64 results about "Sepiolite" patented technology

The invention discloses double-layer fancy glaze with chapped ground texture and a preparation method of the double-layer fancy glaze, and relates to the technical field of ceramic glaze. The double-layer fancy glaze is composed of a ground glaze layer and a cover glaze layer. The ground glaze raw materials comprise potassium feldspar, kaolin, calcite, quartz, dolomite, zinc oxide and pigment; the cover glaze raw materials comprise potassium feldspar, waste porcelain powder, blank powder, chinastone, limestone, sepiolite, quartz, zirconium silicate with the particle size D50 being less than or equal to 1.0 mu m and pigment. The preparation method comprises the following steps: respectively carrying out ball milling to prepare ground glaze slip (32-40 baume degrees) and cover glaze slip (51-53 baume degrees); spraying ground glaze on the green body, drying, and then soaking with cover glaze; and finally, sintering at the temperature of 1250-1270 DEG C in a reducing atmosphere. Through the synergistic effect of the sepiolite and other components, the cover glaze has high surface tension, forms a microcrack network during drying, generates controllable glaze shrinkage during firing, forms a three-dimensional chap texture with crack width of 1-5mm and strong curled and raised crack edges, and meanwhile, the ground glaze completely covers a green body, so that the product practicability is ensured.

The invention discloses a high-temperature dechlorinating agent for removing hydrogen chloride gas and a preparation method of the high-temperature dechlorinating agent, and belongs to the technical field of dechlorinating, and the preparation method of the high-temperature dechlorinating agent for removing the hydrogen chloride gas comprises four steps of preparing sepiolite-loaded active calcium powder, preparing copper-aluminum coated calcium carbonate whiskers, forming and roasting. According to the high-temperature dechlorinating agent for removing the hydrogen chloride gas, the penetration chlorine capacity is 78.5 to 81.7 percent, the crushing strength is 142 to 160N. Cm <-1 >, and the abrasion rate is 0.8 to 1.2 percent.

The invention discloses an organic-inorganic composite acid soil conditioner with synergism of nitrogen element synergism and soil expansion and application, and belongs to the technical field of soil conditioners. The modifier prepared by the invention is prepared from an acid neutralizer, a structure modifier, a capacity expansion synergist and a nitrogen synergist and is prepared from the following components in parts by weight: 18 to 22 parts of dolomite powder, 6 to 10 parts of lime powder, 20 to 24 parts of oyster shell powder, 8 to 12 parts of humic acid, 4 to 8 parts of sargassum, 1 to 3 parts of sodium alginate, 7 to 11 parts of charcoal, 5 to 9 parts of sepiolite powder, 3 to 7 parts of bentonite, 6 to 10 parts of poly gamma-calcium glutamate and 3 to 7 parts of chitosan. The soil conditioner can regulate and control the soil acidity, buffer the soil capacity, improve the soil structure and balance soil nutrients, solves the problems of high re-acidification rate, soil hardening and nutrient imbalance of a traditional lime conditioner, and is suitable for pHlt; and 6.5, repairing the acid soil.

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.

The application discloses a method for preparing a magnesium silicate hydrate cement material by using sepiolite, and the method comprises the following steps: dissolving sepiolite by using a strong acid, and separating a solution and a residue; adding NaOH into the solution to obtain Mg(OH)2 precipitate; separating the Mg(OH)2 precipitate, and calcining to obtain MgO; mixing a water reducing agent, the residue and the MgO, and adding water to maintain, so as to obtain the magnesium silicate hydrate cement material. The method uses sepiolite which is rich in the earth's crust as a main raw material, and realizes low-cost and large-scale preparation of the magnesium silicate hydrate cement material.

The invention relates to an efficient and long-life inorganic dry powder coating with a self-humidifying function and a preparation method thereof, and belongs to the technical field of inorganic coatings. The inorganic dry powder coating comprises the following components in parts by weight: 30-40% of potassium silicate, 10% of expanded perlite, 10-25% of high-activity sepiolite nanofiber, 10% of calcined shell powder, 18-28% of quartz sand and 2-3% of an auxiliary agent. The preparation method comprises the following steps: firstly, treating a sepiolite raw material by virtue of a synergistic process of ultrasonic beam splitting and citric acid activation, so as to obtain high-activity sepiolite nanofibers which are fully dissociated, have nano hierarchical pore channels and are rich in hydrophilic groups; and compounding the high-activity sepiolite nanofiber with calcined shell powder, expanded perlite, quartz sand and potassium silicate to synergistically construct an inorganic coating system with optimized microstructure and efficient moisture absorption / liberation performance. The coating is simple in preparation process and environment-friendly, has excellent mechanical properties and self-humidity-regulating performance, still keeps an efficient humidity-regulating effect in a long-term service environment, and has outstanding long-acting stability.

According to the solid stemming with the high CO adsorption performance and the application of the solid stemming, modified sepiolite is adopted as a core functional component, natural sepiolite is modified through an acidification-hydrothermal-copper loading triple process, the specific surface area, the pore volume and the surface active site density of the solid stemming are remarkably increased, and the CO adsorption performance is improved; the solid stemming is endowed with efficient physical and chemical adsorption capacity on CO molecules. At the moment of blasting, the blasthole plugging material is crushed and dispersed along with high-pressure airflow, and the modified sepiolite micro powder is diffused in the underground space after blasting, so that escaping CO gas can be quickly captured and fixed, the forced ventilation and smoke discharge time is shortened, and the roadway tunneling efficiency is improved. And by controlling the concentration of the saline solution and the ratio of the modified sepiolite to the saline solution, the solid stemming has good plasticity and dispersity, is convenient for underground operation and is not easy to bond, and the construction efficiency is improved.

Disclosed is a moisture regulating ceramic material production method which includes the following process steps: mixing starting powders containing sepiolite and reactive alumina sulfate; grinding the starting powders; obtaining granules by dry granulation using alkaline solution with the starting powders; carrying out a pressing process of the granules; and obtaining the materials.

The invention relates to an RDF combustion rod based on municipal solid waste and a preparation method thereof, and the preparation method comprises the following steps: selecting municipal solid waste with a calorific value, and carrying out low-temperature drying-microwave modification pretreatment to obtain pretreated domestic waste; sequentially carrying out primary crushing, sorting, impurity removal and crushing on the pretreated household garbage to obtain a crushed material; performing high-temperature activation on bentonite to obtain high-temperature activated bentonite; soaking sepiolite with a fibrous structure in a hydrochloric acid solution, washing with water until the sepiolite is neutral, and drying to obtain modified sepiolite; and carrying out high-temperature roasting-ultrasonic dispersion treatment on sludge gasification slag to obtain pretreated sludge gasification slag, mixing the pretreated sludge gasification slag with the crushed material, high-temperature activated bentonite and modified sepiolite, and carrying out pressure forming to obtain the RDF combustion rod. Municipal solid waste with a calorific value is pretreated, so that the reaction activity is improved; and the pretreated sludge gasification slag is used as a catalyst, so that the combustion performance of the RDF combustion rod is remarkably improved.

The invention relates to the field of power transmission line galloping prevention, in particular to a damping composite material which is prepared by adopting a double-phase elastomer matrix and compound nano filler system, taking 100 parts of ethylene-propylene-diene rubber as a matrix, and matching 30-50 parts of hydroxyl-terminated polybutadiene, 40-65 parts of silane modified sepiolite, 10-20 parts of hydroxylated graphene, 6-15 parts of di-iso-decylphthalate and the like. Through a synthesis process, the damping composite material is made into the damping element, and the damping element is applied to a damper of the phase-to-phase spacer, so that the problems that damping of a traditional phase-to-phase spacer loses efficacy at low temperature in a cold region, and insulation and damping performance are difficult to consider are solved, and the damping element can still efficiently dissipate galloping energy at extremely low temperature; therefore, the anti-galloping performance and the operation safety of the power transmission line in the cold region are remarkably improved.

The invention discloses a preparation method and application of a calcium-phosphorus-loaded hydrothermal humic carbon-based soda saline-alkali soil slow-release conditioner, and belongs to the technical field of soda saline-alkali soil remediation and fertilizer. The invention aims to solve the problems that a modifier used in an existing soda saline-alkali soil improvement technology is short in validity period and inconvenient to transport and apply, possibly causes secondary environmental risks and cannot synergistically and continuously provide nutrients such as phosphorus for soil. The method comprises the following steps: 1, preparing phosphorus-rich hydrothermal humic carbon; 2, preparing sepiolite modified phosphorus-rich hydrothermal humic carbon; and 3, preparing a cross-linked protective layer. The invention breaks through the limitation of single function of the traditional saline-alkali soil remediation technology, develops the soda saline-alkali soil conditioner which is green, low in cost, easy to apply and high in stability and integrates multiple environment responses of high Na < + >, high pH and phosphorus starvation, and solves the problem of phosphorus starvation of the remediated soil while reducing the harm of soil salinization. And a green and sustainable solution is provided for treatment of soda saline-alkali soil.

The invention relates to the technical field of garden ecological environment restoration, in particular to a garden ecological environment restoration agent and a preparation method and application thereof. The garden ecological restoration agent is prepared from the following components in parts by weight: 30 to 50 parts of modified biochar, 5 to 15 parts of wollastonite, 5 to 15 parts of hydroxyapatite, 10 to 20 parts of sepiolite, 15 to 25 parts of humic acid and 3 to 8 parts of a microbial agent, the garden ecological environment repairing agent provided by the invention has a relatively good repairing effect on the soil environment.

The invention discloses a preparation process of a slow-release underground water organic pollution degradation purifying agent, which comprises the following steps: (1) adding sepiolite powder, cobalt salt and iron salt into water, uniformly mixing, adjusting to be alkaline, separating out solids, washing, drying, and calcining to obtain active catalytic powder; and (2) uniformly mixing activated carbon with the persulfate saturated solution, freeze-drying, and grinding to obtain the modified activated carbon powder. Granulating the modified activated carbon powder, and drying to obtain core particles; and (3) uniformly mixing the styrene-butadiene-styrene block copolymer emulsion with the active catalytic powder to obtain a slow-release film solution, coating the surface of the core particle with the slow-release film solution, and drying to obtain the degradation purifying agent. According to the present invention, the sulfate and the catalyst can be completely contacted, the problems of rapid consumption and low utilization rate of the persulfate can be effectively alleviated, the degradation effect on the organic pollutants is improved, and the good purification effect can be maintained for a long time.

The invention discloses multi-scene self-adaptive gradient composite drilling fluid slurry and a preparation method of the multi-scene self-adaptive gradient composite drilling fluid slurry. The multi-scene self-adaptive gradient composite drilling fluid slurry is prepared from 20%-30% of modified sepiolite, 12%-25% of sodium red clay, 8%-15% of a nanofiller-red clay compound, 4%-8% of a pH response type filtrate reducer, 3%-6% of an environment-friendly lubricant, 0.5%-2% of a bio-based antibacterial agent and the balance of deionized water. The modified sepiolite is modified by grafting acrylic acid with a silane coupling agent; the nano filler-red clay compound is a compound formed by loading nano calcium carbonate on the surface of red clay; the pH response type filtrate reducer is a compound of polyaspartic acid and chitosan quaternary ammonium salt, or a compound of polyepoxysuccinic acid and chitosan quaternary ammonium salt; the environment-friendly lubricant is a modified vegetable oil microemulsion; the density of the multi-scene self-adaptive gradient composite drilling fluid slurry is 1.3-1.7 g / cm < 3 >. The invention solves the problem that the existing drilling fluid is insufficient in salt resistance and environmental protection property.

The invention relates to the technical field of sewage treatment, and provides an organochlorine remover and a preparation method thereof, the organochlorine remover comprises an inorganic adsorbent and an organic adsorbent; the inorganic adsorbent is composite sepiolite; the preparation method of the composite sepiolite comprises the following steps: dispersing sepiolite in a solvent, adding a copper salt solution, a cerium salt solution and ethylene glycol, stirring for reaction, filtering, washing, drying and calcining to obtain the composite sepiolite. According to the technical scheme, the problem that an organic chlorine adsorbing material in the related technology is low in organic chlorine pesticide removal rate is solved.

The invention discloses a preparation method and application of a heavy metal cadmium contaminated soil remediation conditioner, and relates to the technical field of environmental protection, the heavy metal cadmium contaminated soil remediation conditioner comprises the following components by weight: 30-40 parts of zinc modified charcoal, 10-20 parts of montmorillonite, 5-10 parts of nano iron powder, and 30-55 parts of high temperature activated sepiolite. The heavy metal cadmium contaminated soil remediation conditioner has high adsorptive selectivity, strong fixing stability and mild pH adjustment, can improve the soil fertility, is efficient in multi-component synergism, and is suitable for different types of cadmium contaminated soil.

The invention provides a concrete hydration temperature rise inhibitor for a high-temperature environment and a preparation method and application thereof.The concrete hydration temperature rise inhibitor for the high-temperature environment is a mixture obtained by adsorbing acid, alcohol and esterification products on acid-treated sepiolite, and the preparation method comprises the following steps that 1, sepiolite and acid are put into water, heat preservation is conducted after stirring is conducted, and a mixture is obtained; a stable liquid phase is obtained; (2) continuously adding alcohol, continuously stirring for 1 hour, pouring a first liquid phase which is fully stirred into a tray, and drying in a drying oven; and (3) increasing the drying temperature, continuously drying, closing the drying oven, naturally cooling, crushing, and sieving with a 45-mesh sieve to obtain the concrete hydration temperature rise inhibitor for the high-temperature environment. The concrete hydration temperature rise inhibitor for the high-temperature environment has the effects in the early and middle stages of hydration, the mode has little influence on the induction period, the concrete hydration temperature rise inhibitor is suitable for being applied to concrete entering a mold at the high temperature (30 DEG C or above), and meanwhile the compressive strength of the concrete within 28 days can be guaranteed.

A magnetorheological fluid utilizing properties of thixotropic agents and having well-balanced sedimentation properties includes: a magnetic material; a medium to allow the magnetic material to be dispersed therein; and at least one dispersant selected from sepiolite and smectite or a dispersant including sepiolite and bentonite.

This invention relates to an oil-based drilling fluid plugging agent and its preparation method, comprising granular materials made of the following components by weight percentage: asphalt powder: 15-28 wt%; organic clay: 6-16 wt%; rock fiber: 25-40 wt%; nano-SiO2: 5-12 wt%; sepiolite: 8-15 wt%; elastic graphite: 8-18 wt%; and polyurethane (TPU) powder particles: 10-20 wt%. This invention features good compatibility, high efficiency, and excellent plugging effect. It can repair formation defects in the wellbore, prevent wellbore leakage, enhance the retention and plugging effect of oil-based drilling fluid in formation microfractures, improve wellbore stability, and effectively plug and strengthen the wellbore.

This invention relates to a method for preparing geopolymers under low-temperature conditions. The method involves adding an alkali activator solution to a dry-mixed composite cementitious material, stirring thoroughly, and then proceeding to a molding process. During molding, air bubbles and gaps are removed by vibration. The mixture is then cured at 20-30°C to obtain a solidified geopolymer. The dry-mixed composite cementitious material is composed of mineral powder, fly ash, wollastonite powder, and sepiolite powder. The mineral powder and fly ash form a mineral powder / fly ash mixture, with wollastonite powder comprising 3%-5% of the mixture and sepiolite powder comprising 0.8%-1.2%. This invention, by introducing wollastonite powder and sepiolite powder, constructs a multi-level synergistic activation system, effectively overcoming the bottleneck of low-temperature reactions and solving the problems of existing geopolymers being unsuitable for low-temperature applications and having high preparation costs.

The invention belongs to the technical field of mortar compositions, and particularly relates to a slurry material for a large-diameter slurry shield and a preparation process of the slurry material. The slurry material is prepared from the following components in parts by mass: 500 parts of water, 1.8 to 2.5 parts of polyacrylamide, 1.5 to 2 parts of sodium carbonate, 2.6 to 4 parts of aluminum salt, 15 to 30 parts of sodium bentonite, 7 to 12 parts of sepiolite powder, 3.5 to 6 parts of a modifier, 2 to 3.5 parts of an intercalator, 0.25 to 0.5 part of sodium metasilicate and 5.5 to 8.5 parts of a tackifier. Wherein the modifier is prepared from H4TCPP, pyridine and methanol according to the mass ratio of 1: (2-2.6): (10-13). The preparation process comprises the following steps: respectively preparing a solution, a suspension and the like, and then stirring the solution, the suspension and other components step by step to prepare the slurry material. The problems that when a traditional slurry material is used for large-diameter slurry shield construction, the film forming quality is poor, leakage is prone to occurring, and then the environmental protection property is poor are solved.

The invention relates to the technical field of tailing treatment, and particularly discloses a tailing composite modifier for acid soil treatment and a preparation method thereof.The tailing composite modifier is prepared from, by weight, 30-60 parts of alkaline conditioning materials, 20-50 parts of organic matter materials, 10-30 parts of mineral adsorption materials, 0.5-5 parts of microbial agents and 10 parts of tailing powder. The alkaline conditioning material is selected from one or more of quick lime, slaked lime, calcium carbonate, dolomite powder, steel slag, carbide slag and red mud, and the organic matter material is selected from one or more of humic acid, weathered coal, decomposed straw, decomposed livestock and poultry manure, biochar and organic sludge fermentation products. The mineral adsorption material is selected from one or more of bentonite, sepiolite, zeolite, vermiculite, attapulgite and ardealite. According to the tailing composite modifier for acidic soil treatment and the preparation method of the tailing composite modifier, efficient, stable and long-acting ecological restoration can be carried out on acidic soil.

This invention discloses a passivation material for alkaline cadmium-contaminated soil and its preparation method, belonging to the field of alkaline cadmium-contaminated soil remediation technology. The passivation material is composed of the following raw materials by weight percentage: 35%-50% modified blast furnace slag, 20%-30% activated sepiolite, 10%-20% calcium-based bentonite, 8%-15% desulfurized gypsum, and 2%-7% biochemical humic acid. All raw materials meet the heavy metal content limits. The preparation method includes three steps: raw material pretreatment, premixing, and finished product blending. The process is simple and low-cost. This invention reduces the content of available cadmium in the soil through the synergistic effects of precipitation, adsorption, and complexation, while simultaneously inhibiting cadmium migration to crops, avoiding exacerbation of soil salinization, and is suitable for alkaline soil environments. It can be widely promoted, effectively ensuring agricultural product safety and soil ecological health.

The application belongs to the technical field of power cables, and particularly relates to a HC type fire-resistant cable for ships and marine engineering and a processing method. The HC type fire-resistant cable comprises a cable core, an outer fire-resistant layer, an armored layer and an outer sheath layer from inside to outside. The outer fire-resistant layer comprises an oxygen barrier layer and a heat insulation layer from inside to outside. The heat insulation layer is a ceramicized polyolefin, and the composition comprises EVA, ceramicized filler, a first additive, an antioxidant and a lubricant. The ceramicized filler is a mixture of rounded corner crystalline silicon powder, sepiolite fiber, low-melting point glass powder and zinc borate. The first additive is a mixture of oligomeric siloxane, perhydropolysilazane and aramid powder. The HC type fire-resistant cable for ships and marine engineering provided by the application can only pass the HC fire-resistant 1100 DEG C+ impact test, and has excellent oil resistance and mechanical impact resistance.

The invention discloses a sole material, a preparation method thereof and a sole prepared from the sole material. The sole material is prepared from the following raw materials: EVA resin, composite modified filler, nitrile rubber, a cross-linking agent, a foaming agent and an anti-aging agent. The specific formula comprises the following raw materials: 70-80 parts of EVA resin, 10-20 parts of a composite modified filler, 3-5 parts of nitrile rubber, 0.5-2 parts of a cross-linking agent, 3-6 parts of a foaming agent and 0.5-1 part of an anti-aging agent. According to the invention, the composite modified filler is added into the sole material, and the composite modified filler comprehensively considers the respective characteristics and optimal formula proportion of the calcium carbonate powder, the iron-ore slag powder and the sepiolite, and meanwhile, the silane coupling agent can form a chemically bonded interface layer on the surface; the bonding force with the EVA resin material and the internal dispersity are enhanced, the low cost of the calcium carbonate powder and the improvement of the hardness and the dimensional stability are fully exerted, the iron-ore slag powder is rich in metal elements such as iron, the sepiolite has good adsorbability, the wear resistance and the skid resistance are enhanced, and the use requirements are better met.

The invention discloses a high-stability diuron wettable powder, and belongs to the technical field of herbicides, the high-stability diuron wettable powder comprises a pesticide active compound, a dispersant, a wetting agent, a suspending agent and a filler, the pesticide active compound comprises MCPA sodium, ametryn and diuron, and the filler is quaternary ammonium salt chitosan modified sepiolite; the mass ratio of the raw pesticide to the filler is (3-4): 1; according to the invention, meerschaum functionally modified by chitosan quaternary ammonium salt is used as a filler. According to the diuron wettable powder disclosed by the invention, the sepiolite has extremely strong adsorption and dispersity, extremely high thermal stability, salt resistance and the like, and the filler is prepared from the sepiolite as a raw material and is combined with the chitosan quaternary ammonium salt, so that the diuron wettable powder has excellent suspension stability and hard water resistance and can ensure that liquid medicine is uniform, a spray head is not blocked and the pesticide effect is stably exerted; the method is especially suitable for high-hardness water areas.

To provide an adsorbent for polycyclic aromatic hydrocarbons containing clay minerals such as sepiolite and attapulgite, which exhibits excellent removal rates for polycyclic aromatic hydrocarbons. [Solution] An adsorbent comprising at least one of sepiolite and attapulgite, wherein, in the pore distribution measured by mercury intrusion, the volume of pores in the range of pore diameter 10 nm or more and 100 nm or less is in the range of 0.50 mL / g or more and 2.00 mL / g or less, and the volume of pores in the range of pore diameter 10 nm or more and 30 nm or less is in the range of 0.40 mL / g or more and 1.20 mL / g or less.

This application discloses a geotextile for moisture control in unsaturated soil, its preparation method, and its application. The moisture-controlling geotextile comprises: a geotextile having carboxyl groups on at least one side of its surface; and a sepiolite coating located at least on one side of the carboxyl-containing surface of the geotextile, the sepiolite coating being connected to the carboxyl groups on the geotextile surface via a silane coupling agent. Thus, the moisture-controlling geotextile can actively absorb water, achieving integrated water absorption and drainage, and can continue to drain water even when soil moisture content is low, thereby shortening water drainage time and reducing the risk of soil softening.