70results about "Perchlorates" patented technology

The invention discloses a device and a process for recycling perchlorate in fireworks and crackers waste, the process comprises the steps of first-stage washing, first-stage solid-liquid separation, concentration, second-stage washing, second-stage solid-liquid separation and crystallization, the separation, recovery and resource utilization of the perchlorate, aluminum powder and other substances in solid waste can be realized, meanwhile, the waste residue is subjected to innocent treatment, and the recycling of the perchlorate in the fireworks and crackers is realized. The pollution to the environment is reduced; and in the crystallization step, a low-temperature evaporation space is divided into a plurality of units, and the negative effects of overhigh evaporation temperature and sudden temperature increase of perchlorate can be effectively avoided in a manner of changing positions of the cells.

The invention discloses a preparation method of ammonium perchlorate with a hollow spherical structure, which comprises the following steps: firstly, dissolving ammonium perchlorate in a high-temperature N, N-dimethylformamide solvent to form a high-temperature ammonium perchlorate saturated solution; then, adding a high-temperature saturated ammonium perchlorate solution into a low-temperature carbon tetrachloride anti-solvent at a slow feeding rate, and recrystallizing; and finally, completely crystallizing, standing, separating, washing and drying the product to obtain the ammonium perchlorate with the hollow spherical structure. The particle size of the obtained ammonium perchlorate with the hollow spherical structure is 50-100 microns, and the ammonium perchlorate is high in sphericity degree and good in dispersity. The ammonium perchlorate with the hollow spherical structure is applied to the fields of propellants, pyrotechnic compounds, thermite and the like.

The invention discloses a preparation method of an ammonium perchlorate microrod with a uniform morphology. The preparation method comprises the following steps: firstly, heating a triethylene glycol saturated solution of ammonium perchlorate under a room temperature condition to a preset high temperature; then adding the high-temperature ammonium perchlorate saturated solution into an acetic acid anti-solvent at a certain temperature at a certain feeding rate for recrystallization; and finally, standing, separating, washing and drying the product to obtain the ammonium perchlorate microrod. The obtained ammonium perchlorate microrod is regular in morphology, good in dispersity and uniform in size, the length is 40-60 microns, and the width is about 10 microns. The method has the advantages of being high in operability, good in repeatability, easy to industrialize and the like.

The invention discloses a preparation method of large-particle-size ammonium perchlorate hollow microspheres, which is characterized in that pyridine is used as a solvent, butyl octadecenoate is used as an anti-solvent, and the ammonium perchlorate hollow microspheres are obtained by using an anti-solvent crystallization method. The particle size of the obtained large-particle-size ammonium perchlorate hollow microspheres is 100-200 microns, the sphericity degree is high, and the dispersity is good. The method disclosed by the invention is simple in preparation process, simple and convenient to operate and very suitable for large-scale production.

The present invention relates to a sodium layered oxide and a preparation method and application thereof. The present invention cools the sodium layered oxide obtained by calcination in stages while passing a mixed gas (acidic gas and carrier gas): first cooling, heat preservation, and second cooling, to obtain the sodium layered oxide with a coating layer. The present invention can reduce the total alkali content on the surface of the positive electrode material sintered once and also reduce the surface impurity content through a new cooling process. The sodium layered oxide with a coating layer can be directly obtained without secondary post-treatment coating sintering. The cost is low, the operation is easy, the process is controllable, and the air stability and cycle performance of the obtained material are improved.

The utility model belongs to the technical field of ammonium perchlorate processing, and discloses an ammonium perchlorate vacuum crystallizing tank convenient to clean and dry, which comprises a tank body, a fixing frame is fixedly mounted on the outer surface of the tank body, a tank cover is arranged at the top end of the tank body, a discharge pipe is fixedly communicated with the bottom end of the tank body, a discharge valve is fixedly mounted on the discharge pipe, and a discharge valve is fixedly mounted on the discharge valve. A driving motor is fixedly mounted at the top end of the tank cover, and a vacuum pump is fixedly mounted at the bottom end of the tank body; through the inner cylinder and the outer cylinder arranged in the tank body, the screw rod is rotated to enable the outer cylinder to move downwards, so that pores of the inner cylinder are exposed, then the motor is started to enable the inner cylinder to move and rotate along with the rotating shaft, cleaning liquid in the inner cylinder is sputtered to the inner wall of the tank body, and crystals remaining on the inner wall of the tank body are softened and fall off.

The invention discloses a low-temperature micro-negative pressure flash evaporation preparation method of high-quality spherical superfine ammonium perchlorate, and belongs to the technical field of solid propellants. The invention aims to solve the problems of irregular morphology, low sphericity, hollow and porous particles, high sensitivity, high risk of a preparation process, low production efficiency and complex process of superfine AP prepared in the prior art. The method comprises the following steps: 1, adding ammonium perchlorate into an organic solvent; 2, adding sodium hyaluronate into water; 3, dropwise adding the sodium hyaluronate solution into the ammonium perchlorate solution; and 4, flash evaporation. The method is used for low-temperature micro-negative-pressure flash evaporation preparation of high-quality spherical superfine ammonium perchlorate.

The invention discloses an anti-perovskite material. In particular to a perchlorate-doped modified anti-perovskite material as well as a preparation method and application thereof. The anti-perovskite material has efficient quantum luminescence efficiency, has a wide application prospect in the photoelectric field, is high in conductivity, and has a wide application prospect in a solid electrolyte material of a solid-state lithium battery.

The application discloses a rapid evaporation salt collecting device for ammonium perchlorate mother liquor and relates to the technical field of evaporation salt collecting devices. The device comprises an operation table, the upper surface of the operation table is fixedly connected with an inner barrel, the outer part of the inner barrel is fixedly connected with an outer barrel, a heating cavity is formed between the inner barrel and the outer barrel, a coil pipe is arranged in the heating cavity, the coil pipe is fixedly connected to the outer wall of the inner barrel, the top end of the coil pipe is in communication with the heating cavity, a rotary pipe is arranged in the bottom of the inner barrel, a rotary joint is in communication with the bottom of the rotary pipe, a connecting pipe is in communication with the bottom of the rotary joint, and the end, which is away from the rotary joint, of the connecting pipe is in communication with the coil pipe. The rapid evaporation salt collecting device for ammonium perchlorate mother liquor drives the stirring blade to rotate through the sliding sleeve, the stirring blade stirs the ammonium perchlorate mother liquor, the temperature of the ammonium perchlorate mother liquor at all positions in the inner barrel is basically uniform, the phenomenon that the mother liquor is unevenly heated is avoided, the evaporation time is shortened, and the evaporation efficiency is improved.

The present invention discloses a device and process for recycling perchlorate in fireworks and firecracker waste, comprising the steps of primary water washing, primary solid-liquid separation, concentration, secondary water washing, secondary solid-liquid separation and crystallization. The device can achieve the separation, recycling and resource utilization of perchlorate, aluminum powder and other substances in the solid waste, while simultaneously performing harmless treatment on the waste residue to reduce pollution to the environment. In the crystallization step, the low-temperature evaporation space is divided into a plurality of units, and the position of the units is changed to effectively avoid the negative effects of excessively high evaporation temperature and sudden temperature increase of the perchlorate.

The invention relates to the technical field of crystallization devices, and provides an ammonium perchlorate crystallization device and a digital optimization control system, crystallization extraction of ammonium perchlorate is realized by adopting a form that an ammonium perchlorate solution flows relative to cooling water, the ammonium perchlorate solution for preparing ammonium perchlorate is rapidly cooled by adopting a fine-water long-flow mode, and the ammonium perchlorate crystallization device and the digital optimization control system are provided. The ammonium perchlorate preparation continuity and stability are good, the controllability in the ammonium perchlorate preparation process is good, optimal allocation of resources is obtained to a certain degree, the use flexibility is good, the device comprises a cooling mechanism, a foundation frame and a plurality of crystallization mechanisms, the cooling mechanism comprises a cooling water tank, the cooling water tank is fixedly connected to the top end of the foundation frame, and the cooling water tank is fixedly connected to the top end of the foundation frame. A circulating cooling assembly is installed in the foundation frame, the circulating cooling assembly is used for circulating and cooling cooling water in the cooling water tank, each crystallization mechanism comprises a first annular pipe and a second annular pipe, and the cooling water tank is provided with a plurality of first lead-in ports, a plurality of second lead-in ports, a plurality of first lead-out ports and a plurality of second lead-out ports.

The invention belongs to the technical field of feeding devices, and relates to a feeding device for ammonium perchlorate production and a use method of the feeding device. The device comprises a feeding box and an adsorption assembly; an opening is formed in the upper end of the feeding box, and a guide plate is rotationally mounted at the upper end of the feeding box; a ventilation hole is formed in the upper end of the material guide plate; the adsorption assembly comprises a first mounting frame, a second mounting frame and filter cloth. Filter cloth is arranged on the first mounting frame and the second mounting frame. The upper end of the feeding box is opened by exhausting air from the air pipe, meanwhile, the ventilation holes are opened, powder generated in the process of feeding materials into the feeding box is adsorbed to the filter cloth, and the material powder is prevented from flying out of the feeding box. And after feeding is completed, the two guide plates block the upper end of the feeding box. And material powder adhered to the filter cloth is blown off by inflating the air pipe. And the first mounting frame and the second mounting frame are rotated in the direction away from the air pipe, so that the first mounting frame and the second mounting frame are vibrated, and material powder on the filter cloth is vibrated off.

To provide a photocatalyst complex that causes a BiVO4 photocatalyst to be supported on a porous glass particle carrier formed from a plurality of glass particles, thereby improving the handleability of the BiVO4 photocatalyst, and demonstrating high photocatalytic activity.SOLUTION: A photocatalyst complex has a porous glass particle carrier formed from a plurality of glass particles and a photocatalyst composed of a bismuth vanadate semiconductor, wherein the photocatalyst coexists with the glass particle carrier, and the glass particle carrier has a specific surface area of 12-240 cm2 / g.SELECTED DRAWING: None

The invention provides a mixing reactor for preparing potassium perchlorate, and relates to the technical field of chemical equipment, the mixing reactor comprises a tank body assembly, the top of the tank body assembly is provided with a top cover assembly, the center axis position of the top of the top cover assembly is vertically provided with a stirring assembly, and the stirring assembly comprises a stirring main shaft, a driving motor and a quick release flange embedded with the top cover assembly; the top cover comprises a top cover body and a quick-release flange, the quick-release flange is of a double-layer structure, the upper layer and the top cover body are positioned through a bearing, the lower layer and the stirring spindle are positioned in a sleeved mode, and the blade assembly is installed in the middle and at the bottom end of the stirring spindle and sleeved with the surface of the stirring spindle and comprises an installation hoop connected with the stirring spindle in a positioned mode. Stirring blades are symmetrically mounted on the two sides of the mounting hoop, homogenizing holes are uniformly formed in the surfaces of the stirring blades, the homogenizing holes are polygonal holes, burrs are removed from the edges of the stress surfaces of the homogenizing holes, impact grooves are formed in the surfaces of the stirring blades at equal intervals, and the cross section of each impact groove is of a structure with the deep middle and the two gradually shallower sides.

The invention relates to the technical field of potassium perchlorate waste brine treatment, and specifically discloses a distillation recovery process based on potassium perchlorate waste brine, comprising the following steps: roughly filtering the potassium perchlorate waste brine, heating it, and passing the pre-heated potassium perchlorate waste brine into an evaporator for evaporation and crystallization; calculating and obtaining the potassium perchlorate precipitation value and wastewater inflow in the evaporation and heating process of the evaporator within a unit time t based on the evaporation initial value of the potassium perchlorate waste brine in the evaporator; comparing with the target evaporation temperature value of the potassium perchlorate waste brine and generating a control signal; adjusting the evaporation information of the evaporator based on the control signal, separating the crystal from the solution after the crystallization is completed, ensuring the stability of the evaporation and crystallization of the potassium perchlorate waste brine, avoiding the fluctuation of the crystallization precipitation rate in the crystallization process, thereby affecting the crystallization quality of potassium perchlorate, facilitating the uniform growth of potassium perchlorate crystals, and ensuring the quality of evaporation and crystallization.

The invention discloses a system and a process method for producing small-particle-size AP products with large circulation volume, the system comprises a charging subsystem, a circulation subsystem, a belt fine grain control subsystem, a cooling subsystem and a crystallization subsystem which are connected through a pipeline in a closed loop mode, the belt fine grain control system is integrated in a traditional large circulation crystallization system, and by adjusting the split ratio of crystal mush returned to a crystallizer, the AP products with the small particle size can be produced. And the content of solid materials serving as seed crystals in the system is actively controlled (namely, the solid materials are provided with fine grains). The industrial problems that the number of crystal nucleuses is insufficient due to low supersaturation degree in a large circulation process, and small-particle-size products cannot be produced easily are solved. The MPC multivariable model prediction controller is used for cooperatively regulating and controlling the circulation amount and the fine grain amount, and an ultrasonic anti-scaling and corrugated pipe external cooler can be selectively arranged, so that the granularity of a small-particle-size AP product is stable and controllable, meanwhile, the spheroidization degree and the surface smoothness of the crystal are remarkably improved, the free-running property, the stacking density and the combustion performance of charge of a user are effectively improved, and the service life of the product is prolonged. The method is suitable for continuous, stable and large-scale production of high-quality AP.

The utility model discloses a low-energy-consumption purification device for ammonium perchlorate, and relates to the technical field of inorganic salts. The ammonium perchlorate low-energy-consumption purification device comprises a device shell and a waste heat circulation mechanism, the waste heat circulation mechanism comprises a device bottom plate, a heating base, a condensation box, a coil pipe, a first gas outlet pipe and a second gas outlet pipe, the device bottom plate is fixedly connected to the bottom of the device shell, and the heating base is fixedly connected to the bottom of the device bottom plate; the condensing box is fixedly connected into the device shell, the bottom of the condensing box is fixedly connected with the device bottom plate, the coil pipe is fixedly connected to the outer surface of the condensing box, the multiple first air outlet pipes are fixedly connected to the surface of the condensing box, and each first air outlet pipe is fixedly connected with the coil pipe. Through the arrangement of the waste heat circulation mechanism, water vapor in the heating process heats the surface of the condensation box again, waste heat generated in the crystallization process is reused, the overall energy consumption can be remarkably reduced, and carbon emission and energy resources in the production process are reduced.

The utility model relates to the potassium perchlorate precipitation field especially relates to a needle type potassium perchlorate precipitation filtering device. Including the precipitation box, first cooling precipitation mesh plate and second cooling precipitation mesh plate, the precipitation box main part is square box structure, the inside of precipitation box is vertically arranged with a plurality of first cooling precipitation mesh plate and second cooling precipitation mesh plate, first cooling precipitation mesh plate and second cooling precipitation mesh plate level from one side first insertion port and second insertion port insert, first cooling precipitation mesh plate and second cooling precipitation mesh plate staggered arrangement, the top middle part of precipitation box is provided with liquid inlet. Through the refrigeration of refrigerating machine to the precipitation box, makes inside keep a temperature that can fast precipitate, the structure of first cooling precipitation mesh plate and second cooling precipitation mesh plate can make solution can quickly spread, thereby make the precipitation effect better, first cooling precipitation mesh plate and second cooling precipitation mesh plate can be quickly replaced after the precipitation is complete.

The invention relates to the technical field of separation, and discloses a rapid ammonium perchlorate crystallization device and method.The rapid ammonium perchlorate crystallization device comprises an evaporation tank, a supporting column is fixedly installed at the top of the evaporation tank, and the supporting column is fixedly sleeved with water absorption sponge which covers the whole inner wall of the top of the evaporation tank; a driving assembly for driving the water absorption sponge to be folded or unfolded in an umbrella shape by taking the supporting column as a central shaft is mounted on the evaporation tank; a stirring shaft is mounted in the evaporation tank; a wringing assembly is mounted in the evaporation tank and is in transmission fit with the stirring shaft; a funnel-shaped water collecting groove is formed in the top end of the stirring shaft, and a water flowing channel is formed in the stirring shaft; the water flowing channel penetrates through the stirring shaft along the axial direction of the stirring shaft, and is communicated with the water collecting groove. The water absorption sponge can completely cover the inner wall of the top of the evaporation tank, so that steam is effectively prevented from being condensed on the inner wall of the top of the evaporation tank, the phenomenon of secondary falling is avoided, the separation and crystallization efficiency is greatly improved, and use is convenient.

The utility model discloses a quicksand type potassium perchlorate production device which comprises a centrifugal machine, a centrifugal head tank, a material mixing device, a material screening device and a soaking tank, the material mixing device comprises a charging barrel, a stirring mechanism, a sealing cover plate mechanism and a discharging port, the stirring mechanism is connected with the charging barrel, the sealing cover plate mechanism is installed on a feeding port of the charging barrel in a sealing mode, and the material screening device is installed on the discharging port of the charging barrel. The discharge port is formed in the bottom of the charging barrel; the stirring mechanism is used for mixing a plurality of materials in the charging barrel; the material screening device comprises a material screening groove, a discharging bin, a filter screen and a vibration motor, the material screening groove is formed in the bottom of the material barrel, the discharging port is communicated with the material screening groove, the discharging bin is installed at an opening in the lower portion of the material screening groove, the filter screen is installed in the material screening groove, the discharging port is higher than the filter screen, and the vibration motor is installed on the material screening groove; the potassium perchlorate production device aims at solving the problem that in the prior art, when a potassium perchlorate production device is used for producing potassium perchlorate, potassium perchlorate is caked.

The invention relates to the technical field of perchlorate recovery, in particular to a process for recovering perchlorate from perchlorate packaging bags, which comprises the following steps: S1, sequentially conveying the packaging bags into a recovery chamber for primary recovery and secondary recovery; s2, liquid I generated by primary recovery is guided into a distillation tower for distillation and crystallization, and liquid II generated by secondary recovery is guided into a primary recovery pool to be used as water for primary recovery and recycled; s3, purified water is introduced into a distillation tower to serve as condensate water, and the purified water absorbing heat serves as a water source for secondary recovery; s4, purified water obtained after distillation is collected and used as water for condensation of a distillation tower, and crystals obtained after distillation of the distillation tower are collected; the step S1 comprises the steps that S101, bag opening is conducted, specifically, a packaging bag is turned over, so that the inner side of the packaging bag is completely exposed; and S102, recycling is conducted, specifically, the turned packaging bag is washed and recycled. The system improves energy utilization and is more environment-friendly.

A solid electrolyte composition according to the present disclosure comprises: a solid electrolyte material containing an oxygen element and a halogen element; and an organic solvent. The organic solvent comprises at least one component selected from the group consisting of a compound having a halogen group and a hydrocarbon. The solid electrolyte material contains at least one element selected from the group consisting of Zn, Sn, Al, Sc, Ga, Bi, Sb, Zr, Hf, Ti, Ta, Nb, W, Y, Gd, Tb and Sm.

The invention relates to the technical field of crystallization devices, and proposes an ammonium perchlorate crystallization device and a digital optimization control system. The device adopts the form of the flow of an ammonium perchlorate solution relative to cooling water to realize the crystallization extraction of ammonium perchlorate. The ammonium perchlorate solution for preparing ammonium perchlorate adopts a trickle-and-long-flow method to realize rapid cooling. The preparation of ammonium perchlorate has good consistency and stability, good controllability during the preparation of ammonium perchlorate, and optimized allocation of resources is achieved to a certain extent. The device has good use flexibility. The device comprises a cooling mechanism, a basic frame and a plurality of crystallization mechanisms. The cooling mechanism comprises a cooling water tank, which is fixedly connected to the top of the basic frame. A circulating cooling component is installed in the basic frame. The circulating cooling component is used for circulating and cooling cooling water in the cooling water tank. The plurality of crystallization mechanisms each comprises a first annular tube and a second annular tube. The cooling water tank is provided with a plurality of first inlets, a plurality of second inlets, a plurality of first outlets and a plurality of second outlets.

The invention discloses a preparation method of a monodisperse ammonium perchlorate micron rounded-corner cuboid with uniform particle size, which comprises the following steps: adding an ammonium perchlorate solution into a benzyl alcohol anti-solvent, and recrystallizing to prepare the monodisperse ammonium perchlorate micron rounded-corner cuboid with uniform particle size. The obtained micron rounded cuboid of ammonium perchlorate is about 25 microns, regular in morphology, good in dispersity and uniform in particle size. The preparation process is simple, operation is easy and convenient, the obtained product is good in stability, good in repeatability, high in yield and suitable for large-scale production, the morphology category of ammonium perchlorate is expanded, and the prepared monodisperse ammonium perchlorate micron rounded cuboid with the uniform particle size has wide application prospects in the field of propellants.

The invention discloses a method and a system suitable for producing sodium perchlorate in a high-altitude low-pressure low-oxygen environment, which can adapt to different low-pressure low-oxygen environments through three-stage ceramic membrane gradient filtration and electrolytic pressure enhanced oxygen supply without additional auxiliary equipment, and realize the purposes that the yield is greater than or equal to 85%, the product purity is greater than or equal to 99.6%, the chloride content is less than or equal to 0.12%, and the product purity is greater than or equal to 99.6%. The core defects that in the prior art, the high-altitude yield is low, impurity removal is not thorough, and adaptability is poor are effectively overcome. Salt lake potassium and lithium extraction waste tail salt is used as a main raw material, salty mud is recycled to be used as a building material, the mother liquor recycling rate is larger than or equal to 96%, no solid waste or waste water is discharged, tail gas reaches the standard, and the green development requirement is met. And the equipment investment is reduced by 13-15%, the annual maintenance cost is reduced by 29-36%, the energy consumption per ton of products is reduced to 820-845 kWh, and the economical efficiency is outstanding. Core equipment is mature, parameters can be adjusted along with the altitude through a built-in database, high-altitude low-maintenance scenes can be adapted, large-scale production can be achieved, product indexes are superior to industrial standards, and market competitiveness is high.

The invention relates to the technical field of coating equipment, and discloses an ammonium perchlorate crystal anti-caking coating device and a coating method thereof.The ammonium perchlorate crystal anti-caking coating device comprises a stirring tank body and a supporting frame installed at the bottom end of the stirring tank body, a movable rod is movably installed in the middle of the interior of the stirring tank body, and stirring blades are evenly arranged on the movable rod; a scraping frame is movably sleeved with the stirring tank body, annular teeth are fixedly mounted at the top end of the scraping frame, and the annular teeth are in meshed connection with stirring blades mounted at the top end of the movable rod. A scraping frame is movably mounted in the stirring tank body, and a scraping plate is arranged on the scraping frame, so that in order to enable the scraping frame and a movable rod to cooperatively work, when the movable rod drives stirring blades to rotate, the stirring blades can drive annular teeth and the scraping frame to operate, and the scraping plate can be scraped; when the ammonium perchlorate crystals and the lauryl sodium sulfate in the stirring tank body are stirred, the inner wall of the stirring tank body is scraped, and waste is avoided.

The invention discloses a preparation method of a hollow micron spherical ammonium perchlorate material, which is characterized in that dimethyl sulfoxide is used as a solvent, nonanoic acid is used as an anti-solvent, polyvinylpyrrolidone is used as a surfactant, hollow micron spherical ammonium perchlorate is obtained by an anti-solvent crystallization method, and the average particle size is about 50 microns. The method is simple in process, safe and fast, and the obtained hollow micron spherical ammonium perchlorate material is high in purity, good in sphericity degree, good in dispersity and suitable for industrial production.

The utility model discloses an ammonium perchlorate continuous crystallization preparation device, and relates to the technical field of ammonium perchlorate production equipment. The continuous crystallization preparation device for ammonium perchlorate comprises an ammonium perchlorate crystallizing tank, the crystallizing tank cleaning assembly comprises a second driving motor, the output end of the second driving motor extends into the ammonium perchlorate crystallizing tank and is fixedly connected with a movable frame, and the movable frame is rotationally connected with the ammonium perchlorate crystallizing tank; a movable ring is rotationally connected to the interior of the ammonium perchlorate crystallizing tank, four connecting rods and four spiral blades are fixedly connected between the movable frame and the movable ring, and filtering holes and through grooves are formed in the surface of the movable ring. By means of the structure, ammonium perchlorate crystals attached to the inner wall of the ammonium perchlorate crystallizing tank can be scraped away conveniently, the situation that ammonium perchlorate crystal residues affect the follow-up crystallizing process of an ammonium perchlorate solution is avoided, and the yield of the ammonium perchlorate crystals is increased.

This invention discloses a magnesium perchlorate concentration apparatus and its production method, comprising a reaction tank 1 and a reaction tank 2, both having inlets; a perchloric acid solution storage tank is connected to the reaction tank 1 and the reaction tank 2 via a split-flow slow-drip pipeline; the reaction tank 1 and the reaction tank 2 are interconnected at the top via a switching pipeline controlled by a bidirectional pump to create a vacuum environment and exchange heat between the tanks; both the reaction tank 1 and the reaction tank 2 have outlets for discharging anhydrous magnesium perchlorate and outlet pipelines for discharging the solution at the bottom. The production method includes a split-flow slow-drip and dual-pipeline solution compensation method for producing concentrated magnesium perchlorate; and a method for concentrating magnesium perchlorate based on the split-flow slow-drip and dual-pipeline solution compensation method for producing concentrated magnesium perchlorate, performing vacuum exchange and heat exchange under the alternating action of the two tanks; thus improving the efficiency, stability, and continuity of magnesium perchlorate concentration production.

The invention discloses a preparation method of a hollow ammonium perchlorate micron cuboid, which comprises the following specific steps: firstly, dissolving ammonium perchlorate in an ethylene glycol solvent to form an ammonium perchlorate saturated solution, and stirring the ammonium perchlorate saturated solution in a shaking table; then, adding an acetic acid anti-solvent into the saturated solution, and recrystallizing ammonium perchlorate due to the influence of supersaturation; and finally, when the crystallization process is completely finished, standing and separating the product, and washing and drying to obtain the hollow ammonium perchlorate micron cuboid. The hollow ammonium perchlorate micron cuboid obtained by the invention has good dispersity and narrower particle size distribution. The method disclosed by the invention is simple, safe, convenient to operate, low in cost and easy to realize large-scale production.