29 results about "Sodium aluminosilicate" patented technology

The invention discloses a preparation method of a mycotoxin degrading enzyme intelligent slow-release feed additive, and relates to the technical field of feed additive production, a double-emulsion embedding technology is adopted, enzyme is embedded in a multi-layer shell composed of chitosan, sodium alginate and an enteric polymer Eudragit S100, and then Ca < 2 + > ion cross-linking solidification is performed to obtain the mycotoxin degrading enzyme intelligent slow-release feed additive. And finally, freeze-drying or spray-drying to obtain the core-shell structure microcapsule. The obtained microcapsules are compounded with functional carriers such as yeast cell walls, sodium aluminosilicate, mannan oligosaccharide, talcum powder and the like to prepare finished products which can be directly added into various feeds. The release rate of the additive in simulated gastric juice with the pH value of 2.0 for 4 hours is lower than 15%, the release rate of the additive in simulated intestinal juice with the pH value of 6.8 for 6 hours exceeds 90%, the enzyme activity can be effectively protected, and targeted release of intestinal tracts is achieved; meanwhile, the compound carrier has a synergistic adsorption effect on various mycotoxins, and the degradation rates of aflatoxin B1, zearalenone and ochratoxin A in an in-vitro experiment respectively reach 87% or above.

The invention discloses a soil organic modifier for ecological reconstruction of hardened soil and a preparation method thereof, the soil organic modifier is composed of a biological dry fermentation fertilizer and earthy palygorskite according to a volume ratio of 10-30: 1, and the water content is 25-40%; the biological dry fermentation fertilizer is prepared from livestock manure and a biomass material through anaerobic fermentation, and the biomass material is obtained by modifying sodium aluminosilicate, biochar and ceramsite through an organic matter-hot dipping method. The soil organic modifier prepared by the invention is used for hardened soil, improves soil pores, increases soil organic matters and nutrients, improves the sustainable reproduction environment of soil organisms, realizes optimization of soil physical and chemical properties, improves crop resistance, increases the yield and quality of crops, and reverses the problems of soil hardening and degradation and the like.

The invention relates to a fast ion conductor-stabilizer composite coated lithium manganese iron phosphate material as well as a preparation method and application thereof. The lithium manganese iron phosphate material comprises a lithium manganese iron phosphate inner core and a coating layer on the surface of the lithium manganese iron phosphate inner core, the coating layer is obtained by mixing sodium aluminosilicate, magnesium metaaluminate, a coating carbon source and a lithium supplement agent, coating the surface of the lithium manganese iron phosphate inner core with the mixture, and performing sintering treatment. According to the invention, sodium aluminosilicate and magnesium metaaluminate are combined with conductive carbon to carry out co-coating treatment on lithium manganese iron phosphate, and in a high-temperature sintering process, part of Na < + > / Al < 3 + > / Mg < 2 + > multi-ions are co-embedded into a near surface layer of a lithium manganese iron phosphate crystal, so that a unit cell structure which is more stable in structure and easier in Li < + > diffusion is formed. In the high-temperature sintering process, part of magnesium metaaluminate reacts with the lithium supplement agent to form an Al-based fast ion conductor, and sodium aluminosilicate has a wider Li < + > diffusion channel, so that the material has excellent rate capability.

The application relates to a method for improving the crystallinity of a molecular sieve, which comprises the following steps: first crystallization of a first sodium aluminosilicate gel slurry until the first sodium aluminosilicate gel slurry is crystallized to a first crystallinity, then adding an alkali liquor into the first sodium aluminosilicate gel slurry to obtain a second sodium aluminosilicate gel slurry with a target alkali ratio; and second crystallization of the second sodium aluminosilicate gel slurry to obtain a molecular sieve. When the first sodium aluminosilicate gel slurry is crystallized to the first crystallinity, the alkali liquor is added into the first sodium aluminosilicate gel slurry, so that new crystallization power is injected into the first sodium aluminosilicate gel slurry system, thereby improving the crystallinity of the molecular sieve; the second sodium aluminosilicate gel slurry with the target alkali ratio is subjected to the second crystallization, further crystallization power is provided for improving the crystallinity, and thereby the molecular sieve with high crystallinity is obtained.

The invention discloses a silicon removal agent and application thereof in alkaline vanadium-containing leachate, and the silicon removal agent is obtained through the following steps: taking aluminum-containing silicon removal slag as a raw material, putting the aluminum-containing silicon removal slag into a NaOH solution, continuously stirring, filtering, collecting solids, drying and grinding to obtain the silicon removal agent, wherein the pH (Potential of Hydrogen) value of the NaOH solution is 8.0 to 10.0; the NaOH solution also contains cationic polyacrylamide, and the concentration of the cationic polyacrylamide is 0.1 to 0.3 mg / ml; the stirring temperature is 80 to 95 DEG C, and the temperature is kept for 60 to 120 minutes. Alkaline vanadium-containing leachate obtained through a sodium salt roasting-water leaching process of vanadium-containing raw materials (vanadium slag and the like) is used as a raw material, aluminum salt (aluminum sulfate, sodium metaaluminate and the like) is used as an impurity removal agent, precipitate sodium aluminosilicate hydrate is added, a sodium aluminosilicate porous material is obtained after treatment, and the sodium aluminosilicate porous material can be used as a silicon removal agent and precipitate floc. And removing silicon impurities in the solution under a weakly alkaline condition.

The invention relates to the technical field of silicon adsorption, in particular to a silicon-containing sodium aluminate solution desiliconizing agent and a preparation method and application thereof. The invention relates to a preparation method of a desiliconizing agent for a silicon-containing sodium aluminate solution. The preparation method comprises the following steps: (1) carrying out crushing, acid pickling, washing and drying on a zeolite raw material to obtain pretreated zeolite; (2) dissolving polyethyleneimine in a solvent to prepare a polyethyleneimine solution; (3) adding the pretreated zeolite into a polyethyleneimine solution to obtain a mixed system; (4) adding a cross-linking agent into the mixed system, and stirring to obtain a reaction solution; and (5) carrying out solid-liquid separation on the reaction liquid, washing the obtained solid to be neutral, and drying to obtain the product. According to the invention, the selective adsorption capacity and deep desiliconization capacity of silicate are remarkably improved by utilizing the strong positive electricity and complexing capacity of PEI and combining the carrier characteristics of zeolite, and meanwhile, the PEI is firm in loading and good in stability in a strong alkaline environment. The efficient and environment-friendly desiliconizing agent provided by the invention effectively reduces the generation of solid wastes and reduces the production cost.

The invention relates to the technical field of red mud iron separation, and discloses a method for recycling sodium aluminate and sponge iron through cooperation of deep reduction of red mud iron separation tailings, and the method specifically comprises the following steps that 1, material preparation and briquetting are conducted, specifically, the red mud iron separation tailings, a carbonaceous reducing agent and a calcium additive are mixed and formed, and raw material briquettes are obtained; refractory iron oxide is thoroughly converted into metal iron through deep reduction, then high-grade sponge iron is obtained through magnetic separation, the sponge iron can be directly used as a high-quality raw material for electric furnace steelmaking, high-added-value recovery of iron elements is achieved, and through regulation and control of a calcium additive, the production cost is reduced. In the reduction process, stable sodium aluminosilicate is converted into sodium aluminate which is easily leached by alkali liquor, efficient and synchronous leaching of aluminum and sodium is achieved, the obtained sodium aluminate solution is high in purity and wide in utilization approach, the deep reduction process creates conditions for iron recovery, meanwhile, phase reconstruction is conducted for aluminum extraction, the two processes promote each other, and the recovery rate of aluminum is increased. And an efficient collaborative recovery system is formed.

The application discloses a method for preparing lithium carbonate from hard rock type lithium ore, and belongs to the technical field of smelting lithium carbonate from lithium-containing minerals. The method comprises the steps of transformation sintering, batching, high-pressure leaching and post-treatment, and lime milk is added in the high-pressure leaching step. In the application, lithium in the ore is transferred out of the ore in the form of lithium carbonate through high-pressure leaching, and the lime milk is added at the same time of leaching, so that sodium aluminosilicate is promoted to transform into a canasite substance; the canasite substance has small solubility and is easy to be separated, thereby reducing impurities in the product; in addition, the canasite substance can also adsorb impurities and purify the solution; finally, the canasite substance can be reused as a cement component. After high-pressure leaching, the slurry is separated from mother liquor at the leaching temperature, and is returned to batching, so that lithium carbonate returned with the mother liquor is reduced, sodium carbonate in the mother liquor is recovered, and the material flow in the post-treatment step is reduced, thereby improving the circulation efficiency.

Admixtures and processes for extracting lithium from lithium-bearing silicates are disclosed In one example, the process includes reacting a lithium-bearing silicate with a sodium carbonate in a protic high-boiling (PHB) solvent thereby producing a mixture containing solid lithium carbonate and a sodium aluminosilicate. (Figure 1)

The invention discloses a preparation method of an adsorbent for producing high-purity silane and the adsorbent. The method comprises the following steps: step 1, carrying out oxidation treatment on activated carbon; 2, uniformly mixing the sample obtained in the step 1 with a copper salt precursor; 3, calcining the sample obtained in the step 2 in an inert atmosphere to obtain a CuO / AC inner core; step 4, dispersing the CuO / AC inner core into the sodium aluminosilicate sol, and then adding a template agent to carry out hydrothermal reaction, so that sodium aluminosilicate is crystallized to obtain an adsorbent precursor; and step 5, roasting the adsorbent precursor to obtain the adsorbent. The adsorbent is provided with a CuO / AC inner core and a molecular sieve shell, when impurities are adsorbed, the molecular sieve shell preliminarily adsorbs borane and phosphorane in silane, and deep purification is achieved through Cu ions in the CuO / AC inner core; meanwhile, the high conductivity of the activated carbon promotes electron transfer, and the reaction between Cu ions and phosphorane / borane is accelerated.

This invention provides a composition for controlling anthracnose in peppers and its preparation method, belonging to the field of plant disease control technology. The composition of this invention, by weight, comprises the following components: 30-55 parts of Bacillus fermentation culture broth, 5-17 parts of loquat leaf extract, 3-8 parts of hawthorn leaf extract, 2-6 parts of milk thistle extract, 1-5 parts of sodium aluminosilicate, 4-7 parts of polyethylene glycol, and 5-8 parts of ε-polylysine. This invention, by mixing Bacillus fermentation culture broth, compound plant extracts, sodium aluminosilicate, polyethylene glycol, and ε-polylysine, can effectively control anthracnose in peppers. The addition of sodium aluminosilicate, polyethylene glycol, and ε-polylysine to the formula prevents flocculation and precipitation, and improves the storage stability of the composition.

The invention discloses a modified aluminum red mud material and application thereof, and belongs to the field of metallurgical solid waste recycling. The preparation method of the material comprises the following steps: drying and crushing aluminum red mud, spraying a complexing modifier to obtain an intermediate, adding a neutralization curing liquid for neutralization treatment, and naturally ventilating to obtain a modified aluminum red mud material; the complexing modifier is prepared from a copolymer substrate solution through amination and polybasic carboxylic acid complexing modification; the neutralization curing liquid is prepared by double-acid activation, sodium aluminosilicate reaction and chelating dispersion; the two synergistically realize alkaline neutralization and heavy metal deep curing. The preparation process is carried out at normal temperature, uniform contact of reagents is realized through a nano spray gun, the pH value of the modified material is stabilized at alkalescence, the heavy metal leaching amount is lower than the hazardous waste standard, hazardous solid waste is converted into general industrial solid waste, and the material can be used as a substitute for road beds, building materials and fly ash, and is high in process universality and suitable for industrial popularization. The environment-friendly and resource utilization values are realized.

The invention relates to a strong-alkali-resistant brominated butyl rubber plug, belongs to the field of medical rubber accessories, and provides a butyl rubber plug which is used for packaging a strong-alkali pharmaceutical preparation and has relatively high purity. The rubber plug formula comprises the following raw material components in parts by weight: brominated butyl rubber, butyl rubber, calcined kaolin, hydroxyapatite, sodium aluminum silicate, titanium dioxide, carbon black, stearic acid, magnesium oxide, a vulcanizing agent, an organic filler and a plasticizer. The strong-alkali-resistant brominated butyl rubber plug adopts a novel carbon-nitrogen heterocyclic environment-friendly vulcanizing agent vulcanization system, is supplemented with strong-alkali-resistant organic and inorganic filling agents, and has good strong-alkali resistance and excellent medicine compatibility.

The invention belongs to the technical field of metallurgy, and particularly relates to a pretreatment system and a pretreatment method for low-grade bauxite. The pretreatment system provided by the invention is used for heating the low-grade bauxite in stages to gradually realize desulfurization and activation; in the heating process of the first stage, sulfur in the low-grade bauxite is decomposed into gaseous sulfur to be removed; in the second-stage heating process, a crystal structure existing in a kaolinite crystal form between aluminum oxide and silicon dioxide in the low-grade bauxite is destroyed, so that the kaolinite crystal form is converted into amorphous semi-crystalline or amorphous, and the chemical reaction activity of silicon dioxide is improved; the silicon dioxide can easily react with aluminum and caustic soda liquid (sodium hydroxide) to generate sodium aluminosilicate precipitates, and subsequent separation and removal of silicon are facilitated, so that the aluminum-silicon ratio is increased, and recycling of the low-grade bauxite is realized.

Disclosed is a melt and pour soap bar composition comprising 6 to 20 wt% soap, 4 to 20 wt% of sodium aluminosilicate; and 60 to 80% of water.

The application relates to a 13X type molecular sieve and a preparation method thereof, and the method comprises the following steps: obtaining a sodium aluminosilicate gel slurry through a reaction solution system with a first set silicon-aluminum ratio; adding crystal seeds into the sodium aluminosilicate gel slurry, and then performing aging to obtain a slurry containing 13X type molecular sieve crystals; adding a first aluminum source solution into the slurry containing the 13X type molecular sieve crystals to obtain a reaction solution system with a second set silicon-aluminum ratio, and then performing crystallization to obtain the 13X type molecular sieve. In the single-cation synthesis system, the aluminum source solution is added before crystallization, the silicon-aluminum ratio of the synthesis system is adjusted to 2.0-2.1, and the silicon-aluminum ratio of the product after crystallization can reach the low silicon-aluminum ratio requirement of 2.0-2.2. A 13X molecular sieve with a low silicon-aluminum ratio is obtained, and the problem of difficult mother liquor treatment is avoided, and the generated mother liquor can be directly recycled.

The invention provides a curing agent applied to a soft soil foundation and a preparation method and application thereof, and belongs to the technical field of building materials.The curing agent applied to the soft soil foundation is prepared from 85 parts of second-ball desulfurized fly ash, 5-7 parts of straw ash, 9-10 parts of alkaline residues, 1.5-2 parts of sodium aluminosilicate and 0.5-1 part of triethanolamine; the preparation method comprises the following steps: uniformly mixing a desulfurized fly ash pretreatment material, straw ash and sodium aluminosilicate to obtain a material A; uniformly mixing the alkaline residue pretreated material with triethanolamine to obtain a material B; the material A and the material B are jointly used as the curing agent applied to the soft soil foundation; according to the application, soft soil and the curing agent applied to the soft soil foundation are mixed through a solid stirring method, and then rolling and curing are conducted. By optimizing the raw material ratio and the preparation process, a substance with excellent gelling property and curing effect can be generated, and the strength and stability of the soft soil are remarkably improved.

The present application belongs to the field of fly ash slurry stable transportation, and particularly relates to a method for preventing fly ash slurry stratification and keeping stable. The method is: extracting large leafed wood ear saponin; preparing sodium silicate from fly ash; selecting the best component ratio of saponin and sodium silicate, and adding fly ash slurry. The present application has the advantages of being more green and sustainable for fly ash slurry transportation, avoiding stratification solidification in fly ash secondary treatment, and adopting natural surfactant compared with commercial specific surface activator hexadecyl trimethyl ammonium bromide. The viscosity, surface tension and concentration of fly ash slurry are tested and compared, which not only reduces the surface tension of fly ash slurry to reduce stratification and aggregation, but also adds sodium silicate to the fly ash slurry system to generate sodium aluminosilicate, which significantly improves the stability of fly ash slurry.

A group of glass compositions in the Li2O—Al2O3—SiO2—B2O3 family that can be chemically strengthened in single or multiple ion exchange baths containing at least one of NaNO3 and KNO3 for a short time (2-4 hours) to develop a deep depth of layer (DOL). In some instances, the DOL is at least 70 μm; in others, at least about 100 μm. The ion exchanged glasses have a high damage resistance (indentation fracture toughness ranging from greater than 10 kgf to greater than 50 kgf) that is better than or at least comparable to that of sodium aluminosilicate glasses.

The present invention relates to the field of chemistry and chemical engineering and can be used for extracting lithium carbonate from lithium-bearing spodumene ore for battery production. The method for extracting lithium carbonate from spodumene ore comprises sintering a mixture of precursors: α-spodumene concentrate, sodium carbonate and alumina — to obtain a sinter containing sodium aluminosilicate and lithium carbonate. The sinter is then ground and leached with water in a countercurrent process; the resulting lithium carbonate solution is separated from the sodium aluminosilicate and evaporated, the solid lithium carbonate precipitate is separated from the remaining liquid. The leaching water is sequentially heated first by the steam generated during evaporation and then by the gases released during sintering. The liquid remaining after separation of the solid lithium carbonate precipitate and the condensate after cooling of the steam are combined with the leaching water before its heating. The technical result of the claimed invention is the development of an industrial method for extracting lithium carbonate from spodumene ore with reduced energy consumption and material intensity, as well as a decrease in the amount of by-products.

This invention relates to a fast-ion conductor-stabilizer composite-coated lithium manganese iron phosphate material, its preparation method, and its applications. The lithium manganese iron phosphate material of this invention comprises a lithium manganese iron phosphate core and a coating layer on its surface. The coating layer is obtained by coating the surface of the lithium manganese iron phosphate core with a mixture of sodium aluminosilicate, magnesium aluminate, a carbon source, and a lithium supplement, followed by sintering. This invention utilizes sodium aluminosilicate and magnesium aluminate combined with conductive carbon for co-coating lithium manganese iron phosphate, achieving partial Na+ ionization during high-temperature sintering. + / Al 3+ / Mg 2+ Multiple ions are co-intercalated into the near-surface layer of lithium manganese iron phosphate crystals, thereby forming a more stable structure and Li + A cellular structure that facilitates diffusion. During high-temperature sintering, some magnesium aluminate reacts with the lithium supplement to form an Al-based fast ion conductor, coupled with the wider Li-ion diffusion of sodium aluminosilicate. + The diffusion channels give the material excellent rate performance.

Disclosed is a melt and pour soap bar composition comprising 6 to 20 wt% soap, 4 to 20 wt% of sodium aluminosilicate; and 60 to 80% of water.

The application provides a negative electrode material and a preparation method thereof, a negative electrode sheet and a lithium ion battery. The negative electrode material comprises single crystal silicon, a sodium aluminosilicate core and a coating layer, wherein the single crystal silicon is embedded in the sodium aluminosilicate core, and the coating layer comprises a carbon coating layer, and the carbon coating layer is coated on the surface of the sodium aluminosilicate core. The single crystal silicon in the negative electrode material is embedded in the sodium aluminosilicate core, which helps to reduce the volume expansion of the single crystal silicon in the charging and discharging process and reduce the erosion of water to the single crystal silicon in the homogenization process, and further solves the problem that the silicon-based negative electrode material is prone to side reactions with water in the slurry mixing process. In addition, the carbon coating layer in the negative electrode material is coated on the surface of the sodium aluminosilicate core, which helps to improve the electrical conductivity and structural stability of the negative electrode material. The above-mentioned advantageous factors are combined, so that the negative electrode material has the characteristics of high initial efficiency, good cycle performance and good rate performance.

The invention provides a method for reducing hydrolysis loss in Bayer process aluminum oxide production, and relates to the technical field of aluminum oxide. The method comprises the following steps: carrying out settling separation on ore pulp to generate crude liquid and red mud slurry, carrying out leaf filtration on the crude liquid, then carrying out seed crystal decomposition, carrying out three-stage countercurrent washing on the red mud slurry, stacking the washed red mud for subsequent treatment, and conveying washing liquid to a mother liquor evaporation process; wherein carbon dioxide is introduced into the underflow of the second-stage countercurrent washing for mild and controllable carbonization, so that silicon in the hydrated sodium aluminosilicate is precipitated into the red mud in a silica gel form, the underflow is subjected to centrifugal separation and then overflows and is sent to a mother liquor evaporation process, and the underflow is sent to a third-stage countercurrent washing process. The red mud slurry is mildly and controllably carbonized through carbon dioxide, so that silicon in the hydrated sodium aluminosilicate is precipitated into the red mud in a silica gel form, and the aluminum recovery rate is increased.

The application discloses a kind of soil organic modifier for ecological reconstruction of hard soil and preparation method thereof, the soil organic modifier is by biological dry fermentation fertilizer and soil-like palygorskite according to volume ratio 10-30:1 Composition, moisture content is 25-40%;The biological dry fermentation fertilizer is prepared by poultry manure and biomass material by anaerobic fermentation, and the biomass material is modified by organic matter-thermal impregnation method by sodium aluminosilicate, biochar and ceramic ball is obtained.The soil organic modifier prepared by the application is used for hard soil, improves soil porosity, increases soil organic matter and nutrient, improves the environment of sustainable reproduction of soil biology, realizes the optimization of soil physicochemical properties, improves crop resistance, increases its yield and quality, reverses the problem such as hard soil degradation.

The invention discloses a method for quantitatively trapping alkali metal steam by using kaolin. The method comprises the following steps: blending 20-63 [mu] m high-purity kaolin and 100 [mu] m analytically pure NaCl according to mass ratios of 2%, 4% and 6%, placing the blended sample in a high-temperature reactor of 1100 DEG C for reaction, quantitatively trapping gas-phase alkali metal by using chemical adsorption and physical trapping effects of the kaolin on alkali metal vapor, and determining the content of the alkali metal in the gas-phase alkali metal in the gas-phase alkali metal in the gas-phase alkali metal in the gas-phase alkali metal in the gas-phase alkali metal in the gas-phase alkali metal in the gas-phase alkali metal. And finally, stable sodium aluminosilicate minerals are formed. According to the invention, the concentration of alkali metal steam in flue gas is obviously reduced, and the alkali metal trapping efficiency of kaolin is improved to 82%, so that the problems of contamination, slagging and corrosion of the heating surface of the boiler are effectively relieved.

The application discloses a modified aluminum red mud material and application thereof, and belongs to the field of metallurgical solid waste recycling. The material preparation steps are as follows: aluminum red mud is dried and crushed, a complex modifier is sprayed to obtain an intermediate, a neutralization solidification liquid is added for neutralization treatment, and the modified aluminum red mud material is obtained after natural ventilation; the complex modifier is prepared by ammination and modification of a copolymer base liquid with a polybasic carboxylic acid; the neutralization solidification liquid is prepared by double-acid activation, sodium aluminosilicate reaction and chelation dispersion; and the two cooperate to realize alkaline neutralization and deep heavy metal solidification. The preparation process of the application is carried out at normal temperature, reagents are uniformly contacted through a nano spray gun, the pH of the modified material is stably weak alkaline, the heavy metal leaching amount is lower than the hazardous waste standard, the hazardous solid waste is converted into general industrial solid waste, the material can be used as a road subgrade, a building material and a fly ash substitute, the process has strong universality, is suitable for industrialization popularization, and has environmental protection and resource utilization values.

The invention belongs to the technical field of inorganic chemical separation and purification, and particularly relates to a method for removing impurities in a sodium silicate solution. The method comprises the following steps: stirring a sodium silicate solution at a certain temperature for a period of time, adding hydrogen peroxide and a catalyst into the sodium silicate solution, generating a colloid structure, and aging; and finally, carrying out solid-liquid separation to obtain the impurity-removed high-purity sodium silicate solution. The catalyst is ferrous sulfate heptahydrate or zinc nitrate, can effectively excite decomposition of hydrogen peroxide to form high reactive oxygen free radicals and promote selective precipitation of aluminum oxide into hydrated sodium aluminosilicate colloid, SiO2 in a sodium silicate solution is kept in a dissolved state, and the precipitation rate is 0 or extremely low. The method has the advantages of mild reaction conditions, rapid gel forming, stable structure and simple process, is suitable for industrial continuous operation, and is especially suitable for precursor purification treatment in the preparation process of a high-purity silicon material.