65 results about "Calcium magnesium" patented technology

The invention relates to a surfactant oil displacement composition suitable for a high-temperature and high-salt oil reservoir and application of the surfactant oil displacement composition. The surfactant oil displacement composition comprises the following components in percentage by mass: 0.10-0.50 wt% of a nitrogen-containing surfactant, less than 0.12 wt% of a sulfur-containing surfactant or hydrophobic salt and the balance of water. The surfactant oil displacement composition stably exists under the conditions that the temperature is 70-130 DEG C, the total mineralization degree of formation water is (10-25) * 10 < 4 > mg / L, and the concentration of calcium and magnesium ions is (1-2.5) * 10 < 4 > mg / L, and is kept clear without forming precipitates. The interfacial tension of the surfactant oil displacement composition can reach 10 <-2 > mN / m order of magnitude under high-temperature and high-salt conditions, the oil washing efficiency can reach 80% or above, and the surfactant oil displacement composition is suitable for improving the recovery efficiency of a high-temperature and high-salt oil reservoir in tertiary oil recovery.

The invention provides an organic-inorganic composite conditioner for improving a soil structure. Comprising the following raw materials in parts by mass: 100-150 parts of calcium, 20-50 parts of magnesium, 10-20 parts of polyglutamic acid, 0.5-2 parts of zinc, 2-4 parts of boron, 2-4 parts of iron, 100-150 parts of organic nitrogen, 150-200 parts of composite organic natural polypeptide amino acid, 50-70 parts of seaweed boron molybdenum, 50-80 parts of phosphorus calcium zinc liquid, 20-50 parts of seaweed calcium magnesium boron iron zinc and 100-120 parts of a plant nutrition preparation. The fertilizer is prepared from the following raw materials in parts by weight: 10-15 parts of high phosphorus and high potassium, 150-200 parts of organic waste compost, 50-80 parts of a synergist and 50-100 parts of a functional microbial agent. Through a unique chelation technology, polyglutamic acid and calcium and magnesium ions are fully fused to form an efficient medium trace element water-soluble fertilizer, calcium and magnesium are directly absorbed by a root system after flushing application, the calcium utilization rate is improved by 50% or above, and due to the fact that polyglutamic acid carries strong negative charges, fertilizer loss caused by rainwater leaching is effectively reduced, and the yield of the fertilizer is improved. And the water-retaining and fertilizer-retaining functions are more obvious when the fertilizer is used in sandy loam.

The invention relates to the technical field of salt mine collection, in particular to a stoping and filling device of a salt mine well and an anti-accumulation method of the stoping and filling device, the device comprises a butt joint well group, and the butt joint well group comprises a mud inlet well and a brine outlet well and is used for achieving backfilling of calcium magnesium mud and stoping of brine; the well logging system is used for detecting the shaft condition and the position of a cavity top plate; the pipe cutting equipment is used for cutting off the sleeve at a preset position below the top plate of the dissolving cavity; the sonar cavity measuring equipment is used for measuring the spatial form of the dissolving cavity; scale on the inner wall of the casing pipe is removed through a high-pressure water nozzle and steel wire brush composite cleaning technology, and pipe cutting position control accurate to the millimeter level is matched, so that a slurry conveying channel is unobstructed, the problem of pipeline blockage is solved, and production halt loss caused by blockage is avoided.

Disclosed is a cement admixture which contains a calcium carbonate-containing powder and one or more non-hydraulic compounds that are selected from the group consisting of γ-2CaO∙SiO2, 3CaO∙2SiO2, α-CaO∙SiO2, and calcium magnesium silicate.

The invention discloses a hydrothermal synthesis method of magnesium-rich silicate and application of the magnesium-rich silicate in acid soil improvement, and belongs to the technical field of soil improvement. According to the method, magnesium chloride, calcium chloride and sodium silicate serve as raw materials, calcium magnesium silicate gel is generated through a hydrothermal reaction, a high-purity product is obtained through freeze drying after impurities are removed through multiple times of washing, and a surfactant can be added to optimize the material morphology and the specific surface area and improve the acid soil effect. The obtained material is hydroxyl calcium magnesium silicate with the molar ratio of calcium to magnesium being (1: 3)-(1: 5), and has a porous nanosheet structure. According to the invention, silicate is released to neutralize the acidity of soil, calcium and magnesium ions are released to fix exchangeable aluminum ions in acid soil, magnesium ions and silicate are released to improve the microbial activity of soil and promote the formation of a soil aggregate structure, and the problems of easy acid regurgitation, soil hardening and the like of a traditional lime acid soil improvement material are solved; the soil conditioner is suitable for rapid acid reduction and long-acting acid control of strongly acidic soil (the pH is more than or equal to 4.0 and less than or equal to 5.0).

The utility model belongs to the field of anti-scale and anti-corrosion pipelines, and particularly relates to a special anti-scale and anti-corrosion pipeline suitable for a high-concentration calcium magnesium salt ion solution, which comprises an anti-scale and anti-scale water treater, a column body of the anti-scale and anti-scale water treater is movably connected with a male connecting ring, the end part of the male connecting ring is clamped with a female connecting ring, and the female connecting ring is connected with the column body of the anti-scale and anti-scale water treater. A connecting column is fixedly connected to the frame body of the male connecting ring, an adjusting piece is fixedly connected to the end of the connecting column, a connecting rod is fixedly connected to the middle of the adjusting piece, and a fixing frame is fixedly connected to the end of the connecting rod. And when the scale prevention and removal type water treater needs to be obliquely mounted, the adjusting piece can be flexibly adjusted to be in an inclined state so as to adapt to the mounting of the scale prevention and removal type water treater.

The present application relates to the technical field of fertilizer, and especially relates to a biological coupling powder rich in mineral nutrition and a preparation method thereof, which comprises the following steps: activating calcium magnesium potassium sulfate to obtain activated calcium magnesium potassium sulfate, and determining whether the activation is qualified; in response to the qualified activation, mixing the activated calcium magnesium potassium sulfate with organic raw materials, determining whether the affinity and dissociation of the activated calcium magnesium potassium sulfate and the organic raw materials meet the standard based on the increment of water-soluble calcium and the pH change rate; in response to the qualified affinity and dissociation, determining the balance treatment of the mixture, and obtaining fermentation substrate; spraying a compound microbial inoculum to the fermentation substrate in a preset stage for solid-state aerobic fermentation treatment, determining the addition of the compound microbial inoculum based on the change rate of water-soluble calcium content, and obtaining fermentation product; aging the fermentation product, determining whether to extend the aging time based on the humification coefficient, and drying the fermentation product to obtain the biological coupling powder. The present application improves the biological coupling property of mineral nutrition and organic raw materials.

The invention relates to talaromyces pseudomonas hzt-3'as well as a preparation method and application of the talaromyces pseudomonas hzt-3 ', and belongs to the technical field of application of microorganisms. The strain is preserved in the China Center for Type Culture Collection, the preservation number of the strain is CCTCC NO: M 20251797, and the strain is classified and named as (Talaromyces pseudomonas hzt-3 '). The method comprises the following steps: collecting moss and vegetation soil samples from basalt, diabase and dolomite; diluting bacterial colonies in the sample, and separating and purifying the bacterial strains by using a Czapek culture medium; anorthite and serpentine are used as inorganic salt sources for strain screening, and strains which grow stably and have a good leaching effect on calcium magnesium silicate minerals are obtained; the strain is applied to efficient leaching of anorthite, serpentine and wollastonite, and compared with a sterile control group, the effect of improving the leaching rate of calcium and magnesium ions is remarkable. The method solves the problem that the reaction rate of mineral sequestration carbon dioxide is slow due to the fact that ions in natural silicate minerals are difficult to leach, and has great significance.

A water hardness test paper includes a carrier and a water hardness detection substance provided on the carrier, wherein the water hardness detection substance includes a color developer which includes one or more of calcium magnesium reagent, chrome black T, calcium carboxylic acid, azo arsine 1, and azo arsine 3.

The invention relates to the technical field of tobacco, in particular to a nicotine product and a preparation method thereof. The nicotine product comprises porous ceramic particles and nicotine or a salt thereof loaded on the porous ceramic particles, the porous ceramic particles are made of one or more of calcium magnesium silicate and aluminum magnesium silicate; the porous ceramic particles have first gradient pores, second gradient pores, and third gradient pores. The nicotine loading rate is high.

The invention belongs to hydrogenation-rich modified materials, and particularly relates to a hydrogenation-rich modified material as well as a preparation method and a use process thereof. The catalyst is prepared from the following raw materials in parts by weight: 10-60 parts of polyethylene glycol and 40-90 parts of a hydrogen source, the hydrogen source is one or a combination of more of calcium hydride, magnesium hydride, calcium magnesium hydride, elemental calcium and calcium magnesium alloy, or platinum-loaded titanium dioxide. The hydrogenation-rich modified material can modify an additive, the preparation method is convenient to operate, the use mode is simple and efficient, the utilization rate is high, the hydrogenation-rich modified material can be applied to the fields of medicine, food and cosmetics, the use conditions of inherent food additives, cosmetic additives and the like are not affected, and the modified additive can produce hydrogen after being used in oral administration, smearing and other modes; the product is easy to absorb, has no irritation to intestinal tracts, has no chemical residues influencing human health, and has strong practicability.

The present application relates to big data analysis technical field, specifically to a kind of mineral fertilizer production quality control method based on big data, comprising the following steps: reading phosphorus ore diphosphorus pentoxide content and potassium ore impurity calcium magnesium content, generating incoming material quality correlation coefficient set, the numerical values in the incoming material quality correlation coefficient set are weighted combination mapping, and incoming material comprehensive characteristic parameter matrix is generated.The present application introduces finished product granulation pulverization rate, acid-base neutralization consumption determination value into the inversion process of significant dynamic threshold, so that front-end raw material fluctuation and middle section operation fluctuation can accept the reverse check of end quality boundary, thereby obtaining stronger quality causal through capability, abnormal positioning capability and interception specificity, which can not only compress the path length of raw material difference transmission to finished product defect, but also reduce the misjudgment risk caused by empirical threshold, and can also enhance the identification accuracy of batch fluctuation, working condition drift and quality instability precursor.

The application discloses a method for extracting effective components from corn soaking water, which comprises the following steps: adsorbing phytic acid in the corn soaking water through a resin, obtaining effluent, removing zein and calcium magnesium salt from the effluent to obtain a treatment liquid, filtering and concentrating the treatment liquid through a reverse osmosis membrane to obtain a first cut-off liquid, adding hydrochloric acid into the first cut-off liquid to adjust the pH to 2.0-2.5, vacuum concentrating until crystals are precipitated, closing the vacuum and cooling to crystallize to obtain a KCl crude product and a first filtrate, and distilling the first filtrate to obtain a lactic acid solution and a distillation dry substance. The method effectively separates potassium chloride crude product, the lactic acid solution and the distillation dry substance from the corn soaking water, fully extracts, separates and utilizes the effective components in the corn soaking water, and improves the comprehensive economic benefits of a corn processing industrial chain.

The utility model discloses a reverse pole cathode self -cleaning type calcium magnesium scale layer removal device, including treatment pool and device bottom, the inside of treatment pool includes filter tank and descaling pool, be provided with cathode plate in the inside of descaling pool, one side of cathode plate is provided with anode plate, is provided with cleaning mechanism between cathode plate and anode plate, one side of cleaning mechanism is connected with the connecting support, the cleaning mechanism includes the cleaning scraper of swing joint in the inside of cleaning mechanism, the both sides swing joint of cleaning scraper have the cleaning push -plate, the rotating rod is passed through and is arranged to cleaning mechanism, one end of rotating rod is connected with synchronous mechanism, one side of treatment pool is provided with control panel. The utility model discloses through setting rotating rod can through drive gear and drive cleaning push -plate to move on cleaning scraper, so that the inside both sides of cleaning push -plate and hold in the scraping block of cleaning scraper surface scrape the surface of cleaning scraper, prevent its surface residual cleaning when residual stain influence subsequent cleaning.

The invention belongs to a system and a process for co-producing potassium nitrate and calcium magnesium nitrate fertilizers by using a nitrophosphate fertilizer device. Comprising a powdered rock phosphate magnesium-calcium pre-removal unit, the powdered rock phosphate magnesium-calcium pre-removal unit is connected with a primary acidolysis decalcification unit, the primary acidolysis decalcification unit is connected with a nitrophosphate fertilizer production unit through a secondary decalcification and potassium nitrate separation unit, and the secondary decalcification and potassium nitrate separation unit is further connected with a potassium nitrate preparation unit; a liquid phase channel in the ground phosphate rock magnesium-calcium pre-removal unit and a solid phase channel in the primary acidolysis calcium removal unit are connected with the calcium magnesium nitrate fertilizer preparation unit; the ground phosphate rock magnesium-calcium pre-removal unit at least comprises a magnesium removal tank, the top of the magnesium removal tank is connected with a ground phosphate rock channel and a first nitric acid pipeline, an outlet of the magnesium removal tank is connected with a filter press, a liquid phase outlet of the filter press is connected with the primary acidolysis calcium removal unit, and a solid phase pipeline of the filter press is connected with the calcium magnesium nitrate fertilizer preparation unit; the method has the characteristics of improving phosphorite utilization rate and product added value.

1. The name of the design product: packaging box (famotidine calcium magnesium chewable tablets). 2. The use of the design product: for product packaging. 3. The design points of the design product: in the combination of shape and pattern. 4. The picture or photo that best indicates the design points: front view.

The invention provides an anti-calcium-magnesium salt type polyacrylamide and a preparation method thereof, the preparation method comprises the following steps: (1) adding an acrylamide monomer, a hydrophobic monomer, a sulfobetaine type dispersant, an anti-salt monomer, a dissolution promoter and a coagulation inhibitor into water, uniformly mixing, and initiating a reaction in the presence of a composite initiator to obtain a first reaction product solution; (2) adding a thio monomer and an acid catalyst into the first reaction product solution for reaction to obtain a second reaction product solution; and (3) heating the second reaction product solution, adding a high-temperature initiator, reacting to obtain a white gel product, granulating the white gel product, adding a hydrolytic agent and a micro-crosslinking agent, and reacting to obtain the calcium-magnesium salt resistant polyacrylamide. The anti-calcium-magnesium salt type polyacrylamide obtained in the invention can still maintain the extended conformation and stable network structure of a molecular chain in high-content calcium-magnesium salt water, and shows excellent salt resistance.

The present application relates to a kind of high salt high calcium magnesium wastewater and miscellaneous salt disposal system and method, by oxidation, adsorption, adjustment, filtration purification after high salt high calcium magnesium wastewater, into nanofiltration unit 1 and separate out polyvalent salt, nanofiltration concentrated water is removed by gypsum crystallization method and ammonium carbonate method, after purification, into nanofiltration unit 2 and separate, nanofiltration concentrated liquid is reacted with after pyrolysis miscellaneous salt and forms gypsum, solution evaporation crystallization produces sodium chloride and gypsum, sodium chloride enters the production of sodium carbonate salt in alkali unit, and the production of ammonia-containing mother liquor is recycled back to alkali unit by hot ammonia extraction, and evaporation crystallization mother liquor is recycled by hot ammonia, and forms ammonium carbonate with CO2 to soften nanofiltration unit 1 concentrated liquid, the water produced by nanofiltration unit 1 and 2 is sequentially passed through concentration unit 1 and 2, and the concentrated liquid containing sodium chloride is passed into the alkali unit to produce alkali, and the gypsum produced by the system is dehydrated after purification to form gypsum product. The present application solves the problem of high-salt high-hardness wastewater and miscellaneous salt disposal, and has the advantages of low energy consumption and strong economy.

The application discloses a kind of ascorbic acid chelated calcium magnesium water-soluble fertilizer compatible with phosphate fertilizer and a preparation method thereof.The method comprises adding EDTA accelerator to ascorbic acid calcium magnesium solution to promote reaction until the reaction solution is clear, drying the reaction solution to obtain ascorbic acid chelated calcium magnesium water-soluble fertilizer compatible with phosphate fertilizer.The chelated calcium magnesium prepared by the method has a solubility of greater than or equal to 60 g, and a total calcium magnesium content of greater than or equal to 10%, which meets the technical index requirements of the industry standard NY2266-2012 for water-soluble fertilizer solid products.Meanwhile, due to the synergistic chelation of ascorbic acid and EDTA, a mixed solution obtained by dissolving 1 g of the ascorbic acid chelated calcium magnesium water-soluble fertilizer compatible with phosphate fertilizer, 5 g of potassium dihydrogen phosphate and 100 ml of water can remain clear for more than 8 hours, greatly improving the compatibility with phosphate fertilizer.

The present invention relates to X-ray amorphous and hollow calcium magnesium fluoride phosphate particles. The X-ray amorphous and hollow calcium magnesium fluoride phosphate particles have a mean diameter ranging from 50 to 500 nm and comprise a respective shell. The respective shell comprises 15-30 wt% calcium, 50-65 wt% phosphate, 4-8 wt% magnesium, 1-10 wt% fluoride, and the balance is water.

The invention discloses a growth method of calcium-magnesium-zirconium doped gadolinium-gallium garnet, and relates to the field of crystal material preparation, and the method comprises the following steps: (1) raw material preparation and pretreatment: selecting Gd2O3, Ga2O3, CaCO3, MgO and ZrO2 powder with the purity greater than or equal to 99.99%, dividing the powder into a core layer, a transition layer and a surface layer according to a stoichiometric ratio to prepare a gradient doped precast block, and roasting the gradient doped precast block at 800 DEG C for 4 hours for later use; (2) equipment transformation and debugging: transforming the Czochralski growth furnace into an upper and lower independent double-temperature-zone structure, equipping a PID intelligent temperature control system, and debugging to form a stable temperature field with an axial temperature difference of less than 5 DEG C / cm and a radial temperature difference of 2 DEG C; through a gradient synergistic doping technology, crystal lattices of the inch SGGG crystal are effectively improved, the mismatching rate of the inch SGGG crystal and a high-bismuth iron garnet epitaxial layer is reduced, the problem of interface defects caused by lattice mismatching of a traditional GGG crystal is solved, the quality of the epitaxial layer is remarkably improved, and growth and preparation of the large-size, low-defect and high-uniformity SGGG crystal are achieved.

The application discloses a kind of high efficiency gentle mammal blastocyst single cell dissociation method.The method includes the following steps: (1) zona pellucida removal: the blastocyst is placed in calcium magnesium table type liquid, and zona pellucida is completely removed by dissolving and physical blowing operation;(2) enzyme digestion incubation: the blastocyst after step (1) is handled and is transferred to 35-37 ℃ pre-equilibrated complex dissociation solution and incubated for 15-30 minutes, during which intermittent blowing is carried out, until the blastocyst is completely dissociated into single cell;(3) washing: the single cell obtained by dissociation is washed using dPBS, and the residual dissociation solution is removed.The method of the application has high efficiency, high activity and simplified operation.The dissociation process is simplified from 3-4 steps to two steps (zona pellucida dissolution+enzyme digestion incubation), the total time is shortened from more than 90 minutes to less than 30 minutes, the dissociation efficiency is significantly improved;Cell viability is increased from about 70% to more than 90%, the cell junction is gently lysed, and cell damage is reduced.

The present application relates to a continuous reactor for producing fully water-soluble nitro-calcium magnesium silicon tablets, and relates to the technical field of reactors, which includes a reactor body, an overflow tube, a baffle, a first stirring component, a second stirring component, a mixing component and a third stirring component, wherein the first stirring component includes a driving member, a stirring shaft, a stirring plate and a first transmission part, the second stirring component includes a driving rod, a first stirring impeller and a second transmission part, the mixing component includes a first telescopic rod, and the third stirring component includes a second stirring impeller and a third transmission part. The baffle slides under the drive of the stirring shaft, and the sliding baffle drives the stirring plate, the first stirring impeller, the first telescopic rod and the second stirring impeller to move, the stirring plate turns over the mixed liquid, the first stirring impeller stirs the mixed liquid comprehensively, the first telescopic rod causes the mixed liquid to impact and mix, and the second stirring impeller further stirs the mixed liquid. The present application has the effect of improving the overall mixing uniformity of powder and liquid.

The utility model discloses a kind of continuous calcium magnesium iron impurity removal devices for mirabilite method production potassium sulfate, comprising: reaction tank;Stirring assembly one is assembled on the reaction tank, and the stirring assembly one is used to stir and guide raw material;Cooling coil is fixedly installed on the reaction tank, and the cooling coil is used to cool solution;The effect of above-mentioned device is that new material is directly guided to the bottom of reaction tank by the action of flow guide cylinder, avoid new material and the premature contact of floating impurities in upper portion of tank body, to improve reaction efficiency and impurity removal effect.Raw material in reaction tank is fully stirred and mixed under the action of stirring assembly one.Stirring assembly one is rotated by servo motor driving stirring shaft one, ensure that reactant material is uniformly mixed, promote reaction to fully carry out, realize the continuous high-efficiency removal of calcium magnesium iron and other impurities in the process of mirabilite method production potassium sulfate, with significant technical advantage and economic benefit.

The invention provides a compound agent for improving acid soil, a preparation method and application. The compound agent for improving the acid soil comprises calcium-magnesium-silicon-based mineral powder and silicate bacterial liquid, the solid-to-liquid ratio of the calcium-magnesium-silicon-based mineral powder to the silicate bacterial liquid is (0.5-1.0) g: (80-120) mL. The calcium-magnesium-silicon-based mineral powder and the silicate bacterial liquid can efficiently and enduringly neutralize the acidity of the soil through a synergistic mechanism of mineral slow release and biological activation, significantly increase the pH value of the soil, promote slow release and enrichment of nutrient elements such as calcium, magnesium, potassium and silicon, and effectively improve the physical and chemical properties of the soil. Moreover, the preparation method disclosed by the invention is simple, convenient to operate, low in cost and easy for large-scale production and application, and has important significance for realizing green and sustainable improvement of acid soil and safe production of vegetables.

The invention particularly relates to calcium magnesium aluminate-calcium hexaluminate porous ceramic and a preparation method thereof. According to the technical scheme, the preparation method comprises the following steps: taking calcium aluminate cement, boehmite and light calcined magnesia as raw materials, adding the raw materials and cellulose into water, and mechanically stirring to obtain slurry; pouring the slurry on a heating plate, and drying to obtain a film-shaped green body; and laminating the film-shaped green body to obtain a ceramic green body, heating the ceramic green body to 1400-1600 DEG C at a rate of 2-5 DEG C / min, and carrying out heat preservation to obtain the calcium magnesium aluminate-calcium hexaluminate porous ceramic. The preparation method has the characteristics of simple and easy process, easy process control, low cost, high efficiency and environmental friendliness, and the prepared calcium magnesium aluminate-calcium hexaluminate porous ceramic is high in porosity, low in heat conductivity coefficient and excellent in mechanical property, and is widely applied to the fields of sewage treatment, air purification and heat insulation.

The invention provides application of fluazinam combined with a seaweed calcium-magnesium fertilizer in prevention and treatment of potato early blight, and belongs to the technical field of plant disease prevention and treatment. In the invention, the fluazinam plays a role in killing pathogenic bacteria of potato early blight, and the seaweed calcium magnesium fertilizer can induce and improve the disease resistance of potatoes. The fluazinam and the seaweed calcium magnesium fertilizer have a synergistic effect, and the problems that a single agent is insufficient in control effect and cannot effectively activate the disease-resistant mechanism of the potatoes can be solved.

This invention discloses a trivalent chromium-doped magnesium calcium aluminate deep red phosphor and its preparation method. The phosphor is trivalent chromium ion-doped magnesium calcium aluminate with the chemical formula CaMg2Al. 16‑x O 27 :xCr 3+ The elemental molar ratio is Ca:Mg:Al:O:Cr = 1:2:(16-x):27:x, where 0.01≤x≤0.10. This invention also discloses a method for preparing this phosphor. The deep red luminescent phosphor of this invention exhibits absorption in the 300-650 nm region and its emission spectrum is located in the 600-880 nm region. Its emission color is in the deep red to near-infrared range, which matches the deep red absorption spectrum of plant photosynthesis. This phosphor has potential application prospects in plant LED lighting.

This invention discloses a method for preparing high-purity food-grade calcium magnesium alginate, belonging to the field of food additive technology. Brown algae are soaked in water and hydrochloric acid solution, followed by rinsing with water. The resulting brown algae slurry is heated, sodium carbonate solution is added, and after reaction, it is diluted with water. Insoluble residues are then removed to obtain a sodium alginate solution. The solution is purified sequentially using diatomaceous earth and ethanol. The precipitate obtained from the reaction is collected, washed, and dried to obtain purified sodium alginate solid. This solid is dissolved in water, and under stirring, calcium chloride solution and magnesium chloride solution are added dropwise. After reaction, the calcium magnesium alginate is obtained. This invention employs a dual purification process, significantly improving the purity of the raw materials; a triple impurity removal mechanism is designed to effectively remove heavy metals, pigments, and microorganisms. The calcium magnesium alginate prepared by this invention has high purity, good uniformity, stable nutrient content, excellent microbial indicators, high raw material utilization, mild process conditions, and low energy consumption, making it suitable for large-scale production.

The invention provides a mineral-based composite agent for phosphorus and fluorine polluted water and an ecological restoration method, the mineral-based composite agent adopts a gradient shell-core structure microsphere, and comprises a core, a middle layer and a shell layer; the core comprises magnesium-aluminum layered double hydroxide which is induced and reconstructed by metaphosphate or polyphosphate, a calcium magnesium silicate glass phase and a first sodium alginate-chitosan bonding system; the middle layer comprises charcoal loaded with lanthanum-zirconium bimetal (hydrogen) oxide active sites, calcium peroxide microcapsules and a second sodium alginate-chitosan bonding system; the shell layer is coated with composite gel formed by sodium alginate and silica sol as a continuous phase and disperses magnetic iron oxide and microcrystalline clinoptilolite. According to the composite agent disclosed by the invention, trapping-enriching-mineralizing integrated fixation of PO4 < 3-> / F <-> is realized, the whole process does not depend on polymeric flocculants such as polyaluminum chloride, and the secondary salt load and the flocculation residue risk are remarkably reduced.