41 results about "Magnesium salts" patented technology

This invention belongs to the technical field of rare metal extraction, specifically relating to a method for defluorinating rare earth ore leaching solutions. The steps are as follows: S1, adding ammonium bicarbonate to the rare earth ore leaching solution, clarifying, and then separating the solid and liquid to obtain filtrate A and filter residue A; S2, adding ammonium bicarbonate to filtrate A, separating the solid and liquid to obtain filtrate B and filter residue B; S3, adding concentrated sulfuric acid to filter residue A, adding filtrate B from step S2, separating the solid and liquid to obtain filtrate C and filter residue C; S4, adding oxalic acid solution to filtrate C, stirring and reacting, clarifying, and then filtering to obtain filtrate D and filter residue D; S5, adding calcium or magnesium salts to filtrate D, separating the solid and liquid to obtain CaF2 or MgF2 filter residue and filtrate E; S6, mixing filtrate B and filtrate E, recovering and continuing to use for leaching rare earth ore, with filter residue B and filter residue D being the defluorinated rare earth products. This method can eliminate fluoride ions at the source, improving the subsequent rare earth metal extraction rate and quality.

The invention relates to a crop nutrition and fortification composition comprising: elemental sulfur in the order of 1% to 90% by weight; one or more water-insoluble or water-soluble iron salts or derivatives or mixtures thereof, wherein the elemental iron content is in the order of 0.1% to 50% by weight; one or more water-insoluble or water-soluble zinc salts or derivatives or mixtures thereof, wherein the elemental zinc content is in the order of 0.1% to 55% by weight; one or more water-insoluble or water-soluble magnesium salts or derivatives or mixtures thereof, wherein the elemental magnesium content is in the order of 0.5% to 50% by weight; one or more water-insoluble or water-soluble boron salts or derivatives or mixtures thereof, wherein the elemental boron content is in the order of 0.01% to 25% by weight; one or more water-insoluble or water-soluble manganese salts or derivatives or mixtures thereof,where the elemental manganese content is in the order of 0.1% to 40% by weight; one or more water-insoluble or water-soluble copper salts or derivatives or mixtures thereof, where the elemental copper content is in the order of 0.1% to 40% by weight; and one or more surfactants in the order of 0.1% to 40% by weight. The composition is presented in the form of water-dispersible granules and liquid suspension, where the compositions have a particle size in the order of 100 nanometers to 5 microns and have a mean particle size diameter distribution of less than 1000 nanometers, and where the total content of the water-soluble salts, derivatives, or mixtures in the composition does not exceed 80% by weight of the total composition. The invention also relates to a process for preparing the nutritional composition and fortifying crops and to a method for treating plants, seeds, crops, plant propagation material,locus, or parts thereof, or soil with the nutritional and fortifying composition of crops.

The invention relates to amino acid modified red-mud-based magnesium-iron-aluminum hydrotalcite and a preparation method and application thereof.The preparation method comprises the following steps that red mud and inorganic acid are mixed and heated and leached under the stirring condition, an obtained leaching product is subjected to solid-liquid separation, and upper-layer acid leaching liquid containing iron and aluminum and residues are obtained; mixing the obtained upper-layer acid leaching solution with amino acid to obtain a mixed solution; adding magnesium salt into the obtained mixed solution, and carrying out coprecipitation reaction to obtain turbid liquid; and centrifuging, washing and drying the obtained turbid liquid to obtain the amino acid modified red mud-based magnesium-iron-aluminum hydrotalcite. Iron and aluminum elements in the red mud are directly extracted, the cost is reduced, and meanwhile the performance and the additional value of the hydrotalcite product prepared from the red mud are remarkably improved; amino acid molecules are introduced, the crystallinity, the specific surface area and the adsorption capacity of the magnesium-iron-aluminum hydrotalcite are improved, a co-precipitation reaction is adopted, the reaction temperature is low, the reaction time is short, and the prepared amino acid modified red-mud-based magnesium-iron-aluminum hydrotalcite can be used for treating phosphorus-containing wastewater.

This application relates to a purification method and apparatus for high-salinity wastewater. The purification method, used in a high-salinity wastewater purification device, includes: monitoring the initial mass fractions of sodium, calcium, and magnesium salts in a container; obtaining target mass fractions of sodium, calcium, and magnesium salts; simultaneously inputting the initial and target mass fractions into a trained purification strategy model, outputting initial control parameters for the purification device; the purification device executing the initial control parameters and acquiring the current control parameters in real time, inputting the current control parameters into the purification strategy model, and the purification strategy model outputting dynamic control parameters to the purification device; the purification device completing the purification of the high-salinity wastewater using the dynamic control parameters. This method allows for the configuration of optimized parameters matching the current water quality for each treatment module at the start of the purification process.

This invention relates to the field of solid waste resource utilization technology, specifically to the in-situ crystallization synthesis of aluminum-based hydrotalcite from solid waste coal gangue, its preparation method, and its application. The preparation method includes: (1) mixing coal gangue with acid and water, stirring at 80-95℃ for 0.5-3h to remove impurities, filtering, washing, and drying to obtain impurity-removed coal gangue; (2) calcining the impurity-removed coal gangue at 600-850℃ for 0.5-5h to obtain calcined coal gangue microspheres; (3) reacting the calcined coal gangue microspheres with calcium / magnesium salts, acid, and water, adjusting the pH to 7-9 with alkali, aging, adding solid phase seed crystals, adjusting the pH to 10-12 with alkali again, crystallizing at 100-150℃ for 12-72h, and then processing to obtain the product. This method uses coal gangue as the aluminum source, improves the crystallinity of aluminum-based hydrotalcite, reduces costs, and realizes solid waste resource utilization. The product can be used for flue gas desulfurization or as an FCC sulfur transfer agent. It has excellent desulfurization and sulfur transfer performance and has broad application prospects.

Divalent ions are extracted from solids by leaching to form a divalent ion-containing solution. The divalent ion-containing solution is subjected to concentration to form a concentrated divalent ion-containing solution. Precipitation of a divalent ion hydroxide salt is induced from the concentrated divalent ion-containing solution. In other cases, the concentrated divalent ion-containing solution is exposed to carbon dioxide to induce precipitation of a divalent ion carbonate salt.

This invention relates to the field of electrochemical technology and discloses a low-temperature fluorine-containing rechargeable magnesium battery electrolyte, comprising a magnesium salt, a main solvent, and a composite additive. The composite additive is a mixed solution of an amine solvent and a fluorinated ether solvent. The concentration of the magnesium salt is 0.1-1.0 mol / L, and the volume ratio of the main solvent to the composite additive is (2-3.3):1. The preparation method includes the following steps: S1: Weigh a certain amount of magnesium salt and dissolve it in the main solvent, stirring for 6-8 hours to form solution A; S2: Slowly add the fluorinated ether solvent to solution A in S1, stirring for 6-8 hours to form solution B; S3: Add the amine solvent to solution B in S2, stirring for 6-8 hours to obtain the low-temperature fluorine-containing rechargeable magnesium battery electrolyte. Its application: The application of a low-temperature fluorine-containing rechargeable magnesium battery electrolyte in rechargeable magnesium batteries. The technical solution of this invention can improve the reversible magnesium deposition and dissolution performance of the electrolyte, and also improve the performance of Mg at low temperatures. 2+ The transport dynamics and ionic conductivity.

This invention relates to the field of chemical pharmaceutical manufacturing technology, and discloses a process for preparing compound sodium bicarbonate to improve acid-base balance. The process includes: preparing an alkaline sodium bicarbonate raw material solution and an acidic raw material solution containing calcium and magnesium salts; dispersing the alkaline raw material solution into droplet clusters using a coaxial gas-liquid atomizing nozzle and a carbon dioxide gas source; allowing the droplet clusters to absorb carbon dioxide and pre-regulate their own hydrogen ion concentration during vertical vector descent; introducing the droplet clusters into the acidic raw material solution to form a homogeneous system and dispensing them; sterilizing the pharmaceutical packaging containers using a terminal overpressure compensation method; and injecting carbon dioxide into the sterilization chamber during the heating stage to establish an external pressure barrier. This invention solves the contradiction of high-concentration calcium and magnesium ions and bicarbonate ions precipitation in a single homogeneous system by blocking the precipitation formation pathway through microscale acidification modification, achieving long-term physical stability and coexistence of the formulation.

To provide a method for reducing precipitation in bacterial fermentation processes. [Solution] A method comprising the steps of a) culturing host cells for bacterial growth in a batch phase using a batch medium, and b) culturing host cells in a fed batch phase to produce a fermentation product using a feed medium, wherein the feed medium and the batch medium are each non-precipitated medium solutions, i) the batch medium comprises calcium salts, magnesium salts, phosphates, and at least one chelating agent which is at least 5 mM citrate and / or citric acid and / or at least 1 mM EDTA, ii) the feed medium contains at least 1 mM of calcium salts which is at least 5 times higher than that of the batch medium, iii) the feed medium contains at least 3 mM of magnesium salts which is at least 2 times higher than that of the batch medium, and iv) the feed medium contains less than 90% of the amount of phosphates contained in the batch medium.

The present disclosure describes stable foamed cleansing compositions. The compositions include: (a) about 8 wt. % to about 40 wt. % of one or more acyl glycinate surfactants, salts thereof, or combinations thereof; (b) one or more magnesium salts providing divalent cations having a charge density of about 40 to about 200 C / mm3 and a water solubility of at least 400 g / L; (c) one or more nonionic emulsifiers having a Hydrophile-Lipophile Balance (HLB) of about 6 or less; (d) one or more water soluble solvents; and (e) water. The compositions typically have a lamellar liquid crystal structure and a specific gravity of about 0.6 to about 0.8 g / mL at 25° C. The stable foamed cleansing compositions are particularly useful in methods for cleansing the body, including the skin and hair.

The present invention provides a solution for immersing a three-dimensional cell culture for transplantation, the solution comprising: one or more divalent metal salts selected from the group consisting of calcium salts, magnesium salts, and the like; and an aqueous solvent, wherein said solution satisfies at least one among the following (a)-(c), and has an osmotic pressure of 150-1,200 mOsm / L. (a) When calcium salts are contained, the content thereof is 5-700 ppm in terms of calcium ions. (b) When magnesium salts are contained, the content thereof is 5-1,000 ppm in terms of magnesium ions. (c) When other divalent metal salts are contained, the content thereof is 0.01-100 ppm in terms of metal ions.

The invention relates to compositions comprising urolithins with active agents, particularly compositions comprising urolithins and agents which promote brain health and / or immune health. The invention also relates to such compositions, for use for the treatment or prevention of diseases, disorders and conditions, and for use in non-therapeutic treatments. Example of agents which promote brain health include brain protective agents (for example phosphatidylserine, phosphatidylcholine and / or choline), agents that enhance neurotransmission (for example a nootropic, for example ergothioneine, huperzine, aGPC, taurine and / or L-theanine), agents that promote neurogenesis (for example selenium); and brain essential nutrients (example Vitamin B6, B9, B12, magnesium salts, folic acid and / or L-methylfolate). Examples of agent which promote immune health include quercetin, Elderberry or an extract thereof; a selenium salt; and / or a zinc salt.

The invention discloses a double-salt electrolyte for a magnesium ion battery and a preparation method of the double-salt electrolyte, the electrolyte comprises magnesium salts and solvents, and the electrolyte comprises at least two different magnesium salts and at least two different organic solvents. Through the synergistic effect of the specific double-salt combination and the double-solvent combination, the problems of electrolyte solvent decomposition and passivation and magnesium metal negative electrode corrosion can be effectively solved, and the coulombic efficiency and cyclic reversibility in the magnesium deposition / stripping process are greatly improved. The preparation method is simple, raw materials are easy to obtain, and the method is suitable for large-scale production.

This invention relates to the field of chemical separation technology, and particularly to a high-efficiency separation device for magnesium salts in the preparation of potassium nitrate. The technical solution includes: a tank and a filtration mechanism disposed within the tank, and further includes a control mechanism, a locking mechanism, a sealing mechanism, and a reset mechanism. The sealing mechanism is installed on the top of the tank. The control mechanism is mechanically connected to the locking mechanism. The locking mechanism cooperates with the filtration mechanism. The reset mechanism is connected to both the filtration mechanism and the sealing mechanism at its two ends. This invention has the advantage of strong process control coordination, effectively solving the problem of unstable product purity caused by asynchronous separation processes in existing technologies.

This invention relates to a crop nutrition and fortification composition comprising: elemental sulfur, ranging from 1 wt% to 90 wt%; one or more water-insoluble or water-soluble iron salts or derivatives or mixtures thereof, wherein the elemental iron content ranges from 0.1 wt% to 50 wt%; one or more water-insoluble or water-soluble zinc salts or derivatives or mixtures thereof, wherein the elemental zinc content ranges from 0.1 wt% to 55 wt%; one or more water-insoluble or water-soluble magnesium salts or derivatives or mixtures thereof, wherein the elemental magnesium content ranges from 0.5 wt% to 50 wt%; one or more water-insoluble or water-soluble boron salts or derivatives or mixtures thereof, wherein the elemental boron content ranges from 0.01 wt% to 25 wt%; one or more water-insoluble or water-soluble manganese salts or derivatives or mixtures thereof, wherein the elemental manganese content ranges from 0.1 wt% to 40 wt%; one or more water-insoluble or water-soluble copper salts or derivatives or mixtures thereof, wherein the elemental copper content ranges from 0.1 wt% to 40 wt%; and one or more surfactants, ranging from 0.1 wt% to 40 wt%. The composition is in the form of water-dispersible granules and liquid suspensions, wherein the particle size range of the composition is 100 nanometers to 5 micrometers and the average particle size distribution is less than 1000 nanometers, and wherein the total content of the water-soluble salts, derivatives, or mixtures in the composition does not exceed 80% of the total weight of the composition. The invention also relates to methods for preparing the crop nutrient and fortification compositions, and methods for treating plants, seeds, crops, plant propagation materials, their sites or parts, or soil with the crop nutrient and fortification compositions.

This invention provides a desulfurizing agent, its preparation method, and its application in flue gas desulfurization. The preparation method includes: mixing a mixture A containing magnesium salts, aluminum salts, and a precipitant with a mixture B containing a gemini-type anionic surfactant at a molar concentration of 0.1–0.5 mol / L, followed by a hydrothermal reaction; then, the precipitate obtained from the hydrothermal reaction is sequentially washed, dried, ground, calcined once, shaped, and calcined a second time to obtain the desulfurizing agent. This invention utilizes the high crystallinity and easily controllable morphology of the hydrotalcite-like compound prepared using the gemini-type anionic surfactant, thereby effectively controlling the microstructure and performance of the desulfurizing agent, improving the dispersion of active metals, and significantly enhancing the desulfurization activity of the desulfurizing agent.

The present invention relates to an arrangement for the kinetic separation of magnesium salts from magnesium- and lithium-containing brines by means of multi-channel nozzles, and to the use of such an arrangement. Such separation is necessary because lithium can only be recovered economically from brines if there is a favourable magnesium-to-lithium ratio in the mixture. This means that the content of magnesium salts must be below a certain threshold concentration relative to the lithium content. In order to achieve this ratio even in the case of brines from salt lakes having a highly unfavourable magnesium-to-lithium ratio, it is necessary to remove as much magnesium as possible from the mixture, whilst simultaneously minimising the associated losses of lithium. According to the invention, nozzles having concentric liquid streams which permit contact times between the liquid streams in the range of a few milliseconds promote a faster reaction. When there is co-precipitation of lithium and magnesium, the faster reaction is the precipitation of magnesium. Precipitation using nozzles allows the magnesium to be selectively precipitated and removed from the system as a solid, whilst the majority of the lithium remains in the liquid.

The present invention is directed to a composition for discoloring keratin fibers dyed with oxidative dyes and / or direct dyes, preferably human keratin fibers, more preferably human hair, comprising: a) one or more organic sulfinic acid(s), and / or their salt(s), and / or their mixtures, one or more compounds selected from the following groups: b1) one or more inorganic thickening agent(s), selected from clay minerals, b2) one or more salt(s) of a divalent or trivalent metal cation(s), selected from zinc salts, magnesium salts, iron salts, copper salts, manganese salts, cobalt salts, and aluminium salts, and b3) one or more oxide(s) of a divalent or trivalent metal cation(s), zinc oxides, magnesium oxides, iron oxides, copper oxides, manganese oxides, cobalt oxides, and aluminium oxides, and / or their mixtures.

CLEANING COMPOSITION IN STABLE FOAM FORM AND METHODS OF USE This disclosure relates to cleaning compositions in stable foam form. The compositions include: (a) approximately 8% to approximately 40% by weight of one or more acylglycinate surfactants, their salts, or combinations thereof; (b) one or more magnesium salts providing divalent cations with a charge density of approximately 40 to approximately 200 C / mm³ and a water solubility of at least 400 g / L; (c) one or more nonionic emulsifiers with a hydrophilic-lipophilic balance (HLB) of approximately 6 or less; (d) one or more water-soluble solvents; and (e) water. The compositions typically exhibit a lamellar liquid crystal structure and a specific gravity of approximately 0.6 to approximately 0.8 g / mL at 25°C.Cleansing compositions in the form of a stable foam are particularly useful in body cleansing processes, especially for skin and hair. Figure for the abbreviation: none.

The invention relates to a device for kinetic separation of magnesium salts from brine containing magnesium and lithium by means of a multi-channel nozzle. This separation must be carried out because lithium can be extracted economically from brine only when the magnesium / lithium ratio in the mixture reaches a certain extent. This means that the content of magnesium salts must be below a certain concentration limit for lithium. In order to achieve this also in salt lake brine where the magnesium / lithium ratio is very unfavorable, the magnesium must be removed from the mixture as much as possible while the resulting loss of lithium is limited to a minimum. The nozzle according to the invention has concentric liquid flows which contact within a range of milliseconds, thus promoting a faster reaction. This is the precipitation reaction of magnesium when lithium and magnesium are precipitated simultaneously. By means of the nozzle precipitation, magnesium is precipitated selectively and removed from the system as a solid, while most of the lithium remains in the liquid.

Pharmaceutical compositions of alpha-lipoic acid and / or methylsulfonylmethane (MSM) and magnesium salts, useful for the treatment, prevention, or reduction of the severity of viral infections and / or skin diseases, are provided herein. Methods for preparing the pharmaceutical compositions and methods for using the pharmaceutical compositions in therapeutic treatments are also provided.

FIELD: mining.SUBSTANCE: proposed invention relates to combined methods of underground extraction of potassium and potassium-magnesium salts. The combined method of underground mining of potassium and potassium-magnesium salts is characterized by the fact that two vertical mine shafts with a diameter of up to 6 m are constructed, one of which is a skip-cage with injection and production pipelines located in it, and the other is a ventilation one, then a shaft yard is constructed comprising many mine workings and located in stable layers of cap rock salt in the roof of the productive layer 10-80 m above the productive layer of potassium and potassium-magnesium salts, preparing for cleaning excavation, including drilling a grid of boreholes from the mine workings vertically downwards into the productive layer of potassium and potassium-magnesium salts, pumping water – a solvent and diesel fuel – a non-solvent into the productive layer, creating chambers for underground dissolution of salts, organizing the dissolution of salts in the above chambers, cleaning excavation, including pumping out saturated brines from the underground salt dissolution chambers through brine pipelines to the shaft yard and hydraulic lifting by a pumping station through the production pipelines of the vertical shaft of the mine to the daylight surface to the concentrator, and the subsequent hydraulic lowering of the backfill mixture, which is the tailings of the concentrator, through the injection pipelines of the vertical shaft and through the network of mine workings into the empty underground salt dissolution chambers for their complete backfill.EFFECT: intensification of production and simplification of the implementation of the method of underground production of potassium and potassium-magnesium salts.1 cl, 3 dwg, 1 tbl

This invention belongs to the field of industrial water treatment technology, specifically relating to a system and method for simultaneous hardening and silica removal from high-salt, high-calcium wastewater. It includes a primary reaction unit, a primary sedimentation unit or a primary flocculation sedimentation unit, a secondary reaction unit, a secondary flocculation sedimentation unit, and a neutralization unit connected sequentially along the water flow direction. The primary reaction unit is a simultaneous hardening and silica removal unit using sodium sulfate / sodium aluminate, sodium sulfate / magnesium salts, or sodium sulfate. The secondary reaction unit is a dual-alkali hardening removal unit or a dual-alkali / magnesium salt simultaneous hardening and silica removal unit. This invention employs a two-stage synergistic hardening removal method of "sodium sulfate + dual-alkali hardening removal," combined with a silica removal process, to simultaneously achieve silica and hardening removal. By reducing the concentration of hardness ions and silica in the water in stages and in a targeted manner, it gradually controls them to the low levels required for deep treatment, thereby simultaneously shortening the process flow, reducing the footprint, and lowering the reagent costs during operation.

This document describes a method for reducing the corrosivity of certain magnesium salts. The salt product resulting from the method exhibits reduced corrosion of steels that come into contact with the salt relative to salt compositions that are not so treated. This makes such treated salts more efficient coolant salts as they will require less equipment replacement over time. The method uses magnesium metal to reduce unwanted impurities in the salts the reduced impurities are then removed as either gas or precipitate from the now purified salt. Without being bound to one particular theory, it is believed that the reduction of the level of impurities in the salt results in a salt with substantially reduced corrosiveness to steel.

The present invention is directed to a composition for discoloring keratin fibers dyed with oxidative dyes and / or direct dyes, preferably human keratin fibers, more preferably human hair, comprising: a) one or more organic sulfinic acid(s), and / or their salt(s), and / or their mixtures, one or more compounds selected from the following groups: b1) one or more inorganic thickening agent(s), selected from clay minerals, b2) one or more salt(s) of a divalent or trivalent metal cation(s), selected from zinc salts, magnesium salts, iron salts, copper salts, manganese salts, cobalt salts, and aluminium salts, and b3) one or more oxide(s) of a divalent or trivalent metal cation(s), zinc oxides, magnesium oxides, iron oxides, copper oxides, manganese oxides, cobalt oxides, and aluminium oxides, and / or their mixtures.

To provide an electrolyte having stretchability and softness, a secondary battery, and a composite material, which can prevent a decrease in electrolyte durability. The problem is solved by an electrolyte containing: a polymer in which a monomer represented by the following formula (1) is polymerized; a glyme represented by the following formula (2); and at least one salt selected from the group consisting of lithium salts, sodium salts, magnesium salts, potassium salts, and calcium salts; in formula (1), R1 and R2 each independently represent H or a linear, branched, or cyclic alkyl group having 1 to 20 carbon atoms, X1 and X2 each independently represent O or NH, when X2 is O, n represents an average integer of 0 to 30, and when X2 is NH, n represents an average integer of 1 to 30; in formula (2), R3 and R4 each independently represent an alkyl group having 1 to 4 carbon atoms, and m represents an integer of 1 to 4.

Disclosed are methods of making delmopinol and delmopinol salts (e.g., delmopinol metal salts, such as, for example, delmopinol calcium salts, delmopinol sodium salts, delmopinol potassium salts, and / or delmopinol magnesium salts). Delmopinol has the following structure:and a salt of delmopinol has the following structure:

To provide an apremilast solid preparation suppressed in increase of related substances with time and excellent in stability.SOLUTION: The apremilast solid preparation contains apremilast and an additive, wherein the additive contains at least one selected from the group consisting of low-substituted hydroxypropyl cellulose, crospovidone, glycerin fatty acid ester, hydrous silicon dioxide, and light anhydrous silicic acid. It is preferable that the additive does not contain at least one selected from the group consisting of a sodium salt, a calcium salt, and a magnesium salt.SELECTED DRAWING: None

This invention relates to the field of plant cultivation technology, and more particularly to a soilless cultivation nutrient solution and its application. The nutrient solution comprises calcium salts, potassium salts, chelated iron, magnesium salts, manganese salts, zinc salts, copper salts, molybdenum salts, and borax; based on the molar amount of metal cations, the molar ratio of potassium, calcium, magnesium, iron, manganese, boron, zinc, copper, and molybdenum is (9953–19907):(5998–17343):(3381–4690):(22–59):(25–43):(23–56):(16–24):(1–3):(1–2). Based on in-depth research into the different nutritional requirements of strawberries at different growth stages, this invention yields a nutrient solution suitable for specific growth stages of strawberries. Cultivating strawberries using this nutrient solution composition can effectively improve strawberry yield and quality, and is of great significance in the strawberry production field.

This invention belongs to the field of inorganic non-metallic materials technology and provides a method for the directional digestion of natural hydraulic lime induced by magnesium salts. This method solves problems such as violent digestion reactions, coarse calcium hydroxide crystals, delayed hydration of magnesium oxide, and uneven calcium carbonate precipitation structure in existing natural hydraulic lime digestion processes. In this invention, the calcined product of natural hydraulic lime is mixed with a magnesium salt digestion solution and then sequentially digested and aged to obtain the directionally digested product of natural hydraulic lime, thus completing the treatment. By introducing magnesium salts into the natural hydraulic lime digestion process and employing a spray-type digestion method to regulate the ionic environment of the digestion system, this invention achieves stable control of the digestion reaction process, effectively reducing the problems of violent exothermic reactions and localized over-hydration in traditional digestion processes. This allows for the directional control of calcium hydroxide crystal growth and subsequent calcium carbonate precipitation.