81 results about "Potassium aluminate" patented technology

The present invention relates to cement compositions and their use in cementing operations. The cements comprise an aluminosilicate; a sodium aluminate, a calcium aluminate, a potassium aluminate, or a combination thereof; and water. In some cases the cement does not include Portland cement. The cement may be used in a subterranean formation having corrosive components therein, wherein the set cement sheath is resistant to degradation from the corrosive components within the subterranean formation.

The invention provides a cracking furnace tube for cracking petroleum hydrocarbon. The furnace tube contains active components for performing catalytic cracking reaction on the petroleum hydrocarbon and has catalytic cracking activity. The components of potassium aluminate, calcium vanadate, alkaline earth metal, transition metal oxide, silicon-aluminum zeolite and the like which have catalytic activities, and/or the components of alkali metal and the like with coking resistance, are added or adhered to the inner side or the surface of the tube, or are added directly in the process of manufacturing the tube by the methods of coating, infiltration, sintering, plasma spraying and the like so as to obtain the tube which is provided with an inner surface coating, or contains the components with catalytic activities in the whole tube from the inside to the outside, and/or contains the components with coking resistance. Using the furnace tube, the prior ethene device is not necessary to be changed at all, only the furnace tube which has the catalytic function or the furnace tube which is in the cracking furnace is processed, thus the industrialization can be achieved quite easily in theprior cracking device.

The invention relates to a high-alumina glass frosting powder and a use method thereof. The high-aluminum glass frosting powder is prepared from the following components in percentage by mass: 30 to 35 percent of ammonium fluoride, 15 to 20 percent of potassium bifluoride, 15 to 25 percent of sulfamic acid, 8 to 10 percent of precipitated barium sulfate, 5 to 8 percent of magnesium fluoride, 5 to8 percent of sodium fluosilicate, 8 to 10 percent of potassium fluoroaluminate, 2 to 3 percent of starch and 0.1 to 0.5 percent of carboxymethyl cellulose. Sulfamic acid is used as an acidity regulator; the formula is further optimized and limited; the problems of corrosivity, safety, environmental friendliness and the like caused by traditional inorganic strong acid curing are avoided; in addition, the frosting liquid cured by adding water has the advantages of proper acidity and uniform and stable system, the surface roughness Ra of the high-aluminum glass is controlled between 0.1 [mu]m and2.0 [mu]m, the effective frosting and control effects of the high-aluminum glass are realized, and the high-alumina glass frosting powder has wide applicability.

The invention relates to a method for extracting chromium from chromite by pressure leaching, which comprises the following steps: mixing chromite and/or pretreated chromite with a potassium hydroxide water solution, a potassium carbonate water solution and a potassium metaaluminate water solution to obtain an original slurry; adding the original slurry into a high-pressure autoclave, introducing oxidizing gas, and carrying out pressure leaching oxidizing reaction to obtain a reaction slurry; and carrying out solid-liquid separation to respectively obtain iron-rich tailings and a solution containing potassium chromate, potassium hydroxide, potassium carbonate, potassium aluminate and other water-soluble impurity components. The method has the advantages of greatly lower reaction temperature and low energy consumption, and effectively lowers the production cost, and the maximum chromium extraction yield can reach 97% above. Besides, the volume of the high-pressure autoclave can be 200L, and the reaction medium has the same proportioning as the industrial circulating liquor, so that the process is very close to the industrial process and can easily implement industrialization.

The invention provides a sagger which is prepared from the following raw materials in percentage by weight: 65-87 percent of mullite, 5-10 percent of corundum, 3-7 percent of activated alpha-aluminumoxide and 5-10 percent of synthetic potassium aluminate; and the synthetic potassium aluminate is prepared from the following chemical components in percentage by weight: 92.0-93.0 percent of Al2O3 and 7.0-8.0 percent of K2O. The sagger has stronger thermal shock resistance and erosion resistance and can be used for calcining a ternary anode material. The invention also provides a preparation method of the sagger.

It is undoubtedly a good way to kill two birds with one stone by using waste aluminum cans to produce new energy hydrogen and environmental protection products potassium alum. Hydrogen has many uses. Hydrogen burns in oxygen and releases a lot of heat. The temperature of its flame-oxygen flame reaches 3000°C, which can be used for welding or cutting metals. As a fuel, hydrogen has the characteristics of abundant resources, high combustion calorific value and less pollution. Potassium alum plays an important role in water purification, paper sizing, paint printing and dyeing, lake pigment pharmaceuticals, paint making, tanning, fiberboard processing, as well as rubber and metallurgy, colored glass, food industry, agriculture, etc. . The invention uses waste aluminum cans as raw materials, produces hydrogen through potassium hydroxide solution, further neutralizes potassium aluminate solution with sulfuric acid, and obtains high-quality potassium alum through crystallization, filtration, washing and centrifugal dehydration. The invention not only eliminates pollution, but also can achieve the purpose of turning waste into wealth and utilizing waste, and is a good method that kills two birds with one stone.

The invention provides a porcelain formula and a manufacturing process thereof. Soft kaolin, flint clay, potassium feldspar and large ball mud are used as raw materials to prepare a matrix material; silicon dioxide, potassium fluoroaluminate, cerium dioxide, yttrium oxide, aluminum borate whiskers, nano-zinc oxide, cerium-graphene nano-particles and large ball mud superfine powder are used as rawmaterials to prepare glaze, the raw materials of the glaze are properly matched in thickness, the compactness of a glaze layer is improved, the apparent porosity is low, contamination is not likely tohappen, the wear resistance is good, and the bactericidal effect is achieved. The matrix material and the glaze material generate light interaction, so that the porcelain has relatively high whiteness and glossiness, and the attractiveness is greatly improved.

The invention relates to the field of beneficiation and metallurgy with a function of comprehensively recovering valuable components such as vanadium, aluminum, potassium and silicon from the vanadium-containing siliceous shale as a raw material. The process comprises steps as follows: the low-grade vanadium-containing siliceous shale is taken as the raw material, firstly, the vanadium-containingsiliceous shale is desiliconized with a flotation method, vanadium ore concentrate is uniformly mixed with excessive limestone and sodium carbonate, a mixture is subjected to high-temperature roastingin a rotary kiln, and products such as potassium aluminate, potassium ferrite, calcium metavanadate, calcium orthosilicate, carbon dioxide and the like are obtained; the sintered products are dissolved in a dilute alkaline solution, after a dissolution solution is desiliconized and purified, carbon dioxide gas produced by the rotary kiln is introduced into a closed container for carbonization reaction, Al(OH)3 precipitates are separated out, a dealumination solution is subjected to hydrolytic precipitation under the acidic condition, coarse vanadium is obtained and dissolved with alkali, ammonium chloride is added, ammonium metavanadate is obtained, a final solution is a potassium-rich and sodium-rich solution and evaporated step by step, and potash and soda are obtained. According to theinvention, the problem of environmental pollution produced by stockpiling of stone coal leaching residues is solved completely.

The embodiment of the invention discloses a polyurethane gloss white finish for furniture, which comprises a main agent, a curing agent and a diluent, wherein the main agent comprises synthetic fatty acid resin, n-butyl acetate, a defoaming agent, a flatting agent and white paste; the white paste comprises synthetic fatty acid resin, n-butyl acetate, a dispersing agent, titanium dioxide, and nanometer silicon potassium aluminate powder; the curing agent comprises toluene diisocyanate trimer, hexamethylene diisocyanate trimer, and n-butyl acetate; the diluent comprises n-butyl acetate, dimethylbenzene and propylene glycol monomethyl ether acetate. According to the polyurethane gloss white finish for the furniture, the nanometer silicon potassium aluminate powder is utilized, so that the sand mark covering capability and the fullness of a finish film can be improved, and the aims of reducing dark bubbles and improving a flatting effect are achieved.

The invention relates to wear-resistant antibacterial ceramic and a processing method thereof. The processing method includes the steps that a body material is fired for the first time to form a plainbody, then glaze is applied to the two faces of the plain body to form glaze layers, and firing is conducted for the second time, and then the wear-resistant antibacterial ceramic is obtained, wherein the body material is made of raw materials such as sodium bentonite, coke gemstone, pyrophyllite, dolomite, and the like, the glaze is prepared from silicon dioxide, potassium fluoroaluminate, boronoxide, barium oxide, yttrium oxide, titanium-silicon co-doped graphene, large ball mud and other raw materials. Wherein the second firing comprises three-stage heating and heat preservation and three-stage cooling, each heating and heat preservation is sequentially carried out in an air atmosphere, a nitrogen atmosphere and a hydrogen atmosphere, and the three-stage cooling is natural cooling, rapid cooling and natural cooling. The obtained ceramic product has excellent antibacterial performance and wear resistance, and meets the high-quality requirements of ceramics.

The invention provides a smelting process of a carbon nanotube reinforced aluminum matrix composite. The smelting process comprises the following steps: carrying out ball-milling mixing dispersing ona smelting assistant, a carbon nanotube and aluminum/aluminum alloy powder in a planetary ball mill to obtain mixed powder; putting the mixed powder into a mold for cold pressing to obtain a carbon nanotube-aluminum/aluminum alloy precast block; and pressing the carbon nanotube-aluminum/aluminum alloy precast block into molten aluminum through a bell jar, carrying out smelting under stirring, carrying out standing, and then carrying out casting molding, wherein the smelting assistant is any one of potassium boroaluminate (KBF4), potassium titanium fluoroaluminate (K2TiF6), potassium fluoroaluminate (K3AlF6) or sodium fluoroaluminate (Na3AlF6). According to the smelting process of the carbon nanotube reinforced aluminum matrix composite, the carbon nanotube reinforced aluminum matrix composite is prepared through the smelting process, the efficient dispersion of the carbon nanotube in the smelting process is realized, meanwhile, traditional metal smelting equipment can be used, and thusthe smelting process has the advantages of being simple, small in investment, high in product strength and the like and is suitable for industrial mass production.

The invention discloses a method for producing cement and cement kiln dust simultaneously through potassium feldspar. The method comprises the following steps that limestone, sandstone, potassium feldspar, iron powder and a fluorite additive are crushed and then mixed, wherein the mixture comprises, by weight, 72-77% of limestone, 17-20% of potassium feldspar, 2-6% of sandstone, 2-4% of iron ore and 1-2% of fluorite additive, and the sum of the percentages of all the components is 100%; the mixed raw materials are ground into raw materials with the granularity of 0.08-0.10 mm; the raw materials are evenly mixed and then fed into a kiln system, high-sulphur coal is adopted as fuel, and preheating, decomposition, calcination and cooling are carried out to obtain cement clinker; in the calcination process, K2O in the potassium feldspar is volatilized and compounded with SO2 and CO2 in high-sulfur coal soot to form K2SO4 and K2CO3 at first and then form potassium metasilicate and potassium aluminate to be concentrated in a kiln along with soot; kiln dust containing potassium is recycled through an efficient recycling device and processed into potassic fertilizer.

The invention provides a potassium aluminosilicate nanogel precursor admixture and application thereof in a low-calcium-system geopolymer, belonging to the technical field of geopolymer admixtures. The potassium aluminosilicate nanogel precursor external admixture provided by the invention has a structure of a high-activity potassium aluminosilicate short-chain structure, is a precursor of the low-calcium-system geopolymer, and comprises the following chemical components: K2O, SiO2 and Al2O3, wherein molar ratio of K to Si is 1.0-4.0, and a molar ratio of Al to Si is 0.25-1.5. When the potassium aluminosilicate nanogel precursor admixture provided by the invention is added into a low-calcium-system geopolymer matrix material, the hydration process of the low-calcium-system geopolymer such as metakaolin can be effectively optimized, internal reaction is balanced, and a pore structure is improved; and thus, the mechanical properties of the material are improved, the problems of harsh maintenance conditions, non-uniform hydration reaction and substandard mechanical properties of the low-calcium-system geopolymer are effectively solved, and a feasible scheme is provided for application of the low-calcium-system geopolymer.

The invention discloses a wear-resistant ceramic material as well as a preparation method and application thereof. The wear-resistant ceramic material is prepared from the following raw materials in parts by weight: 30 to 55 parts of nylon fiber, 10 to 25 parts of ceramic micropowder, 11 to 17 parts of dimethylaminoisopropanol, 14 to 18 parts of trisodium phosphate, 8 to 16 parts of cyanuric chloride, 6 to 9 parts of mordenite powder, 4 to 9 parts of isopropyl titanate and 2 to 6 parts of potassium aluminate. The wear-resistant ceramic material disclosed by the invention is prepared from nylonfiber, ceramic micropowder, dimethylaminoisopropanol, trisodium phosphate, cyanuric chloride, mordenite powder, isopropyl titanate and potassium aluminate, and has the advantages of good wear resistance, excellent mechanical properties and corrosion resistance, simple preparation process, and easiness in industrial production.

The invention relates to a hydrocarbon reforming catalyst and a preparation method thereof, in particular to a hydrocarbon reforming catalyst for directly reducing iron with a gas group and a preparation method. The catalyst comprises a main active component, a main anti-carbon agent, main auxiliaries, an accelerant and a binder; the active component is nickel, the active component nickel exists in the form of NiO, the anti-carbon agent is a silicon potassium aluminate double salt, the main auxiliaries are MgO and CaO, the accelerant is a rare earth element La or Ce, and the binder is pure calcium aluminate cement. The preparing method mainly includes the following three steps of active material preparing, material mixing and forming and treatment after forming. The hydrocarbon reforming catalyst for directly reducing iron with the gas group has the advantages of being high in conversion rate and strength, good in activity, heat stability and anti-carbon performance and the like.

The invention relates to an efficient magnesium-containing aluminum alloy refining and slagging dual-purpose flux and a preparation method thereof, and belongs to the field of alloy smelting. The fluxcomprises the following components of, in percentage by weight, 30%-55% of magnesium chloride, 10%-45% of potassium chloride, 1%-5% of potassium feldspar, 0%-20% of calcium fluoride and 2%-10% of potassium fluoroaluminate. The flux preparation process comprises the following steps of (1), fully mixing magnesium chloride, potassium chloride, potassium fluoroaluminate, calcium fluoride and other salts which are dried at 240-300 DEG C for 3-5 hours, melting in a resistance furnace, heating to 650-750 DEG C, keeping the temperature, and stirring for 10-30 minutes to obtain a uniform salt melt; (2), pouring the salt melt into a mold for cooling, and solidifying into a blocky flux; and (3), crushing the blocky flux into particles with the average particle size of about 0.5 cm, and fully mixingthe particles with dry potassium feldspar to obtain the magnesium-containing aluminum alloy melt refining and slagging flux. The magnesium-containing aluminum alloy flux does not contain sodium salt,has refining and slagging effects, and is an ideal flux for magnesium-containing aluminum alloy.

The invention belongs to the field of environmental protection, and particularly relates to a healthy multifunctional indoor purification material and a preparation method thereof. The material mainly has the effects of sterilizing, killing viruses, killing mites, and removing formaldehyde, benzene series, ammonia and the like, and is prepared from graphene, modified bamboo charcoal fibers, nano zinc oxide whiskers, sodium hypochlorite, potassium metaaluminate, nano titanate, nano silver, sodium silicate, wormwood, cacumen biotae and an additive. The preparation method comprises the following steps: sequentially adding the additive, the potassium metaaluminate and the sodium hypochlorite into water for fully dissolving; then, adding the graphene, nano zinc oxide whiskers, nano silver and nano titanate in sequence, and carrying ouit ultrasonic dispersion for 6-9 min; then adding the modified bamboo charcoal fibers and carrying out ultrasonic dispersion for 10-15 minutes; then adding wormwood and cacumen biotae, and continuously performing ultrasonic dispersion for 5-9 minutes; and finally, adding sodium silicate, fully stirring to uniformly mix, and heating in a vacuum drying oven at 70-90 DEG C for 45-80 minutes to obtain the material.