25 results about "Kaolinite" patented technology

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.

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.

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.

This invention discloses the application of a combined collector in reverse flotation separation of lithium chlorite, belonging to the field of mineral flotation separation technology. The combined collector comprises dodecylamine, acetic acid, and sodium oleate. The mass ratio of dodecylamine, acetic acid, and sodium oleate in the combined collector is 1:0.1-0.2:9-11. This invention uses a combined collector composed of NaOL, DDA, and acetic acid as a collector for reverse flotation separation of lithium chlorite, which can effectively separate lithium chlorite from boehmite and kaolinite in clay-type lithium ores, thereby achieving pre-enrichment of clay-type lithium ores and reducing the amount of material processed in subsequent roasting for lithium extraction. The combined collector used in this invention has advantages such as wide availability of raw materials, low cost, simple preparation, convenient use, strong collecting ability, and good foaming performance.

The present application relates to the field of molecular sieve preparation, discloses a kind of molecular sieve matrix pellet strength improver and its preparation method and application and the preparation method of molecular sieve matrix pellet, the preparation method of molecular sieve matrix pellet strength improver includes: 1) clay mineral aggregate is mixed with sodium source, and clay base material is obtained;2) after being pulverized treatment, clay base material is calcined with hole expansion aid;Wherein, the clay mineral aggregate is the mixture of halloysite, kaolinite and montmorillonite, the water content of the clay mineral aggregate is 20-40wt%, the Fe2O3 content in the clay mineral aggregate is 0.01-0.1wt%, in the mixture of the clay mineral aggregate and the hole expansion aid, the particle size of 300-600 mesh accounts for more than 98%, and the sodium source is Na2O.The strength improver prepared by the method has high viscosity and hygroscopicity, and good plasticity.

This invention discloses a nano-haloysite-based electrolyte filling material and its preparation and application methods. The preparation method includes: mixing and grinding nano-haloysite with graphite; mixing the resulting halloysite-graphite mixture with saturated saline solution and polyacrylamide at low and high speeds, adjusting the pH of the resulting mixture to 6.5–7.5, and then subjecting it to ultrasonic treatment to obtain the electrolyte filling material. The electrolyte filling material obtained by this invention is a stable dispersion system. Compared with kaolinite fillers, its stability is significantly improved, and it does not exhibit stratification over a longer application period. The resulting electrode has a more stable potential difference.

The application discloses grass-wood-ash black glaze and a preparation method thereof, and relates to the technical field of glaze preparation. The grass-wood-ash black glaze is prepared from the following raw materials in parts by weight: 50-60 parts of silicon dioxide, 9-12 parts of aluminum oxide, 7-10 parts of calcium oxide, 1-3 parts of magnesium oxide, 4-6 parts of diiron trioxide, 2-6 parts of potassium oxide, 3-8 parts of fluorcarbonate, 5-10 parts of lithium mica, 12-15 parts of quartz stone, 2-4 parts of potassium feldspar, 5-8 parts of plagioclase, 7-10 parts of calcite, 30-35 parts of dolomite, 20-25 parts of illite, 6-9 parts of illite-smectite mixed layer, 5-8 parts of chlorite, 3-5 parts of kaolinite and 10-20 parts of grass-wood-ash. The glaze surface of the grass-wood-ash black glaze has a unique artistic effect of blue-violet kiln-change flow lines on a dark green base, has the advantages of high color saturation, low sintering temperature, unique artistic effect and the like, and has good environmental protection and antibacterial properties.

This invention discloses a composite filter material, apparatus, and method for removing metal ions from white oil, relating to the field of white oil purification technology. The composite filter material comprises a kaolinite layer, a montmorillonite layer, a porous resin layer, and a filter cotton layer. The kaolinite particle size in the kaolinite layer is ≤1mm; the montmorillonite particle size in the montmorillonite layer is ≤50nm; the porous resin particle size in the porous resin layer is ≤1mm; and the filter cotton in the filter cotton layer has a mesh size ≥600 mesh and a thickness ≥2mm. By employing a composite filter material formed from the kaolinite, montmorillonite, porous resin, and filter cotton layers, and controlling the particle size, mesh size, and / or thickness parameters of each layer, metal ions and impurities in white oil can be effectively filtered, resulting in white oil free of metal ions after recovery. This prevents discoloration of ceramic green bodies after sintering, ensuring the quality of ceramic products.

This invention provides a method for purifying sandy kaolin ore, the resulting kaolinite concentrate, and its applications. The method includes the following steps: providing a kaolin slurry; adding a flotation agent to the kaolin slurry for conditioning to obtain a dispersed slurry; performing positive flotation on the dispersed slurry under acidic conditions to obtain a rough kaolinite concentrate; subjecting the rough kaolinite concentrate to acid leaching, followed by solid-liquid separation to obtain a final kaolinite concentrate. This invention achieves efficient recovery of fine-grained kaolinite from sandy kaolin ore, significantly improving separation efficiency compared to traditional physical separation methods. The resulting kaolinite concentrate exhibits significantly reduced iron and titanium impurity content, and its whiteness meets the technical requirements for high-grade ceramic raw materials or fillers, thus broadening the product's application value.

This invention provides an iron removal device for kaolinite-type coal gangue. The device includes a placement box, a guide cylinder fixedly installed at the bottom of the placement box, a connecting box fixedly installed at the bottom of the guide cylinder, and support legs fixedly installed at both ends of the placement box. The support legs and the connecting box are fixedly connected by fixing blocks. A crushing component is arranged on the upper inner side of the placement box, and a screening mechanism is arranged on the upper inner side of the connecting box. The screening mechanism and the crushing component are interconnected by a belt. The screening mechanism includes a rotating shaft. Placement blocks are fixedly installed in the middle of the upper part of the inner wall of the connecting box. The rotating shaft is rotatably positioned between two placement blocks. A rotating wheel is fixedly installed at one end of the rotating shaft, and several magnetic meshes are fixedly installed on the outer side of the rotating shaft. The iron removal device for kaolinite-type coal gangue provided by this invention has the advantages of convenient use, good environmental protection, and high iron removal efficiency.

This invention discloses a flotation separation method for Fe / Ti impurities in coal-series kaolinite based on the impurity occurrence state, comprising the following steps: performing process mineralogical analysis on the raw coal-series kaolinite ore, and constructing single-mineral systems accordingly, including a kaolinite mineral system, an iron-bearing mineral system, and a titanium-bearing mineral system; conducting flotation tests and surface property tests on each constructed single mineral under different collector system conditions to obtain the differences in floatability and interfacial properties of each single mineral under different reagent conditions; and determining and implementing the raw ore flotation scheme. This invention, by constructing single-mineral flotation systems of kaolinite, siderite, and rutile, can establish the correspondence between different minerals and different collectors, providing a basis for determining the raw ore flotation scheme and flotation conditions, and improving the targeting of flotation separation.

The application relates to the field of investment casting technology, in particular to a silica sol shell and a preparation method thereof. The preparation method comprises the following steps: dipping a mold group into a surface layer coating to perform surface layer coating, and then sprinkling surface layer sand after coating; the surface layer coating comprises surface layer powder, zircon sand and surface layer silica sol; the surface layer powder comprises zirconium powder and fused quartz powder with a mass ratio of 1:0.42-2.34; the mass ratio of the zirconium powder and the zircon sand is 1:0.1-0.2; and the mass ratio of the surface layer powder and the surface layer silica sol is 2.78-3.5:1; dipping the surface layer of the shell into a back layer coating to perform back layer coating, and then sprinkling back layer sand on the surface of the back layer coating after coating; the back layer coating comprises back layer powder and back layer silica sol; the back layer powder comprises kaolin powder and quartz powder with a mass ratio of 1:1.5-1.7; and the mass ratio of the back layer powder and the back layer silica sol is 1:0.9-1.1; and the cost is remarkably reduced when the silica sol shell is prepared by the method.

This invention presents a novel method of Nano Clay production directly from minerals for the application as 8 modifier [በ self-healing asphalt formulations. Which will address the critical issue of road surface deterioration due to cracking and environmental stresses? By incorporating specific types of Nano Clay, such as montmorillonite or kaolinite, into the asphalt binder, the resulting composite material exhibits enhanced mechanical properties and self-healing capabilities. The Nano Clay particles facilitate the healing process by improving the thermal and moisture sensitivity of the asphalt, enabling it to autonomously repair microcracks by moving swiftly the area needed. This innovative approach not only prolongs the lifespan of road surfaces but also reduces maintenance costs and enhances overall performance. The use of Nano clay in selfhealing asphalt represents a sustainable advancement in civil engineering, contributing to more resilient infrastructure and promoting environmentally friendly construction practices.

The application discloses a high-density high-purity polycrystalline kaolinite preparation method under hot isostatic pressing conditions. –3 The steel ladle is placed in a graphite furnace cylinder body of a hot isostatic pressing high-pressure container, and a graphite sealing cover is covered on the steel ladle; argon is used as a pressure transmission medium, a multi-gradient cylinder body temperature and pressure increasing mode is adopted, the pressure in the cylinder sample bin is increased to 105.8 MPa, the temperature is increased to 800 DEG C, and the temperature and pressure are kept for 4.8 hours; a multi-gradient cylinder body temperature and pressure decreasing mode is adopted, the temperature in the cylinder sample bin is decreased to 177 DEG C, and the pressure is decreased to 71.8 MPa; finally, the pressure is released, the temperature is decreased to room temperature, and the polycrystalline kaolinite aggregate is obtained; and the technical blank of preparing a high-density polycrystalline kaolinite aggregate bulk body rich in aluminosilicate mineral experimental samples under high-temperature and high-pressure conditions is solved.

The application discloses a coal seam lithium-rich layer detection method based on well logging curves and statistical analysis, and belongs to the technical field of mineral resource exploration. The method comprises the following steps: selecting a series of representative coal seam positions for systematic sampling, and preparing the samples into piston samples and powder samples; determining the kaolinite and lithium content of the powder samples, and distinguishing lithium-rich and ordinary coal samples; systematically determining various geophysical response parameters of the piston samples, such as density, resistivity and wave velocity, and screening out sensitive discrimination indexes for lithium enrichment; setting a window size, calculating the moving statistical value curves of the density, resistivity, wave velocity and other well logging curves sensitive to the lithium-rich layer, calculating principal components, and using the selected principal components and a support micro machine to train a prediction model, so as to predict the lithium-rich layer in the coal seam. The application combines geophysical logging, statistical analysis, principal component analysis and a support vector machine, and provides a fast, economical and non-destructive means for lithium resource exploration in coal.

This invention relates to the field of sludge treatment technology, and more particularly to a method for preparing struvite by acid leaching of phosphorus from sludge gasification residue with kaolinite assistance. The method includes the following steps: S1, calcining a mixture of kaolinite and sludge in a certain proportion at 800-1000℃ for a period of time; S2, dissolving the calcined product with an acid solution, separating the solid and liquid, and collecting the phosphorus-containing supernatant; S3, adding a certain amount of magnesium and ammonium sources to the phosphorus-containing supernatant, adjusting the pH to 9.4-10, stirring for a period of time, separating the solid and liquid, washing the filtered solid with deionized water, and drying to obtain struvite crystals. This invention introduces kaolinite before sludge calcination, increasing the phosphorus content in the calcined product, improving the utilization rate of sludge gasification residue, and solidifying heavy metals in the sludge. It avoids a large amount of heavy metals entering the phosphorus-containing supernatant during acid leaching, resulting in a stable and reliable MAP struvite material.

The present application relates to a kind of coal gangue glazed tile and its preparation method, the coal gangue glazed tile includes brick and glaze, the brick according to percentage by weight, including coal gangue 55-60%, red mud 25-30%, kaolinite 10-15%, talcum powder 1-3%, sintering aid 0.1-0.3%;The glaze according to percentage by weight, including 18-20% calcined coal gangue, 25-30% quartz, 20-25% zirconium quartz, 8-10% calcite, 13-15% boric acid, 4-6% borax.The coal gangue glazed tile prepared in the present application uses a large amount of coal gangue as raw material, can effectively utilize the large amount of coal gangue produced in coal production, reduces the pollution of coal gangue to environment;The coal gangue glazed tile produced has excellent breaking strength, glaze crack resistance, pollution resistance and wear resistance;Meanwhile, red mud and talcum powder are used as sulfur-fixing agent, the combustible sulfur in coal gangue can be solidified, effectively reduce the emission of sulfur-containing waste gas, reduce production cost and pollution.

The present application relates to the technical field of coal-based kaolinite flotation purification, and particularly relates to a flotation reagent system for selective inhibition of lattice type iron and titanium impurities in coal-based kaolinite and a flotation separation method thereof. The flotation reagent system comprises a metal salt activator, an amine oxime small molecule inhibitor and a cationic collector. In view of the problems that lattice type iron and titanium impurities are difficult to be effectively removed in the existing coal-based kaolinite purification process, the conventional flotation reagent has poor selectivity, and the flotation separation efficiency is low, the present application enhances the selective adsorption and complexation of the reagent on the iron and titanium active centers through the synergistic effect between the metal salt activator and the amine oxime small molecule inhibitor, thereby improving the difference in surface properties and the difference in flotation behavior between the lattice type iron and titanium impurities and the kaolinite, achieving effective selective inhibition of the lattice type iron and titanium impurities, and promoting the selective separation and purification of the kaolinite mineral in the flotation process, and improving the purity of the coal-based kaolinite concentrate and the flotation efficiency.

The application belongs to the technical field of plastic preparation, and particularly relates to a polypropylene composite material and a preparation method thereof. The polypropylene composite material provided by the application comprises the following raw materials in mass fractions: 65-75 parts of polypropylene, 18-22 parts of filler master batch, 2-4 parts of compatilizer and 0.2-0.3 parts of antioxidant; the filler master batch comprises functional additives and acrylate elastomers wrapping the functional additives; the functional additives comprise modified silicon micro powder, modified kaolinite, talcum powder and cordierite; the modified silicon micro powder comprises silicon micro powder coated with a silane coupling agent; and the modified kaolinite comprises kaolinite coated with a silane coupling agent. The polypropylene composite material provided by the application simultaneously has the advantages of high flexural modulus, high impact strength and high heat distortion temperature.

The application discloses modified kaolinite, a preparation method thereof and application of the modified kaolinite in fluoride removal. The modified kaolinite is obtained by mixing and calcining kaolinite after carboxyl treatment. The modified kaolinite can be added into a strong-acid fluorine-containing sulfate solution for adsorption, and the modified kaolinite can preferentially act on fluoride in the solution and weakly act on sulfate ions, so that selective removal of the fluoride is realized. The modified kaolinite is suitable for removal of the fluoride in a strong-acid sulfate system such as electrolytic zinc, and has the characteristics of simple process and strong adaptability.

This invention relates to the field of mineral flotation separation technology, specifically to a method for desilication of high-silica bauxite by reverse flotation. The invention uses high-silica bauxite as the target material. The raw ore is crushed, ground, and slurry-adjusted to obtain a pulp to be processed. The pH of the pulp is adjusted to 5.0-9.0 using sodium hydroxide or hydrochloric acid. The reagents used in reverse flotation include a boehmite inhibitor, an activator, and an anionic collector. The inhibitor is selected from one or more mixtures of water glass, tannic acid, sodium pyrophosphate, and polyacrylamide. The activator is selected from one of copper sulfate, lead acetate, and aluminum chloride. The anionic collector is selected from one of sodium dodecyl sulfate, sodium dodecylbenzene sulfonate, and sodium dodecyl sulfonate. This invention improves the selectivity of separating boehmite and kaolinite, resulting in good flotation separation, a high aluminum-silicon ratio in the bauxite concentrate, and a high alumina recovery rate. It also significantly improves the problems of large foam volume, strong viscosity, and difficulty in defoaming during the flotation process.

This invention relates to a rapid, pretreatment-free detection method for breathable free silica on membranes based on FTIR transmission spectroscopy, belonging to the field of dust monitoring. This method establishes the RCS quality within a 5.78 mm spot diameter and the relationship between the RCS and the 800 cm⁻¹ area. ‑ ¹Standard algorithm for characteristic absorption peaks; targeting kaolinite, the most abundant interfering mineral in coal mine dust, utilizing its 915 cm⁻¹ peak... ‑ ¹The absorption peak was established at 800 cm⁻¹ ‑ ¹ An algorithm for subtracting interference. To address the non-uniform distribution of respirable dust deposited on the filter membrane surface, a piecewise function non-uniform distribution model was constructed. Based on this, a rapid algorithm was proposed that can calculate the total RCS mass of the entire filter membrane using only 10 key measurement points. The entire detection process of this invention eliminates the need for pretreatment steps such as strong acid digestion and high-temperature ashing, shortening the single detection cycle to less than 10 minutes, providing a practical and feasible technical approach for rapid on-site RCS detection in the workplace.

The application discloses a coal gangue-based ceramic glaze and a preparation method and application thereof, and relates to the field of ceramic materials, which is prepared from the following raw materials in mass percentage: calcined coal gangue 40-50%, silicon dioxide 15-25%, and calcium carbonate 30-40%; the calcined coal gangue is a coal-series kaolinite mineral with a loss on ignition less than 5% after being calcined at 1200-1250 DEG C; the ceramic glaze is prepared by using the coal gangue as a core raw material in a high proportion after being calcined at a specific high temperature, and scientifically matching the silicon dioxide and the calcium carbonate, and successfully prepares the coal gangue-based soft light glaze with stable performance and soft luster; the coal gangue is used as a main raw material to replace kaolin with a higher price in traditional glazes, so that the raw material cost is greatly reduced, and the solid waste is used as a high value-added resource.