590 results about "Calcium biphosphate" patented technology

The invention discloses ultra-high performance concrete and a preparation method thereof. The ultra-high performance concrete comprises the following components in percentage by mass: 15%-25% of cement, 3%-6% of nano SiO2, 30%-35% of fly ash or steel slag powder, 35%-40% of recycled aggregate, 1%-4% of fiber, 0.5% of a microbial remediation agent and 1%-3% of nano TiO2. The preparation method comprises the following steps: S1, pretreating the recycled aggregate; and S2, packaging the microbial remediation agent: mixing the bacillus pasteurii spores with calcium lactate, and wrapping the mixture in calcium phosphate microspheres. S3, step-by-step stirring; S3.1, dry mixing: uniformly stirring the cement, the fly ash, the nano SiO2, the nano TiO2 and the recycled aggregate; s3.2, wet mixing is carried out, water solution fibers containing the polycarboxylic acid water reducing agent are added, uniform stirring is carried out, and the water-binder ratio of the water solution containing the polycarboxylic acid water reducing agent is 0.18; s3.3, final mixing: adding the packaged microbial remediation agent, and uniformly stirring; and S4, directional curing: performing steam curing at 80 DEG C for 48 hours, performing ultraviolet irradiation, and performing constant-temperature and constant-humidity curing for 7 days. The ultra-high performance concrete has the effects of low cost, low carbon emission, multi-function integration and repeatable crack self-repairing.

The invention relates to a silk fibroin biological material with high beta-fold content and a preparation method thereof, and belongs to the technical field of biological extraction. The method comprises the following steps: preparing a regenerated silk fibroin solution; adding an enzyme catalytic promoter and an enzyme into the regenerated silk fibroin solution for incubation; the enzyme catalysis auxiliary agent is selected from one or more of a metal ion catalyst, a zwitterionic surfactant, a functionalized ionic liquid and a calcium phosphate nano-cluster; and centrifuging, cleaning and drying the obtained product to obtain the silk fibroin biological material with high beta-fold content. The silk fibroin material has higher beta-folding amount through primary structure modification, the space structure is more crystallized, and the amino acid sequence is more regular and ordered. The silk fibroin material provided by the invention has excellent mechanical properties, efficiency and yield, and is a biological protein material with great development potential.

The invention relates to the technical field of sludge reduction and resource utilization, in particular to a method for resource utilization of sludge gasification slag. According to the method, municipal sludge gasification slag is smashed and then subjected to acid leaching, acid leaching liquid and acid leaching slag are obtained, iron in the acid leaching liquid is recycled, meanwhile, the acid leaching slag is subjected to alkaline leaching, under the strong alkaline condition, a calcium source is added into alkaline leaching liquid, then calcium phosphate sediment can be obtained, and iron in alkaline leaching separation liquid is recycled; a calcium ion solution can be generated in the processes of recovering iron in the pickle liquor and refining calcium phosphate, and the obtained calcium ion solution can be used as a calcium source for comprehensive utilization. The method disclosed by the invention can be used for realizing extraction and resource utilization of phosphorus, iron, aluminum and calcium in the sludge gasification slag, and has important significance on environmental protection and resource saving.

To provide a medical tissue reconstruction material, which is involved in tissue reconstruction and exhibits superior tissue affinity, tissue conductivity, and mechanical properties, and a method for producing the same.SOLUTION: The present invention provides a composite comprising a biodegradable polymer and calcium phosphate exhibiting one of scaly, acicular, grooved, or linear recessed structures, and / or calcium carbonate containing vaterite, the composite meeting specific conditions.SELECTED DRAWING: Figure 3

The invention discloses a compound feed for raising plateau live pigs and a preparation method thereof, and relates to the technical field of feed processing. The compound feed for raising the plateau live pigs is prepared from manganese-selenium compound modified charcoal, soybean polysaccharide polylysine-based supported nanoparticles, aspergillus oryzae, soybean meal powder, corn flour, wheat bran, mountain flour, calcium hydrophosphate, table salt and multivitamins. Manganese-selenium composite modified charcoal, soybean polysaccharide polylysine-based supported nanoparticles and aspergillus oryzae are subjected to co-fermentation culture to form a uniform, stable, loose and porous three-dimensional network fermentation substrate composite system, so that the damage of gastric acid to components is reduced, the targeted release of intestinal tracts is realized, and the bioavailability is improved. The composite functional additive which is high in nutrition, easy to absorb, anti-oxidation, anti-anemia, anti-ultraviolet radiation and the like is obtained, and the adverse effects of low temperature, oxygen deficit and ultraviolet factors on animal growth and feed oxidative rancidity are effectively reduced.

The invention relates to a curcumin-loaded MMP response type melittin nano-pellicle vesicle as well as a preparation method and application thereof, and belongs to the technical field of pharmaceutical preparations. The preparation method comprises the following steps: firstly, preparing curcumin entrapped lipidosome; then carrying out culture amplification on engineering bacteria carrying melittin recombinant plasmids, extracting cell membranes after removing cell walls, and carrying out ultrasonic treatment and membrane extrusion to obtain melittin cell membrane nano-vesicles; fusing the curcumin lipidosome and the cell membrane nano-vesicles in an ultrasonic extrusion mode to obtain fused vesicles; and finally, carrying out surface calcium phosphate mineralization treatment on the fused vesicles to obtain the curcumin-loaded MMP response type melittin nano pellicle vesicles. The nano mycofilm vesicle prepared by the invention can be used for preparing antitumor drugs, and the biocompatibility and in-vivo stability of nanoparticles are improved by introducing a calcium phosphate coating; through combined delivery of melittin and curcumin, the anti-tumor effect is enhanced, so that the growth and proliferation of tumor cells are inhibited.

The invention belongs to the field of feeds, and discloses a biological feed containing a microbial microcapsule preparation and a preparation method of the biological feed. The biological feed is prepared from the following components in parts by weight: 90 to 93 parts of wall-broken rhodopseudomonas palustris powder, 2 to 3 parts of lysine hydrochloride, 0.1 to 0.5 part of methionine, 0.1 to 0.5 part of threonine, 0.3 to 1 part of arginine, 2 to 3 parts of calcium hydrophosphate, 1 to 2 parts of calcium carbonate, 0.5 to 1.2 parts of an antioxidant additive, 0.3 to 0.8 part of modified nano montmorillonite and 1 to 5 parts of a microbial microcapsule preparation. According to the biological feed, the wall-broken rhodopseudomonas palustris serves as basic nutrition and a main microorganism source of the feed and is matched with the compound probiotics of the microorganism micro-capsule preparation, the intestinal nutrition utilization rate is effectively increased, meanwhile, the antioxidant additive is added, and the problems that a single additive is narrow in function and prone to oxidation are solved; the modified nano montmorillonite is added to solve the problem of antagonism of toxin adsorption and mineral absorption.

The invention discloses a preparation method for simultaneously and efficiently extracting crocodile polypeptide and crocodile oil, and relates to the technical field of biological extraction, crocodile meat is used as a raw material, and heating micro-pressure treatment is sequentially performed to promote component dissolution; a multi-stage enzymolysis process is adopted, alkaline protease, neutral protease and lipase are sequentially used, and a calcium phosphate system is used for assisting filtration and a natural antioxidant is added in a gradient manner in the enzymolysis process; performing plate frame filtration and standing layering subsequently to realize crude separation of the oil peptide; finally, the crocodile polypeptide liquid is subjected to multi-stage membrane filtration and spray drying, the crocodile crude oil is subjected to ultrasonic-assisted fishy smell removal, ceramic membrane fine filtration and gradient cooling phase change refining, and after enzymolysis treatment and before filtration, a composite additive is added into enzymatic hydrolysate and stirred. No organic solvent exists in the whole process, and the product yield, purity and oxidation stability are remarkably improved.

The present invention relates to a method of manufacturing a surface-modified material wherein the method comprises the steps of applying a coating composition onto at least one surface of a substrate to form a porous coating thereon wherein the coating composition comprises mineral particles selected from the group consisting of calcium carbonate, calcium phosphate, hydromagnesite and mixtures thereof and a binder, and impregnating the porous coating with at least 150% by weight of an impregnating liquid composition based on the total weight of the porous coating to form a constraining liquid layer within and on the porous coating wherein the impregnating liquid composition is chemically inert to the substrate and the porous coating. Furthermore, the invention relates to a corresponding surface-modified material, an article comprising the same and the use of such a material.

The invention discloses a surface coating modified calcium phosphate microsphere and a preparation method thereof, and belongs to the technical field of calcium phosphate microsphere preparation. The surface coating modified calcium phosphate microspheres are prepared from the following components in parts by weight: 60 to 68 parts of calcium phosphate ceramic powder, 20 to 32 parts of modified bioactive bodies, 8 to 12 parts of composite pore forming agents and 2 to 5 parts of binding agents, the modified bioactive body is prepared from vinyltriethoxysilane, butyl dibutyl phosphate, citric acid, calcium acetate, magnesium sulfate and polyether-ether-ketone fibers, and the composite pore-forming agent is prepared from octyl dimethyl tertiary amine, epoxy chloropropane, hydrolyzed soybean protein and starch. The calcium phosphate microspheres prepared by the method have excellent porosity and biological activity.

The present application relates to the field of ceramsite, and specifically discloses a method for preparing binary ceramsite using coal gangue and the obtained ceramsite. The method comprises the following steps: preparing the core: fully mixing carbon-free industrial waste slag with calcium phosphate solution at a ratio of 1kg: (0.4-0.8)L, pressurizing, and then granulating to obtain green balls, and uniformly spraying a binding solution on the surface of the green balls to obtain the core; preparing the coating material: fully mixing coal gangue with sodium alginate solution at a ratio of 1kg: (0.2-0.5)L to obtain the coating material; overmolding: uniformly coating the core with the coating material to form a binary green ball, wherein 0.15 < d / D < 0.75, d is the green ball diameter, and D is the binary green ball diameter; preparing the ceramsite: drying, pyrolyzing, decarbonizing, sintering, and cooling the binary green balls to form binary ceramsite. The obtained ceramsite product not only has no black core, excellent strength, but also good water absorption.

The invention discloses a grading reaction crystallization recovery process and system for semiconductor fluorine-containing and phosphorus-containing waste liquid, the fluorine-containing and phosphorus-containing waste liquid and a lime solution react in a fluorine recovery crystallization reactor under the condition that the pH is 3-4 to form calcium fluoride crystals, and the calcium fluoride crystals are dehydrated to obtain calcium fluoride particle crystal products; the effluent of the fluorine recovery crystallization reactor, the calcium fluoride crystal dehydration filtrate, the lime solution and the calcium chloride solution react in a secondary reaction tank under the condition that the pH is 5-6, and calcium fluoride, fluorapatite, silicon dioxide and silicon-aluminum precipitates are removed through coagulation, flocculation and precipitation; effluent of the second-stage reaction tank, the lime solution and the calcium chloride solution react in the phosphorus recovery crystallization reactor under the condition that the pH is 7-8 to generate hydroxyapatite crystals, and the hydroxyapatite crystals are dehydrated to obtain hydroxyl calcium phosphate particle crystal products. Meanwhile, a high-purity calcium fluoride crystal product and a hydroxyl calcium phosphate crystal product are produced, and fluorine and phosphorus are recycled.

The invention relates to the technical field of biological tissue adhesives, in particular to a biological tissue adhesive composition. The biological tissue adhesive composition comprises a powder A, a powder B and a powder C, wherein the powder A is obtained by curing calcium silicate and acidic calcium phosphate in a curing liquid, curing, drying and crushing; powder B: bivalent metal salt; powder C: phosphorylated amino acid; and an aqueous solvent; the biological tissue adhesive is used for bone adhesion and bone repair. According to the biological tissue adhesive composition provided by the invention, a silicate / hydroxyapatite composite material with a bone induction function is synthesized through optimized bone cement reaction, a curing liquid is added to react with phosphorylated amino acid, and a bone adhesive material is obtained through organic and inorganic material coordination reaction; the bone repairing and regenerating capability and the bone bonding capability are good.

The invention discloses a method for preparing lithium phosphate with high efficiency and low cost, which comprises the following steps: roasting spodumene concentrate and phosphoric acid, and carrying out slurrying leaching and solid-liquid separation to obtain a lithium dihydrogen phosphate solution; the method comprises the following steps: evaporating and concentrating a lithium dihydrogen phosphate solution, regulating the pH value of the lithium dihydrogen phosphate solution to 7-8 by adopting ammonia water, adding calcium phosphate seed crystals, inducing to remove residual calcium ions and magnesium ions in the solution, and carrying out solid-liquid separation to obtain a phosphate solution containing lithium ions; and then adjusting the pH value back to 11-13 by adopting alkali for lithium precipitation to obtain a lithium phosphate solid, and washing and drying to obtain a battery-grade lithium phosphate product. According to the preparation process of the lithium phosphate, the spodumene is acidized and roasted by adopting phosphoric acid, and pulpified and leached, and calcium ions and magnesium ions in a solution are directly induced by adopting calcium phosphate seed crystals to form crystals to be separated out on the basis of a weakly alkaline condition, so that the process steps are simple and convenient, the subsequent purification procedure is omitted, and the preparation process is more suitable for industrialization; meanwhile, the lithium phosphate product with high purity and high yield can be obtained through the simple and convenient process, the purity can reach 99.5% or above, and the yield can reach 92% or above.

A bone graft composition comprising a calcium phosphate putty is provided. A method of repairing a bone defect in a patient by applying the bone graft composition is also provided.

The present invention belongs to the technical field of phosphate ore beneficiation and relates to a large-scale process method for a siliceous-calcareous phosphate ore spiral chute. Specifically, it includes: (1) Raw ore desliming: The raw ore is deslimed, and the deslimed raw ore enters the next step; (2) Classification and gravity separation: The deslimed raw ore is classified into several relatively narrower particle sizes according to certain conditions, and the products of each particle size are respectively subjected to gravity separation using a chute (with a diameter greater than 1200 mm). The concentrates and tailings after gravity separation of the products of each particle size are respectively combined into gravity separation concentrates and gravity separation tailings; (3) Flotation of gravity separation products. The present invention adds desliming and classification and gravity separation operations, which can effectively reduce the problem of entrainment of fine particle sizes in each strip in the chute (with a diameter greater than 1200 mm) and the problem of poor separation accuracy of the chute (with a diameter greater than 1200 mm) caused by equal-settling particles, improve the grade difference between the concentrates and tailings separated by the chute (with a diameter greater than 1200 mm), enhance the adaptability of the reagents in the subsequent flotation process, and improve the fluidity of the flotation foam.

The invention provides functional compound feed for sows in the perinatal period as well as a preparation method and application of the functional compound feed, and relates to the technical field of livestock breeding. The functional compound feed for the sows in the perinatal period is prepared from the following raw materials in parts by mass: 55 to 60 parts of corn, 13 to 15 parts of soybean meal, 1 to 5 parts of fish meal, 6 to 8 parts of extruded soybeans, 2 to 8 parts of barley bran, 0.5 to 1.5 parts of soybean oil, 0.5 to 1.5 parts of glucose, 2 to 8 parts of wheat bran, 1 to 1.5 parts of dicalcium phosphate, 0.5 to 1.5 parts of calcium carbonate, 0.2 to 0.6 part of table salt, 0.05 to 0.2 part of baking soda, 0.05 to 0.2 part of 50 percent choline chloride and 2 to 5 parts of premix. 0.1 to 0.5 part of a composite additive; the compound additive is prepared from the following raw materials in parts by mass: 0.5 to 1 part of ligustrazine, 1 to 5 parts of aloe-emodin glycoside, 0.5 to 2 parts of magnolol and 3 to 5 parts of probiotic microcapsules. Aiming at the perinatal syndrome of the sows, by adjusting the composition and proportion of the raw materials of the compound feed and the preparation method of important raw materials, many problems caused by the perinatal syndrome of the sows are solved, and the compound feed has a good industrial application prospect.

The invention discloses microcapsule powder for covering the oil smell of euphausia superba oil and a preparation method of the microcapsule powder, and belongs to the field of euphausia superba oil processing. The microcapsule powder is composed of 50-75% of OSA starch, 10-30% of euphausia superba oil, 3-20% of sodium alginate, 1-10% of succinic acid and 0.5-5% of calcium hydrophosphate, during preparation, the OSA starch is gelatinized and then sheared and homogenized with the euphausia superba oil to obtain a miniemulsion, the succinic acid, the sodium alginate and the calcium hydrophosphate are prepared into a mixed solution, the mixed solution is mixed with the miniemulsion in proportion, and spray drying is performed to obtain a finished product. An OSA starch-sodium alginate double-wall material system is adopted, a compact cross-linked layer is formed through pH response, peculiar smell substances such as trimethylamine can be completely masked, the astaxanthin retention rate is up to 95.14%, the embedding rate reaches 89.48%, krill oil oxidation is effectively inhibited, krill oil is converted into powder, the stability and the sensory property are improved, application of krill oil in the food field is widened, the technology is simple, and the method is suitable for industrial production. The method is suitable for industrial production.

The present invention relates to a bone trauma repair bone paste and a preparation method thereof, belonging to the technical field of biomedical material manufacturing. The bone paste of the present invention is prepared by mixing nano calcium phosphate biphasic ceramics, biomimetic mineralized collagen fibers, biodegradable polymers, modified hyaluronic acid, β-cyclodextrin-coated recombinant human bone morphogenetic protein-7, angiogenesis promoters and immunomodulatory additives in a certain proportion; the nano calcium phosphate biphasic ceramics are hydroxyapatite and β-tricalcium phosphate biphasic ceramics; the biomimetic mineralized collagen fibers are prepared by mineralizing freeze-dried fibers of type I collagen admixed with hydroxypropyl chitosan; the modified hyaluronic acid is hyaluronic acid-thiol and hyaluronic acid-hydrazide; the angiogenesis promoter is a polylactic acid sustained-release microsphere loaded with tanshinone and hydroxy polyethylene glycol biotin; the immunomodulatory additive is disodium glycyrrhizinate, lentinan and astragalus polysaccharide. The bone paste can effectively improve the bone induction ability, promote angiogenesis and reduce the risk of immunogenicity.

The present invention relates to a composition of a ready to mix drink with green coffee extract as the main component. The current embodiment of our present invention includes three types of composition to provide flavour difference. Namely, mocha coffee, roasted coffee and cappuccino coffee flavour. The main components of the composition include the following ingredients in all the variants namely green coffee extract (50%), pullulan, propylene glycol, maltodextrin, polyethylene oxide, glycerol, polysorbate 80, sorbitol, nuesilin UFL2. Di basic calcium phosphate anhydrous, with only the flavoring agent as the changeable component to the composition.

The invention relates to the technical field of biomedical materials, in particular to a preparation process of novel composite bone cement with biological activity, which comprises the following steps: calcining calcium phosphate in a calcining furnace at 800-1000 DEG C for 3 hours, cooling to 20 DEG C, grinding the calcium phosphate by using a grinding machine until the diameter is less than 100 mu m, and drying to obtain the novel composite bone cement with biological activity. Calcium phosphate micro powder is obtained; by fusing the calcium phosphate, the nano-hydroxyapatite, the bioglass and the collagen, the material has a mechanical support function of an inorganic phase and biological activity of an organic phase, the nano-hydroxyapatite is extremely similar to human bone minerals and can promote osteoblast attachment and growth, and the collagen constructs a bionic microenvironment and accelerates new bone formation, so that the material can be used for treating osteoporosis. The bone repair efficiency is obviously improved.

The invention relates to the technical field of biomedical materials, in particular to multi-material 3D printing bionic gradient soft-hard integrated hydrogel as well as a preparation method and application thereof. Based on a copolymerization system of high-strength supramolecular N-acryloylglycinamide and vinyl phosphoric acid, an NAGA aqueous solution and an NAGA-VPA aqueous solution are printed into hydrogel of a gradient structure by adopting a DLP multi-material printing technology, then the hydrogel is sequentially soaked in a calcium-phosphorus mixed aqueous solution (Ca / P = 1.67), ammonia water, a calcium chloride aqueous solution and deionized water, and the hydrogel is prepared through a hydrothermal method. Therefore, in-situ gradient deposition and curing of hydroxyapatite (HAP) are realized. The multi-material 3D printing bionic gradient soft-hard integrated hydrogel prepared by the method has a continuous biochemical-mechanical gradient, a surface layer low-modulus area is matched with cartilage performance, a deep layer high-mineralization area is integrated with bone tissue, the HAP crystallinity of a transition area is in spatial dependence distribution, and the hydrogel is suitable for osteochondral defect repair and manufacturing of bionic joint prostheses.

The invention relates to the technical field of building glazed tiles, in particular to an antibacterial glazed tile and a preparation method thereof.The antibacterial glazed tile comprises a green body layer and an antibacterial glaze layer which are sequentially arranged from bottom to top; wherein the antibacterial glaze layer is obtained by calcining antibacterial glaze; the antibacterial glaze is prepared from the following raw materials: high-temperature antibacterial frit, calcined kaolin, corundum, quartz, dolomite, calcined talc, strontium carbonate, wollastonite, potassium feldspar and albite; the high-temperature antibacterial frit is prepared from the following raw materials: zirconium silicate, a silver antibacterial agent, calcined aluminum oxide, calcined talc, quartz, wollastonite, kaolin, calcium phosphate, potassium feldspar, albite, boric acid and lithium carbonate. According to the antibacterial glazed tile and the preparation method thereof provided by the invention, the formula of the antibacterial glaze is optimized, so that the antistatic property and the corrosion resistance can be improved on the premise of ensuring the antibacterial property of the antibacterial glazed tile.

The invention relates to the technical field of seed coating materials, and discloses a wheat and rice seed coating material and a coating process. The wheat and rice seed coating material comprises micron iron powder, nano calcium phosphate, nano magnesium hydroxide and a binder, the addition amounts of the micron iron powder, the nano calcium phosphate and the nano magnesium hydroxide respectively account for 10%-20%, 2%-10% and 3%-10% of the total weight of the seeds; the binder is at least one of a polyvinyl alcohol colloidal solution, a carboxymethyl cellulose colloidal solution and a hydroxypropyl methyl cellulose colloidal solution. The invention also provides a coating process of the wheat and rice seed coating material. The coating material disclosed by the invention not only can protect seeds, but also can efficiently adsorb and fix heavy metal ions of lead, cadmium and arsenic after the micron iron powder, the nano calcium phosphate and the nano magnesium hydroxide are slowly released in soil, so that integrated prevention and control from'seeds' to'rhizosphere 'is realized.

The application provides a radionuclide nanohydrogel microneedle and a preparation method and application thereof, and belongs to the field of nanobiomedicine. 32 P-labeled calcium phosphate, which is formed by a biomimetic reaction of Ag2S@Ca 32 P nanoparticles, and a base layer which is a base matrix and comprises hyaluronic acid 32 P nanohydrogel microneedle can release Ag2S nanoparticles in response to a weakly acidic tumor environment, and under the irradiation of near-infrared light, the photothermal conversion efficiency can effectively kill bacteria, effectively improve the tumor hypoxic environment, enhance the treatment effect of radionuclides, play an antibacterial and wound healing promoting role in melanoma defect repair, and maximize the inhibition of tumor growth and tumor recurrence.

The invention discloses a preparation method of a gradient pore-forming magnesium-containing calcium phosphate bone repair material, which comprises the following steps: S1, mixing nano-hydroxyapatite with polylactic acid-glycolic acid copolymer (PLGA) powder, adding dichloromethane as a solvent, continuously stirring to form a solution, and freeze-drying to obtain an nHA / PLGA raw material, and carrying out high-temperature fused deposition through a 3D biological printer to prepare the degradable nPLGA stent. S2, weighing the calcium phosphate bone cement powder and the magnesium metal microspheres according to a preset mass ratio, stirring the slurry and homogenizing to obtain calcium phosphate bone cement slurry containing the magnesium metal microspheres; s3, injecting the calcium phosphate bone cement slurry obtained in the step S2 into the nPLGA stent prepared in the step S1 to obtain an MC / nPLGA compound; gradient micropores are generated through hydration reaction of the magnesium microspheres, the gradient micropores and macropores formed by degradation of PLGA form a complementary structure, and the total porosity reaches 68% and is increased by 3.4 times compared with traditional CPC.

The invention discloses a preparation method of a pesticide pollution remediation agent for groundwater of karst landforms, and relates to the technical field of groundwater pollution remediation. The method has the effect of enhancing pesticide degradation, pesticide pollutants can be efficiently degraded in a complex environment of karst underground water by compounding hard water-resistant fungi, dehalogenation bacteria and denitrifying bacteria, and a better remediation effect is achieved; the medicament can improve the stability and the adsorption capacity of the carrier, the bionic calcium phosphate nano carrier is adopted, the specific surface area is high, the adsorption capacity is excellent, the adsorption capacity on pollutants can be effectively enhanced, and the remediation effect is improved; the agent has an efficient repairing mechanism, the load capacity of the flora is enhanced through biological induction mineralization and physical adsorption enhancement of a bacterium-carrier complex, the release rate of the flora is controlled through an intelligent coating technology, and precise repairing is achieved.

The invention discloses a method for extracting lithium from lithium precipitation mother liquor to obtain lithium phosphate, which specifically comprises the following steps of: performing preliminary extraction on the lithium precipitation mother liquor, performing reverse extraction by adopting a composite reverse extraction agent consisting of phosphoric acid and acetylacetone in a molar ratio of (5-15): 1, controlling the pH value of a reverse extraction system to be 5-7, and performing phase splitting to obtain a lithium phosphate wet product; and finally, adding the lithium phosphate wet product into lithium hydroxide for reaction, and filtering to obtain lithium phosphate. According to the method, efficient enrichment of lithium ions in the lithium precipitation mother liquor is achieved through the extraction and reverse extraction processes, meanwhile, through optimization of a reverse extraction system in the reverse extraction process, formation of calcium phosphate impurities is reduced, the extraction purity of lithium is improved, the morphology of lithium phosphate can be regulated and controlled in the reverse extraction process, batch stability is achieved, and the product quality is improved.

The invention discloses white dry granules with a multi-layer three-dimensional effect and a preparation method thereof, and relates to the technical field of building ceramic materials. The white dry granules with the multi-layer three-dimensional effect are prepared from a frit base material and a rare earth calcium phosphate additive, rare earth and calcium phosphate are added into a frit base material to serve as an additive, the high refractive index of oxides of La < 3 + > and Ce < 3 + > is utilized, refractive index difference is formed between the oxides of La < 3 + > and Ce < 3 + > and the frit base material, and light rays are subjected to multiple scattering and refraction at an interface; and meanwhile, the refractive index gradient is formed through particle size grading synergism, the reflection and refraction paths of light rays among particles with different particle sizes are different, and the visual'depth sense 'is generated. The additive is uniformly dispersed to ensure the consistent optical effect and avoid local over-brightness or over-darkness; due to the high refractive index of rare earth ions, light scattering is enhanced, and whiteness is improved; grain size distribution and light scattering are cooperated to form a multi-layer stereoscopic visual effect of bottom-layer framework support, middle-layer transition connection and top-layer fineness and brightness, and the decoration is enhanced.

The invention discloses a method and system for treating neutral high-calcium wastewater through combination of an MICP technology and chemical precipitation, and relates to the technical field of wastewater treatment. The method comprises the following steps: S1, inoculating a bacterial liquid containing synechocystis into neutral high-calcium wastewater; s2, under the daytime illumination condition, calcium ions in the wastewater are induced to form calcium carbonate precipitates through photosynthesis of synechocystis, and primary calcium removal is carried out; s3, under the dark condition at night, phosphate is added in batches by means of extracellular polymeric substances secreted by synechocystis, residual calcium ions in the wastewater are induced to form calcium phosphate or hydroxyapatite precipitates, and deep calcium removal is carried out. The day and night alternate metabolism characteristic of synechocystis is applied to neutral high-calcium wastewater treatment, so that efficient decalcification under a neutral condition can be realized, and stable water quality and controllable precipitation are considered. The open pond type reactor is adopted, so that water can stand and settle, mechanical stirring or temperature control equipment is not needed, and the operation cost is reduced.