157 results about "Sodium aluminosilicate" patented technology

The process of preparing white carbon black and pure zeolite molecular sieve with fly ash material belongs to the field of inorganic non-metal material preparing technology. The preparation process includes the following steps: roasting the mixture of high silicon fly ash with SiO2 content of 30-65 % and sodium carbonate in the weight ratio of 1 to 1-1.5 at 830 deg.c for 1 hr to obtain roasted product with sodium silicate and sodium aluminosilicate as main components; soaking the roasted product in water in 5 times to leach out sodium silicate with high water solubility, filtering to obtain sodium silicate solution, introducing CO2 to the solution and depositing to obtain white carbon black product; and further leaching desilicated fly ash with alkali solution, heating and stirring to obtain solution of sodium aluminosilicate, which is soluble in strong alkali solution, filtering, regulating pH value and crystallizing to obtain pure zeolite molecular sieve.

The invention discloses a method for extracting titanium from vanadium-titanium magnetite. The method comprises the following steps: adding sodium or potassium salt additive in the reduction smelting of an iron ore concentrate electric stove to obtain liquid iron and titanium-containing slag, wherein vanadium and iron are reduced to enter liquid iron, under a smelting high temperature condition, silicon and aluminum impurities form sodium aluminosilicate capable of being dissolved in dilute acid with the sodium or potassium salt additive, and enabling the sodium aluminosilicate and titanium and aluminum magnesium impurities to remain in the titanium-containing slag; purifying the titanium-containing slag by virtue of a wet-method metallurgical impurity removal method, to acquire a titanium slag product with TiO2 content more than 75 percent. For the application problem of titanium in the iron ore concentrate, the slag modification additive is added in the reduction smelting process, so that not only is the mobility of the slag improved, but also a condition is created for removing the later silicon-aluminum impurities of the slag, the high-efficiency separation and extraction problem of the titanium in the iron ore concentrate can be well solved, the resource utilization rate of the iron, titanium and vanadium is greatly increased, and the utilization rate of the titanium is increased about 3 times compared with the flow of a blast furnace.

The invention discloses a semimetal ceramic base automobile brake pad, and a material formula of the semimetal ceramic base automobile brake pad is calculated in percentage by weight: 15 to 30 percent of bonding substrate, 25 to 50 percent of reinforcing fibre, 10 to 20 percent of friction performance adjusting agent, and 10 to 30 percent of filler, wherein the bonding substrate mainly takes modified sodium aluminosilicate as an inorganic high temperature adhesive, and less phenolic resin and rubber as organic middle-low temperature auxiliary adhesives; the weight ratio of inorganic ceramic adhesive to the organic adhesive is 5:1; the reinforcing fibre mainly takes steel fibre, copper fibre, ceramic or mineral fibre as auxiliary reinforcing fibres, and the weight ratio of the steel fibre to the auxiliary reinforcing fibres is 10:1; the friction performance adjusting agent comprises chromite, graphite and friction dust; and the filler is oil coke and barite. The automobile brake pad is a semimetal ceramic base automobile brake pad with high safety and reliability, and a preparation method is simple and reliable.

The invention discloses a method for extracting aluminum oxide from fluidized bed coal ash, comprising the following steps: 1, mixing the fluidized bed coal ash and sodium hydroxide aqueous solution and carrying out ball milling to obtain slurry; 2, carrying out pre-desilicication reaction on the slurry, and filtering; 3, adding calcium oxide, sodium hydroxide and water in a filter cake, carrying out hydrothermal reaction by utilizing a high-pressure water chemical method, vacuum filtering; 4, adding hydration sodium aluminosilicate in the filtrate to carry out the first-stage desilicication reaction, and adding hydration calcium aluminate to carry out the second-stage desilicication reaction; 5, evaporating and crystallizing the reaction liquid to obtain hydration sodium aluminate, and crystallizing; 6, dissolving and crystallizing, introducing carbon dioxide and filtering to obtain aluminum hydroxide solid; and 7, washing and calcining to obtain aluminum oxide. By utilizing high activity of the fluidized bed coal ash, the amount of the subsequent aluminum oxide extract is greatly reduced through pre-desilicication reaction so as to ensure industrialization; and the silicon oxide and aluminum oxide in the coal ash are separated by adding alkaline substances and utilizing the high-pressure water chemical method so as to save energy and protect the environment.

The present invention relates to a process for enhancing the yield of molecular sieve zeolite during the synthesis from a sodium aluminosilicate reaction mixture, said process comprising the step of adding at an intermediate stage of crystallization a source of aluminum to the sodium aluminosilicate reaction mixture and allowing the mixture to crystallize.

The invention discloses a semimetal ceramic matrix brake pad, the material formulation of which is as follows by weight percentage: 15-30 parts of bonding matrices, 25-50 parts of reinforcing fibers, 10-20 parts of regulators with frictional properties, and 10-30 parts of filling materials; wherein, the bonding matrix mainly takes modified sodium aluminosilicate as inorganic HTAs (high temperature adhesives) and a little of phenolic resin and rubber as organic low-and-medium temperature accessorial adhesives, and the weight ratio of an inorganic ceramic adhesive to an organic adhesive is equal to 5:1; the reinforcing fiber mainly takes steel fiber, cooper fiber, ceramics or mineral fiber as an accessorial reinforcing fiber, and the weight ratio of the steel fiber to the accessorial reinforcing fiber is 10:1; the regulators with frictional properties comprise chromite, graphite and friction dust; the filling materials comprise oil coke and baria. The semimetal ceramic matrix brake pad prepared in the invention is safe and reliable, and the manufacturing method is simple and reliable.

The invention relates to a method for producing aluminium oxide and a by-product silicon by low-temperature alkali digestion of low-grade bauxite, and belongs to the technical field of aluminium oxide production. The method comprises the following steps: firstly, smashed low-grade diasporic bauxite and a circulating mother liquid are grinded to form a mineral slurry; secondly, a digestion reaction is performed enable kaolinite in the mineral to be dissolved, react and enter a solution, filtration residues are high-grade bauxite concentrate, and the high-grade bauxite concentrate is processed for produce aluminium oxide and low-alkali red mud by adopting a Bayer process; sodium aluminosilicate in a filtrate is subjected to desilication reaction, so that sodium-silicon residues, and a filtrate containing aluminium oxide, silicon oxide and sodium oxide are obtained; and finally, the filtrate is supplemented by sodium hydroxide, and the supplemented filtrate is used as the circulating mother liquid to return for preparation of the mineral slurry through grinding, and part of the sodium-silicon residues are used as a seed crystal to return to a desilication process, and the other part of the sodium-silicon residues are used to prepare silicon products such as molecular sieves. The method is a whole-procedure wet treatment process, aluminium and silicone are fully extracted from the bauxite for preparing the corresponding products, also alkali consumption in the red mud during the Bayer process is substantially reduced, the alkali content in the red mud is reduced, and recycle value of the red mud is improved.

A composite desiliconization agent is added in sodium aluminosilicate solution with medium and high concentration for deep desiliconization, the invention relates to a chemical process method for carrying out the desiliconization of the sodium aluminosilicate solution with medium and high concentration by adopting the composite desiliconization agent under atmospheric pressure, the silicon content index of the solution after the desiliconization can be more than 7000, and the desiliconization method comprises the following steps: composition containing the sodium aluminosilicate solution is prepared, 80-90ml of the solution is taken and put in a reaction kettle, a calcium oxide and calcium sulfate composite desiliconization agent is added, the reaction kettle is put in a heat collection type constant temperature heating magnetic stirrer, supernatant liquor is taken after the solution is cooled, the concentration of Al2O3 is measured by using the complexometric titration, and the content of SiO2 is measured by using a spectrophotometer. The chemical process method is applicable to the secondary desiliconization of the sodium aluminosilicate solution with medium and high concentration. The economic benefits of using the sodium aluminosilicate solution with medium and high concentration are much higher than those of using the sodium aluminosilicate solution with low concentration under the situation of the same energy consumption, thereby being beneficial to reducing the energy consumption and promoting the sustainable development of the production of aluminum oxide.

The present invention relates to a process for enhancing the yield of molecular sieve zeolite during the synthesis from a sodium aluminosilicate reaction mixture, said process comprising the step of adding at an intermediate stage of crystallization a source of aluminum to the sodium aluminosilicate reaction mixture and allowing the mixture to crystallize.

The invention belongs to the technical field of aluminum industries, and specifically discloses a method for producing aluminum hydroxide by roasting bauxite at a low temperature. The method includesmixing crushed bauxite with a caustic solution to obtain raw slurry; roasting the raw slurry with 160-890 DEG C to obtain clinkers; performing dissolution reaction on the clinkers to obtain digestionliquor, and performing solid-liquid separating on the digestion liquor, wherein a solid phase is a pug whose iron content is larger than or equal to 40%, the pug can be sold as an iron concentrate rawmaterial after washing, a liquid phase is crude liquid, and a desilication solid phase is a sodium aluminosilicate product after the desiliconization of the crude liquid; and adding aluminum hydroxide seeds into the liquid phase to perform decomposition reaction, and performing solid-liquid separating on decomposition liquid, wherein the obtain liquid phase is seeded precipitation spent liquor, and the solid phase is an aluminum hydroxide product. The method enhances decomposition rate and cyclic efficiency, and reduces energy consumption; and compared with traditional sintering methods, theroasting temperature can be obviously reduced, the method does not generate red mud, more than 70% of silicon dioxide in the bauxite is made into the sodium aluminosilicate products, and the standardof the quality of the prepared aluminum hydroxide is better than that of the aluminum hydroxide produced by the traditional sintering methods and Bayer process.

The present invention relates to a fire metallurgy method for converting the waste slot liner or other harmful material from the aluminum production industry to the glass clinker clew of amorphous fluorine-bearing sodium aluminosilicate and amorphous fluorine-bearing aluminum calcium silicate and converting to the high-carbon material and the device. The raw materials of waste slot liner, silicon dioxide or siliceous material and calcium oxide are added to the non-burner end of the counterflow rotary burner. The material is heated to destroy the cyanide, the salt fluoride is converted to calcium fluoride and forms a homogeneous liquid material. Then the carbon is physically separated from the material. Afterwards the material is glassed to generate the valuable glass clinker clew and high-carbon material.

The invention discloses a preparing method for titaniferous inorganic flocculant and relates to the technical field of preparing methods for the titaniferous inorganic flocculant in the technical field of chemistry. Vanadium titano-magnetite serves as a basic material, a sodium or sylvine additive is added in iron ore concentrate obtained through magnetic separation in the reduction smelting process in an electric furnace, and molten iron and titaniferous slag are obtained, wherein vanadium and iron are reduced to enter the molten iron while silicon and aluminum impurities and the sodium or sylvine additive form sodium aluminosilicate capable of dissolved in diluted acid under the high-temperature smelting condition, and the sodium aluminosilicate and titanium and calcium and magnesium impurities are left in the titaniferous slag; then silicon, aluminum and iron in the titaniferous slag are extracted by adopting a hydrometallurgy method on the titaniferous slag and serve as raw materials for preparing the inorganic polymer flocculant. According to the preparing method for the titaniferous inorganic flocculant, the sodium salt additive is added in the smelting process of the iron ore concentrate in the electric furnace, the acidolysis leaching rate of silicon and aluminum in the smelting slag is greatly increased, the raw materials are provided for preparing the inorganic flocculant, and the key technical purpose of impurity reduction of rich titanium of the titaniferous slag is achieved.

The invention provides low-odor ABS engineering plastic, which is characterized in that the ABS engineering plastic contains, by weight percentage, 60 to 94.5 percent of ABS resin, 5 to 37.5 percent of modifier, 0.1 to 0.5 percent of antioxidant, 0.1 to 0.5 percent of lubricant, 0.15 to 0.5 percent of sodium aluminosilicate, and 0.15 to 1.0 percent of castor oil zinc salt. The method for preparing the low-odor ABS engineering plastic comprises the following steps: weighing above materials according to a certain ratio, mixing uniformly in a high-speed mixer, and extruding and granulating in a double-screw extruder. The method can reduce the odor of general plastic and at the same time keep the original properties of the ABS engineering plastic.

The invention discloses a mold material for injection molding of an automobile bumper. The mold material is prepared from the following materials in parts by weight: 25 to 30 parts of polycarbonate, 35 to 40 parts of polyethylene terephthalate, 16 to 20 parts of polyurethane, 7 to 11 parts of polyacrylonitrile-based carbon fiber, 5 to 10 parts of nano aluminum oxide, 14 to 18 parts of silicon carbide, 3 to 8 parts of calcium stearate, 6 to 9 parts of pentaerythritol, 2 to 5 parts of trioctyl ester, 7 to 11 parts of molybdenum dioxide, 16 to 18 parts of montmorillonoid, 12 to 14 parts of sodium aluminosilicate, 3 to 8 parts of silicon rubber, 14 to 18 parts of polyvinyl acetate emulsion, 12 to 15 parts of titanium dioxide, 20 to 22 parts of a titanate coupling agent, 12 to 15 parts of an ethylene-vinyl acetate copolymer, 6 to 10 parts of glyceride and 4 to 7 parts of dibasic lead stearate. The mold material for the injection molding of the automobile bumper, disclosed by the invention, has a buffering effect, a firm structure and a good flame-retarding effect.

The invention discloses an active admixture, a preparation method and an application for the active admixture, and concrete, belonging to the technical field of building materials. The active admixture comprises the following components in parts by weight: 10-30 parts of Bayer process red mud, 5-15 parts of quicklime powder and 80-120 parts of limestone powder, wherein the water content of the Bayer process red mud is 15%-35%, and the mass content of aluminum oxide in the Bayer process red mud is 20%-40%. According to the invention, the Bayer process red mud and the limestone powder are used as main raw materials; the problem of difficult dehydration for the Bayer process red mud is solved by utilizing the principle of a violent reaction of quick lime and water; hydrated sodium aluminosilicate with high content and relatively good water solubility in the Bayer process red mud is utilized to react with the limestone powder to produce hydrated aluminosilicate; thus, the hydration activity of the active admixture can be improved; and the active admixture can completely replace fly ash to reduce the production cost of the building materials like the concrete.

The present invention discloses an evenly dispersed aluminum section production lubricant, and the evenly dispersed aluminum section production lubricant is obtained from the following parts by weight of raw materials: 2-4 parts of molybdenum disulfide, 1-2 parts of sodium molybdate, 0.5-0.9 part of alkyl phenol polyoxyethylene ether, 3-7 parts of rapeseed oil, 1-2 parts of choline, 3.5-5.5 parts of industrial white oil, 20-30 parts of modified graphite powder, 4-6 parts of colloidal graphite, 1-2 parts of aluminum dihydrogen phosphate, 8-16 parts of paraffin oil and 1-2 parts of sodium aluminosilicate. The evenly dispersed aluminum section production lubricant has good homogeneity and cohesion, can be repeatedly removable without damaging of a lubricating film, can work at high and low temperature environment, and ensures that lubricating parts in working conditions are lubricant, zero-resistant, anti-corrosion, scuffing, and the like, and the evenly dispersed aluminum section production lubricant can be applied to aluminum section extrusion machine lubrication, and can also be used on lubrication of parts of other fields.

The invention discloses a wear-resistant, heat insulation and waterproof building coating. The wear-resistant, heat insulation and waterproof building coating is characterized by being prepared from the following raw materials in parts by weight: 33-36 parts of water-soluble alkyd resin, 33-36 parts of an organic silicone resin emulsion, 1-2 parts of 1, 2-benzisothiazolin-3-one, 0.4-0.8 part of hydroxyethyl cellulose, 1-2 parts of sodium aluminosilicate, 1-3 parts of tert-butyl methacrylate, 0.5-1.0 part of fumed silica powder, 2-3 parts of silicon carbide powder, 1-3 parts of clay, 1-2 parts of dibutyl phthalate, 0.3-0.4 part of an organic silicon defoamer, 0.3-0.6 part of polyoxyethylene lauryl ether, 2-3 parts of diatomite, 2-4 parts of propanediol butyl ether, 7-9 parts of heat insulation slurry and 13-18 parts of deionized water. The coating disclosed by the invention is fast in drying, high in hardness of a paint film after curing, smooth, good in color and luster, very high in adhesion and good in wear resistance; the deionized water is adopted as a thinner, thereby having low cost and low toxicity and being green and environment-friendly; the added heat insulation slurry has an excellent heat insulation effect; and furthermore, the coating has excellent corrosion resistance, aging resistance and water resistance, is convenient to construct and is harmless to human bodies.

The invention relates to an acrylonitrile-butadiene-styrene ABS engineering plastic with an anion release function, which is characterized by comprising the following components in percentage by weight: 60-90% of ABS resin, 5-30% of modifier, 0.1-0.5% of antioxidant, 0.1-0.5% of lubricating agent, 10-20% of anion powder, 0.15-0.5% of sodium aluminosilicate and 0.15-1.0% of castor oil zinc salt. The invention further relates to a preparation method of the ABS engineering plastic with the anion release function. The original properties of the ABS engineering plastic can be maintained, the smell of common plastics is reduced, and released anions are beneficial to human bodies and environments.

The invention discloses a high-adsorbability composite material for sewage treatment. The high-adsorbability composite material comprises the following raw materials in parts by weight: 18 to 30 partsof polyacrylamide hydrogel, 6 to 12 parts of hirudin, 5 to 17 parts of glucomannan glue, 6 to 17 parts of sodium aluminosilicate, 4 to 10 parts of Curdlan powder, 2 to 5 parts of calcium phosphate, 1to 3 parts of L-lysine, 2 to 7 parts of lotus root powder, 1 to 5 parts of sophocarpidine, 3 to 6 parts of polymethylacrylic acid, 3 to 5 parts of modified waste water purifier activated carbon filter element powder and 60 to 90 parts of deionized water. The high-adsorbability composite material for sewage treatment has the advantages of high adsorption capacity, high selectivity and high efficiency, can capture various metal ions in a water body, has high removal rate on various metal ions in the heavy metal water and has treatment efficiency; furthermore, the treatment method is simple, andthe high-adsorbability composite material only needs to be thrown into the water during use.

The invention belongs to the technical field of zeolite molecular sieve synthesis and particularly relates to a method for preparing a low-silicon Na-A/X cocrystallization zeolite molecular sieve in a pure sodium aluminosilicate system. The method comprises the following two steps: preparing an activated silica source and synthesizing low-silicon Na-A/X cocrystallization zeolite. The method is characterized in that a potassium raw material is not used, and Na-A/X cocrystallization zeolite with low silicon and aluminum ratio is synthesized in the pure sodium aluminosilicate system. As the potassium raw material is not used, not only is the production cost is reduced, but also the bad effect of potassium ions left in the zeolite on the ion exchange performance is avoided. The silicon and aluminum ratio (SiO2/Al2O3) of the Na-A/X cocrystallization zeolite synthesized by the method is 2.0-2.2 and is lower than that of the reported A/X cocrystallization zeolite. With the adoption of the method, the proportion of zeolite A to zeolite X in the Na-A/X cocrystallization zeolite can be adjusted and changed through changing the synthesis conditions to adapt to the softening demands of hard water with different Ca2+ and Mg2+ contents in different areas.