288 results about "Corundum" patented technology

The application belongs to the technical field of refractory materials, and particularly relates to a corundum castable special for a circulating fluidized bed boiler and a preparation method thereof. The raw materials of the castable include 20-50 parts of white corundum particles with a size of 3-5 mm, 5-10 parts of alpha-alumina micropowder, 2-5 parts of microsilica, 1-5 parts of a binder, 0.5-1 part of a water reducing agent, and 1-5 parts of SiC-ZrB2 / chitosan quaternary ammonium salt modified graphene composite material. The castable has the properties of low apparent porosity, good mechanical properties, strong corrosion resistance and the like.

The invention relates to the technical field of blast furnace iron making, and particularly discloses a blast furnace composite stemming and a preparation method thereof.The blast furnace stemming is prepared from, by mass, aggregate including (43-X1-X2-X3)% of brown fused alumina, 13% of coke, (16-B)% of SiC, B% of clay, 4.5% of sericite, 7% of kyanite, 7.5% of silicon carbide iron, 4% of ball pitch, 5% of iron area waste mixture, 1% of iron oxide scale Fe3O4 X, 2% of cubic boron nitride c-BN X and 3% of graphene oxide GO X; comprising the following components in percentage by weight: 13-C% of tar, C% of asphalt and 2% of sodium pyrophosphate Na4P2O7; according to the method, stemming softening caused by excessive use of the oxide scale when the cold air pressure is low is prevented, the problems of incomplete internal structure and insufficient strength development of stemming caused by insufficient heat are avoided, excessive use of nanoscale materials is avoided, and the material cost is reduced.

Container whose inner wall surfaces are at least partially covered with a coating having the following crystallized phases, as a percentage based on the total mass of the crystallized phases: Spinel MgAl2O4: 10% to 60%, and Crystallized phases other than spinel MgAl2O4 and corundum: < 10% Corundum: complement to 100%.

This invention relates to the field of refractory materials technology, specifically to an anti-slag-adhesion environmentally friendly refractory spray coating adapted to the contact surface of an tundish cover and its preparation method. The dry powder of this spray coating mainly consists of corundum aggregate, modified spinel powder, composite binder, and modified anti-slag additives. Through precise gradation and spatial decoupling of components, a strong and tough skeleton is constructed. During water addition, rheological changes, and baking, the anti-slag additives spontaneously target and migrate outwards, reconstructing a superhydrophobic slag-repellent armor on the slag-facing surface. Combined with the internal spinel-based slag-locking and deformation buffer defense lines, a gradient synergistic defense is achieved. This invention is completely chromium-free and environmentally friendly, completely eliminating the pain point of high-temperature slag adhesion and spalling, extending its service life to 40 heats, and is suitable for large-scale adaptation to special steel continuous casting conditions.

The utility model relates to the technical field of white corundum processing equipment, and discloses a white corundum processing dust removal device which comprises a working table, a portal frame is fixedly connected to the upper portion of the working table, a processing mechanism is installed on the portal frame, a mud cover is fixedly connected to one side of the processing mechanism, and the mud cover covers the upper portion of the output end of the processing mechanism. A water pipe is fixedly connected to the outer edge of the inner wall of the mud cover, cooling sprayers are symmetrically connected to the two sides of the mud cover in a penetrating and rotating mode, the water inlet ends of the cooling sprayers communicate with a water pumping mechanism through third water inlets, side baffles are symmetrically connected to the bottom ends of the two sides of the mud cover in a rotating mode, and first supporting blocks are fixedly connected to the upper portions of the outer sides of the side baffles; the top face of the first supporting block is fixedly connected to one end of an arc-shaped rod, the other end of the arc-shaped rod is slidably connected with a through hole formed in the second supporting block in a penetrating mode, the arc-shaped rod is sleeved with a spring, the upper end and the lower end of the spring are arranged between the first supporting block and the second supporting block, and dust can be effectively removed in the white corundum machining process.

The method comprises the following steps that S1, dry materials and a binding agent are provided, and the dry materials comprise 19 wt%-24 wt% of intaglio corundum with the particle size being 3-5 mm, 22 wt%-35 wt% of intaglio corundum with the particle size being 1-3 mm, 12 wt%-19 wt% of white corundum with the particle size being 0-1 mm, 18 wt%-24 wt% of white corundum fine powder with the particle size being smaller than 200 meshes and 2 wt%-4 wt% of composite metal powder; s2, the dry material and a binding agent are mixed and ground, and a mixed and ground material is obtained; and S3, molding and drying the mixed and ground material to obtain the fire-resistant heat-insulating brick. The refractory brick produced by adopting the inked corundum and the white corundum as main raw materials, adding the composite metal powder and adding the additional binding agent has the advantages of high strength, good thermal shock resistance, good permeability resistance, good erosion resistance and long service life, and can be widely applied to rotary kilns, cement kilns and other parts.

The application relates to a modified chrome-corundum ramming mixture and a preparation and construction process, and belongs to the technical field of chrome-corundum ramming mixtures. The ramming mixture comprises A material, B material and C material, the A material comprises chrome-corundum aggregates, titanium dioxide-coated alumina microspheres, calcium sulfide dihydrate and porous silicon carbide microspheres; the B material comprises chromium oxide-zirconium oxide composite nano powder, sodium thiosulfate pentahydrate, tricalcium phosphate and hexagonal boron nitride flaky crystals; and the C material comprises an aluminum dihydrogen phosphate-magnesium hydroxide compound, a calcium fluoride-alumina eutectic body and a silane coupling agent. The preparation process comprises pretreatment of components, preparation of composite powder and layered preparation; and the construction process comprises the steps of pretreatment, wet mixing, layered ramming, negative pressure infiltration, medium-temperature reaction, spraying and curing and overall sintering. The application can effectively inhibit the generation of hexavalent chromium, significantly improve the thermal shock resistance, mechanical strength and heat conduction performance of the material, and has the advantages of good environmental protection, long service life, excellent construction performance and the like.

This utility model relates to a sliding-rail type tubular Joule furnace, including a furnace box, a tube cavity, a three-way bracket, a sample stage, an infrared temperature probe, and a data control system. The furnace box houses a power supply control system; vacuum flange two and vacuum flange one are respectively installed at the left and right ends of the tube cavity. The design, where two power output wires are connected to the sample stage via vacuum electrodes without passing through the right side of the tube cavity, allows the tube cavity to slide freely left and right as needed, maximizing the exposure of the sample stage and facilitating sample installation and replacement. The tube cavity is constructed from commonly used tube furnace materials such as quartz tubes, corundum tubes, and composite structures, allowing for quick and low-cost replacement as needed while ensuring system sealing. Employing a flange structure common in tube furnaces, with pre-installed inlet and outlet ports, it facilitates various operations such as heating, gas collection, and distillation without requiring additional devices.

The application belongs to the technical field of metallurgy, and particularly relates to a device and method for preparing high-purity silicon film based on vacuum degree control electrolytic silicon purification. The device creates a closed environment through a vacuum cabin, and utilizes a connected vacuumizing mechanism and a vacuum degree adjusting device to accurately control the vacuum degree in the cabin. A material storage mechanism is used for storing silicon materials, and is composed of a corundum crucible and a graphite crucible sleeved outside the corundum crucible. A heating mechanism heats the materials through electromagnetic induction. The method first heats impurity-containing electrolytic silicon in a vacuum environment in a deimpurification mode, so that impurities with higher saturated vapor pressure are preferentially volatilized and deposited on the inner wall of the cabin, thereby realizing preliminary purification. Then, in an evaporation mode, the purified silicon material is heated to a volatilization temperature again, so that it is vapor-deposited on the upper base material to directly form a high-purity silicon film. The scheme integrates the purification and film forming processes, and simplifies the process.

The invention provides a gradient structure metal-oxide-non-oxide composite sliding plate and a preparation method, and relates to the technical field of sliding plate preparation within the steel smelting range. The outer layer of the gradient-structure metal-oxide-non-oxide composite sliding plate is a compact layer with the porosity smaller than or equal to 5%, the thickness ranges from 0.1 micrometer to 20 micrometers, and the phase composition of the gradient-structure metal-oxide-non-oxide composite sliding plate is Ti (C, N), (Al2OC) x (AlN) 1-x and corundum; the internal porosity of the gradient structure metal-oxide-non-oxide composite sliding plate is 10-20%, and the phase composition of the gradient structure metal-oxide-non-oxide composite sliding plate is Ti (C, N), (Al2OC) x (AlN) 1-x, Al-Ti alloy and corundum. The preparation of the metal-oxide-non-oxide refractory material with a compact surface layer structure is realized under the conditions of high temperature, nitrogen and low oxygen partial pressure by virtue of the regulation and control effect of TiO2 on a gas-phase mass transfer product and a material structure in a material sintering process; the method is simple and easy to operate, low in cost, high in efficiency and beneficial to industrial large-scale production and popularization.

The invention relates to the technical field of wastewater treatment, in particular to a coagulating sedimentation medium, a preparation method thereof and a wastewater treatment method. The coagulating sedimentation medium is prepared from the following raw materials in parts by weight: 4 parts of waste for synthesizing cubic zirconia, 0-2 parts of brown aluminum oxide and 0-4 parts of quartz sand. The coagulating sedimentation medium provided by the invention not only has an adsorption effect but also has an acceleration effect on rotational flow sedimentation due to the difference of centrifugal force in the sedimentation process of treating wastewater, so that the sewage treatment time can be shortened, and the water quality fluctuation impact can be coped with.

The utility model discloses a high-altitude melting furnace, which relates to the technical field of glass production, the high-altitude melting furnace is used for high-altitude glass production, the high-altitude melting furnace comprises a melting part, a clarifying part and a forming part, the melting part is used for melting glass raw materials into glass liquid; the clarification part is connected to the melting part and is provided with a clarification runner, the clarification runner is used for clarifying molten glass, and the tank wall of the clarification part is respectively provided with an electric smelting zirconia corundum brick, a clay brick and an asbestos-free calcium silicate board from one end close to the clarification runner to one end far away from the clarification runner; the forming part is connected to the clarifying part and is provided with a forming runner, the forming runner is used for converting liquid glass liquid into plastic glass liquid, a neck is arranged between the forming part and the clarifying part, and the neck is provided with a neck water bag which can be inserted into the glass liquid and is adjustable in depth. The technical scheme provided by the utility model aims to improve the glass production qualification rate and quality of the melting furnace in high-altitude areas.

The application discloses a kind of steel material for nuclear reactor and its preparation method and application.The steel material includes stainless steel matrix and the oxidation layer coated on the surface of the stainless steel matrix;The oxidation layer includes first oxidation layer and second oxidation layer;The first oxidation layer includes the mixed layer with spinel type crystal structure and corundum type crystal structure;The second oxidation layer includes corundum type crystal structure;The second oxidation layer is between the first oxidation layer and the stainless steel matrix.The steel material in the application is provided with oxidation layer on the stainless steel matrix, the oxidation layer contains spinel type crystal structure and corundum type crystal structure, the two kinds of crystal structure are uniform, continuous and dense, thereby blocking liquid lead bismuth from penetrating into crystal structure, so that the steel material has excellent lead bismuth corrosion resistance.In addition, the oxidation layer in the application has high bonding strength with the stainless steel matrix, and the bonding strength can reach more than 80MPa.

The invention discloses a method for efficiently recovering resources from brown corundum ash, which comprises the following steps: step 1, carrying out BCFA magnetic separation to remove iron, mixing and stirring according to a solid-to-liquid ratio of 1: 5, enabling the solution to flow through a magnetic rod, repeating for three times to remove most metal iron in the solution, and enriching fine-fraction ash powder by wind classification; according to the method, BCFA ash is mixed and stirred according to the solid-to-liquid ratio of 1: 5, the solution flows through a magnetic rod and is repeated for three times, most of metal iron in the solution is removed, iron is recycled in the solution, then gallium is adsorbed to the alkaline metal solution through alkaline resin, the gallium is separated from other metals, and the BCFA ash is obtained. And further separating to obtain metal aluminum when the metal aluminum has a precipitation effect when the pH value is 13, so that iron powder is obtained firstly, alum is recycled under an acidic condition, gallium white carbon black and aluminum are recycled under an alkaline condition, and multi-stage utilization of products is realized.

The invention discloses a hardened resin parallel grinding wheel and a preparation method thereof. The hardened resin parallel grinding wheel comprises a parallel grinding wheel base body, the center part of the grinding wheel base body protrudes upwards, a shaft hole used for installing a grinding wheel is formed in the circle center position of the grinding wheel base body, and the base body is composed of a reinforcing material layer located in the base body and a grinding material layer wrapping the reinforcing material layer; the reinforcing material layer is composed of carbon fiber meshes coated with resin, the abrasive material layer is composed of, by weight, 50-60 parts of white corundum, 50-60 parts of single crystal corundum, 5-10 parts of liquid resin, 10-15 parts of powdery resin, 18-22 parts of an activating agent and 0.2-1.0 part of a coloring agent, the activating agent is an organic silicon activating agent or an organic fluorine activating agent, and the coloring agent is Fe2O3 or carbon black. The prepared hardened resin parallel grinding wheel not only can quickly polish a workpiece, but also can ensure that the strength and the heat dissipation effect of the resin grinding wheel are not changed, the durability of the resin grinding wheel is improved, meanwhile, vibration is avoided, and the operation and use comfort is kept.

The invention provides a high-hardness and high-volume-density brown aluminum oxide process which comprises the following steps: step 1, raw material pretreatment for stably feeding bauxite into a shaft kiln by virtue of a conveyor for drying operation, step 2, a raw material accurate proportioning and mixing stage, step 3, a smelting link for completing accurate proportioning and mixing of the raw materials, and step 4, a high-hardness and high-volume-density brown aluminum oxide production process. The high-temperature precise crushing technology comprises the following steps of (1) carrying out high-temperature precise crushing on the brown aluminum oxide, and then officially entering a key smelting link, (2) completing smelting, pouring the smelted brown aluminum oxide melt into a pre-prepared specific mold, and carrying out primary solidification and crystallization by adopting a natural cooling mode, (5) carrying out hot process treatment on the brown aluminum oxide, and (6) carrying out grinding treatment on the brown aluminum oxide. Waste heat resources generated after brown aluminum oxide is smelted are fully utilized, when the materials are in a high-temperature state, the breakthrough of granularity control precision is achieved, and the hardness index reaches the Mohs hardness 9.0 level and is improved by 20% compared with a traditional material.

The invention relates to the technical field of magnetic separation and crushing, in particular to magnetic separation and crushing equipment for white corundum, which comprises a base, an outer cylinder and a crusher are arranged on the base, the outer cylinder has an inclined trend that the head is higher than the tail, and the outer cylinder consists of a front sealing plate, a rear sealing plate and a cylinder body. The device integrates the functions of crushing, precision screening, magnetic separation screening and discharging, and is high in automation degree and good in practicability; a double-channel parallel magnetic separation mechanism is adopted, and compared with traditional magnetic substance screening equipment, maximum utilization of magnet materials is achieved through the inner working interface and the outer working interface of the permanent magnet; according to the invention, the material flow is divided into the coarse sub-flow and the fine sub-flow according to the granularity, and the coarse sub-flow and the fine sub-flow are respectively subjected to independent magnetic separation, so that the material throughput of a unit channel is reduced, and the problem that the magnetic separation efficiency is reduced due to overhigh material throughput under the working condition of large treatment capacity is fundamentally solved; and the device can still keep a stable and efficient magnetic impurity removal rate under a high input load.

The invention relates to the technical field of refractory materials, in particular to an impervious heat-insulation refractory castable for an aluminum melting furnace and a preparation method of the impervious heat-insulation refractory castable. The refractory material comprises the following components in parts by weight: 20-30 parts of bauxite, 30-40 parts of corundum powder, 6-8 parts of zirconium oxide, 8-12 parts of modified graphite powder, 10-15 parts of silica powder, 3-6 parts of a binding agent and 1-5 parts of a water reducing agent. According to the refractory castable disclosed by the invention, the bauxite and the corundum powder are used as aggregates, so that the erosion of aluminum slag can be effectively avoided, and meanwhile, the wetting angle between the refractory castable and molten aluminum can be increased by adding the modified graphite powder, so that the refractory castable has good erosion resistance and heat insulation performance.

The utility model relates to corundum powder fine separation equipment, and belongs to the technical field of white corundum processing, the corundum powder fine separation equipment is relatively simple in overall structure, facilitates screening operation on white corundum powder, facilitates multi-stage screening operation on the white corundum powder compared with the prior art, is relatively good in screening effect, improves the usability, is relatively good in comprehensive usability, and is beneficial to popularization and application. Comprising a main bin body; the bin cover is matched with the main bin body and detachably connected to the main bin body through a limiting assembly. The mounting seat is fixedly connected to the bottom of the main bin body, and a driving motor is fixedly connected to the mounting seat; the connecting shaft is rotationally connected with the main bin body through a connecting ring, one end of the connecting shaft is fixedly connected with an output shaft of the driving motor, and the other end of the connecting shaft is fixedly connected with a connecting disc; the filtering bin is arranged on the connecting disc through a connecting assembly, and a plurality of mounting holes are formed in the circumferential outer wall of the filtering bin.

The application belongs to the technical field of refractory materials, and relates to a multi-metal composite magnesium-alumina spinel-containing refractory material and a preparation method thereof. The material of the magnesium-alumina spinel-containing refractory material is one of SiC-MgAl2O4, Al2O3-MgAl2O4 and MgO-MgAl2O4; the main body of components of the magnesium-alumina spinel-containing refractory material is granular SiC, Al2O3 and MgO as aggregate and a mixture of fine powder and micro powder composed of MgAl2O4 as matrix, and the components contain metal Al and Al-Mg alloy; the magnesium-alumina spinel-containing refractory material is prepared through hot air drying at 150-200 DEG C for 8-24 hours, and high-temperature sintering is not needed; the magnesium-alumina spinel-containing refractory material is a composite refractory material with alpha-SiC or corundum or periclase as main crystal phase and magnesium-alumina spinel as secondary crystal phase. The application realizes that the formed green body only needs to be treated at low temperature not higher than 200 DEG C, and can meet good mechanical properties, structural stability and corrosion resistance in a use temperature range of 25-1600 DEG C, and the built-in hot work thermal reserve can realize high mechanical strength and volume stability from normal temperature to the highest use environment through the waste heat in the oven heating process.

The invention relates to the technical field of refractory materials, and discloses an RH dip pipe castable and a production method thereof.The RH dip pipe castable is formed by mixing fused white corundum particles, sintered corundum, 90 alumina, a metamorphic-layer-free reclaimed material and the like as raw materials, by accurately controlling the adding amount of the raw materials, the advantages of the raw materials are fully exerted, and the production cost is lowered. The produced RH dip pipe castable has the characteristic of balanced performance, namely, proper demolding strength, is convenient to transport in the production process, a certain number of nanoscale micropores exist in aggregate and a matrix in the use process, generated cracks are small and few, a proper amount of slag can be adhered, the cracks can be bridged, and the RH dip pipe castable has the characteristics of high high-temperature breaking strength, good thermal shock performance, high strength, high strength, high strength and the like. And the effect of prolonging the service life of the RH dip pipe is remarkable.

The invention provides a preparation process of a high-performance refractory material based on regulation and control of a dolomite crystal form. The preparation process specifically comprises the following steps: step 1, weighing raw materials; step 2, pre-sintering the raw materials: respectively putting the weighed corundum, dolomite, quartz sand and mullite into a high-temperature furnace for high-temperature pre-sintering at the high-temperature pre-sintering temperature of 500-600 DEG C, heating and pre-sintering for 15-25 minutes, then taking out, and placing the pre-sintered corundum, dolomite, quartz sand and mullite clinker for later use; when the device is used, raw materials are pushed by the spiral auger to flow in the conveying holes from bottom to top, the thickness between the raw materials is reduced when the materials flow in the conveying holes, and the raw materials are matched with the heating columns on the inner walls of the conveying holes to achieve rapid temperature rising and heating; and the raw materials are pushed by the spiral auger to move upwards to the top of the fixed barrel to be stirred and mixed again.

This invention discloses a preparation process for low-porosity white fused alumina, comprising the steps of: (1) mixing white fused alumina particles with Al... 3+ Source, Zr 4+ After the source treatment solution is mixed and allowed to stand, the Al 3+ Source, Zr 4+ An excess of one of the sources. After completion, the white fused alumina particles are separated and placed in a mixed atmosphere of ammonia and water vapor for alkaline evaporation. Then, the obtained white fused alumina particles are calcined to obtain pretreated white fused alumina. (2) The pretreated white fused alumina is placed in a Fe solution containing the same molar ratio. 2+ Fe 3+ After mixing thoroughly in the treatment solution, the pretreated white fused alumina is allowed to stand. Once completed, the pretreated white fused alumina is separated and subjected to alkaline evaporation in a mixed atmosphere of ammonia and water vapor. The resulting pretreated white fused alumina is then calcined to obtain low-porosity white fused alumina. The above process of the present invention is suitable for post-treatment of finished white fused alumina with excessively high porosity, effectively reducing the porosity of this type of white fused alumina and improving its service life.

This invention discloses a cathode repair material for aluminum electrolytic cells and its preparation method. The repair material, on a dry basis, mainly consists of the following components by weight percentage: modified corundum 96.2%-98.0%, metallic silicon powder 0.5%-0.8%, passivated aluminum powder 0.5%-0.8%, nano-silica 0.6%-1.6%, rare earth mineral powder 0.4%-0.6%, and dispersant 0%-0.01%. The repair material of this invention can bond tightly with the graphite cathode, reducing crack formation and effectively improving erosion resistance, thereby extending the repair time.

The application belongs to the technical field of ceramic materials for nuclear waste treatment, and discloses a ceramic coating for a high-level nuclide glass solidification furnace and a preparation method thereof. Zirconium titanate powder, bentonite ultrafine powder, zirconia ultrafine powder, nano zirconia powder, nano titanium oxide powder and corundum ultrafine powder are mixed, and a composite binder, a coagulant, silicone resin and waterproof glue are additionally added to form a coating material, which is applied to the working surface of the glass solidification furnace lining refractory material to form a ceramic coating with strong adhesion and high hardness and excellent comprehensive performance. The ceramic coating can not only adsorb part of radioactive elements, but also resist the erosion of the glass melt to the lining refractory material, prevent the glass melt in the furnace from infiltrating into the lining refractory material, and block the pores and isolate the water vapor. The ceramic coating can form a viscous glass phase under high temperature, absorb part of the expansion amount of the lining refractory material under high temperature, and buffer the stress between the lining refractory materials, thereby prolonging the service life of the lining refractory material and the whole furnace.

The utility model belongs to the technical field of white corundum production, and particularly relates to an anti-splashing protection device in a white corundum production process, which comprises an anti-splashing protection box, a ceramic diversion trench is fixed at one end of the anti-splashing protection box, and the ceramic diversion trench is obliquely arranged; a sliding rail is fixed to the bottom of the splash-proof protection box, a sliding block is slidably installed on the top of the sliding rail, an assembling plate is fixed to the top of the sliding block, a ceramic forming mold is placed above the assembling plate, and when the assembling plate moves into the splash-proof protection box, the ceramic forming mold is located below the lower end of the ceramic flow guide groove. The anti-splashing protection box capable of fully surrounding the ceramic forming mold is arranged, and a water curtain is constructed on the inner wall of the anti-splashing protection box, so that molten materials can be quickly cooled and caked and fall outside the ceramic forming mold while splashing molten materials are blocked, the inner wall of the anti-splashing protection box does not need to be cleaned by shutdown, and the service life of the anti-splashing protection box is prolonged. And secondary sputtering is avoided while a good protection effect is achieved, and the safety coefficient is higher.

The invention relates to the technical field of optical temperature measurement materials, in particular to a preparation method, a temperature measurement method and application of an up-conversion fluorescence temperature measurement material based on Sc2W3O12. The chemical composition formula of the temperature measuring material is Sc2W3O12: x% Yb and y% Er, x is 10% + / -0.5%, and y is 4% + / -0.2%, and the method comprises the following steps: S1, weighing Sc2O3, WO3, Er2O3 and Yb2O3 according to the stoichiometric ratio; s2, adding absolute ethyl alcohol, grinding until the slurry is uniform, drying, and sieving to obtain a mixture; s3, the mixture is subjected to heat preservation at 500 DEG C for 2 h, residual ethyl alcohol and adsorbed water are removed, and a presintering treatment material is obtained; and S4, putting the pre-sintered material into a corundum crucible, sintering in an air atmosphere, naturally cooling, and grinding into powder to obtain the temperature measurement material. According to the up-conversion fluorescence temperature measurement material based on Sc2W3O12, it can be ensured that the luminous intensity is stable in the whole interval of 30-270 DEG C, the long-term temperature measurement requirement is met, only grinding, drying, pre-sintering at 500 DEG C and subsequent sintering are needed in the preparation process, the steps are simple, large-scale production is easy, and the application cost and the application threshold are reduced.

The white corundum particle grinding equipment comprises a shell, a base plate, a smashing device, a reaction stirring device, a standing module and a heat transfer system, the smashing device communicates with a feeding port, the reaction stirring device is located on the downstream portion of the smashing device, and the standing module is located on the downstream portion of the reaction stirring device and communicates with a discharging port; and the heat transfer system is arranged between the crushing device and the standing module. According to the white corundum particle grinding equipment, the crushing device and the reaction stirring device, ore crushed aggregates can be rapidly subjected to reaction treatment, the standing module can evaporate most moisture in ore pulp, so that the ore pulp can rapidly enter a drying procedure, the processing efficiency of the crushed aggregate mixing treatment equipment is improved, and the working efficiency is improved. And meanwhile, a heat transfer system is arranged, so that heat dissipated by the crushed ore can be used for compensating heat absorbed during dehydration of ore pulp, the energy utilization rate of the crushed ore mixing treatment equipment is increased, and the processing cost is reduced.

This application relates to a method and system for identifying defects in corundum-coated ground. The method constructs a first feature distribution and a second feature distribution based on image features from X-ray image samples. The first feature distribution refers to a comprehensive feature data distribution formed by fusion of valuable and conventional sample features through a weighted summation method. This balances the influence of different sample types on the feature space, and the combination of valuable and conventional samples can represent important information about the data distribution characteristics, accurately reflecting the data distribution. The second feature distribution represents the feature distribution of pixels. Combining the comprehensive expression of the two distributions and matching them in a database allows for the matching of a more accurate sample set of data distributions. Finally, based on the X-ray image samples and the matched sample set, the defect detection model is trained, improving the accuracy of the defect detection model training.

The invention discloses a wear-resistant and crack-resistant porcelain glaze which is mainly prepared from the following raw materials: 20-35 parts of zirconium silicate, 2-3 parts of zinc oxide, 6-15 parts of kaolin, 15-20 parts of potassium feldspar, 8-12 parts of spodumene, 5-8 parts of magnesium oxide, 9-16 parts of corundum and 6-12 parts of calcite. The invention discloses a preparation process of a wear-resistant and crack-resistant porcelain glaze, which comprises the steps of frit micro-crystallization treatment, optimization of the composition of frit glaze and heating, and at the same time, under the catalytic action of zinc oxide, the grain size of crystal grains separated out from zirconium silicate is smaller, and the prepared porcelain glaze is excellent in compactness and more uniform in coverage. Therefore, toughness, hardness and wear resistance are improved, and wear resistance and crack resistance of the glaze are guaranteed. Compared with the prior art, the prepared glaze layer has more excellent wear resistance and crack resistance.