the gas generation amount is large at low temperature; the alumina molecular sieve carrier and sodium chloride can be repeatedly used, and cost is reduced. The nitriding agent is applied to wear-resistant and corrosion-resistant treatment of the inner cavity surface of a sea water pump, and the nitriding rate is increased by 50% or above under high-pressure low-temperature nitriding.

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 device and a method for preparing high-purity strontium chloride for oral care, and relates to the technical field of strontium chloride preparation. The inner bin body is fixed in the outer bin body; the fixed disc is fixed on the upper end surface of the inner bin body; the atomization assembly is fixed to the axis position of the fixing disc; the hose inlet is formed in the outer bin body and communicates with the atomization assembly; one end of the discharging opening is fixed to the lower end face of the inner bin body, the other end of the discharging opening is connected with a conveying opening, and the conveying opening adopts vacuum conveying; the heating assembly is fixed to the outer bin body and the inner bin body and comprises a blocking opening, a first heating opening, a retention bin and a second heating opening.

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 provides a trace element formula suitable for industrial recirculating aquaculture of penaeus vannamei under an artificial seawater condition and a use method of the trace element formula, and relates to the field of industrial recirculating aquaculture. The trace element formula comprises potassium bromide, boric acid, strontium chloride, sodium silicate, zinc sulfate, ferrous sulfate, copper sulfate, manganese chloride, sodium selenite, ammonium molybdate, calcium gluconate and lysine, and the trace elements are added into a common feed to feed penaeus vannamei boone. The defects in the prior art are overcome, the growth efficiency of the penaeus vannamei boone is effectively improved by supplementing related trace elements in the feed, and the economic benefits of culture are increased.

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 phase-change material for controlling the temperature of a cold fresh warehouse and a preparation method thereof, the phase-change material comprises the following components in percentage by weight: 10-12% of calcium chloride hexahydrate, 5-7% of ammonium chloride, 5-7% of strontium chloride hexahydrate and the balance of carboxymethyl cellulose, and the urea accounts for 10-12% of the weight of the calcium chloride hexahydrate. The strontium chloride hexahydrate accounts for 3%-5% of the weight of the calcium chloride hexahydrate, and the carboxymethyl cellulose accounts for 2%-4% of the weight of the calcium chloride hexahydrate. The phase-change material module is installed on the top and the side face of the cold fresh storage to absorb heat or release heat under the action of the heat exchange device through the change of the solid state and the liquid state, so that the temperature in the cold fresh storage is adjusted, and the blank in the engineering application of the phase-change material cold chain in the prior art is filled up.

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 invention relates to the technical field of environment-friendly rolled magnetic powder manufacturing, in particular to an environment-friendly rolled magnetic powder manufacturing method which comprises the following steps that S1, industrial iron oxide red and strontium carbonate serve as raw materials, proportioning is conducted according to the molecular formula of SrO.nFe2O3, and the molar ratio n = 6.0-6.2; s2, uniformly mixing the raw materials, and adding 3.5 wt%-5.0 wt% of strontium chloride and 1.0 wt%-3.0 wt% of calcium carbonate to obtain a mixture; s3, after the mixture is granulated, pre-sintering is conducted at the temperature of 1050-1150 DEG C, and a pre-sintered material is obtained. The invention provides rolled ferrite magnetic powder which is characterized in that the molar ratio n is larger than or equal to 6, calcium carbonate is added before pre-sintering, so that no residual SrO exists in the magnetic powder, the valence state of chromium is inhibited from being converted from trivalent to hexavalent in the annealing process, meanwhile, by adding CaCO3, the pre-sintering temperature can be effectively reduced, crystal grains are controlled to grow in a flaky mode, and the rolled ferrite magnetic powder which is environmentally friendly and high in yield is obtained. The invention relates to rolled magnetic powder with high magnetic performance and a manufacturing method thereof.

The invention discloses a preparation method of a strontium chloride [89Sr] injection, belongs to the field of injection preparation, and aims to improve the quality of the strontium chloride [89Sr] injection. The method comprises the following steps: 1, adding 3g of strontium chloride into a liquid preparation bag made of a polypropylene material, and then adding 75ml of water for injection to completely dissolve strontium chloride; 2, adding 100 mci of a strontium chloride [89Sr] solution in three times on average, adjusting the pH value to 4.0-4.5 by using a 0.1 mol / L sodium hydroxide solution after the first two times of adding, and continuously adjusting the pH value to 4.0-5.0 by using the 0.1 mol / L sodium hydroxide solution after the third time of adding of the strontium chloride [89Sr] solution. And 3, adding water for injection until the total volume of the liquid is 100ml, and uniformly mixing. And step 4, filtering and sub-packaging. And step five, sterilizing. According to the method, the polypropylene liquid preparation bag is adopted, the strontium chloride solution is added step by step, and accurate pH regulation and control step by step are combined, so that concentrated release of strong acid is avoided, a neutralization reaction is performed smoothly, impurities generated by local over-alkali are prevented, aluminum impurities in the injection are reduced, the success rate of pH regulation is greatly increased, and the success rate of injection preparation is increased.

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.