17 results about "Bentonite" patented technology

The invention discloses a SiO2 aerogel coating based on a silicone acrylic emulsion as a matrix and a mixed emulsion as a film forming matter and a preparation method of the SiO2 aerogel coating. The raw materials comprise the following components in parts by weight: 30-100 parts of a mixed emulsion, 0-2 parts of a nano stabilizer, 6-15 parts of modified aerogel powder, 0-2 parts of a wetting dispersant, 0-20 parts of rutile titanium dioxide, 0-1 part of a water-based defoaming agent and 5-30 parts of deionized water, the nano stabilizer is one or a mixture of more of bentonite, montmorillonite, attapulgite and cellulose; the aerogel powder is modified SiO2 aerogel powder, the particle size is 500-mesh particles, and the thermal conductivity is 0.014 W / (m.K). The aerogel powder can be effectively wetted and dispersed through multiple functional auxiliaries, the defect that the aerogel powder is difficult to disperse is overcome, the thermal conductivity of the coating is lower due to uniform dispersion of aerogel, and finally the aerogel heat preservation coating with the thermal conductivity of 0.03 W / (m.K)-0.06 W / (m.K) can be obtained.

The invention relates to a preparation method of a multi-layer composite pellet and the pellet. The preparation method comprises the following steps: mixing hematite powder, pellet return ore powder, boric sludge powder and dolomite powder to prepare pretreated hematite powder; uniformly mixing magnetite powder and bentonite to obtain a mixture; pelletizing the mixed material; spraying atomized water and conveying the pretreated hematite powder into the pelletizer to prepare green pellets; and the green pellets are dried, preheated and roasted to produce finished pellets, and screened unqualified products are made into pellet return ore powder to return to participate in batching again. According to the method, the purpose of producing the high-quality pellets with the hematite as the main raw material is achieved, the problem that in the pellet production process, due to the fact that the proportion of the hematite is too high, the pellet index becomes poor is solved, the pellet melting dripping performance is greatly improved, and the technical problem that magnetite concentrate is mainly used for pellet production is solved; and secondary resources such as pellet return charge and boric sludge are fully utilized, so that the production cost of the pellets is reduced.

The invention belongs to the technical field of heavy metal pollution treatment, and relates to preparation of a weakly alkaline soil cadmium passivator and a method for passivating soil lead. The alkalescent soil cadmium passivating agent mainly comprises the following components in parts by weight: 20 to 30 parts of graphene oxide modified biochar, 5 to 10 parts of montmorillonite, 5 to 10 parts of bentonite and 5 to 10 parts of a microbial agent, the microbial agent is a composite microbial agent formed by mixing bacillus subtilis, bacillus amyloliquefaciens, bacillus thuringiensis and pseudomonas nitroreducens. The alkalescent soil cadmium passivator has a very good remediation effect on cadmium and lead in polluted soil, can remarkably improve the physicochemical properties of the cadmium and / or lead polluted soil, increase the content of organic matters in the soil, reduce the migration of the soil in the environment and reduce the content of cadmium in crops, and has a great market popularization value.

The invention relates to the technical field of soil science, and discloses a loess plateau special soil-based mine ecological restoration modifier which is prepared by the following steps: mixing a biological material and an inorganic material to form a biological-physical compound; inoculating specific microorganisms which are subjected to multi-layer packaging into the compound; organic matters and inorganic matters are fixed by utilizing a cross-linked polymer network to form a multi-layer structure; performing intelligent responsive coating treatment on the modifier particles; the prepared modifier is subjected to laboratory and field tests to verify the adaptability and effect of the modifier, and the biological-physical compound is prepared by mixing a local organic material with a certain water content with nano-modified bentonite according to a mixing ratio of 3: 1. By integrating the functionalized nanoparticles, a microbial packaging technology and an intelligent responsive coating, the soil water-retaining property, the nutrient utilization rate and the biological diversity are improved. The design ensures the stability and the lasting effect in an extreme environment, and meanwhile, continuous and efficient ecological restoration is realized.

To provide a magnetic viscous fluid composition that has excellent flowability under high shear and excellent anti-settling properties of magnetic particles when the magnetic field is turned off.SOLUTION: A magnetic viscous fluid composition includes magnetic particles, a base oil, a dispersant, organically modified bentonite, a trimethylammonium salt represented by a specific formula, and a betaine compound. The total content of the trimethylammonium salt and the betaine compound, and the respective contents of the trimethylammonium salt and the betaine compound, are specific amounts relative to the total amount of the magnetic viscous fluid composition. The organically modified bentonite includes at least one selected from the group consisting of dimethyldialkylammonium and benzyldimethylalkylammonium having an alkyl group having 16 to 22 carbon atoms, and the mass loss in an ignition loss test is 39.0% or more relative to the total amount of the organically modified bentonite. The content of the organically modified bentonite is specific amount relative to the total amount of the magnetic viscous fluid composition.SELECTED DRAWING: None

The present disclosure relates to blended cement compositions comprising a combination of Portland cement and calcined bentonite. The present disclosure further relates to methods of producing such cement compositions comprising calcining bentonite, and mixing the calcined bentonite with Portland cement, where the calcined bentonite has a similar particle size distribution to the Portland cement.

The invention discloses a biological fermentation sewage treatment agent and a preparation process thereof, relates to the technical field of sewage treatment, and aims at preparing the biological fermentation sewage treatment agent which takes biological fermentation as main treatment and has an adsorption treatment mode in order to treat huge environmental hazards generated by wastewater production. Through cooperation of various strains, the defect of activity failure of the sewage treatment agent caused by environmental change can be effectively avoided, bentonite is further used as an adsorbent, dopamine modification is performed on the bentonite, and the bentonite is matched with aldehyde dextran to generate a Schiff base structure, so that the sewage treatment agent has a good treatment effect. Therefore, the bentonite also has a relatively strong chelating capability on metal ions, and the removal of heavy metal ions in a water body is accelerated; and the glucan is used as a polysaccharide, and can be degraded into glucose to serve as a carbon source of the strain, so that the breeding of the sewage treatment agent in the early stage of the strain is accelerated, and the working efficiency is improved.

The present application belongs to the technical field of sewage treatment, and particularly relates to a composite biological agent for sewage treatment and a preparation method thereof. The composite biological agent comprises the following raw materials in parts by weight: modified bentonite 20-30 parts, unicellular algae 5-10 parts, Rhus succedanea leaf extract 5-10 parts, biological enzyme 1-3 parts, chitin 20-30 parts, trace elements 10-15 parts, and inorganic salt 10-20 parts. The preparation process of the modified bentonite is as follows: bentonite is added into a hexadecylmethyl dihydroxyethyl ammonium bromide aqueous solution and stirred, and then the pretreated bentonite is obtained by filtration and drying; the pretreated bentonite and ferric nitrate are added into water, and stirred to obtain an A solution; sodium carbonate and sodium phosphate are added into water, and stirred to obtain a B solution; the A solution is heated, and the B solution is added under stirring to react, and then the product is obtained by purification and calcination. The biological agent can improve the sewage treatment effect.

The application provides a kind of oil-based drilling and completion fluid suspending stabilizer and a preparation method thereof.The oil-based drilling and completion fluid suspending stabilizer includes modified bentonite, modified nano-silica and nano-calcium carbonate, wherein the modified bentonite is obtained by using a first silane coupling agent for first modification treatment of bentonite, and the modified nano-silica is obtained by using a second silane coupling agent for second modification treatment of nano-silica.The oil-based drilling and completion fluid suspending stabilizer of the application enhances the suspending stability of oil-based drilling and completion fluid.

The present invention addresses the problem of providing an antirust composition having sufficient corrosion resistance, being excellent in viscosity reduction rate in response to temperature rise, and hardly causing sagging due to temperature rise when formed into a coating film.　The problem is solved by an antirust composition comprising an antirust additive, bentonite, a filler, a hardened oil, and a diluent, wherein the content of wax is in the range of 0%-1% by mass, the content of the antirust additive is in the range of 16%-35% by mass, the content of bentonite is in the range of 2%-6% by mass, and the viscosity reduction rate in the temperature range of 20°C-80°C is 25% or less.

A method for manufacturing a wet slurry containing a calcium bentonite filler for a cartonboard manufacturing process may include: mixing a calcium bentonite ore with water to form an initial slurry; screening the initial slurry to remove aggregate having a particle size greater than 250 microns; grinding the initial slurry until the d50 particle size of the slurry is 10 microns or less and the weight percentage of particles having a particle size of 45 microns is less than 5 wt% based on the total weight of the slurry; and screening the ground slurry to remove particles having a particle size greater than 44 microns, thereby producing a final slurry.

The invention discloses an environment-friendly water-based drilling fluid suitable for tight gas as well as a preparation method and application thereof, and relates to the technical field of oil and gas field drilling, the environment-friendly water-based drilling fluid comprises the following components: bentonite slurry, sodium hydroxide, xanthan gum, a zwitterionic polymer coating agent, a filtrate reducer, a plugging agent, an inhibitor, potassium chloride, a lubricant, a defoaming agent, a viscosity reducer and barite. The preparation cost is low, the wide application of the environment-friendly water-based drilling fluid is promoted, and the environment-friendly treatment agent for the environment-friendly water-based drilling fluid suitable for tight gas is completely environment-friendly; the lubricating oil has excellent rheological filtration property, lubricating property and sedimentation stability; the water-based drilling fluid has the advantages that the water-based drilling fluid has excellent temperature-resistant stability, the fluctuation of the rheological property along with the temperature rise is small, meanwhile, the water-based drilling fluid system has excellent gas cut prevention capability and degassing effect, and the system performance is stable in the continuous methane injection process; the shale inhibitor has excellent inhibition performance and reservoir protection performance, and can effectively inhibit hydration and dispersion of shale.

The invention relates to the technical field of pet product development, discloses bentonite broken pet litter and a preparation method thereof, and aims to solve the problem of insufficient comprehensive performance of existing broken cat litter. The pet sand is prepared from the composite modified bentonite blocky material, the material modification processing technology is simple, and the raw materials are taken from the nature. The composite material has the characteristics of high strength, low dust density, stable property and the like. The use efficiency of the broken cat litter can be remarkably improved, and compared with unmodified bentonite, the prepared cat litter is better in water absorption, lower in dust capacity, higher in adsorption capacity, almost free of inhalable particles in use and good in deodorization and odor removal capacity. Compared with bean starch, corn starch and other organic raw materials, the starch does not mildew in the processing, storage and other processes, does not have toxin or peculiar smell, is high in weather resistance, is low in content of heavy metals such as lead and arsenic, and is environment-friendly in preparation and use.

The invention relates to a gel ridge stone-based double-layer structure material and a preparation method thereof, and belongs to the technical field of new materials. The invention aims to solve the technical problems of no adsorption performance on anion pollutants and low use additional value of the existing gel ridge stone. According to the invention, a double-layer composite structure material is formed by in-situ growth of hydrotalcite nanosheets on the surface of a gelled stone serving as a growth template through a hydrothermal method. The preparation method comprises the following steps: preparing a precursor solution, dispersing the gelled stone, carrying out hydrothermal reaction, washing, drying and the like. The material has the lamellar characteristics of the kaolinite and the hydrotalcite, can adsorb zwitterionic pollutants such as methyl orange and methylene blue at the same time and can load zwitterionic corrosion inhibitors such as NO2 <-> and Ce < 3 + >, the adsorption capacities can reach 78-86 mg / g and 63-72 mg / g respectively, the functional diversity and additional value of the kaolinite are remarkably improved, and the application potential of the kaolinite in the fields of water purification and corrosion inhibition is expanded.

The invention belongs to the technical field of sewage treatment, and particularly relates to a composite biological agent for sewage treatment and a preparation method thereof. The composite biological agent is prepared from the following raw materials in parts by weight: 20 to 30 parts of modified bentonite, 5 to 10 parts of unicellular algae, 5 to 10 parts of rhus chinensis leaf extract, 1 to 3 parts of biological enzyme, 20 to 30 parts of chitin, 10 to 15 parts of trace elements and 10 to 20 parts of inorganic salt. The preparation process of the modified bentonite comprises the following steps: adding bentonite into a hexadecyl methyl dihydroxyethyl ammonium bromide aqueous solution, stirring, filtering, and drying to obtain pretreated bentonite; adding the pretreated bentonite and ferric nitrate into water, and uniformly stirring to obtain a solution A; adding sodium carbonate and sodium phosphate into water, and uniformly stirring to obtain a solution B; and heating the solution A, adding the solution B under a stirring condition for reaction, and purifying and calcining after the reaction is completed to obtain the catalyst. The biological agent can improve the sewage treatment effect.

The invention provides spherical bentonite pet sand and a preparation method thereof, and belongs to the technical field of pet product development. The spherical bentonite pet sand is prepared from specific modified bentonite, and the problems that in the prior art, related products are high in dust content, prone to pulverization, low in water absorption rate, unstable in caking property or prone to mildewing, high in cost, limited in raw material source and the like are solved. According to the preparation method provided by the invention, the prepared spherical bentonite sand for pets has excellent water absorption, caking strength and deodorization effect, the dust capacity is lower, the adsorption capacity is higher, and inhalable particles are hardly generated in the use process. The product provided by the invention does not mildew in the processing, storage, transportation and use processes, does not generate toxin, does not generate unfriendly odor, has stronger weather resistance, is very low in content of heavy metals such as lead, arsenic and the like, has less influence on pet health, and is environment-friendly.

The invention belongs to the technical field of soil improvement, and discloses a soil organic matter increasing system and method based on bacteriophage-bentonite coordinated regulation, and the system comprises a bacteriophage regulation module, a bentonite carbon sequestration module and an intelligent response module; the bacteriophage regulation and control module comprises a drip irrigation device and T4-like bacteriophage suspension liquid, and the drip irrigation device is used for drip irrigation of the T4-like bacteriophage suspension liquid at a preset position; the bentonite carbon sequestration module is bentonite modified by hexadecyl trimethyl ammonium bromide and ferric oxide; the intelligent response module comprises a microbial activity sensor and a judgment unit, the microbial activity sensor is deployed in soil and electrically connected with the judgment unit, and the judgment unit is electrically connected with the drip irrigation device and used for judging the microbial activity sensor, comparing the microbial activity sensor with preset parameters and outputting instructions. The T4-like bacteriophage suspension is matched with cetyltrimethylammonium bromide and ferric oxide modified bentonite to solve the problems that the mineralization loss rate is high, and heavy metal accumulation or plant diseases and insect pests may be caused after long-term application.