76 results about "Bentonite powder" patented technology

The invention discloses a rapidly-formed bentonite-based blocking and controlling material and a preparation method thereof, the rapidly-formed bentonite-based blocking and controlling material is prepared from the following raw materials: bentonite, fly ash, blast furnace slag and an exciting agent, the mass ratio of the bentonite to the fly ash is 1: 0.2-0.4, based on the total mass of the bentonite and the fly ash, the adding amount of the blast furnace slag is 10-20%, the adding amount of the exciting agent is 10-20%, and the adding amount of the exciting agent is 10-20%. And the addition amount of the exciting agent is 13.33 to 16.69 percent. The preparation method comprises the following steps: dissolving water glass and sodium hydroxide in water, adding a modifier to prepare an exciting agent, adding the exciting agent into a dry powder sample formed by mixing fly ash and blast furnace slag, stirring, covering, adding bentonite, and stirring for forming. The water glass, the phosphate and the like are used as exciting agents, the industrial solid waste is used as an admixture for supplementing required elements such as calcium, silicon and aluminum, the obtained blocking and controlling material is good in compressive strength and chemical compatibility, the rapid blocking and controlling function can be achieved, and the permeability of the blocking and controlling material after 7 days of maintenance is two orders of magnitude lower than that required by the national standard.

The invention discloses a preparation method and application of a carrier molding and supported catalyst. The preparation method comprises the following steps: selecting proper natural calcium bentonite, carrying out acid treatment modification on the natural calcium bentonite, washing, drying and crushing to obtain modified bentonite powder with high purity and proper particle size distribution; adding manganese oxide and copper oxide into the powder, carrying out compression molding together with a binder, and roasting to obtain the carrier. The catalyst prepared by loading the active component on the surface of the carrier can be used in the oxyacylation reaction of ethylene and propylene, and has excellent selectivity and long service life.

The invention discloses an acid-soluble cement slurry plugging agent for an oil well and a preparation method thereof, and belongs to the technical field of plugging agents. The acid-soluble cement paste plugging agent for the oil well comprises the following components in parts by weight: 55-80 parts of G-grade oil well cement, 5-30 parts of calcium carbonate powder, 5-25 parts of lime powder, 5-15 parts of bentonite powder, 5-10 parts of modified acid-soluble gel, 5-10 parts of modified tricalcium phosphate, 5-10 parts of a filtrate reducer and 1-5 parts of a coagulant. The preparation method of the acid-soluble cement slurry plugging agent for the oil well comprises the step of mixing G-grade oil well cement, bentonite powder, lime powder, calcium carbonate powder, modified acid-soluble gel, modified tricalcium phosphate, a filtrate reducer and a coagulant in two steps to obtain the acid-soluble cement slurry plugging agent for the oil well. The compressive strength and the acid-soluble effect of the acid-soluble cement paste plugging agent for the oil well are remarkably improved.

The invention belongs to the field of coatings, and relates to a weather-resistant bi-component antiskid coating and a preparation method thereof. The invention relates to a weather-resistant double-component anti-skid coating, which consists of a component A and a component B in a mass ratio of 6: 1, the component A is prepared from the following raw materials in percentage by weight: 35 to 45 percent of acrylic acid base resin, 0.2 to 0.5 percent of controlled flocculation type wetting dispersant, 1 to 3 percent of bentonite, 1 to 3 percent of powdery rheological additive polyamide wax, 22 to 26 percent of rutile titanium dioxide, 10 to 12 percent of 1250 kaolin, 8 to 12 percent of 40 to 80-mesh quartz sand and 0.2 to 0.4 percent of NX-3830S strong defoaming agent; the coating is prepared from the following raw materials in percentage by weight: 1%-3% of epoxy resin, 0.2%-0.4% of Hamming chemical EFKA-3777 leveling agent, 0.1%-0.3% of liquid rheological additive BYK-410, 1%-3% of slow drying solvent PMA and 8%-12% of According to the weather-resistant two-component anti-skid coating and the preparation method thereof, after an anti-skid material is added into the prepared coating, the original paint viscosity is high, the storage anti-settling property is good, and the construction anti-settling property is good.

The invention relates to an environment-friendly waterproof coating and a preparation method thereof, and belongs to the technical field of water-based coatings. The environment-friendly waterproof coating is prepared by taking isophorone diisocyanate, polyether polyol, a catalyst, superfine calcium carbonate, bentonite, a coalescing agent and a self-made composite functional agent as raw materials, and is prepared by the following steps: firstly, dissolving isophorone diisocyanate, polyether polyol and the catalyst in an environment-friendly solvent, and stirring for reaction to prepare a polyurethane solution; crushing bentonite, dissolving the crushed bentonite, superfine calcium carbonate and a self-made composite functional agent in an environment-friendly solvent, and stirring and mixing at a high speed to prepare composite slurry; and finally, adding a coalescing agent and a polyurethane solution into the composite slurry, and stirring and mixing to prepare the environment-friendly waterproof coating. The solvent used in the preparation method is safe and environment-friendly, and the prepared environment-friendly waterproof coating is non-toxic, free of peculiar smell, bright in color and luster, good in wear resistance, good in waterproof performance and not prone to being corroded by acid and alkali.

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 invention relates to the technical field of bentonite materials, and discloses application and a preparation method of diversified agricultural bentonite, and the preparation method comprises the following steps: 1) sodium bentonite; 2) preparing primary bentonite; 3) activating bentonite powder; 4) a mixture; 5) preparing turbid liquid; and 6) dissolving chitosan in an acetic acid solution with the volume percent concentration of 4-6%, fully dissolving the chitosan, adding the turbid liquid into the acetic acid solution, carrying out ultrasonic treatment for 60-90 minutes, carrying out constant-temperature reaction for 1-2 hours, and drying to obtain the diversified agricultural bentonite. The diverse agricultural bentonite prepared by the invention is applicable to a plurality of fields of agriculture, and can be applied to soil conditioners, fertilizer conditioners, fertilizer carriers, fertilizer granulation and microbial agents.

The invention relates to the field of biodegradable high polymer materials, and discloses a bio-based packaging material with an anti-oxidation effect and a preparation method of the bio-based packaging material. 40 to 60 parts of polyhydroxyalkanoate; 10-20 parts of a composite antioxidant filler; the composite antioxidant filler is prepared by the following steps: (a) crushing sodium bentonite until the specific surface area is 45-55 m < 2 > / g and the particle size distribution D90 is less than or equal to 10 microns; (b) mixing bentonite powder and water according to the ratio of 1kg: 5L to form dispersion liquid with the solid content of 18%, and adding 0.3% sodium hexametaphosphate dispersing agent; (c) adding cerium nitrate; and (d) heating the product to 1050 DEG C at a speed of 8 DEG C / min, and calcining for 2 hours. Through the intercalation structure of the bentonite-based composite filler, an inorganic antioxidant component is organically combined with a bio-based polymer matrix, so that a breakthrough in long-acting oxidation resistance is realized in a completely biodegradable polylactic acid / polyhydroxyalkanoate system, and the technical bottleneck that traditional bioplastics are easy to oxidize and degrade is solved; and a sustainable solution is provided for green packaging materials.

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 discloses a preparation method of a negative carbon modified clay-based salt-tolerant anti-seepage material, which comprises the following steps: grinding natural bentonite, washing with water to remove coarse particles, adding into a NaCl solution for sodium treatment, washing, and drying to obtain sodium bentonite powder; dispersing the obtained sodium bentonite powder in deionized water, carrying out shearing dispersion to realize lamella stripping, and carrying out centrifugal treatment to remove undispersed large particles so as to obtain highly dispersed nanosheet liquid; dissolving organic amine in the nanosheet liquid, adjusting the pH value to 8.5-9.0, heating to 60-80 DEG C, carrying out intercalation reaction for 4-24 hours, washing, and drying to obtain organic amine modified bentonite; the organic amine modified bentonite is mixed with water to obtain wet soil, the wet soil is placed in a fixed bed adsorber, CO2 gas is introduced, and the organic amine modified bentonite fully adsorbs CO2; and carrying out compression molding on the modified bentonite after adsorbing CO2 according to a set compaction degree to obtain the negative carbon modified clay-based salt-tolerant anti-seepage material.

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 present invention relates to the technical field of sludge treatment, and specifically relates to a method for reducing resistance genes in activated sludge, comprising the following steps: S1. Loading ferrate on bentonite: obtaining bentonite powder loaded with ferrate; S2. Modifying bentonite: obtaining nickel-modified bentonite; S3. Pretreating sludge: mixing the sludge with calcium hypochlorite; S4. Deep-treating sludge: adding nickel-modified bentonite to the pretreated sludge. The present invention forms a synergistic purification system of ferrate-nickel-calcium hypochlorite. Among them, ferrate has been proven to have a good effect on reducing RAGs, and attaching to bentonite with a high specific surface area can further improve its effect. The nickel-modified bentonite has a significant inhibitory effect on the activity of the microbial community, especially when the sludge is pretreated with calcium hypochlorite, this effect is more obvious, and finally the removal rate of RAGs can reach a relatively high level.

The present invention relates to the technical field of concrete, and specifically discloses a high-toughness concrete decorative brick, its preparation method and application, which include the following components in parts by weight: 500-600 parts of cement, 120-150 parts of nano-clay, 80-100 parts of modified fiber-reinforced polypropylene, 1000-1200 parts of aggregate, 3-5 parts of water reducer, and 100-200 parts of water; wherein, the fibers used in the modified fiber-reinforced polypropylene are glass fiber and carbon fiber; the polypropylene used in the modified fiber-reinforced polypropylene is maleic anhydride grafted polypropylene, and potassium feldspar powder is added to the maleic anhydride grafted polypropylene. Among them, the nano-clay is a mixture of bentonite powder and potassium feldspar powder. The high-toughness concrete decorative brick of the present invention has both high tensile strength and fracture toughness, and is particularly suitable for preparing decorative walls and floors.

This invention relates to the field of bentonite adsorbent material preparation technology, and discloses a composite modified bentonite adsorbent material and its preparation process, including the following steps: S1: Coarsely crush the raw bentonite ore into granules, then finely grind it and pass it through a 200-mesh sieve, collecting the bentonite powder that passes through the sieve; S2: Add the bentonite powder and hydrochloric acid to a reaction vessel and stir to react; S3: After the acidified bentonite slurry is filtered by pressure, it is washed with deionized water until the pH of the filtrate is 6.5-7.0, and then the filter cake is dried to obtain a pre-dried acidified bentonite filter cake; S4: The pre-dried filter cake is passed through a rotary kiln, and microwave heating is set in the rotary kiln to finally obtain thermally activated bentonite; S5: The thermally activated bentonite is mixed with CTAB at 70°C. The preparation process of this composite modified bentonite adsorbent material significantly improves the comprehensive adsorption performance of bentonite through the synergistic effect of acidification, microwave activation and organic intercalation. Microwave activation quickly removes interlayer water and stabilizes the framework structure, avoiding the risk of thermal collapse.

This invention discloses a method for preparing a carbon-modified clay-based salt-resistant and seepage-proof material. Natural bentonite is ground, washed with water to remove coarse particles, and then subjected to sodium treatment in NaCl solution. After washing and drying, sodium-based bentonite powder is obtained. The obtained sodium-based bentonite powder is dispersed in deionized water, sheared to achieve layer exfoliation, and centrifuged to remove undispersed large particles, resulting in a highly dispersed nanosheet liquid. An organic amine is dissolved in the nanosheet liquid, the pH is adjusted to 8.5-9.0, and the mixture is heated to 60-80℃ for intercalation reaction for 4-24 hours. After washing and drying, organic amine-modified bentonite is obtained. The organic amine-modified bentonite is mixed with water to obtain wet soil, which is placed in a fixed-bed adsorber and CO2 gas is introduced to allow the organic amine-modified bentonite to fully adsorb CO2. The modified bentonite after CO2 adsorption is pressed into shape according to a set compaction degree to obtain the carbon-modified clay-based salt-resistant and seepage-proof material.

The invention relates to the technical field of permeable bricks, and discloses a sludge-based pressure-resistant permeable brick and a preparation method thereof. The brick comprises the following components: steel slag, sludge, potassium feldspar, calcined modified bentonite, fly ash and perlite powder; the weight ratio of the sludge to the calcined modified bentonite is 20:1; the calcined modified bentonite is prepared by modifying calcium-based bentonite as a raw material. The permeable brick prepared by using steel slag and sludge as raw materials not only has excellent water permeability, but also has excellent pressure resistance. The brick is applied to urban roadside paving and can withstand greater pressure. At the same time, the brick can timely penetrate rainwater on the roadside, so that the city is free from the trouble of waterlogging.

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 relates to the technical field of bentonite adsorption material preparation, and discloses a composite modified bentonite adsorption material and a preparation process thereof, the preparation process comprises the following steps: S1, coarsely crushing bentonite raw ore into particles, then finely grinding, sieving with a 200-mesh sieve, and collecting undersize bentonite powder; s2, adding bentonite powder and hydrochloric acid into a reaction kettle, and carrying out a stirring reaction; s3, carrying out filter pressing on the acidified bentonite slurry, washing the acidified bentonite slurry with deionized water until the pH value of filtrate is 6.5-7.0, and then drying a filter cake to obtain a pre-dried acidified bentonite filter cake; s4, the pre-dried filter cake passes through a rotary kiln, microwave heating is arranged in the rotary kiln, and finally heat activated bentonite is obtained; and S5, mixing the thermally activated bentonite with CTAB at 70 DEG C. According to the preparation process of the composite modified bentonite adsorption material, through the synergistic effect of acidification, microwave activation and organic intercalation, the comprehensive adsorption performance of bentonite is remarkably improved, interlayer water is rapidly removed through microwave activation, a skeleton structure is stabilized, and the risk of thermal collapse is avoided.

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.

A method of hydrolyzing a borohydride includes extracting nanocellulose from date palm waste and forming nanocellulose crystals. The method includes dispersing the NCC and bentonite powder in water, followed by adding a cross-linking acid solution and heating to form a nanocellulose catalyst in the form of a hydrogel. The method includes reacting a borohydride with water in the presence of the nanocellulose catalyst at a temperature ranging from 20 to 45° C. to produce hydrogen (H2) gas.

The invention relates to the technical field of smashing and dust removing devices, and provides an organobentonite smashing and dust removing device which comprises a material collecting box, a dust blocking half cover, a movable positioning assembly, a dust blocking circular plate and a bag fixing ring, the material collecting box is located below a smashing machine, a circular feeding opening is formed in the top end of the material collecting box, and universal wheels are installed at the bottom end of the material collecting box; the two dust blocking half covers are slidably installed at the top end of the material collecting box through the synchronous moving assemblies, the moving positioning assemblies are arranged on the side faces of the material collecting box and the crusher, the dust blocking circular plate is arranged at the top end of the material collecting box through the rotating assembly, and the bag fixing ring is arranged on the rotating assembly. According to the organic bentonite smashing and dust removing device, by means of the material collecting box, the dust blocking half cover, the movable positioning assembly, a dust blocking circular plate and a bag fixing ring, the problem that in the prior art, when smashed organic bentonite fine powder is collected, some dust is generated when the fine powder falls down, and the dust is prone to falling off is solved. And therefore, the device is easily adsorbed into the body by a worker.

The invention discloses a reverse osmosis concentrated water treatment agent and a preparation method thereof, and belongs to the technical field of sewage treatment.The reverse osmosis concentrated water treatment agent is characterized in that bentonite powder is subjected to alkali washing and acid washing, carboxyl on the surface, boric acid groups of phenylboronic acid and hydroxyl of 2, 5-hydroxyterephthalic acid are subjected to an esterification reaction, then the reaction product and titanium tetrachloride are subjected to a hydrothermal reaction, and titanium-based MOF is generated in situ; after being treated by gamma-methacryloxypropyltrimethoxysilane, the activated bentonite is copolymerized with zinc acrylate and N-isopropylacrylamide to form a hydrogel membrane, boron and zinc are introduced, and the adsorption and ion exchange capacity of the treatment agent can be remarkably improved through the high specific surface area of the hydrogel membrane and activated bentonite and the porosity of a titanium base; the adsorption effect on manganese ions and calcium ions is improved; in the self-synthesis process of the titanium-based MOF, part of boron of phenylboronic acid enters crystal lattices of the titanium-based MOF to replace titanium ions, so that a band gap is narrowed, the visible light absorption range is widened, and the photocatalytic activity is improved.

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.

The invention provides a composition. The composition comprises Ca (OH) 2, CaCO3 and free carbon in a mass ratio of (32-45): (5-10): (9-15). The invention also provides a composition, a ceramsite composition, ceramsite and a preparation method thereof. According to the invention, Ca (OH) 2, CaCO3 and free carbon in a mass ratio of 32-45: 5-10: 9-15 are used as gas-forming substances, bentonite, fly ash and red mud are matched to prepare the ceramsite, the gas-forming substances have a good gas-forming effect, the density of the obtained ceramsite can be improved and reduced and the strength of the ceramsite can be improved under the condition that the use amount is relatively low, for example, the stacking density of the ceramsite is 400kg / m < 3 >-600kg / m < 3 >, the water absorption rate is 3-12%, and the cylinder compressive strength is 3.0-6.0 MPa.

The invention discloses a low-grade calcium bentonite-based drying agent and a preparation method thereof. The preparation method comprises the following steps: pretreating raw materials: finely crushing calcium bentonite raw ore into calcium bentonite powder; semi-dry sodium modification: finely crushed calcium bentonite powder and a sodium carbonate solution are mixed in proportion; feeding the mixed material into a twin-screw extruder for continuous extrusion forming to form a strip-shaped material; and drying and post-processing: drying the strip-shaped material, crushing the strip-shaped material into particles, and screening to obtain the low-grade calcium bentonite-based drying agent product. And moisture absorption rate evaluation: putting the low-grade calcium bentonite-based drying agent product into a standard constant-temperature and constant-humidity curing box for standing, measuring the weight of bentonite before and after moisture absorption, and calculating the moisture absorption rate. The process is high in integration level and simple in flow, and the production period is shortened by more than 40%; after the low-grade calcium bentonite is extruded and sodium-modified by a semi-dry method, the moisture absorption rate of the product in an RH 80% environment can exceed 50%; and the green manufacturing trend is met, no waste water is generated, and low-carbon emission is achieved.

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.

The invention relates to the field of non-metallic mineral materials, in particular to a purification method for improving the purity of bentonite. Raw ore is subjected to crushing pretreatment, so that the particle size of the raw ore can pass through a 200-mesh screen, and sufficient subsequent reaction is ensured. Then, the crushed bentonite powder and deionized water are fully mixed according to the solid-to-liquid ratio of 1: 8, and uniform and stable initial slurry is formed; and on the basis of the slurry, sequentially executing a core purification step, ultrasonic and chemical impurity removal, stepped sedimentation, low-temperature gradient centrifugation, targeted iron removal and dehydration drying to obtain a high-purity and high-whiteness bentonite concentrate product. Compared with a traditional process, the method designed by the invention has the advantages that the purification period is greatly shortened, the total amount of the required dispersing agent is remarkably reduced, nanoscale impurities are efficiently removed, particularly, iron impurities which are difficult to treat also have an excellent removal effect, equipment required by the whole process flow is high in universality, a special device is not needed, and the method is suitable for industrial production. And the comprehensive production cost is effectively reduced.