14 results about "Activated attapulgite" patented technology

The invention relates to the technical field of attapulgite, and provides ultrasonic-thermal activated attapulgite applied to organic wastewater and a preparation method thereof, the preparation method comprises the following steps: pretreating attapulgite raw ore, mixing the pretreated attapulgite raw ore with water, carrying out ultrasonic activation, filtering, calcining, carrying out thermal activation, and optionally carrying out acidizing treatment; according to the method, through the synergistic effect of ultrasonic cavitation and heat treatment, fiber bundles of attapulgite are effectively stripped, impurities are removed, and a developed hierarchical pore structure and surface acid sites are formed; the obtained activated attapulgite has excellent adsorption performance on organic pollutants, and is especially suitable for treating complex wastewater containing aromatic organic matters and cationic dyes at the same time; when the adsorbent is applied, the adsorbent is added into wastewater, synchronous and efficient removal of pollutants can be realized after stirring adsorption is performed under proper conditions, and the saturated adsorbent can be regenerated and reused through high-temperature calcination. The method is simple in process, low in cost, high in adsorption efficiency and environment-friendly.

The application discloses a self-forming A-type molecular sieve foam material taking attapulgite as raw material and a preparation method and application thereof, and belongs to the field of green synthesis of molecular sieve foam materials. The steps are as follows: 1) grinding and sieving attapulgite to obtain attapulgite powder, and then calcining the attapulgite powder at 950-1000 DEG C for 2-4 hours to prepare activated attapulgite powder as a solid-phase raw material; 2) mixing the solid-phase raw material with an alkaline activator according to a mass ratio of 0.82-1.13:1, fully stirring and uniformly mixing, adding a seed crystal inducer, then adding a foaming agent, uniformly stirring, pouring into a mold, sealing, crystallizing, and obtaining the self-forming A-type molecular sieve foam material. The application only uses natural mineral attapulgite, does not add any chemical reagent as a silicon-aluminum source, obtains the self-forming A-type molecular sieve foam without a binder, and can effectively avoid problems such as pore blockage, dilution of effective molecular sieve sites and limitation of guest molecule transmission when used as an adsorbent.

The invention discloses melatonin-chitosan-attapulgite composite gel beads and a preparation method thereof. The preparation method comprises the following steps: S1, treating attapulgite with organic acid to obtain activated attapulgite; s2, dispersing the activated attapulgite into the chitosan acid sol; s3, adding melatonin into the dispersed sol, and mixing in a dark place to obtain colloid; and S4, dropwise adding the colloid into a cross-linking agent, and standing to form gel beads. According to the melatonin-chitosan-attapulgite composite gel bead, the melatonin-chitosan-attapulgite composite gel bead is constructed, the water retention performance of the composite gel bead is excellent, chitosan and attapulgite synergistically improve the water absorption and holding capacity, soil moisture loss is reduced, the water saving effect is remarkable, and the melatonin-chitosan-attapulgite composite gel bead is suitable for agricultural production in water-deficient areas. The composite carrier can slowly release melatonin, prolong the action period of melatonin, regulate and control crop physiology, enhance stress resistance and achieve the dual effects of moisture guarantee and stress resistance regulation and control.

The invention relates to the technical field of attapulgite, and provides a preparation method of acid-ultrasonic synergistically activated attapulgite and application of the acid-ultrasonic synergistically activated attapulgite in dye wastewater treatment, the preparation method of the acid-ultrasonic synergistically activated attapulgite comprises the following steps: S1, pretreatment: purifying attapulgite less than or equal to 2mm, and drying at 105 DEG C after purification; s2, a sulfuric acid solution with the concentration of 1-2 mol / L is prepared and mixed according to the solid-to-liquid ratio of 1: 8-1: 10, and ultrasonic treatment is carried out for 120-160 min under the conditions of 40-60 kHz and 120-150 W / L at the temperature of 40-60 DEG C; s3, filtering and washing until the pH value is 3-5; and S4, drying at 110 DEG C, and calcining at 200-400 DEG C for 1-2 hours.

The invention relates to the technical field of preparation of wall thermal insulation materials, and particularly discloses a wall thermal insulation material and a preparation method thereof. 5-8 parts of silicon dioxide sol; 6 to 10 parts of aerogel microspheres; 6-10 parts of a phase change microcapsule; 12 to 15 parts of expanded perlite or light expanded aggregate; 12-15 parts of active fly ash or high-activity slag; 6-10 parts of Portland cement; 0.4 to 0.8 part of polypropylene chopped fiber; 0.5 to 0.8 part of a silane coupling agent; 0.6-1 part of a closed pore nucleating agent and a template; 0.3 to 0.5 part of a multifunctional water reducing agent; the excitation liquid and the water are used for excitation and forming, and the ratio of the excitation liquid to the activated attapulgite is 1: (0.18-0.22); the micro / nano-scale aerogel skeleton, the closed-pore multi-scale porous structure and the phase-change microcapsule are organically coupled to form a collaborative network of multiple heat-resistant mechanisms, so that the heat-resistant phase-change microcapsule plays a role in two aspects of steady-state heat transfer and transient thermal shock at the same time.

This invention relates to the field of homogenizing agent preparation technology, and discloses a composite VOCs concentration homogenizing agent and its preparation method. The homogenizing agent is mainly composed of powdered activated carbon, steam-activated attapulgite clay, and modified diatomaceous earth, combined with a compound molecular sieve, lubricant, and binder. First, the attapulgite clay is activated at high temperature with saturated steam to obtain modified clay. Then, the diatomaceous earth is modified with phosphonic acid and rapidly composited with nano-ZrO2 and mesoporous silica to obtain modified diatomaceous earth. Subsequently, the powder components are dry-mixed uniformly, water is added to form a mold, and then the product is obtained through step drying and heat preservation curing. This invention constructs an adsorption-slow-release synergistic multi-level porous structure through steam activation to open pores, synergistic modification with phosphonic acid and nano-oxides, and compounding of multi-level porous components. This structure can significantly suppress drastic fluctuations in VOCs concentration, providing a stable and long-lasting homogenization effect, and is suitable for VOCs homogenization treatment under fluctuating industrial waste gas concentration conditions.

The invention provides an attapulgite-based soil heavy metal repairing agent as well as a preparation method and application thereof, and belongs to the technical field of soil repairing. The repairing agent disclosed by the invention is prepared from the following components in parts by mass: 40 to 70 parts of activated attapulgite; 10 to 25 parts of biochar; 5-15 parts of a phosphate compound; 5-15 parts of an organic polymer; and 3-10 parts of zero-valent iron powder. The soil remediation agent disclosed by the invention can efficiently fix various heavy metals such as Pb, Cd, Cr, As, Cu, Zn and Hg at the same time through cooperation of various mechanisms, and is wide in application range.

The invention discloses tackifying early strength powder capable of reducing springback loss of sprayed concrete and a preparation method of the tackifying early strength powder. The tackifying early strength powder comprises the following components in parts by mass: 200-700 parts of active attapulgite mineral powder, 50-1050 parts of silicon powder, 10-50 parts of anhydrous sodium silicate powder, 5-175 parts of hydrophilic acrylate powder and 10-120 parts of basalt fiber. According to the tackifying early strength powder capable of reducing the springback loss of the sprayed concrete and the preparation method, the defects that the springback rate of falling blocks in current tunnel primary lining sprayed concrete construction is high, the cost of external additives is high, the spraying construction requirement is complex and the like are overcome, the sprayed concrete construction efficiency is improved, the engineering cost is saved, and resource consumption is reduced; the win-win situation of engineering economic and social benefits is achieved.

The invention discloses a composite activated attapulgite soil conditioner and a preparation method thereof, and belongs to the technical field of soil conditioners. The improver is prepared from the following components in parts by weight: 50 to 60 parts of urea, 20 to 40 parts of monoammonium phosphate, 10 to 20 parts of monopotassium phosphate, 3 to 8 parts of potassium silicate, 3 to 8 parts of rice husk charcoal, 0.05 to 0.2 part of boric acid, 0.1 to 0.5 part of anhydrous magnesium sulfate, 0.05 to 0.2 part of zinc sulfate, 5 to 10 parts of a water-retaining agent and 10 to 20 parts of activated attapulgite. Compared with the prior art, the modifier disclosed by the invention has high adsorption and fixation capability and desorption resistance on phosphorus, can effectively reduce nutrient loss, remarkably improves the saturated water-holding capacity of soil, reduces water evaporation and improves the soil moisture content, and is easy to industrially apply.

The invention discloses a preparation method of activated attapulgite and application of the activated attapulgite in water-based drilling fluid and well cementation cement slurry. The preparation method of the activated attapulgite comprises the following steps: carrying out mechanical activation and heat treatment on an attapulgite raw material to obtain a physical activation product; and carrying out alkalization treatment and / or acidification treatment on the physical activation product to realize chemical activation. The specific surface area and the pore volume of the obtained activated attapulgite are improved, and the dispersity is enhanced; when the drilling fluid is used for water-based drilling fluid, filtration loss can be reduced, and rheological stability and well wall sand-carrying capacity can be improved; and when being used for well cementation cement slurry, the additive can improve slurry uniformity, anti-settling performance and construction adaptability.

The invention relates to the technical field of attapulgite, and provides alkali-ultrasonic synergistically activated attapulgite and application thereof in rubber, the alkali-ultrasonic synergistically activated attapulgite is prepared by the following method: S1, purification treatment of attapulgite: adding water into attapulgite to prepare slurry, stirring and dispersing, settling, taking the slurry, dehydrating and drying to obtain the alkali-ultrasonic synergistically activated attapulgite; the purified attapulgite is obtained; s2, alkali treatment: adding the attapulgite purified in the step S1 into a NaOH solution to obtain an attapulgite mixed solution subjected to alkali treatment; s3, ultrasonic treatment: carrying out ultrasonic treatment on the attapulgite mixed solution subjected to alkali treatment in the step S2 at 60-80 DEG C to obtain an alkali-ultrasonic synergistic activated attapulgite mixed solution; and S4, cleaning and drying: after cooling the attapulgite mixed solution subjected to alkali-ultrasonic synergistic activation in the step S3, dehydrating, washing and drying.

This invention relates to the field of homogenizing agent preparation technology, and discloses a composite VOCs concentration homogenizing agent and its preparation method. The homogenizing agent is mainly composed of powdered activated carbon, steam-activated attapulgite clay, and modified diatomaceous earth, combined with a compound molecular sieve, lubricant, and binder. First, the attapulgite clay is activated at high temperature with saturated steam to obtain modified clay. Then, the diatomaceous earth is modified with phosphonic acid and rapidly composited with nano-ZrO2 and mesoporous silica to obtain modified diatomaceous earth. Subsequently, the powder components are dry-mixed uniformly, water is added to form a mold, and then the product is obtained through step drying and heat preservation curing. This invention constructs an adsorption-slow-release synergistic multi-level porous structure through steam activation to open pores, synergistic modification with phosphonic acid and nano-oxides, and compounding of multi-level porous components. This structure can significantly suppress drastic fluctuations in VOCs concentration, providing a stable and long-lasting homogenization effect, and is suitable for VOCs homogenization treatment under fluctuating industrial waste gas concentration conditions.

The invention relates to the technical field of attapulgite, and provides a preparation method of acid-salt activated attapulgite and application of the acid-salt activated attapulgite in ammonia-nitrogen wastewater treatment.The preparation method of the acid-salt activated attapulgite comprises the following steps that 1, a titanium salt solution, a magnesium salt solution and acid-activated attapulgite slurry are prepared; 2, synchronously adding a titanium salt solution and a magnesium salt solution into the acid-activated attapulgite slurry, and uniformly dispersing to obtain a titanium salt-magnesium salt-attapulgite mixed slurry; wherein the solid-to-liquid ratio of the attapulgite in the mixed slurry of the titanium salt, the magnesium salt and the attapulgite is (1: 8)-(1: 12), 0.03-0.06 mol of the titanium salt is correspondingly added into every 100g of the acid-activated attapulgite, and the molar ratio of the titanium salt to the magnesium salt is (1: 1.5)-(1: 2.5); 3, dropwise adding a 1-2 mol / L NaOH solution into the titanium salt-magnesium salt-attapulgite mixed slurry prepared in the step 2 while stirring, and adjusting the pH value to 9-10 to obtain a loaded and settled mixed slurry; 4, transferring the loaded and settled mixed slurry obtained in the step 3 to 60 DEG C, standing and aging for 4-6 hours; and 5, cooling, centrifuging, resuspending and washing, centrifuging, drying and grinding the loaded and settled mixed slurry obtained after the reaction in the step 4 to obtain a finished product.

The invention relates to the technical field of electrochemical energy storage batteries, in particular to a high-energy-density positive electrode material and a preparation method thereof, a zinc ion battery positive electrode and a zinc ion battery. Comprising a zinc salt, hexamethyl-hexaaza-trinaphthalene and an iron and manganese oxide loaded attapulgite-hydrothermal carbon composite material, and the iron and manganese oxide loaded attapulgite-hydrothermal carbon composite material is prepared by compounding hydrochloric acid activated attapulgite and hydrothermal carbon and loading an iron and manganese bimetallic oxide in situ. Through the hexamethyl-hexaaza-trinaphthalene and the iron and manganese oxide loaded attapulgite-hydrothermal carbon composite positive electrode material, the hexamethyl-hexaaza-trinaphthalene has the advantages of flexible structure and simple preparation, and the energy density, the cycle stability and the rate capability of the zinc ion battery are further improved.