32 results about "China clay" patented technology

1. The name of the design product: whiteness tester. 2. The use of the design product: for measuring the whiteness of paper and paperboard, pulp and chemical pulp, cotton and chemical fiber, textiles, plastics, ceramics, porcelain, starch, salt, white cement, porcelain clay, talc, calcium carbonate, nano calcium carbonate and other objects. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best shows the design points: perspective view.

The environment-friendly heat-resistant ceramic clay production equipment comprises a driving base, a charging barrel, a granulation assembly, a rolling assembly and a material mixing guide piece, a speed reduction unit and a main shaft rod are arranged in the driving base, and the main shaft rod is driven by a motor to rotate at low speed and large torque. The granulating assemblies are sequentially arranged above the charging barrel in a sleeving mode, each granulating assembly is composed of a detachable sleeve shell and a granule pore plate, and the pore diameters of the granule pore plates of different layers are gradually decreased step by step; the rolling assembly is composed of a truss rod and rolling blocks at the two ends, a material guiding inclined face, a rolling inclined face and a material discharging face are sequentially formed at the bottoms of the rolling blocks, and guiding, rolling and smooth discharging of materials are achieved. According to the equipment, continuous crushing and particle size control of heat-resistant waste are achieved through a multi-stage rolling and graded diameter control structure, the granulation module can be rapidly replaced according to needs, the equipment has the advantages of being uniform in crushing, adjustable in particle size, automatic in discharging and sufficient in mixing, and the production efficiency and particle consistency of environment-friendly ceramic clay are remarkably improved.

The invention discloses a method for preparing environment-friendly domestic porcelain from waste domestic porcelain, and relates to the technical field of domestic porcelain, and the environment-friendly domestic porcelain is prepared from the following components in parts by weight: 20-25 parts of recycled porcelain powder, 28-38 parts of kaolin, 12-17 parts of porcelain clay, 10-15 parts of quartz, 18-23 parts of albite and 0.2-0.5 part of maltodextrin. The preparation method comprises the following steps: preparing the waste domestic porcelain into recycled porcelain powder; mixing and ball-milling the recycled porcelain powder, kaolin, porcelain clay, quartz, albite and maltodextrin in parts by mass to obtain slurry; squeezing, sinking and pugging the mud to obtain strip mud; molding and glazing the strip clay; and sintering the glazed green body to obtain the environment-friendly domestic porcelain. According to the invention, the resource consumption and environmental pollution can be obviously reduced, the plasticity and molding stability of the pug can be improved, the uniform formation of a glass phase and a mullite crystal phase can be promoted through a specific component ratio and multi-stage sintering, and the qualified rate of finished products is high.

Electric heating device (10), with: a body (20); and a heating head (30) connected to the body (20) and comprising an electric heating wire (31) and a heat storage element (32), wherein the electric heating wire (31) has a first section (311) and a second section (312) with a proximal end connected to the first section (311), wherein the first section (311) is made of pure nickel and the second section (312) is made of ferrochrome, and wherein the heat storage element (32) is mounted around a radial outer circumference of the second section (312), and wherein the heat storage element (32) is made of china clay.

The utility model discloses a china clay iron content detection device which comprises an X-ray fluorescence spectrophotometer body, a partition plate is arranged at the top of the X-ray fluorescence spectrophotometer body, an operation interface is arranged in front of the X-ray fluorescence spectrophotometer body, a sample testing cavity and a detection probe used for containing the X-ray fluorescence spectrophotometer body (1) are arranged on the partition plate, a bottom support is arranged above the sample testing cavity, and the bottom support is connected with the X-ray fluorescence spectrophotometer body (1). A sample cup is arranged above the bottom support, the sample cup is cylindrical, the bottom of the sample cup is open, the sample cup is used for placing a porcelain clay sample, and the bottom support is used for bearing the sample cup and the cut-off film; a baffle and a winding roller are arranged on the partition and located on the two sides of the sample cup respectively, a film outlet is formed in the baffle, a film box is placed on one side of the baffle, a film is pulled out from the outlet and extends to the gap between the bottom support and the sample cup to be placed on the winding roller, and the winding roller winds the film. The utility model belongs to the technical field of china clay iron content detection, and particularly relates to a china clay iron content detection device.

The utility model relates to the technical field of ceramic pressing, and discloses a ceramic pot pressing device which comprises a workbench and a movable plate arranged above the workbench, the upper end of the workbench is fixedly connected with a lower die holder, a U-shaped block is fixedly installed on the outer wall of the lower die holder, the inner wall of the U-shaped block is rotationally connected with a winding wheel, the lower end of the movable plate is fixedly connected with an L-shaped block, and the lower end of the L-shaped block is fixedly connected with the lower die holder. A guide wire hole is formed in the inner wall of the lower die base, a stainless steel wire is fixedly installed at the lower end of the L-shaped block and penetrates through the guide wire to be fixedly connected with the winding wheel, a stepping motor is installed on the outer wall of the U-shaped block, an output shaft of the stepping motor is fixedly connected with the winding wheel, and an inner container is placed in the inner wall of the lower die base and driven by a driving mechanism to rotate. And in the porcelain clay blank pressing process, the stainless steel wires can achieve the trimming effect on the porcelain clay, and the stainless steel wires are thin, small in contact surface and not prone to adhering to the porcelain clay, so that the trimming quality of the blank body is improved, and the blank pressing quality of the blank body is improved.

The utility model relates to the technical field of porcelain clay production, and discloses a porcelain clay stock bin feeding safety protection frame which comprises a stock bin cover plate and a feeding hopper, the lower end of the feeding hopper is communicated with a feeding pipe, a cover plate is installed at the top of the feeding hopper, a packaging bag guide hole is formed in the middle of the cover plate, and an elastic dustproof hopper is installed on the lower side of the packaging bag guide hole. A cutting knife is installed on the upper portion of the inner side of the feeding hopper, a driving assembly is connected between one sides of the two opposite side walls of the feeding hopper, a rotating shaft is installed on one side of the top of the cover plate, multiple beating soft plates are installed on the outer side of the rotating shaft, and a linkage assembly is connected between the rotating shaft and the driving assembly. Compared with the prior art, the feeding device has the advantages that the porcelain clay packaging bag penetrates through the packaging bag guide hole to feed materials into the feeding hopper, and the elastic dustproof hopper is arranged on the outer side of the porcelain clay packaging bag in a sleeving mode, so that dust is prevented from flying outwards in the feeding process; the driving assembly drives the rotating shaft to rotate through the linkage assembly, the rotating shaft drives the multiple beating soft plates to rotate, and caked porcelain clay in the porcelain clay packaging bag is scattered through the beating soft plates.

The invention discloses a high-chemical-stability cloud transmutation glaze and a preparation method thereof, and relates to the technical field of ceramic glazes, and the high-chemical-stability cloud transmutation glaze is prepared from the following components: high-boron frit, low-expansion frit, potassium feldspar, quartz, calcite, calcined talc, calcined zinc oxide, china clay A, china clay B, titanium dioxide, a ceramic colorant and vanadium pentoxide. Wherein the china clay A is selected from kaolin containing 0.05-0.4 wt% of rare earth oxide, and the china clay B is selected from large-particle suspended kaolin with 325-mesh screen residue less than or equal to 0.1% and ignition loss of 5-8%. The high-chemical-stability cloud transmutation glaze provided by the invention has a natural and elegant cloud transmutation artistic effect which is far better than that of the traditional double-layer or multi-layer transmutation glaze; the chemical stability is obviously improved, and the chemical stability can pass the most rigorous 200-turn dishwasher cycle test in European ICTS.

The invention relates to the technical field of lithium-containing china clay ore flotation, and provides a lithium-containing china clay ore flotation collecting agent which comprises polyether amine, cotton oil fatty acid, sodium hydroxide, glycerol and petroleum sodium sulfonate. The invention further provides a method for preparing the flotation collecting agent, and the method comprises the steps that cotton oil fatty acid, sodium hydroxide and water are mixed for saponification reaction, and saponified fatty acid is obtained; glycerol and petroleum sodium sulfonate are uniformly mixed, and a modifier is obtained; and uniformly mixing the polyether amine, the saponified fatty acid and the modifier. The invention further provides application of the flotation collecting agent or the method in flotation of the lithium-containing porcelain clay ore. The flotation collecting agent provided by the invention is suitable for low-grade lithium-containing china clay ore, and at least can achieve the effect of selectively collecting lepidolite under a neutral condition without adding any other agents, so that the grade and the recovery rate of lithium in the obtained lepidolite concentrate are ensured.

The utility model relates to the technical field of porcelain clay processing, and discloses a filter press for porcelain clay processing, which comprises a supporting plate, a motor is arranged on the supporting plate, the motor is connected with a screw rod, a pressing plate is sleeved on the screw rod, a plurality of filter plates are sleeved between the pressing plate and the screw rod, and filter cloth is arranged on the filter plates. A through groove is formed in the filter plate, a water outlet communicated with the through groove is formed in the lower end of the filter plate, a drainage pipe is connected to the lower end of the filter plate, annular grooves are formed in the left side wall and the right side wall, located outside the through groove, of the filter plate respectively, concave positions matched with the annular grooves are formed in the filter cloth, the concave positions of the filter cloth are located in the annular grooves, and limiting frames are inserted in the concave positions in a matched mode; a detachable vibration mechanism is arranged on the right side of the supporting plate, the vibration mechanism comprises a connecting plate, a spring is arranged at the lower end of the connecting plate, a telescopic rod is connected to the outside of the spring in a sleeving mode, and a vibration motor is connected to the side wall of the connecting plate. Compared with the prior art, the filter has the advantages that materials are convenient to take, and the filter cloth is convenient to replace.

The utility model provides a novel porcelain clay filters vibrating screen, including screen main part, the support mechanism of supporting screen main part, and the drive mechanism of driving screen main part, still include the fine aggregate collection car of the fine material discharge gate below is received, and the positioning mechanism of positioning fine aggregate collection car, in actual processing, fine aggregate collection car moves to the fine material discharge gate below receiving the fine material of screening from the guide rail below screen main part in the direction of movement, first limiting part is stopped in the front of fine aggregate collection car and is limited, avoids fine aggregate collection car to continue advancing, second limiting part is stopped in the back of fine aggregate collection car and is limited, avoids fine aggregate collection car to appear the situation of retreating, first limiting part and second limiting part ensure that fine aggregate collection car is in the accurate position below fine material discharge gate and carries out accurate stable aggregate action, and fine material also can not scatter, ensure that the processing site is neat, therefore, the utility model has the advantages such as ensuring aggregate efficiency and accurate stability.

The invention relates to the technical field of preparation of ceramic microporous filter cartridges, in particular to a preparation method of a quincunx tubular light porcelain microporous filter cartridge, which comprises the following steps: preparing mixed powder from light porcelain clay, dolomitic sand, glass sand, bamboo powder and clay; a plastic adhesive is prepared from liquid aluminum dihydrogen phosphate, silica sol, sesbania gum powder, hydroxypropyl methyl cellulose, a binding agent and purified water; the mixed powder and a plastic adhesive are mixed into green body pug; carrying out circular mulling and aging treatment on the green body pug; extruding, cutting and shaping to obtain a single-tube green body; sintering a single-tube green body, cooling and then cutting at fixed length; spraying a functional coating on the outer surface of the single pipe, sintering and curing; arranging and assembling a plurality of single tubes into a filter cartridge with a quincunx tube array structure; a filter cartridge end cover is sealed by glue filling; and detecting the filtering performance of the filter cartridge. The method has the remarkable effects that the filtering area is maximized, and the efficiency is improved; light weight, high strength and convenient installation and maintenance; the service life is long; the energy-saving and emission-reducing effects are good; the adhesion resistance is high; the assembly is flexible, and the sealing performance is good.

The present application relates to the technical field of the production of sanitary ceramics, and in particular relates to a green body for eliminating sintering blisters from a high-pressure formed ceramic, and a preparation method therefor. On the basis of the mass percentage of raw materials, the green body comprises: 20%-25% of kaolin, 1%-3% of quartz, 5%-8% of ball clay, 17%-27% of high-alumina porcelain stone, 3%-8% of waste porcelain, 3%-10% of low-glaze recycled mud, 0%-5% of raw porcelain clay, 10%-15% of water-washed porcelain clay, 10%-21% of spodumene tailings and / or microcline, and 2%-5% of wollastonite. The green body is obtained by means of high-pressure slip casting, drying and sintering. In the present application, the formation and blocking mechanisms of sintering blisters are precisely determined, thereby effectively controlling the defect of sintering blisters in high-pressure formed sanitary ceramic products. In addition, a large number of industrial solid waste raw materials such as waste porcelain, waste mud and spodumene tailings are used in the formula of the green body of the present application, which helps to reduce the accumulation of industrial solid waste, reduce environmental pressure and promote the sustainable development of the sanitary ceramics industry.

The invention belongs to the technical field of preparation of ceramic frits, and particularly relates to a high-whiteness ceramic frit and a preparation method thereof. The high-whiteness ceramic frit is prepared from the following raw materials: quartz, calcined aluminum oxide, lithium china clay ore, magnesium slag, cordierite powder, lanthanum silicate, strontium tetraborate, sodium fluosilicate, nano sodium zirconium phosphate, nano yttrium aluminate and nano samarium oxide. In the high-whiteness ceramic frit provided by the invention, quartz and calcined alumina form a continuous aluminosilicate glass phase three-dimensional network structure; the lithium china clay ore, the magnesium slag, the strontium tetraborate and the sodium fluosilicate have a synergistic effect and are filled in pores of a three-dimensional network structure to promote densification of ceramic frits, so that whiteness scattering and mechanical property degradation caused by the pores are avoided; the mechanical property of the ceramic frit is ensured by introducing cordierite powder and lanthanum silicate; nano sodium zirconium phosphate, nano yttrium aluminate and nano samarium oxide are added as functional fillers, so that the whiteness of the ceramic frit is further improved.

According to the novel ceramic clay wastewater circulating device, in the actual working process, the water pump conveys wastewater in the wastewater pool to the water inlet through the water inlet pipeline, the wastewater enters the space between the spiral extrusion barrel and the spiral shell, and the wastewater is filtered by the filtering holes of the spiral shell and then enters the water outlet; clear water enters the water passing gap and flows out from the water outlet to the water storage tank to be stored for recycling, filtered porcelain clay particles are left outside the spiral shell to form porcelain clay, the porcelain clay is spirally conveyed by the spiral shell, specifically, the motor drives the rotating shaft to drive the spiral shell to rotate, wastewater is stirred by utilizing the three-dimensional spiral shape of the spiral shell, and the waste water is recycled. According to the utility model, waste water is fully and efficiently contacted with the large spiral surface area of the spiral shell, meanwhile, hole blockage can be avoided relative to high-speed washing of water flow, full and efficient filtration is ensured, and the rotating speed and the rotating direction of the spiral shell can be adjusted to adapt to the waste water concentration, the filtration requirement and the like. Therefore, the water-saving circulating system has the advantages of high-efficiency circulation, water conservation and the like.

The utility model provides an efficient china clay stirring device which comprises a tank body, a tank cover is fixedly connected to the top of the tank body, a collecting piece is fixedly connected to the middle of the outer surface of the tank body, and a drainage valve is arranged on the collecting piece. And after drainage is completed, the stirring rod can be started again, so that the separation disc rotates, then the crushing needle and the push broach scrape and shovel the inner bottom wall of the tank body, the situation that a large amount of petuntse adheres to the inner bottom wall of the tank body is avoided, meanwhile, when the stirring rod is taken out, the caked petuntse is crushed through the top of the conical piece, and the petuntse is separated from the bottom wall of the tank body. The problems that when existing porcelain clay is used, water needs to be added for mixing, then water is discharged through precipitation, a clay blank can be formed, but after the porcelain clay and the precipitation are caked, a large amount of porcelain clay is extremely prone to adhering to the inner wall and the bottom of the precipitation tank, and cleaning is not easy are solved.

The invention discloses a method for preparing a low-carbon environment-friendly cementing material from china clay tailings, and relates to the technical field of cementing materials, and the method comprises the following steps: step 1, pounding: pounding the original china clay tailings, fully stirring, adding polyethylene glycol and sodium metaphosphate with the concentration of 0.2%, and mixing; 2, screening is conducted, specifically, the sample obtained after pulp smashing in the step 1 is screened, and ore with the particle size larger than 0.063 mm and a sample A with the particle size smaller than 0.063 mm are obtained; and step 3, taking 40-50% of the sample A, doping 40-50% of cement clinker and 5-8% of superfine gasified ash, and mixing to prepare the cementing material. The porcelain clay tailings are used for replacing 50% of cement, so that the production cost of the cement is reduced, the carbon dioxide emission of the cement is reduced, and the performance is not reduced.

The invention discloses corrosion-resistant porcelain clay with aromatherapy smell and a preparation process thereof, and belongs to the technical field of ceramics. The aromatherapy odor corrosion-resistant porcelain clay comprises aromatherapy liquid and a porcelain clay material, and the porcelain clay material comprises the following components in parts by mass: 75-80 parts of kaolin, 15-20 parts of quartz, 8-11 parts of silicon nitride, 9-11 parts of boron nitride, 6-8 parts of yttrium oxide, 8-12 parts of calcined talc, 10-12 parts of aluminum oxide, 8-13 parts of potassium feldspar, 8-10 parts of a dispersing agent, 6-8 parts of a sintering agent and 5-7 parts of a curing agent. The ceramic product prepared by the invention has excellent corrosion resistance and aroma flavor.

The application discloses a coating liquid composition, characterized in that the coating liquid composition comprises, in parts by weight, 15-30 parts of porcelain clay, 40-50 parts of heavy calcium carbonate, 30-35 parts of light calcium carbonate, 10-25 parts of coating latex, 3-10 parts of coating starch, 10-30 parts of waterproof and oil-proof paint, and 0.5-8 parts of micro-assistants; the waterproof and oil-proof paint comprises an acrylate emulsion and a mineral, wherein, in parts by weight, the acrylate emulsion is 100 parts of absolute dry, and the mineral is 0-50 parts; the application can improve the waterproof and oil-proof performance of the waterproof and oil-proof coated card paper, has good heat sealing performance, and can realize recycling of the waterproof and oil-proof coated card paper, and is good for the environment and has no pollution.

The invention provides an underwater oxygen arc cutting strip and a preparation method thereof, and relates to the field of cutting strips. The underwater oxygen arc cutting strip comprises a low-carbon seamless steel tube, a coating wrapping the outer surface of the low-carbon seamless steel tube and an insulating layer wrapping the surface of the coating. The coating is prepared from, by mass, 20%-49% of reduced ilmenite, 25%-50% of reduced iron powder, 10%-28% of porcelain clay, 4%-25% of potassium feldspar or microcrystalline cellulose sodium, 2%-12% of cornstarch, 1%-15% of graphite, 0.2%-5% of CMC and 12%-30% of phenolic resin. According to the cutting strip, phenolic resin is used as a bonding agent to bond a coating raw material, and then the insulating layer is coated, so that the water-proof, insulating and anti-static effects are achieved.

The application relates to the technical field of ceramic tiles, and mainly relates to a heat-insulating cave stone ceramic tile and a preparation method thereof. The heat-insulating cave stone ceramic tile comprises a ceramic tile body and a nano coating, and the ceramic tile body comprises potassium sodium feldspar, medium-temperature potassium sand, bentonite, transparent anorthite, talcum powder, kaolin, raw ore slurry, porcelain clay, bauxite and alumina modified microcapsules. The preparation method of the alumina modified microcapsules comprises the following steps: heating paraffin to a molten state to obtain molten paraffin; mixing a PVA aqueous solution with the molten paraffin, stirring at 7500-8500 r / min, and forming a paraffin emulsion; dispersing nano alumina in a melamine-formaldehyde resin solution to obtain a suspension solution; mixing the suspension solution with the paraffin emulsion to obtain a mixed solution; adjusting the pH of the mixed solution, stirring and reacting at 60-70 DEG C for 2-3 h to form a microcapsule wall; and cooling, separating, washing and drying to obtain the alumina modified microcapsules.

This invention provides a manufacturing process for a double-layered insulated ceramic cup based on 3D printing. The manufacturing process includes the following steps: grinding, drying, and mixing titanium dioxide and potassium carbonate; preparing a modifier through high-temperature reaction; adding the modifier to modify porcelain stone, kaolin, and clay; adding yttrium oxide and calcium oxide and ball milling and mixing; modeling and 3D printing a double-layered ceramic green body; and sintering the double-layered ceramic green body. This invention uses kaolin, clay, porcelain stone, and porcelain clay as raw materials, and utilizes a 3D clay printer to print the inner and outer layers of the ceramic cup, with the middle layer being a vacuum insulation layer. This effectively prevents heat transfer, achieving heat insulation and anti-scalding effects, thereby improving the practicality of the ceramic cup. Furthermore, the 3D printing process for producing double-layered ceramic cups is simple and reduces the complexity of the molding process.

The invention relates to the field of heterogeneous catalysis, and discloses a lactose isomerization catalyst based on porous ceramics and a preparation method and application thereof, the catalyst comprises porcelain clay, ZrO2 powder, Ca (OH) 2 and a sephadex pore-forming agent; the preparation method comprises the following steps: grinding the raw materials to micron order; mixing the ground raw materials with a sephadex pore-forming agent, and adding deionized water for ball milling; injecting into a mold after ball milling, drying and demolding to obtain a green body; s4, sintering the green body; the catalyst is applied to the lactose isomerization reaction, and the problems of low activity and limited mass transfer are solved through the synergistic effect of Ca (OH) 2 alkaline sites and ZrO2 acidic sites and a porous structure formed by dextran gel pore forming. Low-temperature sintering is adopted, so that the Ca (OH) 2 active component is stably immobilized while the mechanical strength is ensured, the high-temperature decomposition inactivation of the Ca (OH) 2 active component is avoided, and the catalyst has high activity and high stability and is easy to recover.

The invention discloses a method for recovering rare earth elements in a deep processing process of porcelain clay resources, which comprises the following steps: by adopting the procedures of sand-stone separation, silt separation and the like, pumping the separated porcelain clay slurry into a specific first filter press through a high-pressure pump for filter pressing and dehydration, and finishing mud-water separation when the water content reaches 25-30%; under the condition of keeping a filter pressing state, injecting an ammonium sulfate solution into a first filter press at a high pressure of 0.8-1.2 MPa, and sequentially carrying out processes of high-pressure leaching, high-pressure blowing-out, high-pressure washing, high-pressure blowing-out and the like on rare earth elements, so as to complete an operation cycle; according to the method, rare earth-containing leaching mother liquor, rare earth-containing washing water and rare earth-removed petuntse products are obtained under the operation of specific procedures (injection of an ore leaching agent, washing water volume, high-pressure air, leaching, washing, blowing-out time and the like); the whole method is efficient and rapid, program control operation is achieved, operation is simplified, the recovery rate of rare earth elements is increased, material consumption is greatly reduced, the overall production cost is reduced, and the method is practical and reliable.

This invention belongs to the field of ceramic frit preparation technology, specifically relating to a high-whiteness ceramic frit and its preparation method. The high-whiteness ceramic frit of this invention is composed of the following raw materials: quartz, calcined alumina, lithium kaolin ore, magnesium slag, cordierite powder, lanthanum silicate, strontium tetraborate, sodium fluorosilicate, nano-sodium zirconium phosphate, nano-yttrium aluminate, and nano-samarium oxide. In the high-whiteness ceramic frit of this invention, quartz and calcined alumina form a continuous aluminosilicate glass phase three-dimensional network structure; lithium kaolin ore, magnesium slag, strontium tetraborate, and sodium fluorosilicate work synergistically to fill the pores of the three-dimensional network structure to promote the densification of the ceramic frit and avoid whiteness scattering and mechanical property degradation caused by pores; the introduction of cordierite powder and lanthanum silicate ensures the mechanical properties of the ceramic frit; the addition of nano-sodium zirconium phosphate, nano-yttrium aluminate, and nano-samarium oxide as functional fillers further enhances the whiteness of the ceramic frit.

The present invention relates to the technical field of solid waste utilization, and in particular relates to the use of red mud as a raw material for preparing porcelain clay. Particularly, a preparation method for porcelain clay comprises the following steps: A) mixing red mud and an acid solution, and carrying out a reaction to obtain a salt solution having a pH value of 4-6.8; B) carrying out filter pressing on the solution obtained in step A) so as to control the mass content of water to be not higher than 50%, then introducing compressed air, and carrying out drying with the compressed air; C) mixing water and the solid obtained after the drying with compressed air, and carrying out filter pressing again; D) drying and burning the solid obtained after the filter pressing in step C); and E) carrying out iron removal on the burned material obtained in step D) to obtain porcelain clay. By researching, the present applicant found that processing red mud via such steps described above can utilize the vast majority of components in red mud and thus produce high-quality porcelain clay with very little waste residues and waste water generated thereby.

The invention discloses lightweight composite porcelain clay and a preparation method thereof, and belongs to the technical field of building materials. The porcelain clay comprises kaolin and a magnesium oxide and titanium oxide composite nucleating agent in a specific mass ratio. During preparation, the raw materials are firstly smelted and quenched by water, and then two-stage gradient heat treatment is performed. Through the synergistic effect of the composite nucleating agent and a unique heat treatment process, a high-strength crystal skeleton and uniform pores are constructed in the material, the unification of light weight and high strength is realized, and the problem of low strength of the existing light ceramic is solved.

The application provides an acid uncoated food carton paper and a preparation method thereof. The preparation method comprises the following steps: preparing a slurry, wherein the slurry comprises paper pulp, a filler and an auxiliary agent, the filler is porcelain clay with a fluorine content of less than 50 mg / kg; papermaking under an acid condition; and product detection. The preparation method of the acid uncoated food carton paper provided in the application controls the introduction of fluorine-containing substances from the source, and then a safe and reliable acid uncoated food carton paper meeting the national standard is prepared.

The present application relates to the technical field of the production of sanitary ceramics, and particularly relates to a low-temperature sanitary ceramic green body and a preparation method therefor, and a low-temperature sanitary ceramic. The green body comprises the following raw materials in percentages by mass: 10-20% of ball clay, 10-25% of high-alumina porcelain stone, 5-15% of spodumene tailings or microcline, 25-45% of porcelain clay, 0-10% of potassium feldspar, 5-20% of tremolite, and 5-20% of boron-containing waste glass. Problems in controlling the regularity of mass-produced products are overcome by introducing natural microfibrous / nanofibrous tremolite to replace a calcium- and magnesium-containing raw material, i.e., dolomite, performing low-temperature sintering to form a system comprising multiple mineral phases such as sodium / calcium feldspar, using a key technique capable of achieving steady-state control over the deformation rate during sintering, and broadening the sintering range of a low-temperature sintering green body. Moreover, a low-temperature sintering ceramic slurry is endowed with better forming performance, thereby improving the tensile strength of both wet and dried green bodies, solving quality problems such as susceptibility to cracking during the forming and firing processes of a green body caused by poor suspension properties of a slurry, and meeting the process requirements of mass production.