511 results about "Clay minerals" patented technology

Processes for extracting lithium from a clay mineral and compositions thereof are described. The extraction process includes providing a clay mineral comprising lithium, mixing a cation source with the clay mineral, performing a high-energy mill of the clay mineral, and performing a liquid leach to obtain a lithium rich leach solution.

The invention relates to the technical field of land improvement, in particular to an alginic acid type multifunctional long-acting soil conditioner and a preparation method and application of the alginic acid type multifunctional long-acting soil conditioner. The core particle layer comprises an organic material, nano silicon, calcium magnesium polyphosphate, magnesium hydride, ammonium borate, rhamnose and an adhesive, and the slow release layer comprises clay minerals and alginate; the mass ratio of the clay mineral to the alginate to the organic material to the calcium magnesium polyphosphate to the nano silicon to the magnesium hydride to the ammonium borate to the rhamnose to the binder is controlled within a certain range. The soil conditioner provided by the invention is good in slow release performance, can release effective components durably and slowly, and has multiple effects of improving soil quality, providing nutrition, promoting crop growth, improving resistance and the like; the problems of soil acidification, heavy metal pollution, micro-plastic pollution, pesticide pollution, antibiotic pollution and the like in agricultural production can be effectively solved.

The invention provides a dump leaching method for improving the leaching rate of gold ore, and belongs to the technical field of mineral processing. The method comprises the following steps: firstly, separating minerals into oversize products and undersize products; mixing sodium carboxymethyl cellulose, bentonite and ferrous sulfate to obtain a mixture, and granulating the undersize product by using the mixture as a binder; and mixing the undersize product particles with the oversize product, and carrying out cyanide-free dump leaching. According to the method, through graded granulation and heap building, the problem that heap building permeability is poor due to the fact that the gold ore contains many clay minerals is solved. In the granulation stage, ferrous hydroxide colloid generated by hydrolysis of ferrous sulfate in the binder can assist ore particle agglomeration, and particle stability is enhanced; during subsequent cyanide-free dump leaching, ferrous sulfate can be used as an auxiliary reducing agent and a catalyst in a thiourea gold leaching system to promote oxidation and dissolution of gold; meanwhile, ferrous ions can adjust the oxidation-reduction potential of a system, so that the thiourea gold leaching reaction is in a more favorable potential interval, the oxidation efficiency of thiourea is improved, invalid decomposition of thiourea is reduced, and therefore the use amount of thiourea and the use amount of agents are reduced.

The invention relates to the technical field of carbon dioxide sequestration and shale gas development, and particularly discloses a shale micro-nano pore multiphase multicomponent competitive adsorption data determination method and device, and the method comprises the steps: obtaining a shale core sample of a target area, and determining the type and relative content change characteristics of surface functional groups of the shale core sample; key structures and force field parameters of shale clay minerals in a target block are collected, and a shale clay mineral molecular model is established; establishing a plurality of fluid molecular models; establishing slit models, and establishing a multiphase fluid system model between the slit models to obtain a stable configuration; applying an external electric field to the stable configuration, and performing molecular dynamics calculation to obtain molecular trajectory coordinates and dynamics information of the multi-phase multi-component fluid; and calculating competitive adsorption data of the shale micro-nano pore multi-phase multi-component fluid under the action of the electric field. According to the scheme, the occurrence state and the competitive adsorption behavior of the shale micro-nano pore multi-phase multi-component fluid under the action of the electric field can be disclosed from the molecular scale.

The invention discloses a preparation method of a photo-thermal super-hydrophobic coating with excellent anti-icing / deicing performance in a low-temperature and high-relative-humidity environment, which comprises the following steps of: firstly, growing photo-thermal Cu-MOF (Metal Organic Framework) nano particles on the surfaces of fibrous clay mineral nano particles with low heat conductivity coefficient in situ to construct composite photo-thermal particles with a two-stage nano / nano structure; the preparation method comprises the following steps: preparing nano-particles, then carrying out low surface energy modification on the nano-particles, introducing a low-heat-conductivity-coefficient binder, inducing the binder to generate phase separation through a non-solvent to form a micron-scale binder / low-surface-energy nano-particle aggregate, and finally, spraying to construct the photo-thermal super-hydrophobic coating with a three-level micro / nano / nano structure. The three-level micro / nano / nano structure of the coating simultaneously endows the coating with excellent photo-thermal performance in a low-temperature and high-relative-humidity environment and Cassie-Baxter state stability of liquid drops on the surface of the coating, so that the coating has excellent passive anti-icing / frosting and active deicing / defrosting performance in the environment. The low heat conduction characteristic of the coating further inhibits heat exchange between the base material and water drops, so that the passive anti-icing / frosting performance of the coating is further improved. In addition, the invention also has the advantages of simple preparation method, large-area preparation and the like, and lays a solid foundation for the practical application of the photo-thermal super-hydrophobic anti-icing coating.

The invention discloses a method for preparing an adsorbent from clay minerals and carbide slag, and belongs to the technical field of deep processing of natural nonmetallic minerals and preparation of heavy metal adsorption functional materials. According to the method, natural clay and carbide slag serve as raw materials, the composite adsorption material containing various metal active sites is prepared through a solid-phase reaction, and the composite adsorption material is suitable for efficient removal of high-concentration and low-concentration heavy metal ions. The raw materials are cheap and easy to obtain, the preparation process is simple and efficient, and the product has excellent performance, wide application and wide prospects.

The invention discloses a composite heavy metal adsorbent synthesized through mineral conversion and a preparation method of the composite heavy metal adsorbent, and belongs to the technical field of deep processing of natural nonmetallic minerals and preparation of heavy metal adsorption functional materials, and the main preparation method comprises the following steps: S1, crushing and crushing natural clay minerals, and sieving with a 80-mesh sieve to obtain mineral powder; s2, mixing the obtained mineral powder with a calcium compound, and carrying out ball milling; s3, adding a boron compound, and continuing ball milling; s4, adding water into a solid material obtained by ball milling according to a solid-to-liquid ratio of (1: 5)-(1: 20), putting into a microwave hydrothermal reaction kettle, adding an organic auxiliary agent, carrying out gradient heating to 100-200 DEG C, reacting for 30-120 minutes, then naturally cooling to room temperature, separating, drying and crushing; according to the invention, natural clay raw ore is taken as a raw material, and the borate-silicate composite adsorption material is prepared in a preparation mode of combining solid-phase reaction and microwave hydrothermal treatment, so that high-concentration and low-concentration heavy metal ions are efficiently removed.

The invention relates to the technical field of oil and gas reservoirs, and discloses a carbon dioxide dynamic water-rock reaction measuring device and method.According to the method, five groups of rock samples from the same well and with the same well depth are adopted for a parallel control experiment, the five groups of rock samples correspond to five reaction times set by the experiment respectively, and after each reaction is finished, the reaction time is calculated; according to the method, the porosity, permeability, mineral components and clay mineral components of corresponding rock samples are measured, the fluid ion concentration after the reaction is measured and analyzed, the carbon dioxide burying amount is calculated, experiments of other groups are not interfered, the reaction continuity and the reaction system sealing performance can be guaranteed, and the stratum reaction environment can be simulated more truly.

The invention discloses a method for preparing active kaolinite-series clay through synergistic activation and application of the active kaolinite-series clay as an auxiliary cementing material, and belongs to the technical field of auxiliary cementing material production.On the basis of thermal activation, the kaolinite-series clay is subjected to synergistic treatment in combination with mechanochemical activation, the advantages of thermal activation and mechanochemical activation are fully exerted, and the active kaolinite-series clay is prepared. The activity of clay minerals and non-clay minerals in the kaolinite series clay is improved to the maximum extent, low-carbon activation of the kaolinite series clay is achieved, and a technical guarantee is provided for preparation of auxiliary cementing materials (SCMs).

The invention relates to the field of ardealite treatment, in particular to a compound preparation for curing fluorine and phosphorus in ardealite and application thereof.The compound preparation is prepared from, by mass, 20-40 parts of modified clay minerals, 10-15 parts of clay minerals, 1-2 parts of coagulant, 0.1-0.6 part of auxiliaries and 180-200 parts of deionized water. The modified clay minerals are hydroxyl iron modified mixed clay minerals, the mixed clay minerals are obtained by mixing maleic anhydride grafted clay minerals and polyacrylic acid-sodium acrylate grafted clay minerals, and the composite preparation provided by the invention can greatly increase the removal rate of fluorine and phosphorus in phosphogypsum; wherein the modified clay mineral and the clay mineral have a synergistic effect, a three-dimensional structure with large porosity, large specific surface area and large surface active group content can be formed in a system, phosphorus and fluorine in phosphogypsum can be adsorbed to the maximum extent, and the modified clay mineral and the clay mineral have a wide application prospect.

The present invention discloses a preparation method of a photothermal super-hydrophobic coating with excellent anti-icing / de-icing performance under a low temperature and high relative humidity environment, first by in situ growth of photothermal Cu-MOF nanoparticles on the surface of low thermal conductivity fibrous clay mineral nanoparticles, constructing a two-level nano- / nano-structured composite photothermal particle, which is then subjected to low surface energy modification and introduced into a low thermal conductivity binder, and a binder is induced to phase separate to form a micron-scale binder / low surface energy nanoparticle aggregate by a non-solvent, and finally a photothermal super-hydrophobic coating with a three-level micro- / nano- / nano-structure is constructed by spraying. The three-level micro- / nano- / nano-structure of the coating simultaneously gives the coating excellent photothermal performance and the Cassie-Baxter state stability of the droplet on the coating surface under a low temperature and high relative humidity environment, so that it has excellent passive anti-icing / frosting and active de-icing / defrosting performance in this environment. The low thermal conductivity of the coating further suppresses the heat exchange between the substrate-water droplets, so that the passive anti-icing / frosting performance of the coating is further improved. In addition, the present invention has the advantages of simple preparation method and large-area preparation, laying a solid foundation for the practical application of photothermal superhydrophobic anti-icing coatings.

The invention discloses a construction method and application of a mixed-dimension attapulgite clay-based porous separation membrane, firstly, mixed-dimension attapulgite clay acid etching powder is added into a saponin plant extracting solution to obtain a suspension, then the suspension is mixed with a sodium alginate / glycerol aqueous solution, a Pickering foam template method is adopted to obtain a membrane forming solution, and the membrane forming solution is dried to obtain the mixed-dimension attapulgite clay-based porous separation membrane. And carrying out film casting, calcium crosslinking and carboxylation treatment to obtain the porous separation membrane. On the basis of the rod / sheet mixed dimension structure advantage of clay minerals and the synergistic stabilization effect of plant derivatives, the interfacial film strength, functional group spatial arrangement and network structure are efficiently regulated and controlled, the separation film with a multi-stage communicating pore structure and excellent mechanical performance and separation efficiency is constructed in a green mode, and the separation efficiency is improved by combining film layer stacking and acid pickling enrichment. A high-efficiency uranium separation / enrichment method is developed, and an innovative solution is provided for uranium pollution prevention and control and resource enrichment by a membrane separation technology.

The invention relates to the technical field of hemostatic materials, in particular to a clay mineral-based aerogel hemostatic material and a preparation method thereof. The invention discloses a preparation method of a clay mineral-based aerogel hemostatic material. The preparation method comprises the following steps: S1, uniformly dispersing clay minerals and sodium alginate in deionized water respectively, and stirring to prepare slurry and sol for later use; s2, uniformly mixing the slurry and the sol, preparing a mixed sol, introducing the mixed sol into a mold, dropwise adding a proper amount of a metal salt solution, and standing to obtain a standing product; s3, freeze-drying the standing product to obtain the clay mineral-based aerogel hemostatic material. The composite material disclosed by the invention combines the adsorbability of clay and the biocompatibility of sodium alginate, has excellent biocompatibility and high safety, and shows excellent performance in the aspects of absorbing and concentrating tissue fluid, and the composite aerogel can quickly activate platelets and stimulate blood coagulation factors to efficiently coagulate blood, and has efficient hemostasis capability.

The invention relates to the technical field of ceramic rock plate production, in particular to soft light skin feeling glaze, a soft light skin feeling ceramic rock plate with a digital three-dimensional effect and a preparation method thereof.According to the soft light skin feeling ceramic rock plate with the digital three-dimensional effect, the formula of a blank, the formula of soft light ground glaze and the formula of soft light cover glaze all belong to clay minerals and are good in plasticity, and meanwhile a toughening composition is added into the blank; the strength and toughness of the ceramic rock plate blank can be greatly enhanced, the toughening composition has certain cohesiveness, a bridge effect can be formed among ceramic particles, and the binding force among the particles is enhanced. In the green body drying process, the bonding effect is beneficial to keeping the relative position of particles and reducing the movement and agglomeration of the particles, so that a more uniform and compact microstructure is formed, the toughness of the ceramic rock plate is improved, the stress in the sintering process is effectively eliminated, the sintering qualification rate is improved, cracking is reduced, and the quality of the ceramic rock plate is improved. Wide application prospects are realized.

The invention discloses a method for analyzing diagenesis of clay minerals by combining physical simulation and numerical simulation, which comprises the following steps: selecting clay single minerals, and preparing a formation water solution; respectively filling the clay single mineral and the stratum water solution into a plurality of reaction kettles, and carrying out diagenesis physical simulation; establishing a numerical simulation model with the same physical simulation experiment condition, and outputting mineral and ion data; according to mineral and ion data, fitting a physical simulation experiment result and a numerical simulation result, and determining a mineral corrosion rate; and establishing a geologic model by taking the mineral dissolution rate as a reference, and performing clay single mineral diagenesis simulation within a geological time scale. According to the method, numerical simulation parameters are constrained by physical simulation experiment results, and comparison and verification of numerical simulation and physical simulation results are realized by adjusting mineral corrosion kinetic parameters in real time, so that the numerical simulation experiment results are close to actual conditions.

The invention belongs to the technical field of rubber auxiliaries and rubber tracks, and particularly relates to a coupling agent composition for inhibiting rubber appearance flooding and application of the coupling agent composition in the rubber tracks. The coupling agent composition comprises the following components in percentage by weight: 15%-30% of coupling agent, 1%-15% of metal chloride and 70%-85% of clay mineral. Different from a microcapsule technology only aiming at anti-aging agent migration, the coupling agent composition disclosed by the invention can effectively capture various types of color-flooding source substances including carbon black residues, anti-aging agents, antioxidants and the like by starting from common characteristics (containing unsaturated bonds, heteroatoms and aromatic structures) of color-flooding small molecules and through the synergistic effect of the coupling agent and metal ions, so that the color-flooding source substances can be effectively captured. And the method has wide applicability. In addition, a composite system composed of the clay, the coupling agent and the metal chloride can improve the bonding strength of the rubber and a track framework material, and is suitable for being applied to a heavy-load rubber track.

The invention discloses a cationic self-assembly high-temperature-resistant clay stabilizer and a preparation method thereof.The preparation method sequentially comprises the following steps that firstly, N-methylbenzylamine, diethylenetriamine and epichlorohydrin are subjected to a substitution reaction, and polyquaternary ammonium containing quaternary ammonium ions and benzyl is prepared; then carrying out a reaction on the mono6-amino-beta-cyclodextrin and epoxy chloropropane, so as to prepare a beta-cyclodextrin-epoxy chloropropane condensation compound; and finally, blending and assembling the two substances to generate the cation assembled compound with relatively high cation degree and high temperature resistance. Polyquaternary ammonium containing quaternary ammonium ions and benzyl in the cation assembly compound provides quaternary ammonium cations combined with anionic charges on the surface of stratum clay minerals on one hand, and provides benzene rings combined with beta-CD holes of the beta-cyclodextrin-epichlorohydrin condensation compound on the other hand. The prepared clay stabilizer has good high temperature resistance, has a good clay anti-swelling effect under a strong alkaline condition, and can improve the crude oil recovery rate.

The invention relates to the technical field of adsorbents, in particular to a modified mineral-based composite active coke adsorbent as well as a preparation method and application thereof. The preparation method comprises the following steps: respectively crushing, sieving and drying an active coke raw material and a modified clay mineral, mixing according to a ratio, adding a binder, fully kneading and uniformly mixing, carrying out compression molding, drying, carbonizing and activating to obtain the modified mineral-based composite active coke adsorbent. The modified clay mineral is prepared by dipping a natural clay mineral in a modifier solution, washing, carrying out suction filtration and drying; and the modifier is one or more of acid, transition metal salt, acidic salt or calcium salt. In the preparation process of the active coke material provided by the invention, the modified clay mineral has the effects of improving the yield of an active coke product, enhancing the adsorption performance of the active coke and improving the pore diameter of the active coke; the modified mineral-based composite active coke adsorbent disclosed by the invention has the characteristics of rich pore structure, large adsorption capacity, high efficiency, rich surface functional groups and the like.

The invention relates to the technical field of semi-arid mining area land reclamation and ecological restoration, and discloses a semi-arid mining area reclamation double-surface-soil key layer and a refined construction method thereof.The semi-arid mining area reclamation double-surface-soil key layer comprises a wind-erosion-resistant key layer and a water and fertilizer maintaining key layer which are arranged from top to bottom; the anti-wind-erosion key layer comprises a coarse particle windproof layer and a fine particle cementing layer which are arranged from top to bottom; the water and fertilizer maintenance key layer is prepared from the following raw materials: fine sand or original sandstorm surface soil, a clay mineral-based physical structure regulator, an organic water-retaining agent and a biological enhancement matrix material; the raw materials of the coarse particle windproof layer comprise gravel and coarse sand; the raw materials of the fine particle cementation layer comprise fine sand or original sandstorm surface soil, a clay mineral-based physical structure regulator and an organic water retention capacity cementing agent. The reclamation double-surface soil key layer for the semi-arid mining area can effectively resist natural erosion, improve the soil structure, improve the water and fertilizer retention capability and promote the recovery of local host plants.

The present invention discloses a method for preparing a hunting-type fruit and vegetable fresh-keeping material, comprising the following steps: (1) dispersing clay minerals in an organic solvent and stirring and mixing at high speed to obtain a clay mineral dispersion; (2) preparing carbon quantum dot-modified titanium dioxide nanosheets; (3) adding carbon quantum dot-modified titanium dioxide nanosheets to the clay mineral dispersion, and adding metal oxides, metal salts and dispersants and stirring and mixing at high speed, calcining, adding organic antibacterial agents, ball milling, and drying to obtain a dispersion. Also disclosed are a fruit and vegetable fresh-keeping material prepared by the above method, a hunting-type fruit and vegetable dormant fresh-keeping film prepared by the fruit and vegetable fresh-keeping material, and the use of the above fruit and vegetable fresh-keeping material and fresh-keeping film in fruit and vegetable preservation.

Disclosed in the present application are a method for determining the fault sealing capacity of CO2 geological storage, and a related apparatus. The method specifically comprises: determining whether the lithology of a caprock corresponding to a reservoir consisting of CO2 satisfies preset conditions, the preset conditions comprising that the lithology is shale, and the proportion of clay minerals satisfies a preset range; when the lithology of the caprock does not satisfy the preset conditions, calculating a displacement pressure difference between the reservoir and a fault formed between the caprock and the reservoir; and when the displacement pressure difference is not greater than zero, determining a caprock thickness, a reservoir thickness and a fault displacement on the basis of a fault profile diagram; and, on the basis of a numerical value sorting relationship of the caprock thickness, the reservoir thickness and the fault displacement, determining the fault sealing capacity of CO2 geological storage, the fault sealing capacity comprising: a fault being completely sealed, a fault being partially sealed and a fault being unsealed. Therefore, the present application finally determines the fault sealing capacity of the CO2 geological storage.

The invention relates to a 200-grade sludge fly ash ceramsite composition based on solid waste and a manufacturing method thereof. The 200-grade sludge fly ash ceramsite composition comprises the following components in percentage by weight: 38-50% of shale, 30-40% of sludge and 20-25% of fly ash, wherein the shale is muddy shale which contains more than 40% of the total weight of clay mineral components and is mainly composed of red shale, black shale and green shale and auxiliary materials of kaolin and bentonite; the 200-grade sludge fly ash ceramsite is prepared from solid waste, solid waste resources are fully utilized, the process is simple, and the cost input is low.

The present invention relates to the technical field of sediment or sludge treatment of a water body, and provides a solidification material and a use thereof. The solidification material consists of the following components in percentage by mass: 30% of a sediment flocculant, 20% of a high-strength and high-water-resistant earth consolidator, 30%-40% of calcium bentonite, 5%-15% of a clay mineral, and 5% of an engineering admixture. When the solidification material is used in the sediment or sludge treatment of the water body, pollutants in sediments can be well immobilized, and as tested, no leaching of the pollutants occurs after immersion in the water body. Moreover, the usage amount of the solidification material is significantly reduced compared to that of a conventional solidification material, so that the impact on the storage capacity of the water body can be effectively reduced, and the construction cost is also saved.

The embodiment of the invention relates to a method or a device for identifying by using electronic equipment, in particular to a method for identifying exudation type sandstone uranium ore, which comprises the following steps: S10, acquiring an ore sample of a to-be-identified area, S20, analyzing the ore sample according to the output position and color in the vertical direction and the horizontal direction, and S20, analyzing the output position and color of the ore sample according to the output position and color of the to-be-identified area and the output position and color of the to-be-identified area. S30, analyzing the uranium mineral symbiotic combination in the ore sample; s40, analyzing the clay mineral combination in the ore sample; s50, analyzing an element combination related to the uranium element in the ore sample; and according to the analysis, determining that the to-be-identified region is the exudation type sandstone uranium mine. According to the identification method provided by the embodiment of the invention, the exudation type sandstone uranium ore formed by exudation mineralization can be systematically identified, so that the exudation type sandstone uranium ore prospecting can be guided, and help is provided for searching new uranium ore resources.

The invention relates to an evaluation and optimization method for continental shale oil dessert intervals, which comprises the following steps: calculating an oil production evaluation coefficient of each sample according to the organic carbon content and petroleum potential parameters; calculating a reservoir evaluation coefficient of each sample according to the shale porosity; calculating an oiliness evaluation coefficient of each sample according to the free oil quantity; calculating a compressibility evaluation coefficient of each sample according to the quartz content, the carbonate mineral content and the clay mineral content; calculating the shale oil dessert layer segment coefficient of each sample according to the oil-generating property evaluation coefficient of each sample, the storage property evaluation coefficient of each sample, the oiliness evaluation coefficient of each sample and the compressibility evaluation coefficient of each sample, and performing data distribution proportion analysis on the shale oil dessert layer segment coefficients of all the samples in the plurality of samples to obtain the shale oil dessert layer segment coefficient of each sample. And determining an evaluation grading standard to complete well drilling shale oil dessert interval evaluation optimization, so that technical support can be provided for realizing high yield and stable yield of a shale oil well.

The invention discloses a shale gas exploration method, device, equipment and medium, and relates to the technical field of shale gas exploration and development, and the shale gas exploration method comprises the following steps: obtaining respective mass fractions of long quartz minerals, clay minerals and carbonate minerals of a shale reservoir in each well section of a current well, determining the maximum difference degree index, the local onrush characteristic index and the relative change amplitude index of the corresponding mineral content of the shale reservoir in each well section based on each mass fraction, and constructing a comprehensive heterogeneity index representing the shale reservoir in each well section; the porosity, the water saturation and the total gas content of the shale reservoir in each well section are obtained, so that the initial sweet spot grade of each well section is divided; performing grade correction on the initial dessert grade of the corresponding well section according to each comprehensive heterogeneity index to obtain a target dessert grade corresponding to each well section after correction; and determining a well track optimization scheme and a fracturing design scheme based on the target dessert grade so as to carry out corresponding shale gas exploration operation. And accurate shale gas exploration is realized.

The invention discloses a soil improvement method for harmlessly treating phosphogypsum and improving physical structure, which comprises the following steps: uniformly mixing granular red mud, alkaline clay minerals and carbide slag with powdery phosphogypsum raw slag, maintaining the field moisture capacity of the phosphogypsum to be 40-60%, and aging for 3-7 days under natural conditions, the phosphogypsum is subjected to harmless treatment, meanwhile, aggregate formation is promoted, the physical structure of the phosphogypsum is improved, and harmless phosphogypsum matrix soil is obtained; wherein the pH value of the red mud is 10.5-12.8 and the red mud accounts for 1-2% in percentage by mass of the ardealite raw slag powder; the pH value of the alkaline clay mineral is 8.0-10.5, and the alkaline clay mineral accounts for 0.2-1.2%; the proportion of the carbide slag is 0.5-1.5%. After being improved for 3-7 days, the plant can be used for planting pioneer plants such as ryegrass, trifolium repens, festuca arundinacea, cynodon dactylon and elymus dahuricus; especially, slag, bentonite, polyacrylamide, biomass, manure and soil bacterial suspension are also added, so that the physical structure and physicochemical properties of soil are further improved, and soilless ecological restoration of the ardealite storage yard is realized.

The invention provides a lithiated clay mineral PVDF-based composite solid-state electrolyte membrane, a preparation method and application thereof, and a quasi-solid-state battery, and belongs to the technical field of solid-state lithium batteries. The preparation method comprises the following steps: mixing lithium halide, clay minerals and water for the first time, and carrying out ion exchange reaction to obtain lithiated clay minerals; mixing lithiated clay minerals, PVDF, organic lithium salt and an organic solvent for the second time to obtain composite slurry; and applying the composite slurry to the surface of a substrate, and carrying out thermocuring to obtain the lithiated clay mineral PVDF-based composite solid electrolyte membrane. The lithiated clay mineral is introduced into a mixed system of PVDF and organic lithium salt, so that the crystallinity of PVDF can be effectively reduced, an amorphous region is increased, conversion of PVDF crystals to beta-type PVDF is promoted, and the dissociation process of the lithium salt in the electrolyte is promoted; meanwhile, the lithiated clay mineral is introduced, so that the ionic conductivity can be obviously improved, an electrochemical window is widened, the mechanical property is improved, and the growth of lithium dendrites is inhibited.

The invention belongs to the field of carbon dioxide geological sequestration and oil-gas field development, and relates to a shale carbon dioxide adsorption expansion damage experiment method considering a hydration state, which comprises the following steps: processing a shale sample according to requirements; the shale is subjected to constant-humidity regulation and control pretreatment, and in the process, different relative humidity environments can be used for pretreatment, so that the influence of different clay mineral hydration interlayer spacing states on adsorption expansion is obtained; soaking the pretreated shale in supercritical carbon dioxide, adsorbing the sample when the temperature and pressure conditions reach a set value, soaking until the rock sample reaches adsorption saturation, and treating by using carbon dioxide with different pressures and temperature gradients; according to collection of sample microstructure and mechanical data, damage can be treated through crack initiation position comparison, porosity and gray scale quantitative analysis and macro-mechanical parameter evolution. The method provides an experimental method for carbon dioxide geological sequestration safety assessment and shale gas fracturing parameter optimization.

The invention belongs to the technical field of shale oil and gas resource evaluation, and discloses a shale organic pore content calculation method considering pore fractal characteristics. The method comprises the following steps: carrying out a back scattering two-dimensional large-area scanning electron microscope experiment on a shale sample in a research area to obtain an organic pore surface porosity; carrying out a total organic carbon determination experiment on the shale sample in the research area to obtain the TOC content of the sample; carrying out a mineral content determination experiment on the shale sample in the research area to obtain the clay mineral content of the sample; carrying out a low-temperature nitrogen adsorption experiment on the shale sample in the research area, and calculating to obtain the fractal dimension of the sample; and establishing a shale organic pore content calculation model through multivariate linear fitting by taking the organic pore surface porosity as a dependent variable and TOC, clay minerals and fractal dimensions as independent variables. According to the method, the content of the organic pores is quantitatively calculated without a scanning electron microscope, the relationship between the micro-pore structure and the development of the organic pores can be effectively represented, and the calculation precision of the model can be effectively improved.