26 results about "Bentonite powder" patented technology

This invention discloses a high-density composite for long-lasting water bottom improvement and disinfection, and its preparation method, relating to the field of aquaculture technology. The high-density composite is prepared from the following raw materials: a premixed additive, potassium persulfate, sodium chloride, gelatinized starch, bentonite powder, attapulgite, cement, calcium carbonate, titanate coupling agent, purified water, and molasses. This invention also discloses a method for preparing the high-density composite. The high-density composite for long-lasting water bottom improvement and disinfection of this invention has advantages such as long duration of slow-release bottom improvement, good stability, simple preparation method, low production cost, and ease of large-scale production. It fills the gap in slow-release bottom improvement products and solves the problems of current slow-release bottom improvement technologies, such as difficulty in controlling the slow-release rate, complex preparation methods, high production costs, and difficulty in large-scale production.

The utility model relates to bentonite impurity removing equipment, which is used for solving the technical problems that most of filter screens are horizontally arranged, materials or impurities are easily accumulated above the filter screens to cause blockage, and during screening, most of the filter screens can be used for picking and taking out large-particle impurities in bentonite powder by workers, so that manpower and material resources are extremely easily wasted. A feeding port is formed in the top end of the first-stage screening box, a discharging port is formed in the side wall, close to the bottom, of the first-stage screening box, two L-shaped and opposite sliding rails are arranged in the wall of the first-stage screening box, a large-diameter screen is arranged on the two sliding rails in a sliding mode, notches are formed in the two ends of the large-diameter screen, and a pull ring is arranged on the top face of the large-diameter screen. A small-caliber screen is fixedly installed on the side wall of the first-stage screening box, a first motor is arranged at the bottom of the first-stage screening box, a first rotating shaft is installed on the first motor, a first shifting rod is installed on the first rotating shaft, a second shifting rod is installed on the first rotating shaft, and a second-stage screening box is connected to the side, close to the discharging port, of the second-stage screening box in a communicating mode.

The method of producing high-density bentonite pellets or bricks involves preparing an activated bentonite suspension in a dedicated tank by mixing dry bentonite powder with activated bentonite milk in the form of a 12% suspension in a continuous mixer and then pressing the resulting mixture under high pressure into the shape of pellets or bricks.

The invention relates to the field of organic soil, and particularly discloses drilling fluid organic soil and a preparation method thereof. The preparation method of the drilling fluid organic soil comprises the following steps: crushing calcium bentonite to prepare slurry, adjusting the pH value to 5-6, and acidizing to obtain activated bentonite slurry; adding urea accounting for 10-30% of the mass of the calcium bentonite into the activated bentonite slurry, and carrying out primary intercalation reaction to obtain primary intercalated bentonite slurry; and adding a secondary intercalator accounting for 5-20% of the mass of the calcium bentonite into the primary intercalation bentonite slurry, carrying out a secondary intercalation reaction, and carrying out filter pressing and drying to obtain the organic soil for the drilling fluid. The drilling fluid organic soil has the advantages of being wide in raw material source, low in cost and easy to produce and operate.

The application relates to the technical field of materials, and discloses a carbon-based adsorption material for treating heavy metal contaminated soil, which is prepared by using surface functionalized activated carbon as a base material, using bentonite and fly ash as auxiliary materials, bonding through biomass guar gum, and then mixing and sintering. The carbon-based adsorption material is prepared by using surface functionalized activated carbon as the main substance of the adsorption material, using bentonite and fly ash as auxiliary materials, realizing adsorption enrichment of heavy metal ions in the soil through the ultrahigh specific surface area of the activated carbon and the bentonite, then performing chemical solidification of the heavy metal ions by using active groups in the structure of the surface functionalized macromolecular reagent, and forming an adsorption mode of adsorption first and then solidification, so that the prepared adsorption material has extremely strong adsorption capacity and does not cause secondary pollution.

The invention discloses a novel plaster and a preparation method thereof.The plaster is prepared from honey as a main raw material through the steps of fermentation, heating, esterification, acetylation and the like, the honey, diammonium phosphate, vitamin B and yeast are mixed and fermented, and alcohol, carbon dioxide and acetic acid are generated; heating to volatilize alcohol and carbon dioxide, and then adding ethylene glycol, glycerol and carboxymethyl cellulose for esterification and acetylation reaction; then adding anhydrous magnesium sulfate powder and bentonite powder, and uniformly stirring; heating, adding acetic acid, a triblock thermoplastic elastomer and beewax, and stirring to form a viscous solution; and finally, adding the herbaceous plant micro powder and borneol, mixing, and coating and forming. In the application process of the plaster, the bentonite absorbs water and expands, the anhydrous magnesium sulfate reacts with water to form a crystalline hydrate, the surface of the plaster is of a honeycomb loose porous structure, the contact area with the skin is increased, the transdermal absorption efficiency is improved, the comfort is improved, swelling is relieved, the manufacturing method is simple, and the cost is low.

This invention discloses a method for treating bisphenol A type epoxy resin wastewater using calcium-based bentonite. The method includes the following steps: centrifuging bentonite powder N times (N=2~3) according to a centrifugation treatment method, collecting the calcium-based bentonite suspension and calcium-based bentonite; mixing the calcium-based bentonite suspension with the bisphenol A type epoxy resin wastewater, adding calcium-based bentonite to obtain a mixed solution; stirring the mixed solution at 50~90 °C, allowing it to stand, and centrifuging to obtain organically modified sodium bentonite with industrial application value and purified wastewater with COD emission levels meeting standards. This method significantly reduces the COD content of bisphenol A type epoxy resin wastewater, meeting the direct COD emission standard in the Chinese national standard GB 31572-2015 "Emission Standard of Pollutants for Synthetic Resin Industry". It requires no chemical modification agents, causes no secondary pollution, has mild reaction conditions, a simple process flow, and low production costs.

This invention discloses a production process and system for preparing high-performance lightweight aggregate using fallen oil sludge and pyrolysis slag. The steps are as follows: Fallen oil sludge and / or pyrolysis slag, fly ash, and bentonite powders are metered according to a specified ratio and then sequentially fed into two twin-shaft mixers connected in series for mixing and staged water addition. The raw ceramsite exiting the twin-shaft mixers is extruded and granulated, then shaped to obtain ceramsite pellets. The ceramsite pellets are first indirectly dried in a rotary indirect dryer to a moisture content of 12-17%, then dried in a belt dryer to a moisture content ≤4%, and finally calcined at high temperature in a rotary kiln. After cooling in a grate cooler, they are screened and stored, yielding the oil sludge ceramsite product. This invention utilizes a combined process technology of a kiln tail heat recovery system, a kiln head heat recovery system, a calcination system, and a flue gas treatment system to solve the drying safety issues, flue gas treatment, and emission problems caused by volatile petroleum hydrocarbon components in the ceramsite pellets, thereby improving system thermal efficiency and reducing system energy consumption.

The invention relates to the technical field of adsorption materials, in particular to a method for preparing a high-water-absorption adsorption material and mineral composite modified sludge gasification slag. The method comprises the following steps: S1, crushing and grinding the sludge gasification slag to obtain gasification slag powder; the preparation method comprises the following steps: crushing and grinding bentonite raw ore to obtain bentonite powder; s2, physically mixing the bentonite powder obtained in the step S1 with gasified slag powder, and uniformly stirring in mixing equipment to obtain a mixed dry material; s3, sodium carbonate serving as a sodium modifying agent is added into the mixed dry material obtained in the step S2, a kneading reaction is performed through a kneading machine, and a proper amount of water is sprayed in the kneading process to promote the sodium modifying reaction; and S4, gradually heating and drying the sodium modified product obtained in the step S3 to constant weight, and crushing, grinding and sieving the obtained dried material to obtain the high-water-absorption composite adsorption material. The mineral composite modified sludge gasification slag adsorbing material prepared by the invention shows extremely high water absorption rate.

This application provides a composite bentonite and its preparation method. The preparation method includes: providing a mixed solution comprising bentonite powder, an organic cationic modifier, and water; reacting the mixed solution at a temperature of 60-80°C to obtain a suspension containing modified bentonite; drying the suspension containing modified bentonite to obtain modified bentonite, wherein the water content of the modified bentonite is less than 1.5%; pulverizing the modified bentonite to obtain organic cationic modified bentonite powder; mixing the organic cationic modified bentonite powder with an amino acid salt modifier and performing dry modification to obtain composite modified bentonite. The preparation method of this application produces a composite modified bentonite with good moisturizing properties and the ability to absorb oil, giving the composite modified bentonite the characteristics of oil control without drying.

The application discloses a kind of bentonite-based control materials of rapid prototyping and preparation method, including the following raw materials are made: bentonite, fly ash, blast furnace slag and excitation agent, wherein, the mass ratio of bentonite and fly ash is 1:0.2-0.4, based on the total mass of bentonite and fly ash, the addition amount of blast furnace slag is 10-20%, and the addition amount of excitation agent is 13.33-16.69%.After water glass and sodium hydroxide are dissolved in water, the excitation agent is prepared by adding modifier, the excitation agent is added to the dry powder sample mixed with fly ash and blast furnace slag, stirring, stuffing, adding bentonite and stirring into shape.The application uses water glass, phosphate and the like as excitation agent, uses industrial solid waste as supplementary admixture for required calcium, silicon, aluminum and other elements, the obtained control material has good compressive strength, good chemical compatibility, can realize rapid control function, and the penetration performance is two orders of magnitude lower than the national standard requirement after maintenance for 7d.

The utility model discloses double-helix activated clay mixing equipment which comprises a machine body, a feeding cavity and a mixing cavity are formed in the machine body, the feeding cavity is located right above one end of the mixing cavity and communicated with the mixing cavity, a powder inlet and a water inlet are formed in the feeding cavity, and a slurry outlet is formed in the other end of the mixing cavity; the stirring assembly is used for pushing the bentonite powder, and the stirring assembly is located in the feeding cavity; the material mixing assembly is used for mixing water and bentonite powder, and the material mixing assembly is located in the material mixing cavity; wherein the mixing assembly comprises two screw rod units used for conveying and stirring a mixture of water and bentonite powder, and a driving mechanism used for driving the two screw rod units to synchronously and reversely rotate relative to the machine body is arranged on the machine body. According to the utility model, the mixing uniformity between water and bentonite powder can be improved, the quality of slurry formed by mixing is guaranteed, and the subsequent production of activated clay is facilitated.

The application discloses a preparation method of modified dolomite powder and belongs to the technical field of dolomite modification treatment. The modified dolomite powder is prepared from the following raw materials in weight: 70-90 parts of dolomite powder, 1-5 parts of white hydrogen bentonite powder, 10-30 parts of nano-carbonate and a dispersing agent, wherein the weight of the dispersing agent is 0.1-0.3 percent of the weight of the nano-carbonate. The preparation method of the modified dolomite powder provided by the application can make the weak-acid dolomite powder dispersion liquid and the weak-alkali nano-carbonate dispersion liquid mix, and then make the dolomite powder particles and the nano-carbonate particles assemble and agglomerate through electrostatic mutual attraction, thereby improving the loading capacity and loading area of the nano-carbonate particles on the surface of the dolomite powder particles, and making the nano-carbonate particles uniformly and stably coated on the surface of the dolomite powder particles to form composite particles.

The antibacterial far infrared negative ion non-woven fabric is obtained by padding a primary non-woven fabric with a porous structure in modified slurry, spraying an antibacterial solution and drying, during padding treatment, the primary non-woven fabric is introduced into a dipping tank, is fully dipped in the modified slurry in the dipping tank and then is rolled to be dry, the liquid carrying rate of the primary non-woven fabric is controlled to be 12-18%, and then an antibacterial solution is sprayed; wherein the modified slurry is prepared from the following raw materials: a water-soluble polyurethane solution, modified bamboo charcoal powder, medical stone powder, illite powder, chitosan, organic bentonite powder, polyamide wax, polyethylene glycol ether and a penetrating agent. And an excellent antibacterial effect can be achieved.

The invention belongs to the field of fertilizers, and particularly relates to a humic acid activated synergistic fertilizer as well as a preparation method and application thereof. Urea is used as a core fertilizer, sodium carboxymethyl cellulose-bentonite micro powder is used as a coating carrier, activated humic acid, potassium humate and polyaspartic acid are combined to form a microporous coating layer, and the humic acid activated synergistic fertilizer is obtained. Humic acid is activated through xylanase and laccase, so that carboxyl and phenolic hydroxyl are exposed, the film-forming property is enhanced, and the humic acid is complexed with urea to reduce nutrient loss; sodium carboxymethyl cellulose and bentonite construct a cross-linked network through hydrogen bonds and Van der Waals force, the coating layer is endowed with good mechanical properties and environmental compatibility, and the coating layer realizes nutrient controlled release through micropore diffusion and a humidity response swelling mechanism. Potassium humate stabilizes rhizosphere pH through functional group proton buffering, polyaspartic acid regulates and controls soil water-retaining property and swelling behavior through carboxyl hydration, dynamic matching of moisture and nutrient release is achieved, and utilization of fertilizer nutrients is improved.

The application discloses a kind of automatic grinding device for bentonite crushing processing, it is related to bentonite processing technical field.The present application includes bottom plate, the top of the bottom plate is fixed with machine shell by support, the top of the bottom plate is fixed with grinding tank, the inner wall top of the grinding tank is rotatably installed with driving shaft, the inside of the machine shell is provided with crushing roller group, the bottom of the machine shell is provided with spiral feeding assembly, the discharge end of the spiral feeding assembly is fixed at the outer wall of grinding tank, the driving shaft is driven by motor, the lower outer wall of the driving shaft is fixed with grinding roller, the machine shell and grinding tank are provided with screening device.The setting of the screening device makes several cylinders and several J-shaped plates screen bentonite raw materials, through screening, it ensures that the bentonite entering the grinding tank is relatively uniform in size, and avoids large-particle bentonite raw materials from entering the grinding link, which can improve the efficiency of grinding operation.

The invention relates to the technical field of heavy metal contaminated soil remediation, in particular to a method for remedying livestock and poultry manure heavy metal contaminated soil, according to the method, soil to be remediated is deeply ploughed before a composite passivator is applied, the depth is set, the composite passivator is applied, watering is performed after uniform mixing, and soybeans are sown after standing; the sowing depth of the soybeans is 1.5 cm, and the soil humidity is kept to be 60% of the field moisture capacity in the cultivation period. The composite passivator is composed of calcium magnesium phosphate fertilizer, biochar and bentonite, the preferable ratio is 1: 1: 1.2, and the bentonite is crushed and sieved by a 100-mesh sieve. Heavy metals such as copper and zinc in soil can be effectively passivated, the soil fertility is improved, soybean growth is promoted, secondary pollution is avoided, operation is easy and convenient, cost is low, and the method is suitable for large-area farmland remediation.

The invention relates to the technical field of dust removal filters, in particular to a dust removal filter for bentonite processing, which comprises a shell, a plurality of groups of filter bags arranged in parallel in the shell, a pulse dust removal system for removing dust on the surfaces of the filter bags, and an upper group of mounting plates and a lower group of mounting plates arranged in parallel in the shell, openings in the upper end and the lower end of each group of filter bags are respectively and fixedly mounted on two groups of mounting plates, and flexible sealing sheets for improving the sealing performance are arranged on the side walls of the mounting plates; after the mounting plates move to close positions, the driving device drives the upper mounting plate, the lower mounting plate and the filter bag to integrally rotate by 180 degrees, the pulse dust cleaning system is started to alternately perform strong blowing on two ends of the filter bag, a hardened layer is pre-crushed when the filter bag is bent and deformed, and pulse airflow can more effectively blow off dust from the inner wall of the filter bag, so that the dust removal efficiency is improved. The dust removal efficiency and thoroughness are greatly improved, and the dust removal device is particularly suitable for bentonite dust which is prone to hardening.

The present application relates to dust filter technical field, specifically propose a kind of bentonite processing dust filter, including shell, multiple groups of parallelly arranged filter bag being arranged in shell and for removing dust on the surface of filter bag pulse dust cleaning system, each group of filter bag is provided with multiple, also include two groups of parallelly arranged mounting plate in shell, the upper and lower end openings of each group of filter bag are respectively fixedly installed on two groups of mounting plate, the side wall of mounting plate is equipped with flexible sealing sheet for improving sealing property;The present application is moved to close position after mounting plate, drive device drives upper and lower mounting plate together with filter bag whole rotation 180 degrees, pulse dust cleaning system starts after alternately to the two ends of filter bag strong jet, hardening layer has been pre-crushed when filter bag bending deformation, pulse airflow can more effectively blow off dust from filter bag inner wall, dust is finally discharged, greatly improve dust cleaning efficiency and completeness, especially suitable for easy hardening bentonite dust.

The application relates to the technical field of corrosion prevention of carbon-carbon materials, and specifically discloses a ceramic slurry, a coating for improving the corrosion resistance of carbon-carbon composite materials and a preparation method of the coating. The ceramic slurry comprises the following raw materials in parts by weight: 45-60 parts of kaolin powder, 35-50 parts of bentonite powder, 8-15 parts of silicon carbide powder, 10-30 parts of hafnium carbide composite powder, 260-400 parts of a solvent and 0.4-0.6 parts of a sintering aid; the hafnium carbide composite powder is prepared by sintering raw materials including hafnium carbide powder, zirconium powder and silicon carbide whiskers; the ceramic slurry is obtained by mixing the raw materials; and the ceramic coating is formed on the surface of the carbon-carbon composite material after the ceramic slurry is impregnated on the surface of the carbon-carbon composite material, solvent removal and sintering. The ceramic coating has a compact structure, good fracture toughness and good resistance to silicon vapor corrosion.

FIELD: oil industry; gas industry.SUBSTANCE: environmentally friendly drilling fluid contains, mas.%: viscosity reducer - hydroxyethylidene diphosphonic acid (HEDP) 0.1-0.49; fluid loss reducer - acrylic polymer “Гивпан” 0.34-0.81; bentonite powder “ПБМВ” 7-10; structure formation regulator - sodium chloride NaCl from more than 0 to 0.29; water - the remainder and is a clay suspension mixed first for 40 minutes at 600 rpm, and then twice more for 30 minutes at 600 rpm: once after adding Givpan and NaCl, and a second time after adding HEDP.EFFECT: expansion of technological capabilities of the drilling fluid, increasing the thermal stability of the drilling fluid, environmental friendliness, possibility of drilling oil and gas wells in areas with vulnerable soil-covering vegetation and in sea areas.1 cl, 1 tbl, 12 ex

The invention belongs to the technical field of cat litter production, and particularly relates to environment-friendly degradable cat litter and a preparation method thereof.The cat litter is prepared from, by weight, 30-60 parts of base material, 5-15 parts of modifier, 3-10 parts of binder, 2-8 parts of functional additive and 10-20 parts of water; the base material is agricultural waste which is crushed to 80-120 meshes and dried until the water content is less than or equal to 8%; the modifier is formed by mixing 300-500 meshes of bentonite powder and diatomite according to the mass ratio of 2: 1; the binder is a natural polysaccharide substance; the functional additive comprises an antibacterial agent, a deodorant and a pH regulator, and the pH regulator is used for regulating the pH of the system to 6.0-7.0.

This invention relates to a flame retardant modifier and its preparation method. The flame retardant modifier comprises bentonite, fly ash, desulfurized gypsum, sodium polyacrylate, water glass, diatomaceous earth, zinc borate, and deionized water. The components are proportioned by weight as follows: bentonite 40-55 parts, fly ash 20-25 parts, desulfurized gypsum 10-12 parts, sodium polyacrylate 5-7 parts, water glass 3-4 parts, diatomaceous earth 5-10 parts, zinc borate 3-5 parts, and deionized water 70-140 parts. This invention exhibits highly efficient flame retardant properties. Through the synergistic effect of oxygen adsorption by diatomaceous earth and high-temperature charring by zinc borate, the auto-ignition initiation temperature is increased to over 380°C, and the flame retardant efficiency is improved by 40% compared to traditional technologies.

The present invention discloses a silica gel desiccant tablet and a process of preparation of the silica gel desiccant tablet. The silica gel desiccant tablet includes 60 to 65% of silica gel powder having a particle size between 200 to 400 mesh; 25 to 30% of powdered bentonite clay; 1.5 to 2% of magnesium stearate; 5 to 10% of water-soluble polymer; and 200 ml distilled water. The tablets have a diameter of 9 mm, 11 mm, 12 mm and 16 mm; and a height of 5 mm. The tablets are obtained in a mechanically stable form without compromising the moisture adsorption performance. The silica gel desiccant tablets show maximum moisture adsorption capacity of 22.8% at 25° C. and 80% relative humidity after 24 hours of exposure in confined volume.