46 results about "Nepheline" patented technology

The invention discloses a ceramic rock plate with a decorative effect and a production process thereof, and belongs to the technical field of ceramics. The rock plate is composed of a green body layer, a ground glaze layer, a cover glaze layer and an ink jet pattern layer, and after firing, a micro-nano rough and low-surface-energy synergistic protection layer is formed through oxygen-nitrogen plasma activation, a hydrothermal reaction of aluminum salt and an ammonia source compound, high-temperature calcination and silane derivative dipping and curing. The green body takes wollastonite, quartz sand and the like as raw materials, and the ground glaze and the cover glaze adopt a feldspar-quartz-nepheline system; after firing, performing plasma treatment and hydrothermal treatment to generate needle-shaped aluminum oxide, and introducing a silane derivative to realize double functions of super-hydrophobicity and wear resistance. Compared with the prior art, the anti-fouling and wear-resistant coating reaches the national standard 5 level, the process is simple, and the coating can be directly connected to an existing production line and is suitable for high-end wall floor decoration.

This invention provides a method for activating and extracting potassium from potassium feldspar, the method comprising the following steps: (1) ball milling potassium feldspar raw material to obtain pre-activated potassium feldspar powder; the pre-activated potassium feldspar powder is in a near-amorphous state; (2) mixing the pre-activated potassium feldspar powder with an alkaline solution and performing a stirring transformation reaction, followed by a first solid-liquid separation to obtain a transformed solid product; the Si / K molar ratio of the main phase of the transformed solid product does not exceed 2.5; the phase composition of the transformed solid product includes garnet and / or nepheline; (3) mixing the transformed solid product with an acid solution and performing a second solid-liquid separation to obtain a potassium-rich leachate. This invention utilizes a stirring transformation reaction with a mixed alkaline solution to restructure potassium feldspar minerals, increasing the reactivity of potassium, and then dissolving potassium with acid to ultimately obtain a potassium-rich leachate, which is beneficial for further recycling.

The present application relates to zirconium-free and titanium-free quartz-based ceramic tile underglaze, and a preparation method of the ceramic tile using the underglaze. The zirconium-free and titanium-free quartz-based ceramic tile underglaze comprises, by weight: 5-8 parts of talc, 6-8 parts of wollastonite, 10-20 parts of potassium feldspar, 0-3 parts of calcined kaolin, 8-10 parts of kaolin, 35-40 parts of nepheline syenite, and 18-22 parts of high-purity high-white quartz powder. The chemical composition of the underglaze comprises, by weight percentage: 2.07-3.87% of LOI, 62.64-64.25% of SiO2, 18.47-19.34% of Al2O3, 0.10-0.32% of Fe2O3, 2.67-4.75% of CaO, 2.05-2.38% of MgO, 2.07-2.15% of K2O, and 5.02-7.17% of Na2O. The present application provides a zirconium-free and titanium-free quartz-based ceramic tile underglaze with low cost, wide firing range, uniform color development, white degree of 66-72° after firing, and glossiness of 4-7°.

The invention relates to the field of architectural ceramics, and discloses light-transmitting powder, a gradually-changed light-transmitting ceramic tile and a preparation method of the gradually-changed light-transmitting ceramic tile. The light-transmitting powder comprises the following raw materials in parts by weight: 50-70 parts of nepheline syenite, 10-15 parts of superfine quartz, 10-20 parts of kaolin, 3-8 parts of barium carbonate, 5-10 parts of wollastonite, 3-5 parts of yttrium aluminum garnet and 2-4 parts of magnesium aluminate spinel. By adopting the formula, the light-transmitting green body which is high in light transmittance, stable in light transmittance and uniform in light transmittance can be prepared by compounding multiple components, and a good foundation is provided for preparing a ceramic tile with full-transparent jade texture.

The present invention relates to a coating composition that provides high resistance to dirt, friction and polishing, due to the presence of mineral fillers and polymeric dispersions that promote resistance to polishing and meet wet abrasion resistance, said composition comprising: (a) at least one mineral filler selected from nepheline syenite, natural diatomite or a mixture thereof; (b) at least one silica-based matting agent; (c) at least one non-ionic aqueous emulsion selected from paraffin wax and high-density polyethylene wax or a mixture thereof; and (d) at least one additional component selected from the group consisting of solvent, dispersing agent, binding polymer and mixtures thereof. The present invention also relates to the use of the composition for the preparation of a washable matte acrylic paint product and matte acrylic paints containing the composition as claimed herein.

The application discloses a kind of ceramic rock plate with decorative effect and production process thereof, belong to ceramic technical field.The rock plate is composed of body layer, bottom glaze layer, face glaze layer and inkjet pattern layer, after firing, through oxygen nitrogen plasma activation, aluminum salt and ammonia source compound hydrothermal reaction, high temperature calcination and silane derivative impregnation solidification, form micro-nano rough and low surface energy synergistic protective layer.Body is with wollastonite, quartz sand and the like as raw material, bottom glaze and face glaze adopt feldspar-quartz-nepheline system;After firing, after plasma treatment and hydrothermal generation acicular alumina, then introduce silane derivative to realize super-hydrophobic and wear-resistant double function.Compared with prior art, the application is anti-fouling, wear-resistant, and reaches national standard 5 level, process is simple, can be directly connected to existing production line, suitable for high-end wall and floor decoration.

The present application relates to dunhuang murals stone green ceramic rock plate and manufacturing method, including: (1) pressing blank; (2) low zirconium series super white cosmetic clay: cosmetic clay is composed according to weight part: washed highland clay 6, black mud 3, glass frit 18, diopside 2, quartz powder 2, barium-based frit 4, ultrafine quartz powder 12, zirconium white frit 15, calcined alumina powder 6, zirconium silicate 3, potassium feldspar 10, nepheline powder 7, ball clay 10, calcined talc 2, sodium tripolyphosphate 0.6, sodium carboxymethyl cellulose 0.3; (3) inkjet printing: color ink is combined by cyan, blue, brown, wrapped yellow, red and black; (4) promote green glaze: promote green glaze formula is composed according to weight part: high-zinc low-temperature frit 32, fused quartz 28, quartz powder 17, white carbon black 14, highland clay 9; (5) apply protective glaze: according to the selection of product surface gloss and texture of green series product development, it can be dry particle glaze, matt or bright protective glaze; (6) high temperature sintering.

This invention discloses a protective glaze, an imitation stone ceramic tile, and a method for preparing the same, relating to the field of ceramic tile preparation. The protective glaze, by weight, comprises the following components: 8-10 parts potassium feldspar, 10-15 parts first frit, 15-22 parts calcined kaolin, 12-17 parts nepheline, 6-9 parts calcined zinc oxide, 14-17 parts quartz, 12-20 parts corundum, 3-5 parts calcined talc, and 14-18 parts zirconium silicate. When combined with a deep-inking process, the protective glaze can produce a glaze surface with deep concave textures, enhancing the stone-like effect.

The invention discloses a fluxing agent for replacing fluorite in iron and steel smelting and a manufacturing method thereof, and belongs to the field of iron and steel smelting. The fluxing agent for replacing fluorite is prepared by taking nepheline syenite containing various silicate minerals as a main material, crushing, adding a mixture taking bentonite and starch as a binder, adding water, uniformly mixing, then pressing into pellets with the diameter of 30-40mm by a machine, and airing and drying for use. Wherein the binder accounts for 3-5% by weight, is the same as fluorite, has the effects of reducing the melting point and apparent viscosity of the slag, improving the fluidity of the slag and reducing the iron loss of the slag, and can increase the alkalinity of molten steel and improve the quality of the molten steel. The ingredients overcome the defects of fluorite in iron and steel smelting, corrosion to a furnace lining of a melting furnace can be reduced, the health of workers is not harmed, pollution of slag to the environment can be reduced, and the post-treatment process of the slag is simplified, so that the treatment cost of the slag is reduced.

The invention provides transparent microcrystalline glass and a preparation method thereof, and belongs to the technical field of glass preparation. The transparent microcrystalline glass comprises a primary crystal phase, a secondary crystal phase and a residual glass phase, the primary crystal phase comprises sodium nepheline and eucryptite, and the secondary crystal phase comprises at least one of zirconium oxide and beta quartz solid solution; the total crystallinity R is 40-75 wt%; the refractive index improvement coefficient k satisfies 0.05 < = k < = 0.20. The crystal phase proportion of the crystal phase and the glass phase is limited, so that the average grain size (less than or equal to 50 nm) is controlled, and the light scattering performance is reduced; by introducing a refractive index regulator and providing a refractive index improvement coefficient (k is more than or equal to 0.05 and less than or equal to 0.2), the refractive index difference between a crystal phase and a glass phase is reduced, and the problem of poor optical performance of the microcrystalline glass is improved.

The invention discloses a lead-free environment-friendly white oily cracked ceramic glaze and an application method thereof. The ceramic glaze is prepared from the following raw materials in percentage by weight: 28 to 35 weight percent of albite, 5 to 8 weight percent of Suzhou kaolin, 9 to 19 weight percent of quartz, 4 to 10 weight percent of calcite, 5 to 10 weight percent of barium carbonate, 18 to 25 weight percent of talc, 0.5 to 16 weight percent of sodium carbonate, 1.4 to 2 weight percent of ZnO and 2 to 6 weight percent of nepheline syenite. The application method comprises the following steps: step 1, preparing ceramic glaze powder; 2, mixing and ball-milling are carried out; step 3, sieving the glaze slip with meshes, and aging to obtain glaze; and 4, applying the glaze to the surface of the green body, drying, and sintering in a reducing atmosphere to obtain a ceramic glaze decoration product. The ceramic glaze has the advantages of high whiteness, high hardness and unique decorative effect, the preparation process is simple, the energy consumption is lower, and the product does not contain heavy metals such as lead and meets the green and environment-friendly requirements.

This invention discloses a frit, comprising, by weight, the following raw materials: 8-10 parts albite, 5-10 parts strontium carbonate, 5-15 parts alumina, 1-6 parts corundum, 3-6 parts borax, 10-15 parts diopside, 5-10 parts clay, 10-15 parts fluorite, 15-20 parts quartz, 4-10 parts dolomite, and 1-2 parts nepheline. This frit possesses advantages such as strong water retention and good screen-removal properties. Glazes prepared using this frit can solve problems encountered in the production of marble ceramic tiles using large-format screen printing, including easy adhesion to the screen, easy detachment, poor water retention, uneven printing, and pattern layer adhesion caused by large screen size and slow screen lifting.

The invention provides a method for recovering nepheline in lithium feldspar tailings and a molecular sieve preparation method and equipment, and relates to the field of tailings recovery. The method for recovering nepheline in the lithium feldspar tailings comprises the following steps: S11, grinding, screening and calcining the lithium feldspar tailings in sequence; and S12, slurrying the calcined material, dispersing the material through an ultrasonic separation system, then adding a flocculating agent, adding the mixed slurry into a flexible recovery system, adding a flotation reagent, agglomerating a hydrophilic material, and settling and separating a hydrophobic material. According to the method for recycling the nepheline in the lithium feldspar tailings and the molecular sieve preparation method, the nepheline in the lithium feldspar tailings is recycled through a soft natural stripping process, the extraction rate of the nepheline is increased, then the nepheline is further purified and treated, the nepheline forms molecular sieve crystal mush, and molecular sieve particles are obtained through the following steps of roasting and curing and the like. Therefore, full utilization of the lithium tailings is realized, and waste utilization is realized.

This invention discloses a dark-colored velvet-textured ceramic slab, a base glaze, and its preparation method. The dark-colored velvet-textured base glaze is prepared by ball milling according to the following mass ratio of material: water: carboxymethyl cellulose: sodium tripolyphosphate: 100:36:(0.1-0.2):(0.3-0.5). The material of the velvet-textured base glaze is prepared from the following components in parts by weight: 3-8 parts wollastonite, 5-10 parts dolomite, 10-15 parts strontium carbonate, 2-5 parts calcined talc, 30-40 parts potassium feldspar, 5-10 parts nepheline, 5-10 parts calcined kaolin, 5-15 parts quartz, 1-5 parts white corundum, 3-8 parts calcined zinc oxide, and 10-15 parts matte transparent frit. The matte transparent frit includes the following components in the following mass percentage: SiO2. The composition is 55-60%, Al₂O₃ 12-15%, K₂O 2-3%, Na₂O 3-4%, CaO 20-25%, and the calcination vector of the matte transparent frit is 1%-5%. This solution improves the light transmittance of the glaze layer, enhances the transparency, and maintains a uniform and dispersed surface gloss without crystallization, resulting in a glaze surface with a velvety soft feel.

The application provides a microcrystalline glass, wherein a crystal phase in the microcrystalline glass comprises a sodium-containing nepheline phase, a forsterite crystal phase and a TiO2 crystal phase, wherein the sodium-containing nepheline phase comprises one or more of sodium nepheline and a silica solid solution thereof, a sodium-potassium solid solution nepheline and a silica solid solution thereof; and the TiO2 crystal phase comprises at least one of an anatase phase and a rutile phase. The microcrystalline glass containing the above crystal phase has high light transmittance, can be efficiently ion exchanged to obtain a strengthened microcrystalline glass containing a hexagonal potassium nepheline crystal phase on the surface, and has high hardness and good drop resistance, and can meet the application requirements of large-size, ultrathin terminal glass cover plates and the like. The application also provides a strengthened microcrystalline glass obtained by strengthening the microcrystalline glass, and a terminal adopting the strengthened microcrystalline glass.

The application relates to the technical field of building ceramics, and discloses a radiation refrigeration ceramic tile and a preparation method thereof. The radiation refrigeration ceramic tile comprises a bottom glaze layer and a reflective heat insulation surface glaze layer. Raw materials of the bottom glaze layer comprise kaolin, calcined kaolin, porous alumina powder, quartz, calcined talc, nepheline, potassium feldspar, sodium feldspar, trivalent europium ion doped magnesium aluminate spinel powder and zirconium silicate. The purpose of the bottom glaze layer formula design is to design a bottom glaze layer with an expansion coefficient close to that of a conventional qualified ceramic tile, and meanwhile, porous alumina and trivalent europium ion doped magnesium aluminate spinel powder are introduced, so that the expansion coefficient of the bottom glaze layer is consistent with that of a conventional produced body and the reflective heat insulation surface glaze layer, the structure of the porous alumina is not damaged, and the problem that the reflectivity and emissivity of the glaze are difficult to effectively improve when the expansion coefficients of the bottom glaze layer, the body and the surface glaze layer are inconsistent is solved. + The trivalent europium ion doped magnesium aluminate spinel powder ensures that the expansion coefficient of the bottom glaze layer is consistent with that of the conventional produced body and the reflective heat insulation surface glaze layer, the structure of the porous alumina is not damaged, and the problem that the reflectivity and emissivity of the glaze are difficult to effectively improve when the expansion coefficients of the bottom glaze layer, the body and the surface glaze layer are inconsistent is solved.

The invention belongs to the technical field of protective coatings, and particularly discloses a cold and hot alternating self-adaptive coating and a preparation method thereof.The preparation method comprises the steps that a modified fluororubber matrix, directional flaky filler and a thermal expansion regulating agent are stirred at a high speed for 15-20 min according to the weight parts, ultrasonic dispersion is conducted for 8-12 min, and the coating is obtained; wherein the modified fluororubber matrix is selected from organic silicon modified fluororubber; the oriented flaky filler is one or more of talcum powder, vermiculite and mica powder with the thickness-diameter ratio larger than or equal to 50: 1; the thermal expansion regulating agent is one or more of cordierite, zirconolite and beta-eucryptite. The coating is formed by compounding the modified fluororubber, the oriented flaky filler and the thermal expansion regulating agent, and the elongation at break gt of the fluororubber coating is achieved through the synergistic effect of the three; the elastic retention rate is gt after a cold and hot cycle effect at 400 DEG C / 1h; and the interface adhesive force of the coating is increased to be greater than or equal to 5 MPa, the coating is free of cracks after 300 times of cold and hot cycles, the integrity of the coating is kept, and a long-life and high-reliability solution is provided for extreme temperature cycle scenes.

The present application relates to a method for separating and purifying desilication products from red mud, drying the red mud, coarsely grinding it into powder, passing it through a 325 mesh vibrating screen, and performing multi-stage gravity separation on the undersize product until a gravity concentrate with a density less than 2.2 g / cm 3 is obtained, removing impurities from the obtained gravity concentrate with dilute alkali, and then performing solid-liquid separation, collecting the solid precipitate, and performing washing and drying treatment on the solid precipitate to obtain a desilication product purification product. The present application separates and purifies desilication products from red mud using a simple method without the need for high temperature and high pressure, etc., thereby maximizing the preservation of the original appearance and physicochemical properties of sodalite and calcium nepheline desilication products, which can be used as original samples for mineralogical analysis, elemental composition analysis, and microscopic morphology analysis of desilication products contained in red mud. The desilication products separated and purified by the present application have high purity, low investment and operating costs, and can be applied on a large scale in industry.

The application discloses a method for high-temperature and high-pressure collaborative treatment of red mud, coal or coal gangue, and belongs to the field of resource utilization of red mud, coal or coal gangue. The method comprises the following steps: mixing red mud, coal or coal gangue and water, and then placing the mixture into a high-temperature and high-pressure device; introducing an oxygen-containing gas or adding an oxidant; under the high-temperature and high-pressure conditions, mineral decomposition and reconstruction of the red mud and the coal or coal gangue occur, acidic substances produced by oxidation of sulfide minerals and carbon-based minerals in the coal or coal gangue and alkaline substances in the red mud are subjected to neutralization reaction; and after desalination of reaction products of the red mud and the coal or coal gangue, the reaction products are used as ecological matrix soil. The method disclosed by the application accelerates decomposition of alkaline minerals such as nepheline in the red mud and release of alkali under high-temperature and high-pressure conditions, and accelerates oxidation of carbon-based minerals and sulfide minerals in the coal or coal gangue and transformation of humus and humic acid, neutralizes alkaline substances and acidic substances produced in the reaction, realizes rapid dealkalization of the red mud, controls the degree of oxidation of the carbon-based minerals, and improves the content of organic matter in the reaction products, so that full resource utilization and ecological utilization of the red mud, the coal or the coal gangue are realized.

This invention belongs to the field of architectural ceramics, specifically disclosing a ceramic tile with a simulated dry granular surface effect and its preparation method. The ceramic tile comprises, from bottom to top, a body, a glaze layer, a colored ink layer, a matte micro-engraved ink layer, and a protective glaze layer. The raw materials for preparing the glaze layer, by weight, include: 10-15 parts potassium feldspar, 20-35 parts sodium feldspar, 10-20 parts nepheline, 5-10 parts washed clay, 3-10 parts calcined kaolin, 2-10 parts quartz, 3-10 parts alumina, 8-15 parts barium carbonate, 4-10 parts wollastonite, 0-5 parts calcined talc, 0-4 parts calcined zinc oxide, and 5-15 parts zirconium silicate. The raw materials for preparing the matte micro-engraved ink layer, by weight, include: 40-50 parts inorganic materials, 3-8 parts dispersant, and 40-60 parts ester solvent. The inorganic materials consist of bismuth vanadate and glass powder, with the initial melting temperature of the glass powder being 1130-1220℃.

The application relates to the technical field of glass ceramics, and discloses a tri-clinic nepheline glass ceramic as well as a preparation method and application thereof. The glass ceramic comprises the following components in terms of molar percentage: 43-58 mol% SiO2, 15-27 mol% Al2O3, 20-30 mol% Na2O, 0-10 mol% Li2O, 0-10 mol% K2O, 0-5 mol% P2O5 and 0-3 mol% ZrO2. The glass ceramic provided by the application has a crystallinity of more than 80%, a crystal size of less than 90 nm, an average transmittance of more than 90% in a visible light band, and a crystal phase composition containing only a main crystal phase tri-clinic nepheline phase or containing a secondary crystal phase nepheline phase and a phosphate phase. The reduction or removal of the phosphate phase in the crystal phase improves the chemical stability of the glass ceramic and enables chemical strengthening.

The application discloses a kind of multi-stage nepheline concentrate powder production methods, comprising: step 1: nepheline raw ore is crushed, washing, middle crushing, first screening classification, fine crushing, obtains nepheline powder and slurry I;Step 2: nepheline powder is ground, second screening classification, first hydrocyclone classification, obtain coarse-grained ore pulp and argillaceous ore pulp;Step 3: coarse-grained ore pulp is obtained by coarse-grained wet classification magnetic separation, coarse concentrate I, coarse-grained tailings;Argillaceous ore pulp is obtained by second hydrocyclone classification, fine-grained wet classification magnetic separation, coarse concentrate II, slurry II and fine-grained tailings;Step 4: coarse concentrate I is concentrated, dried, dry magnetic separation classification, ball milling, wind classification, obtains first grade nepheline concentrate and second grade nepheline concentrate;Coarse concentrate II is dehydrated, dried, obtains third grade nepheline concentrate.The comprehensive second hydrocyclone classification, wet magnetic separation, dry magnetic separation, multi-scale grinding, can simultaneously carry out the production of three high-quality nepheline concentrate powder.

The utility model discloses a deep processing magnetic separation grinding classification system, which relates to the technical field of ore processing and comprises rough concentrate, a dryer and a four-section dry magnetic separator, the dryer is arranged on the right side of the four-section dry magnetic separator, and a feed hopper is arranged at the top end of the four-section dry magnetic separator. The four-section dry magnetic separator is provided with four sets of discharging ports, rough concentrate passes through the interior of the drying machine through a feeding belt, the left end of the feeding belt is arranged on the upper side of a feeding hopper, a first conveying belt and a second conveying belt are arranged on the lower side of the discharging port in the lower end, a third conveying belt is arranged on the lower side of the discharging port in the left side, and a fourth conveying belt is arranged on the lower side of the discharging port in the right side. According to the system, magnetic tailings, first-stage nepheline mineral powder and second-stage nepheline mineral powder are separated through four sections of magnetic separation frequency bands of the four-section dry magnetic separator, and the first-stage nepheline mineral powder is matched with the first-stage wind power classifier through the first-stage ball mill to obtain first nepheline concentrate; and the second-stage nepheline ore powder passes through a second-stage ball mill and is matched with a second-stage wind power classifier to obtain second nepheline concentrate.

The invention relates to the field of tempered glass, and particularly discloses anti-dazzle high aluminosilicate microcrystalline glass containing a nano nepheline phase as well as a preparation method and application of the anti-dazzle high aluminosilicate microcrystalline glass. The glass ceramic is prepared from the following components in percentage by weight: 20 to 1.5 percent of SiO2, Al2O3, Na2O, K2O, P2O5, MgO and ZrO; wherein the mass percentage content of P2O5 is 4.5 to 14.0 percent, and the weight ratio of Al2O3 to P2O5 is 0.5 to 4.4. According to the method, annealing is controlled after melting forming, and a single nepheline phase with the average size smaller than 100 nm is directionally separated out in a glass matrix. After the material is subjected to chemical strengthening, the stress layer depth larger than 50 microns and the surface compressive stress larger than 750 MPa can be obtained, the anti-falling performance is remarkably improved, and meanwhile the high light transmittance of 90% or above is kept. In addition, by means of selective etching of acid liquor on the split-phase structure, uniform spherical pits with the roughness being 0.05-0.4 micrometer can be formed in the surface of the split-phase structure, and the excellent anti-dazzle effect is achieved. The microcrystalline glass is suitable for cover plate glass in various fields of mobile terminals, vehicle-mounted displays and the like.

The invention relates to the technical field of nonmetal mineral product processing, and discloses a nepheline blank production and recovery method which comprises the following steps: S1, grinding nepheline raw ore to obtain ore pulp, and collecting particle size distribution data of the ore pulp through an online monitoring device in the grinding process, s2, the mineral dissociation state of the ore pulp is obtained on the basis of the particle size distribution data of the ore pulp, and feedback control is conducted on the grinding process on the basis of the mineral dissociation state so that selective dissociation of nepheline and iron-containing impurities can be achieved; and S3, the ore pulp subjected to selective dissociation sequentially passes through third-order magnetic separation units with different gradient magnetic fields to be subjected to impurity removal, and each third-order magnetic separation unit comprises a turbulent flow field and a high-gradient magnetic field. In the grinding step, an online monitoring device is arranged to collect particle size distribution data of ore pulp in real time, feedback control is conducted on the grinding process on the basis of a mesh number and dissociation degree dynamic model, and selective dissociation of nepheline and iron-containing impurities can be achieved.

The invention discloses an application method of an environment-friendly high-temperature copper glaze fired in a multi-element atmosphere, which comprises the following steps: step 1, weighing the following raw materials in percentage by weight: 30-32% of nepheline syenite, 5-10% of talc, 4-9% of kaolin, 15-18% of calcite, 30-35.5% of quartz, 4-9% of barium carbonate, 0.8-2% of additional tin oxide and 0.2-1.4% of copper oxide, and uniformly mixing to obtain powder; 2, mixing and ball-milling are carried out; step 3, sieving the glaze slip with meshes, and aging to obtain glaze; and 4, applying the glaze to the surface of the green body, drying, and sintering in an oxidizing or reducing atmosphere to obtain the environment-friendly high-temperature copper glaze decoration product. The technology provides an original solution for solving the long-standing core technology contradiction of'atmosphere sensitivity 'and'environmental protection' of the high-temperature copper glaze, so that the high-temperature copper glaze has a relatively good market prospect.

The invention belongs to the field of mineral product processing, and particularly relates to a comprehensive utilization method of laterite-nickel ore, which comprises the following steps: carrying out first-stage reduction roasting on a mixture containing the laterite-nickel ore and a sodium-aluminum-silicon regulator, and then carrying out first-stage magnetic separation to obtain a nickel-cobalt-iron first-stage magnetic separation material and first-stage magnetic separation tailings; performing second-stage roasting on the first-stage magnetic separation tailings in a functional atmosphere containing carbon dioxide, and then performing second-stage magnetic separation to obtain an iron-containing second-stage magnetic separation material and a nepheline tailings product; in the mixture, the molar weight ratio of sodium to silicon is 0.8-1.25, and the molar weight ratio of aluminum to silicon is 0.65-1.0; the temperature of the first-stage reduction roasting is 950-1150 DEG C; the temperature of the second-stage roasting is 750-1050 DEG C; the content of carbon dioxide in the functional atmosphere is more than 40 vol.%. According to the method, all components of the laterite-nickel ore are recycled step by step, all-component utilization of resources is achieved, a feasible way is provided for efficient and comprehensive utilization of the low-grade laterite-nickel ore, and the method has extremely high application and popularization value.

The present application provides a jade-like glaze, a ceramic tile, and a preparation method thereof, relating to the technical field of ceramic tiles. The jade-like glaze comprises a jade-like protective glaze and a jade-like surface glaze, wherein the jade-like protective glaze comprises the following mineral raw materials in parts by weight: kaolin, ball clay, black soil, nepheline, talc, zirconium oxide, pyrophyllite, zinc oxide, and strontium carbonate; the jade-like surface glaze comprises: petalite, quartz, bauxite, Suzhou soil, zircon sand, and limestone. The ceramic tile comprises a stacked brick layer, a jade-like surface glaze layer, and a jade-like protective glaze layer; wherein the jade-like surface glaze layer and the jade-like protective glaze layer are prepared using the jade-like glaze as raw material. The preparation method of the ceramic tile comprises: sequentially applying the jade-like surface glaze slurry and the jade-like protective glaze slurry on the surface of the brick, firing in a kiln, and obtaining the ceramic tile. By optimizing the surface glaze formula and then combining it with the jade-like protective glaze, the present application makes the glaze surface of the fired ceramic tile warm and soft, with a strong jade texture.

The invention provides a green and environment-friendly high-alumina fly ash multi-component synergistic extraction method, and belongs to the technical field of fly ash extraction. The preparation method comprises the following steps: adding sodium carbonate into fly ash serving as a raw material, mixing and calcining to obtain a nepheline phase which is easily soluble in an acidic medium; then adding sulfuric acid to decompose the sintered product to dissolve the sintered product, heating and aging to separate silicon from aluminum to obtain silica gel and a metal salt solution, using the silica gel to prepare white carbon black, and separating and purifying the metal salt solution to prepare aluminum oxide, iron oxide, calcium hydroxide and magnesium hydroxide. According to the method, the problems of low utilization rate and impure product in the traditional extraction process are better solved, the utilization rate of useful substances in the fly ash can reach 95% or above, and the method is more environment-friendly, so that green, refined and efficient utilization of the fly ash is realized.

The invention discloses a multi-stage nepheline concentrate powder production method which comprises the following steps: step 1, performing coarse crushing, ore washing, intermediate crushing, primary screening and grading and fine crushing on nepheline raw ore to obtain nepheline powder and muddy water I; 2, the nepheline powder is subjected to ore grinding, second-time screening classification and first-time hydraulic cyclone classification, and coarse-grained ore pulp and argillaceous ore pulp are obtained; 3, the coarse-fraction ore pulp is subjected to coarse-fraction wet-type grading magnetic separation, and coarse concentrate I and coarse-fraction tailings are obtained; the argillaceous ore pulp is subjected to secondary hydraulic cyclone classification and fine-fraction wet classification magnetic separation to obtain rough concentrate II, muddy water II and fine-fraction tailings; 4, the rough concentrate I is subjected to concentration, drying, dry magnetic separation classification, ball milling and wind classification, and first-stage nepheline concentrate and second-stage nepheline concentrate are obtained; and dehydrating and drying the rough concentrate II to obtain third-level nepheline concentrate. And the production of three-stage high-quality nepheline concentrate powder can be simultaneously carried out by integrating two-stage hydraulic cyclone classification, wet magnetic separation, dry magnetic separation and multi-scale ore grinding.