98results about "Magnesium hydroxide" patented technology

The invention belongs to the technical field of inorganic chemical material preparation, and discloses a high-selectivity crystallization and impurity migration inhibition method of high-purity magnesium hydroxide. The method comprises the following steps: a phenylphosphonic acid surface modifier is introduced in the initial stage of crystallization, molecules of the phenylphosphonic acid surface modifier selectively occupy high-activity Mg < 2 + > sites of a magnesium hydroxide crystal face through bidentate coordination, and a molecular-level interface barrier with steric hindrance and electrostatic repulsion effects is formed, so that a Ca < 2 + > migration path is specifically blocked, and Mg < 2 + > crystallization is not influenced. The preparation method of the high-purity magnesium hydroxide is high in selectivity, high in efficiency, low in cost and environmentally friendly, the interface adsorption behavior of calcium ions is accurately intervened in the initial stage of crystallization through a molecular level surface engineering means, the technical bottleneck that impurity migration and lattice doping are difficult to control in a traditional process is fundamentally solved, and the preparation method is suitable for industrial production. And a brand new technical path is provided for green manufacturing of high-performance inorganic functional materials.

The invention relates to an extraction agent and an extraction method, and relates to the technical field of wet extraction of industrial solid waste, and the extraction agent comprises the following components in parts by mass: an extraction main agent, an anti-impurity stabilizer and an extraction aid; the extraction main agent comprises di (2-ethylhexyl) phosphate and mono (2-ethylhexyl) phosphate, the impurity-resistant stabilizer comprises an imidazoline derivative, a triazine derivative and dimethyl methylphosphonate, and the extraction assistant comprises isooctyl alcohol; the extraction method comprises the steps of ash ball preparation, impurity removal, extraction and the like. According to the extraction agent and the extraction method, interference impurities such as trace heavy metal ions, sulfides and cyanides generated due to component fluctuation in the purified ash of the calcium carbide furnace are selectively chelated, the impurities are prevented from being combined with the extraction main agent, and then the anti-interference stability of the extraction agent under the condition that the impurity content of the purified ash of the calcium carbide furnace fluctuates is improved; and the control difficulty in the production process is reduced.

To provide a method for producing particles of magnesium hydroxide by which the particles of the magnesium hydroxide can simply be grown by using a magnesium hydroxide material containing a prescribed amount of silicon.SOLUTION: The present disclosure relates to a process for producing particles of magnesium hydroxide. The manufacturing method according to the first disclosure includes a mixture forming step. In the mixture formation step, a mixture is formed by mixing a magnesium hydroxide material containing 100ppm or more and a slurry containing a seed crystal of magnesium hydroxide. The production method according to the first disclosure includes an aging method. In the aging method, the mixture is aged to grow the seed crystals and form particles of the magnesium hydroxide having a larger particle size than the seed crystals.SELECTED DRAWING: None

The present invention relates to a method for recovering valuable materials from waste. The method for recovering valuable materials from waste comprises the steps of: (a) pulverizing waste, which is generated from an evaporator or a crystallizer among equipment of a zero liquid discharge process for desulfurization wastewater, and then injecting same into a dissolution tank so as to dissolve same in a solvent and separating same into a gypsum (CaSO4) precipitate and a supernatant from which the gypsum has been removed; (b) dissolving, in a desulfurization tank, barium chloride (BaCl2) in the supernatant from which the gypsum has been removed, and separating same into a barium sulfate (BaSO4) precipitate and a supernatant from which the barium sulfate has been removed; (c) dissolving, in a hydroxide tank, sodium hydroxide (NaOH) in the supernatant from which the barium sulfate has been removed, and separating same into a magnesium hydroxide (Mg(OH)2 precipitate and a supernatant from which the magnesium hydroxide has been removed; and (d) injecting, into a salt pond, the supernatant from which the magnesium hydroxide has been removed, so as to recover sodium chloride (NaOH).

The present invention relates to a method for the CO2-neutral commercial recovery of metallic magnesium from seawater, wherein the recovered magnesium is further processed for use as a metallurgical raw material and can also be used as a starting material for the CO2-neutral recovery of hydrogen, and the CO2 recovered or released throughout the method is dissolved and bound to seawater.

A method may comprise producing liquid sodium and chlorine gas by electrolysis. The liquid sodium may be redox reacted with iron and / or manganese oxide in an ore to produce iron and / or manganese and s

The invention relates to a preparation method of a flaky magnesium hydroxide flame retardant, belonging to the technical field of inorganic material preparation, and the preparation method of the flaky magnesium hydroxide flame retardant comprises two steps of precipitation method synthesis and epoxy coating. According to the obtained flaky magnesium hydroxide flame retardant, the particle size distribution tested by a laser particle size analyzer is that D10 is 0.022-0.034 [mu] m, D50 is 0.591-0.608 [mu] m, and D90 is 1.398-1.749 [mu] m, 40 wt% of the flaky magnesium hydroxide flame retardant is added into EVA, the limit oxygen index of the EVA is increased to 31.1-32.0%, and the UL94 vertical combustion grade can reach V-1.

This invention discloses a low-viscosity, high-solids-content magnesium hydroxide suspension and its preparation method, comprising the following components by mass: 40-60 parts water, 40-60 parts magnesium hydroxide, 0.1-4 parts dispersant, and 0.01-2 parts stabilizer; wherein the viscosity of the magnesium hydroxide suspension is <100 cp; and the particle size D of the magnesium hydroxide is... 50 The particle size is 1~3μm. This invention successfully prepared a low-viscosity, high-solids-content magnesium hydroxide suspension that is stable for a long time and does not exhibit gelation by adding appropriate amounts of dispersants and stabilizers and adjusting the particle size of magnesium hydroxide particles, combined with high-speed stirring and ball milling processes. This not only improves processing efficiency and product performance, but also demonstrates significant economic benefits in transportation and storage.

The application discloses a preparation method of a flame-retardant LLDPE with good processability, and comprises the following steps: step (1), crushing LLDPE raw materials to obtain LLDPE raw material powder; step (2), uniformly mixing flaky magnesium hydroxide into the LLDPE raw material powder to obtain mixed raw material powder; and step (3), adding the mixed raw material powder into a double-screw extruder to perform granulation to obtain the flame-retardant LLDPE. The application can solve the problem that the existing LLDPE material has poor processability after adding inorganic flame retardants.

The present invention provides an annealing separator which, after being coated with the annealing separator, can maintain the shape of the roll material after annealing at a high temperature of 1000°C or more. The annealing separator used in the annealing separator contains magnesium oxide as the main component, 0.020-0.200% by mass of B, 0.030-1.000% by mass of SO3, and 0.050-1.000% by mass of P2O3, and contains 0.2-5.0% by mass of particles with a particle size of more than 45 μm and 75 μm or less, and the particles with the above particle size contain 0.002-0.020% by mass of B, less than 0.030% by mass of SO3, and less than 0.050% by mass of P2O3.

The invention relates to a multi-metal element nano-aluminum adjuvant and a preparation method and application thereof, the nano-aluminum adjuvant is a nano-particle containing an aluminum element and at least one metal element selected from magnesium, zinc and calcium, the nano-particle has a layered crystal structure, and the particle size is distributed in a range of 20-2000 nm. The difunctional nano-aluminum adjuvant has the beneficial effects that the difunctional nano-aluminum adjuvant is simple and convenient in preparation method, definite in component and uniform in particle size, the particle size of the particles can be manually regulated and controlled, and the difunctional nano-aluminum adjuvant can directly promote antigen presenting cells to be mature and activated and carry out MHC-I or II type antigen presentation.

To provide a method for producing a magnesium hydroxide particle by which the magnesium hydroxide particle can be easily grown by using a magnesium hydroxide material comprising a prescribed amount of silicon.SOLUTION: The present disclosure relates to a method for producing a magnesium hydroxide particle. A production method according to the first disclosure includes a mixture forming step. In the mixture forming step, a magnesium hydroxide material comprising 100 ppm or more of silicon and a slurry comprising a seed crystal of magnesium hydroxide are mixed to form a mixture. The production method according to the first disclosure includes an aging method. In the aging method, the seed crystal is grown by aging the mixture, and the magnesium hydroxide particle having a larger particle size than the seed crystal is formed.SELECTED DRAWING: None

The invention relates to a reaction device for preparing a magnesium hydroxide flame retardant based on a gas phase method and a preparation method thereof, and belongs to the technical field of chemical engineering equipment and inorganic non-metallic material preparation. The reaction device comprises a precursor precise conveying system, a multi-temperature-zone laminar flow reaction system, an efficient particle collecting system and a central process control system. According to the method, a magnesium source precursor gas-phase flow, a hydrolytic agent gas-phase flow and a surface modifier gas-phase flow are respectively provided by the precursor precision conveying system, are introduced into the multi-temperature-zone laminar flow reaction system through the three coaxial laminar flow nozzles, and are sequentially subjected to controlled mixing in the preheating mixing zone. The whole process is carried out in a gas-phase low-pressure laminar flow environment, hard agglomeration of particles is effectively avoided, the prepared magnesium hydroxide flame retardant has the advantages of being uniform in primary particle size, good in dispersity and high in surface organification degree, and the compatibility and flame retardant efficiency of the magnesium hydroxide flame retardant in a polymer matrix are remarkably improved.

The invention provides a method for preparing hydrophobic magnesium hydroxide through a bischofite modified in-situ ammonium method, and relates to the technical field of salt lake secondary magnesium resource utilization. The method comprises the following steps: dissolving primary bischofite, filtering and removing impurities to obtain a pure bischofite solution; preparing an active modifier from octyltriethoxysilane, ethanol, deionized water and acetic acid; adding the bischofite solution and ammonia water into the active modifier at a constant speed, and magnetically stirring to obtain a white precipitate; and finally, washing and drying the white precipitate to obtain the hydrophobic magnesium hydroxide powder. Octyltriethoxysilane is added in the process of preparing magnesium hydroxide through an ammonium method, modification and precipitation are carried out synchronously, a secondary process is not needed, hydrophilic magnesium hydroxide is converted into hydrophobic magnesium hydroxide, the affinity of powder to water is greatly reduced, and the performance of the composite material is improved; the magnesium hydroxide powder material with high performance and high application value can be prepared, and the method has the advantages that a secondary process is not needed, and the performance of the composite material is improved.

The invention relates to a method for technically obtaining magnesium metal from seawater in a CO2-neutralizing manner, in which the obtained magnesium is further processed for use as a metallurgical raw material, but can also be used as a starting material for obtaining hydrogen in a CO2-neutralizing manner, the CO2 obtained or released during the entire process is dissolved and incorporated in seawater.

The present invention relates to a CO ferromagnetic material processing method, comprising the steps of: preparing a starting product comprising at least 20% by mass of one or more of ultramafic rock, weathering products of ultramafic rock, olivine and / or industrial waste; homogenizing the starting product; and hydrothermally treating the homogenized starting product in a heat treatment device at a temperature above 100° C. for at least 24 hours. 2 The method further relates to a method for sequestering CO. The converted starting product is then dehydrated of bound water by thermal treatment and / or reactive grinding. 2 In contact with CO 2 and combine.

The invention discloses a method for simultaneously preparing calcium propionate and magnesium hydroxide from natural dolomite, which comprises the following steps: adding dolomite powder into a propionic acid aqueous solution, stirring for 1-6 hours at 10-90 DEG C, then filtering, and collecting filtrate A; adding calcium hydroxide into the filtrate A, standing at 10-90 DEG C for 10-50 minutes, then filtering, and respectively collecting precipitates and filtrate B; drying the precipitate to obtain magnesium hydroxide, and drying the filtrate B at low temperature to obtain calcium propionate; according to the method, natural dolomite is directly acidified by using propionic acid, the total yield of calcium propionate is increased by adding calcium hydroxide to neutralize excessive propionic acid, waste of propionic acid is avoided, and calcium hydroxide precipitates magnesium ions, so that calcium propionate and magnesium hydroxide products are obtained through separation; compared with the prior art, the raw material cost is lower, natural dolomite does not need to be calcined, the process is simple, energy consumption is low, preparation conditions are green and mild, and the method has industrial application prospects.

The application relates to the technical field of preparation and application of modified magnesium hydroxide flame retardants, in particular to magnesium hydroxide with self-lubricating function, a preparation method and application. The preparation method is as follows: magnesium salt is prepared into an aqueous solution, a composite crystal type guide agent is added, and mixing is uniformly carried out; the composite crystal type guide agent comprises an organic phosphonate dispersant, polyether polyol and low-molecular alkyl sulfonate; an alkaline precipitator is added dropwise to adjust the pH to weak alkalinity, a precipitation reaction is carried out, and then gradient temperature hydrothermal crystallization treatment is carried out; the product of the hydrothermal crystallization treatment is subjected to solid-liquid separation, washing and drying to obtain a magnesium hydroxide matrix, the magnesium hydroxide matrix is modified by a dry method to obtain silane coupling agent to obtain the magnesium hydroxide with self-lubricating function. The obtained magnesium hydroxide product has low particle friction coefficient and has intrinsic self-lubricating effect, can significantly reduce extrusion pressure and improve the wire-out speed when applied to cable materials, and can maintain excellent mechanical properties, flame retardant properties and electrical insulation properties.

The preparation method comprises the following steps: firstly, adding PEG (Polyethylene Glycol) which accounts for 3% of the mass of an industrial byproduct magnesium chloride solution as a dispersing agent into the industrial byproduct magnesium chloride solution, stirring and dissolving under the ultrasonic action to obtain a mixed solution, then carrying out ultrasonic precipitation reaction, and carrying out ultrasonic precipitation reaction on the mixed solution at constant temperature to obtain the flame-retardant grade magnesium hydroxide. The preparation method comprises the following steps: under the combined action of stirring and ultrasound, dropwise adding ammonia water to carry out a precipitation reaction, then standing and curing the reacted slurry at a constant temperature, and finally carrying out solid-liquid separation, washing, drying and grinding to obtain a flame-retardant grade magnesium hydroxide product, the XRD pattern of the product is consistent with the characteristic diffraction peak of a standard magnesium hydroxide diffraction pattern, the diffraction peak is sharp and has no impurity peak, and the flame-retardant grade magnesium hydroxide product is obtained. The particle size D90 is less than or equal to 1.5 mu m, and the morphology is an irregular sheet structure which is uniformly dispersed. According to the invention, the industrial byproduct magnesium chloride is used as a raw material to prepare the flame-retardant grade magnesium hydroxide with high purity, superfine particle size and good dispersity, and high-valued utilization of the byproduct magnesium chloride is realized.

A sea water desalination process and plant wherein intake sea water is delivered to at least one reverse osmosis pass comprising at least one reverse osmosis membrane to produce permeate product water and brine; wherein at least a portion of the brine is delivered to at least one reactor 2 for the removal of carbonates-based chemical in the brine by precipitating calcium carbonate. The calcium carbonate is converted in a regenerator 10 to produce calcium hydroxide and carbon dioxide. This provides for a series of benefits in the overall cost efficiency and sustainability of the process / plant.

The present invention provides a method (100a) and system for controlling the operation of a chemical plant arranged to carry out a chemical process which produces iron and / or manganese in elemental form from respective oxides thereof using liquid sodium as a reductant of the respective oxides and which can also produce an oxide or hydroxide of at least one of calcium, magnesium and iron from a carbonate mineral of at least one of calcium, magnesium and iron. The method (100a) comprises assigning (103a) a respective value to the no. of mol of each one of the chemical species involved in the chemical process as starting materials and products thereof, subject to constraints which are derived from the law of conservation of mass of the constituent elements of those chemical species. The method also assigns (103b) respective values to the nos. of mol of chemical species which are consumed during the chemical process by electrolytic or thermochemical decomposition into their constituent elements, subject to another set of constraints which are derived from the minimum requirements for these constituent elements by the chemical process itself. The former set of constrains allows the materials balance of the process to be controlled and the latter set of constraints allows the energy balance of the process to be controlled. The method then comprises operating (104) the chemical plant to carry out the process according to the values thus assigned. Respective values may be assigned (103a, 103b) to the nos. of mol of a preferred subset of the chemical species involved in the process as starting materials and products thereof and / or a preferred subset of the chemical species which are consumed during the process by electrolytic or thermochemical decomposition into their constituent elements, before values are then assigned to remaining ones of the nos. of mol of other chemical species not in the preferred subset. This allows the chemical plant to be operated in such a way as to optimise its performance relative to such variables as the respective nett amounts of a preferred one or more of the materials it consumes and / or produces, the energy efficiency of a part or the whole of the chemical process and / or its cost effectiveness, for example. Amongst other things, the constraints also ensure that the chemical process always produces less carbon dioxide than instead calcining a carbonate mineral of at least one of calcium, magnesium and iron to produce its corresponding oxide, and that in a large number of cases, it can produce no carbon dioxide at all. Also disclosed is a graphical technique which may be used to assign the respective values to the nos. of mol of the chemical species involved in the chemical process subject to the stated constraints, whereby the method and system of the invention may be implemented.

The application discloses a gas-liquid phase parallel flow rotating liquid film reactor and application thereof in preparation of metal hydroxide. The application is based on the basic process of preparing metal hydroxide from a gas-liquid phase precipitation method, and a gas-liquid phase multi-fluid parallel flow rotating liquid film reactor is designed through computational fluid dynamics simulation analysis, multiple gas-liquid fluid inlets are constructed, and the traditional vertical inlet is improved into tangential feeding along the rotating direction, so that the forced mixing process of the gas-liquid two phases in the reaction space is improved, the microscopic mixing and nucleation process of the reactants are strengthened, the inlet anti-overflow device is added, the upward overflow of the increased inlet flow fluid is avoided, the quality control of the product is strengthened, the efficient control of the nucleation particle size and distribution is realized, the production efficiency and product quality can be improved, the product with small particle size and narrow particle size distribution is obtained, the product particle size can be controlled in the range of 15-200 nm, and the primary particle size distribution range can be reduced to 30-60 nm.

The invention discloses a full-recycling process and system for pickling wastewater generated by rare earth ore hydrometallurgy, which comprises the following steps: feeding the pickling wastewater into a calcium sulfate pre-crystallization reactor to react with lime emulsion under a low pH condition to obtain calcium sulfate crystals, feeding sulfur removal wastewater into a calcium fluoride crystallization reactor to increase pH, and reacting with a lime solution to obtain calcium fluoride crystals; carrying out filter pressing on the fluorine-removed water to obtain silicon dioxide precipitate, enabling filter-pressed water to enter a ferrous hydroxide crystallization reactor to react with sodium hydroxide to obtain ferrous hydroxide crystals, enabling molten iron to enter a magnesium hydroxide crystallization reactor to react with sodium hydroxide to obtain magnesium hydroxide crystals, enabling magnesium-removed water to enter a neutralization regulating tank, adding acid for neutralization, and discharging after reaching the standard. According to the method, the pollution problem of the rare earth ore pickling wastewater is solved, resource recycling of multiple valuable components in the wastewater is achieved, particularly, the purity of the obtained calcium fluoride product is higher than 70%, the calcium fluoride product can be used in the fields of metallurgy and the like, and the value of the resource product is greatly improved.

The invention discloses a comprehensive utilization method of high-calcium-magnesium flotation tailings, which realizes the following targets through tailings pretreatment and physical pre-enrichment, heavy product treatment, low-temperature selective activation roasting, dilute acid selective deep leaching, calcium-magnesium separation and product preparation: innovative centrifugal beneficiation and impurity removal-low-temperature roasting-pH regulation and control selective leaching technology; efficient separation of calcium and magnesium and deep removal of zinc and iron are realized, and a foundation is laid for preparation of high-purity products; high-activity magnesium oxide meeting the standards of light calcined magnesium oxide and light magnesium oxide and high-purity and high-whiteness calcium carbonate are prepared; the traditional high-temperature process is replaced by 700-750 DEG C low-temperature roasting, and the diluted acid selective leaching is combined, so that the energy consumption and the acid consumption are greatly reduced, and the process economy is improved; valuable metals such as zinc and iron are synchronously recovered, all-component green utilization of tailings is achieved, and solid waste emission is reduced. Therefore, an efficient, energy-saving, high-value and green technical route is constructed, and efficient separation and high-value conversion of elements such as calcium, magnesium, zinc and iron in the tailings are achieved.

This invention discloses a method for preparing flake magnesium hydroxide to improve the processing performance of LLDPE, comprising the following steps: Step (1) preparing a magnesium chloride solution and an alkaline solution; Step (2) preheating the magnesium chloride solution and the alkaline solution respectively; Step (3) adding the preheated magnesium chloride solution dropwise to the preheated alkaline solution while stirring; Step (4) continuing to stir and keep warm after the dropwise addition to carry out a precipitation reaction, and separating the solid and liquid using a centrifuge after the reaction is completed; Step (5) washing and drying the separated solid to obtain flake magnesium hydroxide that improves the processing performance of LLDPE. This invention can solve the problem that the existing magnesium hydroxide is added to LLDPE as a flame retardant with excessive filler content, which affects its processing and molding performance.

The invention provides a gradient extraction method of produced water associated resources. According to the produced water associated resource gradient extraction method, a pre-separation step is designed, monovalent ions and divalent ions in produced water are preliminarily separated, bromine extraction, strontium extraction and lithium extraction procedures are organically connected in series or in parallel, the strontium and lithium recovery steps can be synchronously carried out, the technological process is simpler, energy consumption is lower, and the production efficiency is improved. And efficient stepped extraction of bromine, lithium, strontium and other elements with the content reaching a certain abundance and exceeding the comprehensive industrial mining grade in the produced water is comprehensively realized in a complete set.

The application relates to the technical field of battery diaphragm, in particular to a battery diaphragm based on magnesium hydroxide and a preparation process thereof. In the coating slurry of the lithium ion battery diaphragm, magnesium hydroxide nanotubes are introduced, COPNA resin is used as an adhesive, 2,2'-diallyl bisphenol A and polysulfone are used to modify the naphthol-based COPNA resin, then 3,3',4,4'-diphenyl tetracarboxylic dianhydride, p-phenylenediamine and 2,2'-di(trifluoromethyl)-4,4'-diaminobiphenyl are used to prepare copolymerized COPNA resin, the COPNA resin still maintains the adhesion at high temperature, the thermal expansion coefficient of the battery diaphragm is improved, the battery diaphragm has a relatively low dielectric constant, the magnesium hydroxide nanotubes are modified, the uniformity of the dispersion of the magnesium hydroxide nanotubes in the coating slurry is improved without adding a dispersant, the diaphragm is homogenized, modified magnesium hydroxide nanotubes are prepared from the magnesium hydroxide nanotubes, hyperbranched tannic acid compounds and aminated metal frameworks, and the safety of the lithium ion battery is improved.

This invention relates to a method for treating and utilizing high magnesium-to-sulfur ratio chlorine-containing wastewater, belonging to the field of environmental protection. This invention utilizes inexpensive calcium alkali to treat high magnesium-to-sulfur ratio chlorine-containing wastewater. During the treatment process, dilute hydrochloric acid is used as a circulation starter. Taking advantage of the difficult-to-remove chloride ions in the wastewater, the calcium alkali is used to generate calcium chloride solution, thereby continuously recovering sulfate ions from the high magnesium-to-sulfur ratio wastewater. Magnesium is converted into magnesium hydroxide, transforming into valuable by-products such as calcium chloride and gypsum, thus achieving resource utilization of waste. This method reduces the environmental impact of wastewater discharge, while also reducing treatment costs and achieving resource recycling. It is highly feasible for existing enterprises and has significant economic, social, and environmental benefits.

The utility model discloses a device for synthesizing a magnesium hydroxide active flame retardant. The device comprises a reaction kettle, a feeding mechanism, an atomizer, a temperature measuring element, a pressure measuring element, a control unit, an aging development tank and the like, the device can simultaneously complete hydration of magnesium oxide and modification of magnesium hydroxide, and realizes crystal form regulation and control based on a mechanical activation technology; the reaction process is controlled by the arranged atomizer to form a saturated vapor pressure condition, so that the hydration process is short in reaction time and high in efficiency; the water adding amount is calculated according to the magnesium oxide content, so that the generated flame retardant product does not need a drying process, and the energy consumption is low; a plurality of hydration activator systems are constructed, and surface modification is performed during hydration reaction, so that the agglomeration phenomenon of magnesium hydroxide particles is overcome, and the flaky active magnesium hydroxide flame retardant with uniform crystal particles is further prepared. The device is reasonable in structural design and high in synthesis reaction efficiency, a hydration process and an activation process are completed at the same time, and continuous circulation production of synthesized magnesium hydroxide is easy to realize.

This invention relates to a method and apparatus for producing magnesium hydroxide aerogel. The method includes: combining the aging stage with its preceding and subsequent stages to form a four-step production method based on the stage characteristics of the magnesium hydroxide aerogel production process and the structural characteristics of the intermediate products at each stage; thereby enabling better utilization of intelligent production control methods, providing a controllable basis for refined production and high product yield and quality; this invention uses intelligent control based on the stage characteristics of the magnesium hydroxide aerogel production process, resulting in lower overall production costs and simpler operation, and the obtained magnesium hydroxide aerogel has a uniform structure, fine pore size, and excellent mechanical properties.