66 results about "Magnesium salts" patented technology

The invention discloses a special phosphorus removal agent for deep phosphorus removal and a preparation method and application thereof, and relates to the field of phosphorus removal agents and preparation methods thereof.The phosphorus removal agent is prepared from a porous precursor, an activating agent and a dispersing agent, and the porous precursor comprises at least one of aluminum oxide, iron oxide, calcium oxide and magnesium oxide; the activating agent comprises at least one of lanthanum salt, cerium salt, zircon salt, magnesium salt and ferric salt. By optimizing the composition of the porous precursor and activating treatment, the phosphorus adsorption capacity is remarkably improved, the phosphorus removal agent also plays a role in micro-flocculation in the process of mixed adsorption with sewage, a wet adding mode is adopted, the adding amount can be flexibly adjusted according to the phosphorus concentration condition of inlet water and outlet water, and the phosphorus removal efficiency is improved. The phosphorus removal agent can reduce the total phosphorus concentration in tail water of a sewage treatment plant to 0.5 mg / L or below.

The application discloses a defluorination agent for fluorine-containing wastewater treatment and a preparation method thereof. The defluorination agent is prepared from chitosan as a biomolecular skeleton and magnesium salt, titanium salt, zirconium salt, aluminum salt, iron salt, rare earth material and organic material as blending raw materials. The mass ratio of the magnesium salt, the titanium salt, the zirconium salt, the aluminum salt, the iron salt, the rare earth material, the organic material and the chitosan is 1-30:1-30:2-20:2-10:2-10:20-50:2-10:1-10. The defluorination agent is prepared from the magnesium salt, the titanium salt, the zirconium salt and the organic material in addition to the existing composite defluorination agent, and has the characteristics of good stability, wide application range and large-scale application.

The invention relates to the technical field of solid waste resource utilization, in particular to aluminum-based hydrotalcite synthesized through solid waste coal gangue in-situ crystallization and a preparation method and application of the aluminum-based hydrotalcite. The preparation method comprises the following steps: (1) mixing coal gangue with acid and water, stirring at 80-95 DEG C for 0.5-3 hours to remove impurities, filtering, washing and drying to obtain impurity-removed coal gangue; (2) roasting the impurity-removed coal gangue at 600-850 DEG C for 0.5-5 hours to obtain roasted coal gangue microspheres; and (3) mixing and reacting the roasted coal gangue microspheres with calcium salt / magnesium salt, acid and water, dripping alkali to adjust the pH value to be 7-9, aging, strengthening the phase seed crystal, dripping alkali to adjust the pH value to be 10-12, crystallizing at 100-150 DEG C for 12-72 hours, and post-treating to obtain the product. According to the method, coal gangue is used as an aluminum source, the crystallinity of aluminum-based hydrotalcite is improved, the cost is reduced, and solid waste recycling is achieved. The product can be used for flue gas desulfurization or used as an FCC sulfur transfer agent, has excellent desulfurization and sulfur transfer performance, and has a wide application prospect.

The invention relates to a liquid detergent composition comprising a first surfactant selected from fatty alcohol ether sulfates, a second surfactant selected from betaines, optionally at least one solvent selected from ethanol, propanol, isopropanol, ethylene glycol, butyl glycol, propylene glycol, polypropylene glycol, alcoholamine, monoethanolamine, glycerol and mixtures thereof, wherein the salt concentration in the composition is about 0.2 to about 10 wt.-% and wherein the salt is selected from the group consisting of sodium salts such as sodium chloride, sodium sulfate, sodium formate, sodium acetate or sodium propionate, potassium salts such as potassium chloride, potassium sulfate, potassium formate, potassium acetate or potassium propionate, magnesium salts such as magnesium chloride, magnesium sulfate, magnesium formate, magnesium acetate or magnesium propionate, and calcium salts such as calcium chloride, calcium sulfate, calcium formate, calcium acetate or calcium propionate, and mixtures thereof, and wherein the composition is a concentrate that can be diluted with water while maintaining or increasing the viscosity.The present invention further relates to the use of such a cleaning composition for cleaning hard surfaces, in particular dishes, and to a process for preparing a cleaning composition, the process comprising diluting the concentrated liquid cleaning composition with water.

The present application provides a method for removing impurities from multi-source photovoltaic wastewater and synergistically preparing fluorine products in a cascade manner, which realizes deep removal of fluoride and recovery of fluorine resources through a three-stage treatment system. The primary treatment uses concentrated alkaline wastewater to react with magnesium salts, effectively removes silicates through flocculation and precipitation, and recovers magnesium silicate products. In the secondary treatment, silicon-containing concentrated acid wastewater reacts with barium salts to remove silicate ions and is then mixed with the primary waste liquid. After adjusting to the optimal pH, aluminum salts are added for coagulation and precipitation to recover cryolite. The tertiary treatment uses crystal seeds to induce calcium fluoride crystallization, further reducing the fluoride ion concentration to below 8 mg / L to meet wastewater discharge standards, and at the same time recovering calcium fluoride products; the entire process is simple, low-cost, and the recovered product is of high quality, in line with national standards, and has significant economic and environmental benefits. In addition, the present application realizes "waste treatment with waste", reduces wastewater treatment costs, and meets the requirements of sustainable development.

The invention provides a method for separating and obtaining a vanadium product from tailings by utilizing microorganisms, and aims to solve the problems that vanadium is generally extracted by roasting vanadium slag externally matched with sodium salt, calcium salt, magnesium salt and manganese salt, the generated tailings are complex in component and difficult to treat, and a biological leaching method can solve the problems. The method for extracting the vanadium from the tailings through the biological leaching method is an environment-friendly and economical method, and the method mainly depends on the metabolic activity of microorganisms to oxidize and dissolve vanadium compounds; efficient and low-cost vanadium recycling can be realized by optimizing selection of microorganisms, controlling reaction conditions and improving treatment steps of leachate; and the current situations of tailing accumulation and resource waste are solved.

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.

The present invention provides an electrolyte for a rechargeable magnesium battery with a wide potential window and a preparation method thereof. The electrolyte of the present invention uses two types of organic magnesium salts (Type I and Type II), two types of organic solvents (Type A and Type B), and an additive as raw materials. The preparation method is that under an inert atmosphere at room temperature, the Type I organic magnesium salt in the above raw materials is added to the Type A organic solvent and stirred for 8 to 12 hours, then the Type B organic solvent is added thereto and stirred for 2 to 4 hours, then the Type II organic magnesium salt is added and stirred for 20 to 24 hours, and finally the additive is added and stirred for 1 to 3 hours to obtain the electrolyte of the present invention. The electrolyte of the present invention has a large conductivity, a small overpotential, and a high magnesium deposition-dissolution efficiency. In particular, it has a wide electrochemical window and an oxidation stability window as high as more than 4V (vs. Mg / Mg<supgt;2+< / supgt>). Therefore, it is suitable for matching high-voltage cathode materials to form high-performance rechargeable magnesium batteries and has important popularization and application value.

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.

The present invention discloses a new process for preparing whiskers and recovering magnesium salts by using white mud, which includes: after separating white mud by sulfuric acid leaching, obtaining high-whiteness gypsum and magnesium sulfate solution containing calcium ions, then subjecting the magnesium sulfate solution containing calcium ions to decalcification treatment with carbonate to obtain high-purity magnesium sulfate solution; preparing high-purity magnesium sulfate monohydrate from the magnesium sulfate solution by a thermal crystallization method, preparing magnesium carbonate or magnesium bicarbonate by a carbonization process, and preparing high-purity magnesium oxide after calcination; preparing high-whiteness nanoscale calcium sulfate fibers and high-strength gypsum products from the high-whiteness gypsum by a hydrothermal method. The present invention not only turns waste into treasure, but also realizes the resource utilization, clean utilization and high-value utilization of white mud in the rare earth production industry.

The invention relates to the technical field of hydrometallurgy, in particular to a method for preparing high-purity magnesium sulfate and enriching nickel (II) ions from nickel-containing serpentine. The method mainly comprises the steps of acidolysis of serpentine ore powder, separation of non-magnesium metal ions and magnesium salt in acidolysis liquid, preparation of high-purity magnesium sulfate, enrichment of nickel ions and the like, and is characterized in that serpentine is subjected to thorough acidolysis, and nickel and magnesium in ore are completely released; after nickel ions in the high-magnesium low-nickel salt solution obtained through acidolysis are chelated with a complexing agent, magnesium salt solids are separated from the nickel ions through a specific transforming agent; completely converting magnesium ions in the solution into solid by using a precipitant, and continuously recovering ammonium salt in the solution by using a solution crystallization method; and finally, the residual nickel-rich solution is concentrated / dried / calcined, and high-grade nickel fine powder is obtained. By the adoption of the method, nickel and magnesium elements can be completely separated, full recycling is achieved, the process is simple, and the method is environmentally friendly.

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.

A fish feed useful in a method for smoltification of Salmonidae. The feed contains protein, fat, carbohydrates, vitamins, minerals and water, and in addition comprises sodium salts (Na+) from 10 -100 g / kg by weight, polyvalent cation receptor modulator (PVCR) from 1-10 g / kg by weight, magnesium salts (Mg2+) from 0.1-100 g / kg by weight, and calcium salts (Ca2+) from 0.1-100 g / kg by weight.

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.

This invention discloses a method for recycling magnesium salts in the nickel-cobalt industry, relating to the treatment of wastewater containing metal ions. The method involves reacting magnesium sulfate wastewater generated after multiple extractions with medium and strong alkalis, adding trace amounts of surface treatment agents, and generating a mixed precipitate of magnesium hydroxide and sulfate. Part of the aqueous phase is filtered out using a filter press and returned to the raw material slurry. The remaining mixed slurry is pumped into a high-pressure reactor, and carbon dioxide is introduced into the reactor while maintaining a certain pressure. Simultaneously, a composite nanocatalyst, La-doped Fe3O4@SiO2, is introduced to prepare a mixed slurry of soluble magnesium bicarbonate and insoluble sulfate. After rapid filtration, the synthesized magnesium bicarbonate filtrate is used to replace the liquid alkali and saponify the blank organic phase. The carbon dioxide generated during the saponification reaction is recycled. The saponified organic phase is then sent to different extraction production lines for purification and separation of the multi-metal mixed liquid, achieving a virtuous cycle in the production system.

The invention discloses a magnesium springback inhibitor for sprayed concrete as well as a preparation method and application of the magnesium springback inhibitor, and belongs to the technical field of concrete admixtures. The magnesium springback inhibitor for sprayed concrete is prepared by taking ternary magnesium calcined minerals and inorganic coagulation-promoting magnesium salt as core samples and alkanolamine ester compounds as a shell through a physical coating process, the magnesium springback inhibitor can be independently used for sprayed concrete and can also be jointly used for sprayed concrete with mineral admixtures and / or rheological modification components, springback materials of the sprayed concrete can be fully recycled, springback loss of the sprayed concrete in the spraying process is remarkably reduced, the middle-later-stage volume shrinkage of the sprayed concrete material is reduced, and the service life of the sprayed concrete is prolonged. And the preparation process is green and low-carbon, and the performance adaptability is wide.

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.

The invention discloses a waste lithium battery pyrolysis tail gas purifying agent and a preparation method and application thereof. The waste lithium battery pyrolysis tail gas purifying agent comprises a salt compound, clay minerals and sodium alkyl benzene sulfonate, wherein the salt compound comprises calcium salt or magnesium salt; the purifying agent comprises the following components in percentage by mass: 20-75% of salt compound; 20%-60% of clay mineral; and 5%-20% of sodium alkyl benzene sulfonate. According to the purifying agent, volatile organic compounds such as carbonic esters, hydrocarbons and alcohols in the waste lithium battery pyrolysis tail gas can be effectively removed by adjusting the dosage and proportion of all the components of the purifying agent, acid fluorine-phosphorus gas can be removed, the purpose of short-range treatment of the pyrolysis tail gas is achieved, the purifying effect of the purifying agent for treating the pyrolysis tail gas is good, and the purifying agent is suitable for industrial production. The preparation method is simple, and the compound raw materials for preparing the purifying agent are cheap and easy to obtain.

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.