53 results about "Sodium aluminosilicate" patented technology

The invention relates to a 13X type molecular sieve and a preparation method thereof. The method comprises the following steps: obtaining sodium aluminosilicate gel slurry through a reaction solution system with a first set silica-alumina ratio; adding a seed crystal into the sodium aluminosilicate gel slurry, and aging to obtain slurry containing 13X type molecular sieve crystals; and 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 silica-alumina ratio, and then crystallizing to obtain the 13X type molecular sieve. In the monocation synthesis system, the aluminum source solution is added before crystallization, the silica-alumina ratio of the synthesis system is adjusted to 2.0-2.1, and the silica-alumina ratio of the crystallized product can reach the low silica-alumina ratio requirement of 2.0-2.2. The 13X molecular sieve with the low silica-alumina ratio is obtained, meanwhile, the problem that mother liquor is difficult to treat is solved, and the generated mother liquor can be directly recycled.

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 dechlorinated and detoxified fly ash-waste glass powder-slag composite alkali-activated cementing material and a preparation method thereof. The alkali-activated cementing material takes hydrated calcium aluminosilicate gel and hydrated sodium aluminosilicate gel as main components, and comprises the following raw materials: dechlorinated and detoxified fly ash, waste glass powder, slag and an alkali activator, and the alkali activator is prepared from a sodium silicate solution and a sodium hydroxide solid; the raw materials are scientifically proportioned, so that efficient resource utilization is realized, and the performance of the alkali-activated cementing material is improved. The selected precursor is rich in active mineral components such as calcium, silicon and aluminum, an alkali activator prepared by adding a sodium silicate solution and a sodium hydroxide solid provides an ideal alkaline environment for a system, and the system can generate C-A-S-H gel and N-A-S-H gel at the same time due to complementary and synergistic effects of chemical components of all the components. Therefore, the material properties of high compressive strength, moderate setting time and reaction heat balance are realized, and meanwhile, good working performance and long-term durability are realized.

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.

Separating the specific gravity gt of the solid-liquid mixture type underflow red mud discharged in aluminum oxide production from liquid; continuously grading and separating out ferric oxide, trace heavy metal minerals and rare earth from the 5 g / cm < 3 > material, and carrying out solid-liquid separation treatment; the separated materials with the specific gravity smaller than or equal to 5 g / cm < 3 > are atomized and dispersed into particles and liquid drops, the particles and the liquid drops are quickly freeze-dried to prepare fine particles, and the fine particles are divided into sodium aluminosilicate and silicon oxide mixed particles, calcium compound mixed particles and crystallized sodium hydroxide, sodium aluminate and ice crystal particles through multi-stage specific gravity classification in the environment with the temperature smaller than-5 DEG C; and sublimating and dehydrating the separated sodium aluminosilicate and silicon oxide mixed particles and calcium compound mixed particles to form powder materials, and melting sodium hydroxide, sodium aluminate and ice crystal particles at normal temperature to form a solution containing sodium aluminate and sodium hydroxide.

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 invention relates to a flexible solar cell and a glass substrate and application thereof, and belongs to the technical field of solar cells. The flexible sodium aluminosilicate glass is prepared from the following components: 55 percent to 62 percent of SiO2, 15 percent to 25 percent of Al2O3, 1 percent to 5 percent of B2O3, 10 percent to 14 percent of Na2O, 0.1 percent to 5 percent of K2O, 1 percent to 9 percent of MgO, 1 percent to 3 percent of ZnO, 0.1 percent to 2 percent of La2O3 and 0.5 percent to 2.5 percent of CeO2. Through mutual cooperation of all the components and adjustment and control of the content range of all the components, the glass substrate has the advantages of having the same or similar thermal expansion coefficient as a cell material, being capable of bearing the cell preparation process temperature, being small in surface roughness, light, low in cost and the like, and is suitable for preparing flexible solar cells. Therefore, the flexible solar cell has high photoelectric conversion efficiency and good portability and durability.

The present invention discloses a dechlorination and detoxification fly ash-waste glass powder-slag composite alkali-activated gelling material and a preparation method thereof. The alkali-activated gelling material is mainly composed of hydrated calcium aluminosilicate gel and hydrated sodium aluminosilicate gel, and the raw material composition includes: dechlorination and detoxification fly ash, waste glass powder, slag and alkali activator, wherein the alkali activator is prepared from sodium silicate solution and sodium hydroxide solid; the present invention realizes efficient resource utilization and improvement of the performance of alkali-activated gelling materials by scientifically proportioning raw materials. The precursor selected by the present invention is rich in active mineral components such as calcium, silicon, and aluminum, and the alkali activator prepared by adding sodium silicate solution and sodium hydroxide solid provides an ideal alkaline environment for the system, and the chemical components between the components complement and synergize, so that the system can simultaneously generate C-A-S-H gel and N-A-S-H gel. Thereby achieving material properties of high compressive strength, moderate setting time, and reaction heat balance, while having good working performance and long-term durability.

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 present invention discloses a cathode material for a sodium-ion battery and a preparation method thereof. The cathode material includes a mother nucleus, a first coating layer, and a second coating layer. The mother nucleus is a polyanion compound, the first coating layer is a carbon layer generated after the pyrolysis and carbonization of an organic sodium compound precursor, and the second coating layer is nano sodium aluminosilicate particles. The first coating layer uniformly and completely coats the surface of the mother nucleus and the second coating layer particles, and the second coating layer particles uniformly and completely coat the mother nucleus already coated with the first coating layer. The first coating layer and the second coating layer particles act synergistically to reduce the electron and ion conduction distances and structural stress during the charge and discharge process of the material and regulate the grain size of the material, effectively improving the capacity, rate performance, cycle performance, and tap density of the material. The second coating layer can improve the grinding efficiency during the grinding process in the material processing and preparation process and reduce the sintering temperature and shorten the sintering cycle during the sintering process, reduce energy consumption, and improve the processing and preparation efficiency, thereby reducing the material preparation cost.

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 present invention discloses a denitrification combustion-supporting and acid mist removing additive, belonging to the technical field of sulfur transfer agents for catalytic cracking flue gas. This method involves reacting precisely proportioned ferric chloride, magnesium chloride, aluminum chloride with an aqueous sodium hydroxide solution to form a cross-linking agent solution, mixing it with modified magnesium saponite and conducting a heating and heat preservation treatment to form a cross-linked structure. Subsequently, the cross-linked magnesium saponite is impregnated in a solution containing various metal salts and calcined to obtain the final additive. The preparation of the modified magnesium saponite uses polyethylene glycol ether and sodium aluminosilicate to optimize the pore structure and thermal stability. Compared with the prior art, the additive of the present invention effectively reduces the emissions of SO X and NO X during the catalytic cracking process, especially the emission of sulfur trioxide, improves the combustion efficiency, reduces the generation of pollutants, and at the same time avoids the use of toxic substances, reduces environmental pollution, and has significant environmental and economic benefits.

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.

The present invention discloses a preparation method of sodium aluminosilicate microspheres. The preparation method uses sodium aluminate and tetraethyl orthosilicate as raw materials through a solvothermal method to synthesize sodium aluminosilicate microspheres under alkaline conditions. The present invention provides a preparation method of sodium aluminosilicate microspheres with low density, low thermal conductivity, and good chemical stability. It has been improved on the traditional production method, and sodium aluminosilicate hollow microspheres are directly synthesized by a one-step method, simplifying the production process of silicate hollow microspheres, enabling sodium aluminate and tetraethyl orthosilicate to directly react under appropriate conditions, reducing the production time, improving the production efficiency, shortening the actual production cycle, and showing great application prospects.

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.

The invention relates to 4A zeolite, a preparation method thereof and PVC, and belongs to the technical field of zeolite preparation. The method comprises the following steps: at a first temperature, carrying out a gel forming reaction on an aluminum source with a second temperature and a silicon source with a third temperature to reduce the bonding strength of a product of the gel forming reaction so as to obtain sodium aluminosilicate gel slurry; and crystallizing the sodium aluminosilicate gel slurry to obtain the 4A zeolite. At a first temperature, an aluminum source with a second temperature and a silicon source with a third temperature are subjected to a gel forming reaction, an aluminum-oxygen tetrahedron AlO4 and a silicon-oxygen tetrahedron SiO4 of the aluminum source are combined to form a sodium aluminosilicate skeleton structure, and the first temperature, the second temperature and the third temperature synergistically improve the activity of ions in the skeleton. Therefore, the bonding strength between ions of a product of the gel forming reaction is reduced, and the binding force of a skeleton to water molecules is reduced. The 4A zeolite product prepared by the invention realizes moisture lt; 7%.

The invention relates to a method for improving the crystallinity of a molecular sieve, and the method comprises the following steps: carrying out first crystallization on first sodium aluminosilicate gel slurry, and adding alkali liquor into the first sodium aluminosilicate gel slurry when the first sodium aluminosilicate gel slurry is crystallized to the first crystallinity, so as to obtain second sodium aluminosilicate gel slurry with a target alkali ratio; and performing second crystallization on the second sodium aluminosilicate gel slurry to obtain the molecular sieve. When the first sodium aluminosilicate gel slurry is crystallized to a first crystallinity, adding alkali liquor into the first sodium aluminosilicate gel slurry so as to inject new crystallization power into the first sodium aluminosilicate gel slurry system, so that the crystallinity of the molecular sieve is improved; and performing second crystallization on the second sodium aluminosilicate gel slurry with the target alkali ratio to further provide crystallization power for improving the crystallinity so as to obtain the molecular sieve with high crystallinity.

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 form greater than 10 kgf to greater than 50 kgf) that is better than or at least comparable to that of sodium aluminosilicate glasses.

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 relates to 4A zeolite and a preparation method thereof, and belongs to the technical field of 4A zeolite preparation. The method comprises the following steps: S1, obtaining sodium aluminosilicate gel slurry; s2, crystallizing the sodium aluminosilicate gel slurry with the first volume to obtain slurry containing 4A zeolite with a preset crystallinity; s3, adding the sodium aluminosilicate gel slurry with a second volume into the slurry containing the 4A zeolite with the preset crystallinity, and continuing crystallization; s4, circulating the step S3 until slurry containing the 4A zeolite with the preset median particle size is obtained; s5, continuing to crystallize the slurry containing the 4A zeolite with the preset median particle size to obtain a target 4A zeolite product; wherein the crystallinity of the target 4A zeolite product is gt; 90%. According to the method, the large-particle 4A zeolite is directly prepared by adding the sodium aluminosilicate gel slurry step by step in the crystallization process, and the median particle size of the product is adjustable in the range of 10-100 microns.

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.

The invention belongs to the technical field of desiccant preparation, and particularly relates to a micro-space intelligent shaping solid desiccant and a preparation method thereof. The micro-space intelligent shaping solid drying agent is prepared from the following raw materials in percentage by weight: 20%-35% of plastic particles, 15%-20% of silicon dioxide, 20%-35% of calcium carbonate and 20%-38% of sodium aluminosilicate. The PP plastic particles, the ABS plastic particles, the silicon dioxide, the calcium carbonate and the sodium aluminosilicate are mixed according to a certain proportion, and the high-performance drying agent with customizable shape, size and thickness is prepared by utilizing an injection molding technology. The drying agent not only has excellent moisture absorption performance, but also is smooth in surface, does not need secondary packaging, and can be directly applied to various tiny spaces needing humidity control or used as components of products.

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 invention provides a method for removing silicon in aluminum oxide, and belongs to the field of aluminum oxide production. The method comprises the following steps: carrying out primary desiliconization on bauxite ore pulp, so that SiO2 in the bauxite ore pulp is converted from a supersaturated metastable state into sodium silicon slag precipitate, and obtaining primary desiliconized slurry; performing secondary desiliconization on first mixed slurry of the primary desiliconization slurry and the blending liquid, so that silicon minerals in the first mixed slurry form hydrated sodium aluminosilicate, and secondary desiliconization slurry is obtained; carrying out settling separation on the secondary desiliconized slurry with the set solid content to obtain second mixed slurry; adding an additive into the second mixed slurry to carry out tertiary desilicication so as to obtain tertiary desilicication slurry; carrying out solid-liquid separation on the tertiary desilicication slurry to obtain decomposed mother liquor; and performing low-temperature decomposition and high-temperature roasting on the decomposition mother liquor to obtain aluminum oxide. Therefore, high-quality aluminum oxide with the silicon content lower than 50 ppm is directly produced in the Bayer process production process, and the production requirement for producing high-purity aluminum raw materials is met.

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.