140 results about "Kaolinite" patented technology

The invention relates to the technical field of coal gangue resource utilization, in particular to a magnetic coal series kaolin hydrogel adsorbing material as well as a preparation method and application thereof. The preparation method of the material specifically comprises the following steps: carrying out ultrafine grinding, sieving and grading on coal gangue ore to obtain a coal series kaolinite material; further performing magnetic separation to obtain coal series kaolinite iron-rich tailings; further performing magnetizing roasting in a reducing atmosphere to obtain magnetic coal series kaolin; the preparation method comprises the following steps: compounding magnetic coal series kaolin with sodium alginate and chitosan by adopting a gel coating method, dropwise adding a calcium chloride solution for crosslinking, and freeze-drying to obtain the magnetic coal series kaolin hydrogel material. The preparation method is simple, and the obtained adsorption material has the characteristics of low cost, large adsorption capacity, high adsorption rate, high selectivity, excellent cyclic utilization performance and the like.

The invention discloses a spodumene concentrate resourceful treatment method which comprises the following steps: carrying out wet treatment on spodumene acid clinker to prepare lithium-removed filter residues and leachate; carrying out neutralization treatment and desulfurization treatment on the leachate to obtain a lithium-containing purified solution, gypsum and iron oxide red, and carrying out lithium extraction treatment on the lithium-containing purified solution to obtain a lithium salt and mirabilite; the lithium-removed filter residues are treated through a process combining a beneficiation method and a chemical method, and water glass, nano kaolinite, ceramsite aggregate and tantalum-niobium concentrate are obtained. According to the method, whole-process slag-free production of the spodumene concentrate is achieved, and meanwhile the lithium-containing compound with the high purity and the high quality is obtained; and various valuable products can be obtained.

The invention provides an intelligent recognition and separation system, method and device for coal series kaolinite in coal gangue, and belongs to the field of coal gangue separation. The problems that in an existing coal gangue separation technology, coal series kaolinite recognition and separation efficiency is low, and precision is poor are solved. The system comprises a multi-modal data acquisition and processing module which is used for acquiring and processing a ray image, a texture image and the thickness of the coal gangue to obtain a comprehensive feature vector containing the gray scale, the texture and the thickness data of the coal gangue; the coal series kaolinite evaluation label establishing module is used for establishing an evaluation label; the image input classification algorithm module is used for taking the comprehensive feature vector as input, taking the evaluation label as a classification label, training a classification identification model and outputting a classification result; the control and separation execution module is used for generating a separation instruction according to the classification result and separating coal series kaolinite from the common coal gangue; the method is applied to separation of coal series kaolinite in coal gangue.

The invention provides a two-dimensional layered kaolinite nanofiltration membrane, and a preparation method and application thereof, and the preparation method comprises the following steps: mixing kaolinite powder and an intercalator according to a first solid-to-liquid ratio, heating, stirring, carrying out intercalation reaction completely, and carrying out solid-liquid separation to obtain a solid kaolinite intercalation compound; mixing the kaolinite intercalation compound with water according to a second solid-to-liquid ratio, adjusting the pH value of the mixed solution to 9-13, and carrying out dispersion treatment to obtain a kaolinite nanosheet dispersion liquid; enabling the kaolinite nanosheet dispersion liquid to penetrate through the porous basement membrane, and depositing kaolinite nanosheets in the kaolinite nanosheet dispersion liquid on the porous basement membrane to obtain the two-dimensional layered kaolinite nanofiltration membrane; the operation steps are simple, no complex equipment or a large amount of organic solvent is used, and the method conforms to the concept of green chemistry. The prepared two-dimensional layered kaolinite nanofiltration membrane can be used in various fields of water treatment, organic solvent separation and the like, and has a wide application prospect.

The invention discloses a flame-ablation-resistant fireproof coating as well as a preparation method and application thereof, and belongs to the technical field of fireproof coatings. The coating comprises 20-60 parts of a film forming matter, 5-25 parts of indirect ceramic forming filler, 10-30 parts of an acid source and 5-15 parts of a gas source, the indirect ceramic forming filler comprises any one or more of feldspar, illite, kaolinite, montmorillonite, calcium silicate and magnesium silicate. The indirect ceramic forming filler is decomposed into a ceramic forming material at high temperature, and at the moment, the fireproof coating expands to form an expansion layer; the ceramic forming material in the expansion layer further reacts under the action of high-temperature flames, especially the ceramic forming material outside the expansion layer facing high temperature, to generate a ceramic substance, so that the surface ceramization of the fireproof coating is controllable, and the ceramization effect of the expansion layer after the coating is fully expanded is achieved; the problem that the fireproof performance is reduced due to the fact that a coating expansion layer forms a hard shell layer too early when the high-temperature-resistant performance of the fireproof coating is improved through a ceramic method is solved.

The invention relates to the technical field of fracturing proppants, in particular to a method for preparing a low-density ceramsite sand fracturing proppant by taking magnesium oxide as a raw material, kaolinite coal gangue and solid waste ceramsite sand powder are adopted as main raw materials of inner core particles, magnesium oxide is introduced to reduce the density of the proppant, and the magnesium oxide acts with manganese oxide, potassium feldspar and dolomite to reduce the sintering temperature; the composite biomass-based porous activated carbon is used as a framework; the modified epoxy resin, the composite biomass-based porous activated carbon and the curing agent are used for preparing a self-repairing high-temperature-resistant, hydrophobic, wear-resistant and corrosion-resistant outer-layer coating film, so that the ceramsite sand fracturing propping agent is endowed with durable high flow conductivity; the self-repairing polyurethane is prepared by taking hydroxyl-terminated long alkyl chain Schiff base as a modifier in a prepolymerization process, taking polypropylene carbonate glycol, polytetrahydrofuran ether glycol and isophorone diisocyanate as raw materials, taking 2, 6-diaminopyridine as a chain extender and taking a carboxyl-containing imidazolyl hydrophobic copolymer as an end-capping reagent.

The invention discloses a phosphogypsum efficient curing agent and a phosphogypsum harmless treatment method. The curing agent is composed of an exciting agent, a modifying agent and an adsorbent. The exciting agent comprises one or a combination of more of calcium oxide and calcium hydroxide; the modifier comprises one or a combination of more of magnesium oxide, manganese oxide, aluminum oxide, ferric oxide, lanthanum oxide, magnesium chloride, manganese chloride, aluminum chloride, ferric chloride, lanthanum chloride and the like; the adsorbent comprises one or a combination of more of calcium silicate, aluminum silicate, kaolinite, potassium feldspar, calcium metasilicate and the like. The curing agent provided by the invention can efficiently cure soluble phosphorus, fluorine and heavy metal ions in ardealite whether the curing agent and ardealite are mixed and stirred for reaction or a dump leaching process is adopted for treatment, and the curing rates of the soluble phosphorus, fluorine and heavy metal ions in the ardealite reach 99%, 95% and 99%.

A method for evaluating contribution of each component to shale oil reservoir resistivity at high temperature and high pressure is applied to the field of oil exploration and development. The method comprises the following steps: (1) analyzing the volume percentage of each clay mineral, the pore water content and the mineralization degree of the shale oil reservoir pressure-maintaining closed core; (2) when the fluid pressure is greater than 23MPa, measuring the resistivity of the pressure-maintaining closed rock core at each temperature point; (3) carrying out water balance treatment on pure clay minerals, namely kaolinite, montmorillonite, illite and chlorite, and measuring the resistivity at each temperature point when the fluid pressure is greater than 23MPa; (4) when the fluid pressure is greater than 23MPa, measuring the resistivity of each temperature point of the solution consistent with the mineralization degree of the pore water; and (5) constructing a resistivity evaluation model, and evaluating the contribution of each component to the resistivity of the shale oil reservoir under the condition of high temperature pressure.

The invention discloses a sandstone slice image component identification method based on a GL-SLIC algorithm and semi-supervised learning. The method comprises the following steps: firstly, acquiring a sandstone slice image amplified by 200 times under single polarization, converting an RGB image into a CIE-Lab color space, and extracting a GLBP texture feature vector; then a GL-SLIC superpixel segmentation algorithm is constructed, and adaptive segmentation based on texture and color features is realized in combination with a Gabor filter and a local binary pattern; then implementing a region merging algorithm to generate complete mineral particles and pore fragments; finally, a classifier based on VGG16 and a discriminator based on ResNet18 are constructed, a semi-supervised self-training framework is adopted, a model is initialized by using about 6% of manual labeling samples, a high-confidence-coefficient pseudo-label extension training data set is generated through iteration, and automatic recognition of sandstone components such as quartz, pores, kaolinite, rock debris and a matrix is achieved. According to the method, the recognition accuracy of 96.3% on a test set is achieved, compared with a traditional method, the segmentation precision and the recognition accuracy are remarkably improved, the data labeling cost is greatly reduced, and an efficient technical scheme is provided for automatic analysis of geological images.

The invention discloses a method for synthesizing sodalite from kaolinite and solidifying radioactive waste salt in situ and application of the method, the method comprises the following steps: mixing kaolinite, inorganic alkali, molten salt and chlorine-containing radioactive waste salt, and then carrying out heat treatment, at least one of the inorganic alkali and the molten salt containing Na element; a mixture of kaolinite, inorganic alkali, molten salt and chlorine-containing radioactive waste salt is converted and synthesized into sodalite, and in-situ capture of splitting elements and chlorine elements is achieved. According to the method, the natural clay mineral kaolinite which is rich in natural reserves, stable in chemical property and rich in silicon and aluminum sources is used as a raw material, sodalite is synthesized in a molten salt system, radioactive waste salt is solidified synchronously, and the high-temperature molten salt electrolytic refining and electrolytic reduction processes can be better linked in the process. According to the method, efficient capturing and fixing of various splitting elements and chlorine elements in the radioactive waste salt can be achieved, the stability and safety of a solidified body are improved, the treatment cost and energy consumption are reduced, and the treatment process is simplified.

The invention discloses a rock slice image component identification method based on deep learning. According to the method, a data set is constructed through PCA dimension reduction and normalization, segmentation parameters are generated by utilizing ResNet50 and a self-attention mechanism, automatic classification of quartz, rock debris, kaolinite, pores and matrixes is realized by combining a VGG16 model, two-stage segmentation is performed by adopting AGLFIF and Otsu algorithms, and high-precision identification and geological analysis automation of rock slice images are realized. According to the method, real-time component identification of the rock slice image can be realized, and automation and reliability of geological analysis are improved.

The application provides a rock wool material, a rock wool product and a preparation method thereof, and relates to the technical field of building material preparation.The raw material of the rock wool material comprises, in terms of weight parts, 15-25 parts of red mud, 5-10 parts of fly ash residue A extracted for alumina, 10-26 parts of fly ash residue B extracted for alumina, 20-46 parts of kaolinite, 18-28 parts of carbide slag and 5-15 parts of wollastonite; the preparation raw material of the rock wool product comprises the rock wool material, a phenolic resin binder and an adsorbent component.The application efficiently utilizes solid waste, greatly reduces the production cost of the rock wool, the rock wool product prepared has good heat preservation performance and fire resistance, simultaneously reduces environmental pollution, greatly guarantees the health of production workers and further guarantees a good living environment.

This utility model relates to the field of solid-liquid separation technology, specifically an integrated solid-liquid separation device for kaolinite suspension, comprising a vertical flow sedimentation tank, a central feed pipe, a flow guiding component, and a drive component. The vertical flow sedimentation tank has a drain outlet at the bottom and an overflow weir at the top. A water collection tank is located outside the overflow weir, and water outlets are located on both sides of the water collection tank. The central feed pipe is located at the upper center of the vertical flow sedimentation tank and is connected to a water inlet pipe on one side. The flow guiding component includes a mounting base fixed inside the vertical flow sedimentation tank, and a flow guiding plate is fixed to the outer wall of the mounting base. The flow guiding plate is set at an inclined angle and has serrated protrusions on its surface. Multiple sets of ultrasonic oscillators are evenly spaced on the inner wall of the vertical flow sedimentation tank, which can realize the flow guiding control of the suspension, facilitate the extension of the material's residence time in the tank, increase the probability of particle sedimentation, and at the same time, promote particle collision and accelerate the agglomeration of kaolinite particles.

The invention discloses a method for in-situ testing of dynamic change of floccules along with a sedimentation process based on four-dimensional CT (Computed Tomography), and relates to the technical field of chemical monitoring. The method comprises the following steps: preparing a floccule sample for flocculent settling of kaolinite in a cationic solution environment; cT scanning parameters are set, and an image sequence of the floccule sample in the sedimentation process is obtained; preprocessing the image sequence and performing gray correction to obtain a corrected image; and calculating density values of the floccules at different sedimentation heights based on the corrected image to obtain a density dynamic change result. According to the invention, the in-situ real-time dynamic observation of the floc density in the sedimentation process can be realized, and the defects that the traditional floc sampling mode is easy to damage the floc structure and also interrupts the static analysis means of the sedimentation process are overcome.

This invention relates to the field of packaging film technology and provides a low-temperature polyolefin packaging film and its preparation method. The packaging film comprises a three-layer co-extruded structure consisting of an outer layer, a middle layer, and an inner layer. The components of each layer are as follows: Inner layer: metallocene polyolefin, high-performance polypropylene, modified lignin nanofibers, and erucamide / silica composite microspheres; Middle layer: PCR, modified nano-kaolinite, and trimethylolpropane triacrylate; Outer layer: PCR, modified tourmaline nanotubes, benzoyl peroxide microcapsules, and polydopamine-coated chitosan. This invention uses PCR, which is more energy-efficient and environmentally friendly. The addition of modified lignin nanofibers to the inner layer improves tensile strength; the addition of modified nano-kaolinite to the middle layer improves thermal shrinkage; the addition of modified tourmaline nanotubes to the outer layer lowers the crosslinking reaction initiation temperature and improves shrinkage; and the addition of polydopamine-coated chitosan allows for reversible recombination upon damage, improving puncture strength.

USE OF A MARL FOR THE PREPARATION OF A POZZOLANIC MATERIAL The present invention relates to the use of a marl comprising: more than 45% calcite; and at least 1% kaolinite; for the preparation of a pozzolanic material.

The embodiment of the invention relates to the field of testing or analyzing materials by means of measuring chemical or physical properties of materials, in particular to a method for determining a uranium metallogenic area of a to-be-surveyed area, which comprises the following steps: acquiring soil radon gas data of the to-be-surveyed area; according to the soil radon gas data, determining a first uranium metallogenic favorable area of the to-be-surveyed area; according to the first uranium metallogenic favorable area, the positions of a plurality of drill holes are determined; acquiring a plurality of sandstone samples of the plurality of drill holes at a plurality of heights; determining the contents of montmorillonite and kaolinite in the plurality of sandstone samples; determining a second uranium metallogenic favorable area of the to-be-surveyed area according to the montmorillonite and kaolinite contents in the plurality of sandstone samples and the first uranium metallogenic favorable area; and determining the uranium metallogenic area of the area to be surveyed according to the contents of montmorillonite and kaolinite in the plurality of sandstone samples and the second uranium metallogenic favorable area. According to the method provided by the embodiment of the invention, the efficiency and accuracy of determining the uranium metallogenic area of the area to be surveyed can be improved.

The invention relates to a method for selectively extracting lithium from clay lithium ore, in particular to the field of lithium extraction.The method comprises the steps that clay lithium ore powder is roasted and activated to obtain roasted ore powder; and mixing the obtained roasted mineral powder with a calcium leaching aid, carrying out water leaching, and carrying out solid-liquid separation to obtain a lithium extracting solution and filter residues. According to the method provided by the invention, the clay type lithium ore is firstly subjected to roasting activation treatment, and ore phase activation conversion of the clay type lithium ore is realized in the high-temperature roasting process, so that the lithium-containing minerals such as kaolinite, lithium chlorite and montmorillonite are subjected to hydroxyl removal and are converted into structures with high leaching activity; the clay lithium ore subjected to high-temperature roasting is subjected to water leaching by adopting a calcium leaching aid, the structure of aluminosilicate minerals is destroyed in a weakly alkaline environment, so that lithium in crystals is released, and meanwhile, impurity elements such as aluminum, silicon, magnesium and iron are fixed in a slag phase, so that efficient selective leaching of lithium is realized.

The invention relates to the technical field of sludge calcination, in particular to a method for regulating and controlling a phosphorus phase in a sludge calcination product by utilizing kaolinite. The invention discloses a method for regulating and controlling a phosphorus phase in a sludge calcined product by utilizing kaolinite. The method comprises the following steps: calcining a mixture of kaolinite and sludge in a certain proportion at 600-700 DEG C for 2-4 hours; in the mixture, the mass ratio of kaolinite is 8-10%. The kaolinite is added to be pyrolyzed and calcined with the sludge, under the synergistic effect of proportion, temperature and the like, phosphorus phase reconstruction in the calcined sludge product is regulated and controlled, the total phosphorus (TP) preservation amount is increased, and phosphorus in the sludge is converted into a form which has higher recovery value, higher bioavailability and is easier to extract subsequently, especially apatite-state phosphorus (AP); the phosphate fertilizer is stable in chemical property and moderate in solubility, and is a source of high-quality phosphate fertilizer or phosphorus chemical raw materials.

The invention discloses a method for nondestructively distinguishing kaolinite minerals based on an infrared reflection method, and belongs to the technical field of gemstone detection. According to the method, the classification standard of the kaolinite minerals is formulated according to the wave number difference between a Si-O characteristic peak near 1130 cm <-1 > and a Si-O-Si characteristic peak near 1005 cm <-1 > in an infrared reflection spectrum; the method comprises the following steps: determining an infrared reflection spectrum of a kaolinite family mineral to be classified through a Fourier transform infrared spectrometer, and distinguishing kaolinite, dickite and pearl pottery stone in the kaolinite family mineral according to a wave number difference between a Si-O characteristic peak near 1130 cm <-1 > and a Si-O-Si characteristic peak near 1005 cm <-1 >. The kaolinite group minerals are distinguished according to the wave number difference between the Si-O characteristic peak near 1130 cm <-1 > and the Si-O-Si characteristic peak near 1005 cm <-1 > in the infrared reflection spectrum, and the problems that in an existing gemstone detection method, the kaolinite group minerals cannot be distinguished through nondestructive detection, and the detection accuracy is high can be solved. And the kaolinite group minerals can be distinguished only through infrared transmission spectrum or X-ray diffraction analysis and other detection methods for damaged samples.

The invention discloses a solar molten salt furnace refractory brick capable of resisting thermal shock and a preparation method of the solar molten salt furnace refractory brick capable of resisting thermal shock and the preparation method of the solar molten salt furnace refractory brick. 3 to 5 percent of alpha-Al2O3 micro powder; 8 to 12% of kaolinite; 7-9% of high alumina bauxite; 4-6% of modified fluorite tailing ceramsite; 1-3% of a binding agent; 2.5-3% of refractory mortar; 5-10% of a regenerated bamboo fiber skeleton; mullite: the balance; the combined action of the modified fluorite tailing ceramsite and the regenerated bamboo fiber skeleton effectively improves the cold and heat shock resistance and high temperature molten salt erosion resistance of the brick body, and optimizes the performance of the brick body.

The invention discloses a preparation method of a light regeneration iron-based ceramic membrane and application of the light regeneration iron-based ceramic membrane in removal of perfluorinated compounds, and the preparation method of the FCM comprises the following steps: fully grinding kaolinite and an iron-loaded zeolite molecular sieve (Fe-zeolite) by using a mortar, then adding a polyvinyl alcohol solution as a binder, and continuously grinding; pressing and molding the dried powder of the mixture by using a hydraulic machine, and sintering in a muffle furnace to obtain the iron-based ceramic membrane. The obtained iron-based ceramic membrane can efficiently filter and remove low-concentration perfluorinated compounds in a water body, the iron-based ceramic membrane enriched with the perfluorinated compounds can efficiently degrade, defluorinate and regenerate the perfluorinated compounds through ultraviolet irradiation under a non-aqueous phase condition, and the iron-based ceramic membrane has a good application prospect.

Provided is, inter alia, an insulating sheet comprising two outer layers disposed so as to face each other, and a base material layer disposed between the two outer layers, wherein at least one of the two outer layers contains at least one selected from the group consisting of mica, bentonite, and kaolinite.

The embodiment of the invention relates to the field of testing or analyzing materials by means of measuring chemical or physical properties of the materials, in particular to a method for determining the producing area of sandstone, which comprises the following steps: acquiring a sandstone sample to be determined and a control sample with a known producing area, determining illite, montmorillonite, chlorite, kaolinite, chlorite / montmorillonite mixed layer and illite / montmorillonite mixed layer content of the sandstone sample and the control sample; determining chemical weathering indexes of the sandstone sample and the control sample; determining the ratio of the content of SiO2 to the content of Al2O3 in the sandstone sample and the control sample; determining a classification function related to the producing area; and determining the production place of the sandstone sample according to the classification function, the chemical weathering indexes of the control sample and the sandstone sample, the ratio of the content of SiO2 to the content of Al2O3, and the content of illite, montmorillonite, chlorite, kaolinite, a chlorite / montmorillonite mixed layer and an illite / montmorillonite mixed layer. The method provided by the embodiment of the invention can effectively and accurately determine the producing area of the sandstone sample of which the producing area is to be determined.

The application discloses a kind of composite adsorbent based on modified kaolinite and its preparation method and application, belong to resource utilization coal-based kaolinite technical field;It is after mixing kaolinite, DMSO aqueous solution is heated and stirred, then join MeOH is hydrothermally reacted, then join CTAC / MeOH solution is hydrothermally reacted and prepared tubular CK-CTAC, then chitosan is added and N, N-methylene bisacrylamide is reacted together under nitrogen environment, and composite adsorbent is obtained;The microstructure of kaolinite modification of the application is tubular, relative area and the number of functional groups are improved, after grafting chitosan, compared with traditional kaolinite and chitosan, the adsorption capacity of composite adsorbent to Pb (II) in water has been significantly improved.

The invention discloses a sulfate corrosion resistant method for concrete, and relates to the technical field of civil engineering materials and durability, and the method comprises the following steps: preparing matrix concrete: adopting modified Portland cement with tricalcium aluminate content of 6-8% as a cementing material, and doping a composite mineral admixture accounting for 20-28% of the total mass of the cementing material, the composite mineral admixture is composed of nano metakaolin and superfine slag according to the mass ratio of 1: (1.2-1.5); hydrophobic nano silicon dioxide aerogel particles with the particle size of 50-200 nm and the doping amount of 1.5-2.5 kg / m < 3 > are implanted into the depth interval of 0-15 mm of the concrete surface layer, meanwhile, a shape memory alloy micro wire mesh is embedded and is made of nickel-titanium alloy, the wire diameter is 0.1 mm, and the mesh density is 4 * 4 / cm < 2 >; and in-situ reaction coating generation: alkali-activated geopolymer slurry is sprayed after pouring forming, the modulus of water glass is 1.6-1.8, the solid content is larger than or equal to 65%, and an inorganic-organic hybrid protective layer matched with the thermal expansion coefficient of a concrete matrix is formed through curing.

The application belongs to the technical field of antibacterial materials, and particularly relates to a kaolinite / cerium oxide slow-release antibacterial composite material and a preparation method and application thereof. The application can effectively prevent the agglomeration of cerium oxide nanoparticles, reduce the size of the synthesized cerium oxide on the surface of the kaolinite, and simultaneously, through the interface effect of the hydroxyl groups on the surface of the kaolinite, not only can the crystal structure of the cerium oxide nanoparticles be regulated to improve the overall antibacterial performance, but also the rare earth oxide can be anchored on the surface and the interlayer of the kaolinite through the interface effect and the chelating agent to achieve the slow-release purpose. The antibacterial effective period of the composite material provided by the application can reach more than 30 days, and the composite material can be widely applied in the antibacterial field.

An additive composition comprising activated kaolinite and up to about 5 wt% halloysite based on the weight of kaolinite and halloysite is disclosed. Also disclosed is a method of regulating a rheological property of a cementitious composition.

The present application relates to the technical field of tailings treatment, and particularly relates to a cementing agent for clay tailings cemented filling and a use method thereof, which comprises, in terms of weight fractions, 20-35 parts of fast-hardening sulphoaluminate cement, 8-15 parts of silica fume, 30-60 parts of activated slag powder, 10-20 parts of limestone powder, 5-15 parts of desulfurization gypsum, 6-10 parts of nano SiO2 / Al2O3 composite sol and 30-40 parts of magnesium phosphate-red mud activated microspheres; ions released by the magnesium phosphate-red mud activated microspheres destroy the interlayer hydrogen bonds of kaolinite, reduce the adsorption of free water by clay, cooperate with the fast-hardening sulphoaluminate cement to rapidly form a skeleton, solve the problem of insufficient hydration caused by the imbalance of the water-binder ratio of the cementing material, and meanwhile, the nano SiO2 / Al2O3 composite sol penetrates the clay gap by virtue of the nanoscale size and positive charge characteristics, and in combination with the silica fume and the slag powder, generates a gel in situ on the surface of the clay and constructs a cross-scale bonding network, so that the cementing material and the tailings particles are effectively bonded, the high-clay tailings are efficiently cemented, and the performance of the filling body is improved.