33results about How to "Reduce extraction costs" patented technology

This invention discloses a primer and probe set, a kit, and their applications for detecting Staphylococcus aureus L based on real-time fluorescence MIRA technology. The primer and probe set consists of single-stranded DNA sequences 1-3. Based on the aforementioned primer and probe set, this invention establishes and optimizes a real-time fluorescence MIRA detection method for Staphylococcus aureus L. Furthermore, the optimized real-time fluorescence MIRA method is innovatively combined with a simplified nucleic acid extraction method and a portable fluorescence detection device, significantly reducing extraction and time costs while enabling rapid on-site detection of the virus, making it particularly suitable for grassroots units and remote areas. In addition, the real-time fluorescence MIRA detection method for Staphylococcus aureus L established in this invention has advantages such as high specificity, high sensitivity, and simple operation. Moreover, the detection process does not require opening the lid, effectively avoiding aerosol contamination, providing an effective technical means for the differential diagnosis and rapid detection of Staphylococcus aureus L.

The invention discloses an extraction method of silymarin. The extraction method of the silymarin comprises the steps of polar solvent treatment, acid solution treatment, alkaline solution treatment and purification. The polar solvent is selected from one or more of chloroform and dichloromethane, and the alkaline solution comprises one or more of sodium hydroxide and potassium hydroxide. The extraction method of the silymarin provided by the invention has the effects of reducing the extraction difficulty and cost of the silymarin.

The invention relates to the technical field of extraction and utilization of electrolytic aluminum lithium-containing waste, in particular to a method for extracting lithium from electrolytic aluminum waste through ultrasonic strengthening. The method comprises the following steps: (1) coarsely crushing the electrolytic aluminum waste; (2) after the carbon is removed, the electrolytic aluminum waste is subjected to ultrasonic strengthening to strengthen the leaching of lithium, and the lithium is selectively leached by controlling the leaching acidity; (3) performing two-stage impurity removal on the lithium leaching solution; and (4) concentrating and denitrifying the impurity-removed liquid, precipitating lithium, carbonizing and crystallizing to prepare the battery-grade lithium carbonate. According to the method, carbon in the electrolytic aluminum waste is removed through a calcination or combustion method, leaching of lithium is strengthened through an ultrasonic strengthening method, meanwhile, the leaching condition is controlled to enable lithium in the waste aluminum slag to be dissolved out into a leaching solution, and aluminum, iron, sodium and most fluorine in the waste aluminum slag are not dissolved out and left in the leaching slag. And performing simple impurity removal, concentration and denitration on the leachate to prepare the battery-grade lithium carbonate. The method is simple in process and high in lithium extraction rate, and cryolite is mainly contained in leaching residues and can be utilized subsequently.

The invention discloses a method for efficiently extracting high-purity chlorogenic acid and chlorogenic acid substances from stevia rebaudiana. The method comprises the following steps: concentrating stevia rebaudiana extract liquid to obtain permeate liquid I and trapped liquid I; adjusting the pH of the trapped fluid I to obtain a to-be-treated fluid; treating the liquid to be treated by adopting an electrodialysis-ultrafiltration coupling device, and collecting an ion phase I, an ion phase II and a desalted phase; adsorbing the ion phase II by adopting macroporous adsorption resin, and respectively analyzing by adopting a low-alcohol solution and a high-alcohol solution to obtain a low-alcohol analysis solution and a high-alcohol analysis solution; concentrating the high-alcohol desorption solution to obtain trapped fluid II, mixing and crystallizing the trapped fluid II and chlorogenic acid seed crystals, filtering to obtain filtrate I and a filter cake I, refining the filter cake I to obtain filtrate II and a filter cake II, and drying the filter cake II to obtain high-purity chlorogenic acid; concentrating the ion phase I to obtain trapped fluid III, and performing thermal concentration and spray drying on the trapped fluid III to obtain the chlorogenic acid substances. According to the method, the stevia rebaudiana is used as a raw material, high-content chlorogenic acid and chlorogenic acid substances are obtained, less waste liquid and waste materials are generated in the whole process, and the method is more environmentally friendly.

The invention provides bacterial cellulose modified in situ by utilizing Sanzan gum and a preparation method thereof, and belongs to the technical field of biopolymer materials and biological fermention.The preparation method comprises the following steps that yeast powder, peptone, Na2HPO4, KNO3 and glucose are mixed with water, then the Sanzan gum is slowly added and stirred until the Sanzan gum is completely dissolved, and a mixture is obtained; then adding vegetable oil and a fat-soluble modifier to prepare an HS-SG fermentation culture medium; inoculating the FY-07 seed solution into an HS-SG fermentation culture medium for culture and fermentation; fishing out a bacterial cellulose membrane generated by fermentation, washing with water, and removing thalli and a residual culture medium in the bacterial cellulose hydrate by using a NaOH solution under a high-temperature condition, so as to obtain a bacterial cellulose wet membrane. Therefore, the emulsification effect of the Sanzan gum can realize uniform dispersion of fat-soluble components, so that uniform in-situ modification of the bacterial cellulose is realized, and the in-situ modified bacterial cellulose with good oxidation resistance and good biocompatibility is further obtained.

The present application discloses a seaweed active ingredient and a gradient extraction process thereof, and belongs to the field of seaweed extraction technology. The gradient extraction process of the seaweed active ingredient comprises the following steps: harvesting freshly salvaged seaweed, washing impurities on its surface with seawater, then slicing and adding sodium carbonate solution to stir, to obtain seaweed slurry; adding ethanol thereto and stirring, and obtaining a precipitate and an ethanol extract 1 after extrusion; adding ethanol to the precipitate and stirring, and then centrifuging to obtain a crude alginate extract and a supernatant 1, which is evaporated to recover ethanol and obtain a crude fucoidan extract; adding water to the ethanol extract 1 and stirring, and then centrifuging to obtain a crude fucoxanthin extract and a supernatant 2, which is evaporated to recover ethanol and obtain a crude brown algae polyphenol extract. The gradient extraction process can obtain crude extracts of multiple active ingredients at the same time, and does not require the use of a large amount of fresh water resources and toxic reagents, does not generate waste, is simple to operate, and has low cost, which is conducive to promotion and application.

The invention discloses a preparation method and application of a kava extract with soothing and anti-allergy capacities, and the preparation method comprises the following steps: putting kava pepper root powder into an extraction tank, and carrying out subcritical extraction on the kava pepper root powder by using an organic solvent as an extraction solvent to obtain an extraction liquid; sequentially carrying out reduced pressure evaporation and filtration on the extract to obtain a crude extract; adding the crude extract into a feeding bottle of molecular distillation equipment, and carrying out molecular distillation treatment to obtain yellow oily liquid; and finally, drying the yellow oily liquid to obtain the kavalactone extract. The method has the characteristics of high extraction efficiency, no solvent residue and low preparation cost.

The invention provides an extraction method of molybdenum trioxide, and belongs to the technical field of extraction metallurgy. The extraction method of molybdenum trioxide provided by the invention comprises the following steps: carrying out vacuum melting on a molybdenum-containing material to obtain a sublimate, and cooling the sublimate to obtain molybdenum trioxide, the molybdenum content in the molybdenum-containing material is 37.42 to 46.31 wt%, and the oxygen content in the molybdenum-containing material is 30.74 to 38.13 wt%; the temperature of vacuum melting ranges from 880 DEG C to 1200 DEG C, and the vacuum degree ranges from 0.47 Pa to 10 Pa; the cooling rate of the cooling is 5-10 DEG C / min. According to the method, the molybdenum-containing material is subjected to vacuum melting, molybdate in the molybdenum-containing material is decomposed to obtain molybdenum trioxide, original molybdenum trioxide of the molybdenum-containing material is sublimated under the high-temperature condition, high-purity molybdenum trioxide is obtained through cooling, and the extraction efficiency of molybdenum trioxide is effectively improved; and the extraction method is simple, the low-grade molybdenum-containing material is used as the raw material, the extraction cost is lower, and no pollution is caused to the environment.

This invention relates to the field of natural product separation and recombination, and particularly to a recombinant saponin from *Gleditsia sinensis* and its preparation method. The method includes: 1) crude saponin extraction: water extraction of *Gleditsia sinensis* pericarp to obtain a crude saponin solution; 2) impurity removal: loading the crude saponin aqueous solution into macroporous adsorption resin AB-8 and eluting to remove impurities; 3) saponin component separation: eluting sequentially with 25-35% ethanol solution, 40-50% ethanol solution, 55-65% ethanol solution, and 70-80% ethanol solution to obtain S30, S45, S60, and S75 saponin components, respectively; 4) saponin hydrolysis: hydrolyzing the S45 saponin component to obtain hydrolyzed saponin; 5) saponin component recombination: recombining the saponin components obtained in steps 3) and 4) with the hydrolyzed saponin to obtain recombinant saponin from *Gleditsia sinensis*. This invention enables saponin purification and improves the surface activity of *Gleditsia sinensis*.

The invention provides a clay type lithium ore external field enhanced resource comprehensive utilization method, and relates to the field of hydrometallurgy. The method comprises the following steps: uniformly mixing clay type lithium ore with concentrated sulfuric acid, and carrying out low-temperature curing to obtain clinker; mixing the clinker with water, and then carrying out leaching reaction to obtain a lithium-rich aluminum leaching solution; carrying out evaporative crystallization on the lithium-rich aluminum leachate to obtain a mixed crystal of lithium sulfate and aluminum sulfate; performing high-temperature pyrolysis reaction on the mixed crystal to obtain an oxide; carrying out high-energy grinding and leaching on the oxide, and filtering to obtain a lithium-containing solution and crude aluminum oxide; and carrying out post-treatment on the lithium-containing solution to obtain the battery-grade lithium carbonate. According to the method, the technological process of the clay type lithium ore is optimized, synchronous leaching of valuable elements lithium and aluminum and efficient separation of the lithium element and the aluminum element are achieved, the problem that the cost is high when lithium is independently extracted is solved, cooperative utilization of clay type lithium ore resources is achieved, and the cost is reduced.

The invention relates to a method for recovering cobalt from a waste lithium battery leachate by using a beta-diketone eutectic solvent. The method uses the hydrophobic deep-eutectic solvent for extracting the organic phase. Wherein the deep eutectic solvent is prepared by mixing 4, 4, 4-trifluoro-1-(2-furyl)-1, 3-butanedione (HFTA) and trioctylphosphine oxide (TOPO) according to a molar ratio of 2: 1, and the catalyst is used for preparing the catalyst. The method comprises the following steps: taking a waste lithium ion battery leaching solution as an extraction water phase, wherein the extraction water phase contains CoSO4. 7H2O, NiSO4. 7H2O and Li2SO4; h2SO4 and NaOH are added into the extraction water phase to adjust the pH of the water phase, the extraction organic phase and the water phase are fully mixed according to the volume ratio of 1: 2-5: 2 and then stand still, phase separation is conducted, and an organic phase rich in cobalt and a water phase containing a small amount of cobalt are obtained. The method has the advantages of low energy consumption, simple process, high cobalt extraction efficiency and the like, the adopted extraction agent eutectic solvent is low in price, and the preparation method is simple and non-toxic.

The present invention provides a method for preparing a sea grape extract with antioxidant function, comprising the following steps: (1) washing and crushing the sea grapes; (2) adding an ethanol solution to the crushed sea grapes, heating, and obtaining a sea grape solution; (3) adding a composite enzyme to the sea grape solution in step (2) for enzymolysis; and then performing microwave extraction, with a microwave power of 260 to 320 W, to obtain a sea grape microwave liquid; the composite enzyme is prepared from pectinase, neutral protease, and cellulase; (4) filtering the sea grape microwave liquid in step (3), heating it, cooling it, and centrifuging it, collecting the supernatant, and obtaining a sea grape extract. The method for preparing the sea grape extract of the present invention not only fully extracts effective ingredients such as green algae polysaccharides, but also helps to reduce impurities, improve purity, and improve the activity of substances with antioxidant functions, is environmentally friendly and pollution-free, and reduces extraction costs.

The invention provides valerenic acid and an extraction method thereof, and belongs to the technical field of biochemistry. According to the method, valerianoic acid is extracted from valerian, valerianoic acid powder is obtained through first reflux extraction, impurity adsorption by activated carbon, dissolution by hot water and second reflux extraction in sequence, and the content of valerianoic acid reaches 6%-9%. According to the method for extracting the valerenic acid, provided by the invention, a chromatographic refining step in a traditional method is abandoned, expensive extraction equipment is not adopted, and low-boiling-point volatile organic solvents (such as petroleum ether, ethyl acetate and the like) are not used, so that the extraction cost of the valerenic acid is reduced, and the yield of the valerenic acid is also improved.

The invention discloses a preparation method and application of an acid-responsive aggregated carrot-source nano antioxidant, and belongs to the technical field of medical treatment. The carrot source nano antioxidant is prepared by five steps of cleaning, crushing, filtering, gradient centrifuging and extruding, can be applied to improvement of oxidative stress, promotion of good bone remodeling and effective treatment of osteoporosis, and has good practical application value.

This disclosure provides a method, apparatus, device, and storage medium for acquiring and applying an operations and maintenance (O&M) knowledge graph, which can be applied to the field of O&M service technology. The method includes: acquiring O&M resource data from a device information resource database; performing structured identification on the O&M resource data to obtain static O&M knowledge, which includes multiple first entities; acquiring real-time O&M service work order data; using a pre-trained knowledge extraction model to perform unstructured identification on the O&M service work order data to obtain dynamic O&M knowledge, which includes multiple second entities; acquiring historical relationships between the multiple first entities and the multiple second entities; inferring new relationships corresponding to the first entities in the O&M service work order data based on the first similarity between the multiple first entities, the second similarity between the multiple second entities, and the historical relationships; and obtaining an O&M knowledge graph based on the new relationships.

The present application belongs to the technical field of extraction and utilization of high-value components in industrial tail gas, and discloses a device and method for extracting hydrogen from industrial tail gas. The device comprises a heat exchanger, a high-temperature-resistant ceramic cylinder, a direct-current power supply and a cooler. Water vapor is used as a carrier gas to carry out the prepared hydrogen, which can reduce the electrolysis voltage and the power consumption for extracting hydrogen. The method of applying an external voltage is used to provide the driving force for hydrogen extraction, which can extract hydrogen from tail gas with low hydrogen concentration and improve the utilization rate of hydrogen resources. The device and method for extracting hydrogen from low-hydrogen-content high-temperature industrial tail gas are provided to solve the problem that hydrogen cannot be directly extracted from high-temperature industrial tail gas with low hydrogen concentration, resulting in a large amount of hydrogen resource waste. The device and method can directly extract hydrogen from high-temperature industrial tail gas with low hydrogen content by using high-temperature proton conductor ceramics, and water vapor is used as a carrier gas to carry the extracted hydrogen, which can reduce the power consumption for extracting hydrogen and efficiently prepare high-purity hydrogen.

This invention relates to the field of natural saponin separation and recombination, and particularly to a complex of saponin from *Gleditsia sinensis* and saponin from *Camellia oleifera* and its preparation method. The method includes: 1) extracting saponin from *Gleditsia sinensis* pericarp and *Camellia oleifera* cake, respectively, to obtain crude saponin solutions from *Gleditsia sinensis* and crude saponin from *Camellia oleifera*; 2) using macroporous adsorption resin AB-8 as a resin separation column to elute and remove impurities from the crude saponin solutions from *Gleditsia sinensis* and crude saponin from *Camellia oleifera*; 3) eluting the obtained saponin solutions from *Gleditsia sinensis* and *Camellia oleifera* with 25-35% ethanol solution, 40-50% ethanol solution, 55-65% ethanol solution, and 70-85% ethanol solution, respectively, to obtain saponin components from *Gleditsia sinensis* and saponin components from *Camellia oleifera*; 4) recombining the saponin components from *Gleditsia sinensis* and *Camellia oleifera* to obtain the complex of saponin from *Gleditsia sinensis* and *Camellia oleifera*. This invention can improve the purity and surface activity of natural saponins, overcoming the disadvantage of the high critical micelle concentration of *Camellia oleifera*.

The invention discloses a rectifying still residue extraction method, and belongs to the field of environmental protection and the technical field of hazardous waste harmless resource utilization. The technical problem that the recovery rate of residual NMP in the current rectifying still residues is not high is solved. The method comprises the following steps: soaking the residual lignosulfonate in an NMP rectifying still, adding an organic solvent for treatment, and then rectifying to obtain NMP. According to the method, the NMP is extracted by utilizing the boiling point difference between the organic solvent and the NMP rectifying still residue and temperature-controlled rectification, and the lignosulfonate is used as a water reducing agent to be compounded with water, so that the moisture required when the solid still residue is dissolved is reduced, and the flowability of the still residue after the organic solvent is added is improved. In addition, the organic solvent is matched with water and NMP (N-Methyl Pyrrolidone) in rectifying still residues, so that the azeotropic phenomenon is reduced. According to the method, the NMP rectifying still residues which cannot be recycled are pretreated with chemical reagents such as diethylene glycol and then rectified, so that a large amount of NMP is recovered, and the utilization efficiency of NMP is greatly improved.

The invention relates to a volcanic rock type uranium ore beneficiation and tailing discarding process, and belongs to the technical field of uranium mining and metallurgy. The technology comprises the steps that after raw ore is deslimed, a first batch of heavy liquid with the density gradient being 0.01-0.07 g / cm < 3 > and different density gradients is prepared, the first batch of heavy liquid is subjected to first-time heavy liquid separation, ore continues to be screened, then second-time heavy liquid separation is conducted, and the uranium grade and the yield of ore products with different particle size grades and different density grades are analyzed; the product yield B% of the ore with the uranium grade larger than or equal to 0.022 in each particle size level is determined; and dense medium cyclone separation is conducted, parameters of dense medium cyclone separation are controlled, so that the concentrate yield of dense medium separation of the ores of all particle size levels is (B + / -20)%, and finally low-intensity magnetic separation is conducted, and dense media are recycled. According to the method provided by the invention, a large amount of tailings can be discarded under the condition of coarse particles, the process handling capacity of subsequent uranium hydrometallurgy extraction is reduced, and the production cost is reduced.

The invention provides a helium-3 and helium-4 co-production system, and relates to the field of isotope separation. The helium-3 and helium-4 co-production system comprises a helium-4 liquefying device, a helium-3 enriching device and a helium-3 purifying device; the helium-4 liquefying device is used for liquefying helium to form liquid helium; the helium-3 enriching device is communicated with the helium-4 liquefying device, and the helium-3 enriching device is used for increasing the concentration of helium-3 in liquid helium; the helium-3 purification device is communicated with the helium-3 enrichment device and the helium-4 liquefaction device, and the helium-3 purification device is used for purifying helium-3. According to the helium-3 and helium-4 co-production system provided by the invention, helium-3 is continuously purified on the basis of helium extraction, and helium-3 can be extracted on a large scale at a relatively low cost. The main economic cost of the process is at the front end, namely the helium extraction part and the helium liquefaction part in the helium-rich natural gas, the cost of a helium-3 enrichment and helium-3 purification device is low, and the helium-3 extraction cost is greatly reduced on the whole.

The application relates to the field of biochemical technology, and particularly discloses a method for efficiently extracting green mung bean starch. The method comprises the following steps: obtaining green bean sprouts by ultrasonic-assisted soaking and germination culture of green mung beans; obtaining green bean sprout powder by drying, crushing and sieving the green bean sprouts; mixing the green bean sprout powder with a NaOH solution, oscillating, washing, centrifuging, filtering and obtaining pure starch, and finally drying, grinding and sieving to obtain germinated green mung bean starch. The extraction method combines ultrasonic pretreatment with a germination process, effectively improves the gelatinization characteristics of the starch, significantly improves the starch viscosity, thereby enhancing the applicability of the starch in food processing, and meanwhile, the nutritional and functional characteristics of the green mung bean starch are retained.

The application specifically discloses a method for recovering nickel, cobalt and manganese from a material containing nickel, cobalt and manganese, which comprises the following steps: a first leaching process, a pH adjusting process, a first solid-liquid separation process, a first impurity removal process, a second leaching process and a second impurity removal process. The method for recovering nickel, cobalt and manganese from the material containing nickel, cobalt and manganese provided by the application does not need to add oxidants and reducing agents, the pH value of the first mixed slurry obtained in the first leaching process is adjusted by adding alkali, the pressure filtration time of liquid-solid separation can be effectively reduced, the amount of auxiliary materials used in the subsequent impurity removal process can also be reduced, the solid manganese concentrate obtained after the second leaching process can be washed simply, the manganese concentrate can be directly sold, the subsequent manganese extraction process is omitted, the extraction cost of manganese is reduced, and the economic benefit is further improved. Therefore, the recovery method provided by the application has the characteristics of low cost and good economic benefit.

The invention discloses a natural compound fresh-keeping agent for crayfish as well as a preparation method and application thereof, mainly solves the technical problem that the fresh-keeping of the crayfish is difficult, and develops the application of the natural compound fresh-keeping agent in the fresh-keeping of the crayfish to the greatest extent and prolongs the shelf life of the crayfish by adjusting the formula of the compound fresh-keeping agent. The fresh-keeping agent provided by the invention can be used in the packaging and storage process of the crayfish, and can be used in a manner of soaking, spraying or film coating and the like. Experiments prove that by using the fresh-keeping agent, the fresh-keeping period of the crayfish can be remarkably prolonged, the quality loss is reduced, and meanwhile, the color, the taste and the nutritional value of the crayfish are kept. The using process is simple and easy to implement, and complex equipment and technologies are not needed. Meanwhile, by accurately controlling the use amount and the use mode of the preservative, the uniform distribution and the stability of the preservative in the crayfish can be ensured, so that the preservation effect and the control precision are improved.

The invention provides a method for extracting total saponins of rhizoma dioscoreae nipponicae. The method comprises the following steps: extracting the rhizoma dioscoreae nipponicae by adopting an ethanol reflux method to obtain a crude extract of the total saponins of the rhizoma dioscoreae nipponicae, and extracting the crude extract by using water-saturated n-butyl alcohol. The method also comprises the step of purifying the obtained extract by adopting a macroporous adsorption resin method. The extraction method disclosed by the invention is low in cost and simple to operate, the extract yield and the purity of the rhizoma dioscoreae nipponicae total saponins can be remarkably improved, and the extraction method disclosed by the invention has stability and reliability and is suitable for large-scale industrial production.

The invention provides a preparation method of a soft-shelled turtle anti-inflammatory active peptide beverage, and relates to the technical field of soft-shelled turtle food deep processing. According to the preparation method of the soft-shelled turtle anti-inflammatory active peptide beverage, the soft-shelled turtle anti-inflammatory active peptide beverage comprises the following components in percentage by mass: 2.0 to 3.0 percent of peptide powder, 5.5 to 7 percent of erythritol, 4.0 to 5.0 percent of concentrated fruit juice, 0.2 to 0.3 percent of anhydrous citric acid, 0.1 to 0.15 percent of CMC (Carboxy Methylated Cellulose), 0.1 to 0.2 percent of vitamin C, 0.01 to 0.02 percent of nicotinamide and the balance of hydrogen-rich water. According to the preparation method of the soft-shelled turtle anti-inflammatory active peptide beverage, bioactive polypeptide is obtained by enzymolysis of soft-shelled turtle meat, and in-vitro verification shows that the polypeptide has the advantages of good anti-inflammatory activity, low extraction cost, simple operation, environmental protection and the like. Compared with protein, the peptide is smaller in molecular weight, easier to absorb, capable of directly entering small intestines in a complete form, fast in energy supply and high in nutritional value, has the functions of resisting fatigue and enhancing human immunity, and has a good market prospect.

The application discloses a method for decomposing rare earth minerals to extract chlorinated rare earth and enriched cerium oxide, which comprises the following steps: 1) mixing the rare earth minerals with a first hydrochloric acid solution to obtain a hydrochloric acid dressing ore and a hydrochloric acid dressing solution; 2) mixing the hydrochloric acid dressing ore with a second hydrochloric acid solution to obtain a decomposition residue and an acid solution I; 3) mixing the decomposition residue with a first alkali solution to obtain an alkali cake I; dissolving the alkali cake I with an acid solution to obtain an acid solution residue and an acid solution II; 4) mixing the acid solution residue with a second alkali solution to obtain an alkali cake II; and dissolving the alkali cake II with an acid solution to obtain an enriched cerium dioxide and an acid solution III. The rare earth minerals are decomposed step by step by using the hydrochloric acid and the alkali solution to obtain the chlorinated rare earth salt solution and the cerium oxide, so that the extraction cost of the rare earth elements is effectively reduced; and the fluorine and the phosphorus can be effectively separated and recovered.

The invention relates to a stirring machine, and relates to the technical field of stirring equipment, the stirring machine comprises a shell, the upper end of the shell is provided with a feed port, the shell is internally provided with a stirring mechanism, the lower end of the shell is provided with a liquid discharge port and a waste discharge port, and the liquid discharge port and the waste discharge port are respectively provided with a sealing assembly. The method has the effects that the zinc resource is conveniently extracted from the zinc slag, and the cost is reduced.

This invention discloses a sealing and recovery device and method for a multi-channel gas extraction pipe, belonging to the field of gas extraction device and recovery technology. The device includes a bladder, a multi-channel gas extraction pipe, a protective pipe, and a recovery device. The multi-channel gas extraction pipe has a cross-shaped partition inside, forming four channels: two gas extraction channels, a grouting material channel, and a liquid injection channel. The bladder has a cylindrical structure, with two bladders respectively fitted onto the outer walls of the multi-channel gas extraction pipe at both ends. The bladder contains several sets of buoyancy plates, each set connected in series by two traction ropes, with both ends of the traction ropes connected to the inner wall of the bladder. This invention integrates the grouting material pipeline, the gas extraction pipeline, and the liquid injection channel into one unit, achieving multiple uses with a single pipe and thus saving economic costs. After the grouting sealing material solidifies, the multi-channel gas extraction pipe and the bladder can be recovered, realizing the recovery and multiple uses of the gas extraction pipe and the bladder within the solidified sealing material.

The invention relates to the field of hydrometallurgy, and particularly discloses a method for efficiently extracting lithium from a lithium-containing mother solution under the catalysis of carbon dioxide without alkali consumption, which comprises the following steps: S1, introducing carbon dioxide into the lithium-containing mother solution to adjust the pH value of the lithium-containing mother solution; s2, mixing a polyfluoro-substituted diketone extraction agent, a synergistic extraction agent and a diluent to prepare an extraction agent; s3, mixing the prepared extracting agent with the lithium-containing mother liquor with the adjusted pH value, and extracting according to a certain phase ratio to obtain raffinate and loaded organic matter; carrying out washing and reverse extraction on the loaded organic matter to obtain lithium-containing reverse extraction liquid; and S4, preparing battery-grade lithium sulfate or battery-grade lithium hydroxide or battery-grade lithium carbonate. The method adopts carbon dioxide to adjust pH, does not need to consume a large amount of acid and alkali, can prepare high-purity battery-grade lithium carbonate or lithium hydroxide monohydrate and battery-grade lithium sulfate products by recycling carbon dioxide generated in the extraction process, and has the advantages of easy control, simple operation, short process flow and high lithium recovery rate of the whole extraction system. The method has breakthrough significance in the battery recovery industry.

Embodiments of the present application disclose an image information extraction method and device. The image information extraction method extracts information of a to-be-recognized image by calling a target basic extractor according to configuration information to determine each target text in the to-be-recognized image after obtaining the to-be-recognized image and the configuration information. The configuration information is used to represent a calling requirement for at least one target basic extractor, and each target basic extractor is used to extract a target text of a corresponding information type. The method can reduce the image information extraction cost and improve the image information extraction efficiency.