157 results about "Bentonitic clay" patented technology

This invention relates to the field of concrete technology, specifically to a self-healing concrete material, its preparation method, and its application. The self-healing concrete material is a core-shell structured microcapsule, comprising a core material and a wall material. The wall material wraps around the core material. The core material comprises the following raw materials in parts by weight: 4-6 parts β-cyclodextrin, 12-18 parts sepiolite powder, 5-10 parts shellac powder, 25-35 parts sulfoaluminate cement, 10-15 parts magnesium oxide, 12-16 parts sodium silicate aqueous solution, and 14-17 parts calcium carbonate. The wall material comprises the following raw materials in parts by weight: 20-30 parts polyvinyl alcohol, 20-30 parts ethyl cellulose, 15-25 parts bentonite, and 25-35 parts corn starch. The mass ratio of the core material to the wall material is 6-7:3-4. The core material of the self-healing concrete material provided by this invention, comprising β-cyclodextrin, sepiolite powder, and shellac powder, can improve the problems of slow repair speed and poor reinforcement effect of self-healing materials.

This application discloses a water-based sand texture paint and its preparation method, belonging to the field of water-based paint technology. The water-based sand texture paint of this application, based on 100% of the total mass of the water-based sand texture paint, includes: 1-1.5% mixed corrosion inhibitor, 1.5-3.5% film-forming aid, 10-15% water-soluble acrylic resin, 15-20% hydroxyl acrylic dispersion, 10-15% polyurethane dispersion, 10-15% precipitated barium sulfate, 10-15% glass micro powder, 0.2-0.5% coupling agent, 0.2-0.3% wetting agent, 0.3-0.5% dispersant, 0.1-0.3% defoamer, 5-10% color paste, 0.2-0.5% bentonite, 0.3-2.5% thickener, 5-7% sand texture powder, 8-10% expanded graphite, 0.5-1.5% activation period extender, and 15-20% water. The water-based sand texture paint prepared using the formula and preparation method of this application has a low odor during the coating process, is non-flammable and non-explosive, and has low toxicity, making it more suitable for widespread use, especially for use in the luggage compartment of passenger cars, with a wide range of applications.

A coal-based solid waste regenerated aggregate shotcrete and a preparation method thereof, comprising cementitious material 100 parts, coarse aggregate 150-200 parts, fine aggregate 150-200 parts, polycarboxylate superplasticizer 2-4 parts, anti-adsorption agent 0.5-1.5 parts, water 35-60 parts, and defoaming agent 0.1-0.3 parts. The cementitious material is composed of cement and waste desulfurization gypsum; the coarse and fine aggregates are all coal gangue or gasification slag; the polycarboxylate superplasticizer is a slow-release polycarboxylate superplasticizer containing phosphate ester groups in the side chain; and the anti-adsorption agent is bentonite modified by a silane coupling agent. The modified bentonite anti-adsorption agent preferentially blocks the porous surface adsorption sites of the coal-based solid waste aggregate, and the slow-release polycarboxylate superplasticizer continuously provides dispersion force, effectively reduces the invalid consumption of the superplasticizer, significantly reduces the 1h slump loss rate of the concrete, reduces the rebound rate of the shotcrete construction to below 15%, and the total solid waste content is above 70%, realizing large-scale collaborative utilization of coal-based solid waste and waste desulfurization gypsum.

This invention discloses a black-based blue-spotted glaze with an earthworm-like pattern and its preparation method. The glaze consists of a body, a black base glaze, and a blue-spotted glaze from the inside out. The raw materials for the black base glaze are: feldspar, calcite, calcium borate, dolomite, talc, barium carbonate, quartz, bentonite, zirconium silicate, rutile, cobalt oxide, manganese oxide, and iron oxide. The raw materials for the blue-spotted glaze are: feldspar, limestone, alumina, talc, barium sulfate, Datong clay, zinc oxide, quartz, and titanium dioxide. The preparation method includes: 1. Wet ball milling the black base glaze raw materials to obtain a black base glaze slurry; 2. Wet ball milling the blue-spotted glaze raw materials to obtain a blue-spotted glaze slurry; 3. Bisque firing the body; 4. Applying the black base glaze slurry to the body and drying it; 5. Applying the blue-spotted glaze slurry to the body and drying it; 6. Oxidation firing and reduction firing of the body, followed by natural cooling to obtain the black-based blue-spotted glaze. The raw material formula of this invention is reasonable and environmentally friendly, which can improve the mechanical properties of the glaze; the preparation method is simple and the yield is high.

This invention discloses a composite pellet binder containing red mud and its application, belonging to the technical field of binders for metallurgical pelleting. The binder uses red mud, a waste residue from the alumina industry, as the main raw material, combined with functional additives. By mass percentage, red mud accounts for 73%~87%, with the remainder being functional additives. This invention, through multi-component synergistic formulation, solves the industry pain points of poor compatibility with strong alkalinity and insufficient self-binding performance of red mud. The prepared binder can directly replace bentonite used in pelleting, exhibiting superior pelletizing performance at the same addition amount. Simultaneously, it can increase the iron content of pellets by 0.248~0.62 percentage points, reduce ironmaking waste emissions, and possess significant environmental and economic benefits. It is compatible with existing pelleting production processes, requires no new equipment, and is easy to industrialize.

This invention belongs to the field of curing agent technology, specifically relating to a composite curing agent, its preparation method, and its application. The composite curing agent comprises the following raw materials in parts by weight: 40-50 parts crushed stone, 20-30 parts cement, 5-10 parts quicklime, 4-10 parts activator, 3-8 parts modified bentonite, and 0.3-0.5 parts crack-resistant agent. The preparation process of the modified bentonite is as follows: (1) Pretreated bentonite is added to an ethanol aqueous solution, then KH570 is added, and the mixture is stirred under heating conditions to obtain pre-modified bentonite; (2) The pre-modified bentonite is added to N,N-dimethylformamide, then diallyl malate and an initiator are added, and the mixture is heated to obtain the modified bentonite. This composite curing agent can significantly improve the mechanical properties and crack resistance of the cured soil.

The application discloses a kind of based on bentonite-based mineral gel subgrade slope double-layer anti-seepage reinforcement method, belong to road engineering anti-seepage reinforcement technical field, including bottom coarse-grained anti-seepage layer, top fine-grained anti-seepage layer, slope anti-seepage layer, after mixing coarse-grained bentonite-based mineral gel particles with bottom coarse-grained soil particles, water curing, paving compaction forms bottom coarse-grained anti-seepage layer, after compaction, continue to fill in the slope anti-seepage layer near the slope of subgrade, layer by layer, finally, after mixing fine-grained bentonite-based mineral gel particles with top fine-grained soil particles, water curing, paving compaction forms top fine-grained anti-seepage layer.The application has the advantages of significant anti-seepage effect, strong freeze-thaw resistance and strong environmental adaptability using the above-mentioned based on bentonite-based mineral gel subgrade slope double-layer anti-seepage reinforcement method, effectively hinders groundwater rise, rain and snow water infiltration and slope seepage reinforcement effect, avoids cracking and collapse of subgrade in permafrost region during operation.

The application discloses a nano-coated slow-release potassium fertilizer, a preparation method and application thereof, and belongs to the field of slow-release fertilizers. The slow-release fertilizer is prepared from potassium sulfate powder as raw material, granulated by mixing a binder, coated by a coating agent, and dried to obtain the nano-coated slow-release potassium fertilizer. The binder is modified kaolin, and the coating agent is selected from one or both of nano-based organic bentonite and modified yellow clay. The prepared controlled-release potassium fertilizer meets the growth requirements of flue-cured tobacco, and has very important practical significance for improving tobacco yield and quality, protecting the ecological environment, and increasing the income of farmers.

The application discloses a cast iron machine demolding agent using hot blast furnace desulfurization by-products and a preparation method thereof, and belongs to the technical field of steel smelting auxiliary materials and solid waste resource utilization. The cast iron machine demolding agent comprises the following raw materials: pretreated desulfurization powder 55-70 parts, quartz powder 6-12 parts, bentonite 8-12 parts, attapulgite 4-8 parts, graphite powder 5-10 parts, silicon powder 3-6 parts and water 100-150 parts; the pretreated desulfurization powder is obtained by drying, crushing and sieving the filter cake discharged from a calcium-based wet desulfurization system of a blast furnace hot blast furnace, and the content of CaSO3*0.5H2O in the dry base component of the pretreated desulfurization powder is 50-70%. The application realizes resource utilization of the desulfurization by-products, and has remarkable economic benefits and environmental benefits.

The utility model discloses a kind of bentonite raw material bin discharging devices, technical scheme is as follows: including bin and the discharge outlet of lower part thereof, the discharge outlet lower part is connected with blanking tube, blanking tube outside is fixed with frame type frame, the two sides of frame type frame are symmetrically inserted with several adjustment insertion rods immediately and extended to blanking tube inside.The utility model is adjusted by setting insertion rod array structure, the shape and size of blanking passage can be accurately controlled, the problem such as uneven distribution of material caused by traditional insertion plate valve, flow rate control inaccuracy is solved, with the advantages of improving material falling uniformity, realizing fine flow rate control, enhancing operation convenience etc.

The utility model relates to the technical field of green planting and discloses a sand land windproof sand fixation green planting equipment based on bentonite, which comprises a planting cylinder and a supporting mechanism arranged on the planting cylinder. The planting cylinder below the fixing ring and the green plants are buried in the soil, then the rotating handle drives the threaded rod to rotate, the adjusting seat is pushed to move along the limiting groove, the supporting plate abuts against the main stem of the green plants, the main stem of the green plants is supported, the problem that the green plants are blown down by the wind is avoided, the supporting plate is adjustable and can be used to support green plants of different thicknesses, when the green plants grow thicker, the first spring arranged between the supporting plate and the adjusting seat allows the supporting plate to shrink, the supporting position of the supporting plate can change with the growth of the green plants, and the problem that the fixed supporting position affects the growth of the green plants is avoided.

The application provides a gas emission reduction functional agent for composting and a preparation method and application thereof, relates to the technical field of organic solid waste resource processing, and comprises pyrolysis treatment of biomass raw materials to form microporous biochar, wherein the pyrolysis treatment adopts limited oxygen pyrolysis conditions, the microporous biochar and the porous inorganic carrier form a multi-stage pore channel skeleton system, and the biomass raw materials include bamboo chips, rice husks and wood chips. The gas emission reduction functional agent for composting and the preparation method thereof are characterized in that the zeolite and bentonite are pretreated to form a porous inorganic carrier, the microporous biochar is combined with the carrier, the functional factor grading release particles are formed by compounding and coating treatment, and finally the composite integration treatment is performed, so that the gas emission reduction functional agent with a multi-stage pore channel skeleton system and a synergistic effect is successfully prepared, the efficiency of gas emission reduction in the composting process is improved, the components are ensured to be released as needed, and the emission reduction effect of the functional agent is enhanced.

This invention belongs to the field of low-carbon technology in metallurgical pelleting, and particularly relates to a precise batching method for producing high-basicity pellets using a chain-loop process. The steps are as follows: Step 1: Concentrate pre-batching: Pre-batching is added during the concentrate batching stage. The content of TFe and SiO2 in the iron concentrate is analyzed, and the concentrate is temporarily stored in batches in storage silos according to the content, forming a component-stable iron concentrate powder. Step 2: Limestone powder batching: The amount of limestone powder to be added is automatically calculated based on the SiO2 content of the concentrate powder after pre-batching, the set basicity of the pellets, and the amount of bentonite added, and then automatically added. Step 3: Roll milling: A roller milling step is added after the iron concentrate powder and limestone powder are mixed. Step 4: Bentonite addition: An appropriate amount of bentonite is set according to the quality of the green pellets. This method forms a component-stable iron concentrate powder by setting precise pre-batching, and combined with the high-pressure roller milling process after mixing the iron concentrate powder and limestone powder, the surface is not easy to peel off, thus improving the pelletizing rate.

This invention discloses a water-based high-filler coating, comprising: 100-150 parts of mixed emulsion, 130-200 parts of filler, 1-4 parts of defoamer, 2-5 parts of dispersant, 1-4 parts of leveling agent, 1.5-4 parts of thixotropic agent, 1-4 parts of curing agent, and 2-5 parts of thickener. By using a blend of waterborne polyurethane emulsion and waterborne acrylic emulsion, the elasticity of polyurethane causes the waterborne paint layer to be subjected to a force opposite to the shrinkage direction during curing, effectively preventing shrinkage. Combined with fillers including hollow glass microspheres and bentonite, the hollow glass microspheres form a three-dimensional rigid skeleton within the waterborne paint layer. When the paint layer shrinks, it is physically supported by the spheres, thus reducing the shrinkage rate. Furthermore, the spherical structure of the hollow glass microspheres disperses and buffers the internal stress of the paint layer, preventing stress concentration and volume deformation, further reducing the shrinkage rate. Finally, the bentonite absorbs water and expands, enlarging the paint layer and preventing water penetration, thereby extending the service life of the MDF.

An absorbent composition includes composite granules formed from at least diatomaceous earth and sodium bentonite. The diatomaceous earth can include greater than 50 weight % of the composition, based on the total weight of the composition, and a weight ratio of the diatomaceous earth to the sodium bentonite can be within a range of from 51:49 to 95:5. The individual particles of diatomaceous earth composed of the composite granules have a d90 particle size of 500 μm or smaller and the individual particles of sodium bentonite composed of the composite granules have a d90 particle size of 250 μm or smaller.

The application discloses a kind of UHPC with pottery clay-like plasticity and preparation method thereof, the formulation includes the following weight percentage components: gel material 140 parts-160 parts;Aggregate 140 parts-160 parts;Modified bentonite 20 parts-35 parts;Reinforcing fiber 3 parts-6 parts;Admixture 1 part-2.5 parts;The modified bentonite is sodium polyacrylate modified calcium-based bentonite.The application builds three-dimensional network structure by modified bentonite and gel material, significantly improves paste yield stress and thixotropy, keeps shape when standing, flows rapidly when shearing, can be bent, modified, shaped into standard workpieces using preset models;PVA / PP fiber and modified bentonite together enhance the density of interface transition zone, reduce the probability of microcrack initiation;Admixture system and modified bentonite produce ion-polymer-clay multiple adsorption, further delay hydration exothermic peak, widen shaping time window to more than 90 minutes, meet the needs of complex curved surface hand sculpture and thin-walled component integrated forming.

This invention relates to the field of drying technology and discloses a highly hygroscopic bentonite-based mineral desiccant and its preparation method. The desiccant prepared by this invention is composed of the following raw materials in the indicated mass percentages: 20wt%-30wt% anhydrous magnesium chloride, 8wt%-12wt% silica gel, 3wt%-8wt% sodium silicate, 4.5wt%-7.5wt% potassium silicate, 5wt%-10wt% attapulgite, with the balance being modified bentonite. The synergistic effect between the components of this desiccant imparts high hygroscopicity, making it promising for applications in electronics and precision instruments, food and pharmaceutical packaging, industrial and logistics transportation, and daily necessities and warehousing.

The application relates to the technical field of water treatment, and particularly discloses a high-efficiency landfill leachate treatment process. The high-efficiency landfill leachate treatment process comprises the following steps: pretreatment: adding a coagulant A into landfill leachate, then adding a coagulant B, carrying out sedimentation or subsidence treatment, and obtaining pretreated liquid; the coagulant A comprises polyferric sulfate; the coagulant B comprises polyaluminum chloride, cationic polyacrylamide, modified bentonite and activated carbon; A / O treatment: sequentially passing the pretreated liquid through an anoxic tank and an aerobic tank to obtain treatment liquid A; MBR treatment: carrying out MBR treatment on the treatment liquid A by using an MBR (membrane bioreactor), to obtain treatment liquid B; and DTRO treatment: carrying out DTRO treatment on the treatment liquid B, to obtain purified water. The treatment process is convenient, and the treatment effect on the landfill leachate is good.

This invention relates to the field of bentonite waterproofing blanket technology, specifically a sodium-based bentonite waterproofing blanket with anti-wrinkle design. The blanket includes a main body with an integrated anti-wrinkle structure at its joint end, comprising: a tenon-and-mortise positioning strip, a tension-distributed reinforcing bar, a limiting frame, an anti-warping edge, and a buffer transition layer. By providing this integrated anti-wrinkle structure at the joint end of the main body, the tenon-and-mortise positioning strip enables interlocking and positioning constraints between adjacent waterproofing blankets. The tension-distributed reinforcing bar balances the multi-directional tension during the laying process, while the limiting frame restricts the displacement and scattering of sodium-based bentonite at the joint. Combined with the anti-warping edge on the outer side of the joint end to constrain edge deformation, and the buffer transition layer to coordinate the stress at the connection points of each component, the functional structures work together to constrain the displacement and deformation of the joint area of ​​the waterproofing blanket.

The application discloses a kind of lead-zinc ore tailings preparation heat preservation sound insulation material, raw material includes by weight in parts calculation: lead-zinc ore tailings 60 parts, fly ash 10 parts, modified bentonite 8 parts, water 37 parts and binder 5 parts.Its preparation method includes: after lead-zinc ore tailings, fly ash, modified bentonite are mixed in proportion, conveying to vertical mill for grinding powder;Water is added in the obtained powder, and stirred for 1h at room temperature, to obtain mixed liquor;Binder is added in mixed liquor, and stirred for 4h at room temperature, to obtain mixed slurry;Mixed slurry is subjected to staged heating sintering, and finally heat preservation sound insulation material is obtained.The preparation method step is simple, suitable for large-scale production, provides a new direction for the treatment and utilization of lead-zinc ore tailings;The heat preservation sound insulation material prepared by the above method has the characteristics of fireproof and corrosion-resistant, high durability, sound absorption and noise reduction, fungus resistance and mildew resistance, and is suitable for building field.

This invention provides a protective slag for continuous casting with a diameter of φ1000-1200mm and its application, relating to the field of steelmaking auxiliary materials technology. It comprises 4-8 parts fluorite, 3-10 parts cement clinker, 1-4 parts white alkali, 22-30 parts coke powder, 1-6 parts bentonite, 8-14 parts bauxite powder, 8-15 parts magnesium olivine powder, 32-42 parts blast furnace slag powder, and 2-3 parts binder. By increasing the carbon content, the temperature field difference at different parts of the large cross-section of the liquid surface is effectively alleviated, eliminating the shrinkage porosity in the middle of the continuously cast billet. By increasing the proportion of Al2O3 and MgO, the binary basicity of the prepared protective slag is reduced, the melting temperature is increased, and the crystallization temperature is increased. Combined with increasing the amount of coke powder added, not only can the melting rate be controlled, but also the three-layer structure of the protective slag in the crystallizer can be controlled, resulting in a suitable liquid slag layer thickness, a small sintered layer thickness, and no large slag streaks. The surface of the continuously cast billet shell is less prone to defects, and overall defects are fewer.

This invention relates to the field of coating technology, and in particular to a durable non-stick pan coating and its preparation method. The coating is composed of the following components: 8-10 parts organic binder, 3-5 parts silica sol, 6-9 parts filler, 1-2 parts modified hexagonal boron nitride, 0.1-0.3 parts water-based bentonite, 0.1-0.2 parts dispersant, 0.1-0.3 parts defoamer, and 5-7 parts water. This invention enhances the binding effect of hexagonal boron nitride in the coating by utilizing the bonding sites of copper and iron particles on the surface of the boron nitride. This promotes efficient bonding of the boron nitride to materials, forming a neatly arranged and dense coating structure, improving adhesion to the substrate, increasing environmental resistance, and enabling the non-stick pan to maintain good performance even after prolonged use.

This invention relates to the field of soil remediation and improvement technology, specifically disclosing a soil remediation and improvement agent for contaminated soil and its preparation method. The remediation and improvement agent comprises the following raw materials in parts by weight: modified remediation masterbatch, hydroxyapatite, sodium bentonite, mineral-derived potassium humate, and polyaspartic acid. The preparation method includes: firstly, using lignin to disperse and fix an iron source on biochar and zeolite to obtain a modified carrier; then, using a colloid formed from sodium alginate and silane, adhering modified lithium titanate and modified bismuth tungstate to the carrier surface, and then applying a low-temperature compound bacterial agent to obtain the modified remediation masterbatch; finally, mixing the masterbatch with other raw materials and granulating. The improver prepared by this invention utilizes the synergistic effect of multiple materials to simultaneously adsorb heavy metals and degrade organic pollutants, and the process is controllable, making it suitable for agricultural applications.

The invention belongs to the technical field of domestic ceramics, and discloses an open fire ignition and quenching resistant domestic ceramic and a preparation method thereof. The domestic ceramic resistant to open fire firing and quenching is prepared from kaolin, bentonite, clay, electroquartz, aluminum oxide, nano zirconium silicate, sodium silicate, a sodium hydroxide solution, sodium humate, ammonium chloride, spodumene, lithium carbonate and deionized water, dry powder and slurry are evenly mixed and stirred, then mechanical pressing is conducted, and a complete ceramic body is obtained; according to the preparation method disclosed by the invention, the raw material ratio and the sintering process are optimized, open fire firing resistance and quenching resistance are synergistically improved, thermal shock resistance is enhanced by controlling the crystallinity of the raw materials, and meanwhile, a composite additive is introduced to improve a high-temperature phase change behavior; and the cost is effectively reduced and the process steps are simplified while large-scale production is realized.

The present application discloses a construction method for large-section rectangular pipe jacking in a cemented conglomerate stratum, comprising the following construction steps: arranging a pipe shed (1) on the outer contour of the top of an excavation cross-section to achieve support of the top of the excavation cross-section; dividing the excavation cross-section into a rock stratum region (2) and a soft soil region (3), arranging positioning drilling holes (4) in the rock stratum region, and arranging positioning grouting reinforcement holes (5) in the soft soil region; performing horizontal drilling in the rock stratum region on the basis of positioning points of the drilling holes, and after drilling of the drilling holes is completed, injecting a bentonite-slaked lime mixed slurry into the drilling holes to fill the drilling holes; performing horizontal high-pressure jet grouting pile construction at the grouting reinforcement holes in the soft soil region to achieve reinforcement of the soft soil stratum; and after treatment of the soft soil region and the rock stratum region is completed, using a pipe jacking machine to perform jacking along a jacking route. The present application enables smooth jacking construction in complex strata having abrupt stratum changes.

Disclosed is a bentonite gel, comprising the following components in parts by weight: 65-85 parts of grease, 12-22 parts of bentonite, and 5-12 parts of propylene glycol carbonate. The preparation method therefor comprises: stirring grease and bentonite at room temperature at a speed of 400-600 r / min for 15-30 min; then adding propylene glycol carbonate; stirring the mixture at a speed of 1200-1600 r / min for 60-180 s until it becomes viscous; and grinding the stirred product to obtain a bentonite gel. The bentonite gel can be used in cosmetics.