53results about "Pot furnaces" patented technology

The utility model relates to the technical field of melting furnaces, in particular to a furnace bottom structure for an infrared optical glass melting furnace, which comprises a supporting plate part, a first heat insulation round brick, a furnace bottom supporting plate and a second heat insulation round brick, the first heat insulation layer is arranged between the first heat insulation round bricks and the bottom plate; the crucible fixing part comprises a second heat-insulating round brick nested on one side, deviating from the bottom plate, of the first heat-insulating round brick, a crucible support nested on one side, deviating from the bottom plate, of the second heat-insulating round brick, and a crucible claw group arranged on one side, deviating from the bottom plate, of the crucible support; and the eccentric opening penetrates through the crucible fixing part and the supporting plate part and is deviated from the center line of the furnace bottom structure. According to the utility model, the eccentric opening is formed in the furnace bottom structure, so that the straight channel pouring design of the vertical furnace is realized, the performance of a poured plastic solution is uniform and controllable, devitrification is not generated, and the yield of products is improved.

The invention discloses a high-zirconium brick as well as a preparation process and application thereof. The high-zirconium brick comprises the following components in percentage by weight: 65-99% of zirconium dioxide, 0.5-30.5% of aluminum oxide and 0.5-4.5% of yttrium oxide, titanium oxide, magnesium oxide, calcium oxide and silicon oxide in total. According to the method, heating and annealing cooling are controlled in a curve temperature control mode, all elements in the prepared high-zirconium brick are integrally uniform and free of segregation, the whole body density of the product is uniform and consistent, the defects of needle-shaped air holes, bubble retention, surface holes and the like do not exist, and the high-zirconium brick product prepared through the technological method is short in delivery cycle and can be produced in a customized mode.

The invention provides a graphite device capable of manufacturing a regular molten glass sheet, which comprises a graphite crucible and a graphite cover plug, and the graphite crucible and the graphite cover plug are combined for use when the regular molten glass sheet is manufactured. Molten glass sheets which are different in thickness and diameter and meet the measurement requirements of different analytical instruments can be manufactured by changing the specification and size of the graphite device, and a plurality of samples can be molten at the same time by combining an induction furnace manufactured in the patent of the invention CN115978995A, so that the working efficiency is greatly improved.

Methods for producing a glass that contains no bubbles with diameters of more than 0.1 mm and in which the occupied area fraction of bubbles with diameters of 0.1 mm or less is 0.05% or less, the methods including: placing raw material powders for at least one oxide of Si and a di- or higher-valent metal element in a container, mixing the raw material powders together and then melting the mixture by heating under reduced pressure to obtain a melt; pressurizing the melt in a He gas atmosphere, or heating the melt in an inert gas atmosphere other than a He gas atmosphere and then pressurizing the melt in the inert gas atmosphere; and cooling the melt.

The invention discloses a glass smelting device and method, and belongs to the technical field of optical glass manufacturing. The invention mainly solves the quality problems of poor product quality reproducibility, unstable optical property, high possibility of foreign matter defects and the like when an intermittent single crucible is used for melting optical glass. The melting furnace is mainly characterized in that the melting area is composed of a feeding port, a melting crucible, an isolation plate and a round bar; the working area consists of a material receiving bowl, a working crucible, a stirrer and a material leaking pipe; the connecting pipe is composed of a siphon pipe, an overflow pipe and a cooling cavity, the siphon pipe and the overflow pipe are connected between the side wall of the melting crucible and the material receiving bowl, and the cooling cavity is arranged on the overflow pipe; and a certain fall is formed between the melting crucible and the working crucible. The invention has the characteristics that the batch is fully melted in the melting crucible, completely flows to the working crucible through the cooperation of the overflow pipe and the siphon, and is fully clarified and homogenized in the working crucible, and is mainly used for melting optical glass with glass components easy to fly, volatilize and crystallize.

The invention provides an environment-friendly lanthanide optical glass preparation process and device, and belongs to the technical field of optical glass processing. Comprising a main platform, a hot melting bin is arranged at the end of the main platform, a crucible is fixedly connected into the hot melting bin, a sliding way is formed outside the main platform, and a baffle is fixedly connected outside the sliding way. By arranging the main platform, the annealing assembly and the recovery assembly, traditional optical glass preparation processes are integrated on one production line, extra labor cost and time cost caused by repeated carrying of glass raw materials are reduced, the annealing process is dispersed into three mutually independent stages, and the production efficiency is improved. And rapid annealing treatment is carried out according to the characteristics of the glass material, and meanwhile, waste heat in the annealing cooling process is reasonably recycled, so that the purposes of reducing energy consumption of smelting furnace raw material preheating, smelting furnace raw material preheating, reducing carbon dioxide emission, reducing the consumption of cooling water of an annealing furnace, reducing water resource consumption and the like are achieved.

The present application relates to a glass production device, including: a molding assembly, the molding assembly includes a molding table, and a molding trough is arranged on the molding table; a casting assembly, the casting assembly includes a crucible, and the crucible can be tilted and arranged above the molding trough; a calendering assembly, the calendering assembly includes a calendering roller, and the calendering roller is rollingly arranged on the molding table, and the rolling path of the calendering roller covers the molding trough. The present application can melt various components of niche color glass liquid through a crucible, and by pouring the glass liquid into the molding trough, flattening the glass liquid through a calendering roller and then annealing it to form a glass substrate, so as to meet the optical needs of a wide variety of electronic eye glasses, reduce the cost of glass production, and simplify the production process.

The utility model relates to the technical field of glass crucible kilns, and discloses a heat accumulating type glass crucible kiln which comprises a kiln body, a ceramic honeycomb body is fixedly connected to the kiln body, a crucible body is arranged in the ceramic honeycomb body in an attached mode, a top cover is fixedly connected to the top of the kiln body, a connecting frame is fixedly connected to the top of the kiln body, and the connecting frame is fixedly connected to the bottom of the kiln body. A first servo motor is started, a rotating box is used for stirring a to-be-melted glass material, so that the glass melting efficiency is improved to a certain extent, and meanwhile, a second servo motor is started, two rotating blocks rotate reversely, and a lifting piece ascends and descends in a reciprocating manner, so that the glass melting efficiency is improved to a certain extent. The limiting block is used for driving the plurality of jacking columns inserted into the top of the rotating box to do reciprocating lifting motion, so that under the rotation of the rotating box, through reciprocating lifting of the plurality of jacking columns, small bubbles can be eliminated in time when the materials are stirred and melted to generate the small bubbles, the formation of large bubbles is avoided, and the production efficiency is improved. Therefore, the solution forming and discharging efficiency is improved.

The invention relates to a process for producing an X-ray amorphous MAS glass body with a mass ≥ 3 kg and a surface area / volume ratio ≤ 1.5 cm⁻¹, comprising the process steps: a) preparing a powder mixture with 10 to 40 mol% MgO, 5 to 30 mol% Al₂O₃ and 40 to 70 mol% SiO₂ or precursors of these raw materials, as well as with auxiliary elements and foreign elements, wherein the auxiliary elements are elements of Group I and / or Group II and / or Group IV.Main group and / or Fe are, wherein a total content of the auxiliary and foreign elements of at least 10 ppm - 300 ppm, in particular at least 30 ppm - 150 ppm, particularly preferably at least 50 ppm - 100 ppm, is adjusted; b) Melting the powder mixture provided in step a); c) Cooling the melt produced in step b) and comminuting the cooled melt into particles with a diameter ≤ 10 mm; d) Heating and melting the particles obtained in step c); and e) Cooling the melt obtained in step d).

The application relates to the technical field of glass processing, and discloses an energy-saving and environment-friendly glass processing furnace, which comprises a three-section article moving mechanism and a rotary material pouring mechanism, is internally provided with a No. 2 rotating shaft which is installed directly above the three-section track and can rotate, a driving wheel which rotates with the No. 2 rotating shaft and can drive the driven wheel to rotate, a driving motor which is fixedly installed on one side of the No. 2 rotating shaft and can drive the No. 2 rotating shaft to rotate, and a friction driving disc which can control the linkage torque between the driving motor and the No. 2 rotating shaft. The energy-saving and environment-friendly glass processing furnace can automatically take out the heating crucible from the inside of the furnace body heat preservation outer cylinder and pour out the glass solution. Since the purpose is achieved by controlling the driving motor throughout the process, the safety hidden danger in the material taking and pouring process is reduced.

This invention provides a glass flake preparation apparatus, comprising, from top to bottom, a dipping module, a blowing module, and a crushing module. The dipping module includes a blowing head, a guide rail, and multiple crucibles. The blowing head has a slider that slides laterally downwards on the guide rail. The slider is fixedly connected to the blowing head via a telescopic rod, driving the blowing head to dip downwards. The multiple crucibles are arranged below the guide rail along its direction. The blowing module includes a funnel-shaped blowing cylinder and a valve. The valve is located at the bottom outlet of the blowing cylinder, and a blowing port is opened at the top of the blowing cylinder. The crushing module includes a receiving cylinder and a crusher. The crusher is located below the inlet of the receiving cylinder. The advantages of this invention are: it achieves a technological breakthrough in the efficient preparation of glass flakes with various compositions on the same device, integrating glass melting, blowing, and crushing processes into one device, and effectively avoiding the problem of glass flake powder flying everywhere during the crushing process.

The invention discloses a method for preparing oxide glass based on an induction melting process and the oxide glass, the preparation method comprises the following steps: using a composite crucible to bear initial glass powder, the composite crucible comprises a first oxide layer, a conductive material layer and a second oxide layer which are arranged from outside to inside, a gap is formed between the second oxide layer and the conductive material layer, the composite crucible further comprises a protective felt, the gap is filled with the protective felt, the protective felt wraps the outer side of the second oxide layer, the protective felt is of a fiber structure, and the melting point of the protective felt is not lower than that of the initial glass powder; the initial glass powder is heated to a molten state through electromagnetic induction, a melt is obtained, the heating power in the first stage is in positive correlation with the heating time, and the heating power in the second stage is in a decreasing trend; and carrying out casting molding on the melt, and cooling to obtain the oxide glass.

The utility model discloses a moving and overturning device for a glass experiment. The moving and overturning device comprises a moving carrier, an overturning platform, a limiting plate and a clamp, the movable carrier is installed on the limiting plate, the overturning platform is rotatably installed on the movable carrier through a rotating shaft, a bottom plate is arranged at the bottom of the overturning platform, a bottom face heat insulation plate is arranged on the bottom plate, a first vertical plate is arranged on one side of the overturning platform, second vertical plates are connected to the two sides of the first vertical plate, and a first vertical face heat insulation plate is arranged on one side of the first vertical plate. A second vertical face heat insulation plate is arranged on one side of the second vertical plate, the first vertical plate and the second vertical plate form a U-shaped frame, and one end of the clamp is supported on the movable carrier. According to the utility model, the platinum crucible and the lining thereof can be quickly moved out of the heating furnace platform through the moving and turning device, and molten materials are quickly poured into a preset sample preparation mold by using the turning platform, so that the success rate of sample preparation of the large-capacity platinum crucible is improved, and the safety risk in the process is reduced.

The utility model discloses a smelting device for glass processing, which comprises a support frame, a fixing mechanism is arranged on the support frame, the fixing mechanism comprises a rotating mechanism, a fixing block, a friction disc, an inner sleeve, a telescopic rod, a handle, a push spring, a fitting plate and an adjusting mechanism, the rotating mechanism is connected to the support frame and the fixing block in a matched manner, and the friction disc is arranged on the inner sleeve. The friction disc is rotationally connected into the fixing block, the inner sleeve is installed in the fixing block, the fixing mechanism achieves accurate fixing of the angle of the friction disc through the design of the rotating mechanism and the fixing block, when the angle of the friction disc needs to be fixed, a handle is pushed, a telescopic rod slides upwards along with the rotating mechanism, and a push spring and an attaching plate abut against the friction disc. By means of the design, the convenience of operation is improved, the stability of the friction disc in the smelting process is guaranteed, unsmooth or accidental pouring of raw materials caused by angle change is avoided, and therefore the production efficiency and safety are improved.

The invention discloses a stirring and cooling device for a crucible furnace, a stirring system and a cooling control method, the stirring and cooling device adopts a water cooling bag with a water cooling cavity inside to surround a motor through an accommodating cavity, and flowing cooling water is provided for the water cooling cavity through a water inlet pipe and a water outlet pipe to take away heat of the water cooling bag and maintain a relatively low temperature; therefore, the motor is cooled and protected, and the problem that the temperature of the motor is too high due to the fact that the motor is easily affected by the crucible furnace can be effectively solved. As for the water supply structure, a first thermometer and a second thermometer are arranged on the water return pipe and the water supply pipe respectively, an adjusting valve is arranged on the water supply pipe, the difference value between the water supply temperature and the water return temperature can be obtained through the first thermometer and the second thermometer during use, and when the difference value is large, the water supply flow can be increased through the adjusting valve; and the retention time of the low-temperature cooling water in the water cooling cavity is shortened, and the difference value is maintained in a relatively low range, so that the cooling protection effect of the water cooling bag on the motor is ensured.

The utility model discloses a pilot plant test furnace platinum crucible for glass ceramic production, which comprises a melting pot body, an omega-shaped expansion structure is arranged in the circumferential direction of the pot body, a split pot cover is arranged above the melting pot body, a discharge pipe is connected below the melting pot body, a grating filter screen with a V-shaped structure is arranged inside the melting pot body, a bubbling pipe is arranged on the split pot cover, and the bubbling pipe is connected with a nozzle. An electrode is arranged at the bottom of the discharging pipe; the problems of thermal stress deformation and fatigue cracking caused by alternate cooling and heating are effectively solved by arranging an omega-shaped expansion structure and a grid filter screen of a V-shaped structure on the periphery of the melting pot body, the problems that a traditional barrel-shaped platinum crucible is prone to thermal shock deformation and cracking and the like are solved, the blowing-out maintenance and shaping frequency is reduced, the service life is remarkably prolonged, and the production cost is reduced. And under the condition of the same volume, the usage amount of platinum is reduced by more than 20% compared with that of a traditional barrel-shaped platinum crucible, and the manufacturing cost of the platinum crucible is remarkably saved.

The invention relates to a method for producing MAS glasses, characterized in that 10 mol.% to 40 mol.% of MgO, 5 mol.% to 30 mol.% of Al2O3 and 40 mol.% to 70 mol.% of SiO2 or precursors of these raw materials are mixed, the mixture is melted, the melt is cooled and comminuted into particles having a diameter of less than 10 mm, preferably less than 5 mm, particularly preferably less than 2 mm, the particles are heated and melted, and the melt is cooled. The invention also relates to a MAS glass obtainable according to this method, to a component comprising this MAS glass and to the use of this component.

The present invention describes a method for producing MAS glass, characterized by mixing 10 to 40 mol % MgO, 5 to 30 mol % Al2O3, and 40 to 70 mol % SiO2 or precursors of these raw materials, melting the mixture, cooling the melt, crushing the mixture into particles with a diameter of less than 10 mm, preferably less than 5 mm, particularly preferably less than 2 mm, heating and melting the particles, and cooling the melt, as well as an MAS glass obtainable by this method, a component comprising MAS glass, and the use of such a component.

A glass composition which comprises main components consisting of, in % by mass: 50-80% of TeO2; 0-30% of Bi2O3; 0-30% of WO3; 0-30% of ZnO; 0-30% of BaO; 0-30% of GeO2; and 0-30% of Ga2O3, and to which at least one of the following elements to be added is introduced: 1-1000 mg / kg of Si4+; 1-1000 mg / kg of B3+; 1-1000 mg / kg of P5+; 1-1000 mg / kg of Li+; 1-1000 mg / kg of Na+; 1-1000 mg / kg of K+; 1-1000 mg / kg of Mg2+; 1-1000 mg / kg of Ca2+; and 1-1000 mg / kg of Al3+.

The melting of glass using microwave heating is a relatively new development and has been tested in laboratory-scale glass production. Various glass systems in the temperature range of 1200 - 1500 °C using MW heating have been implemented as alternative heating methods. These glass systems containing SiO2, B2O3, and P2O5 as the main components of various special-purpose glass matrices have been melted. In small-scale glass melting by microwave heating, the required electrical energy is significantly reduced, and 50 - 75% of the energy is saved. Furthermore, the total time of glass melting is dramatically shortened due to a faster heating rate and volumetric heating. The OH concentration has been found to be lower in barium borosilicate glass and zinc borate glass prepared by microwave heating. A higher Fe 2+ being retained may have the potential to be applied in the development of IR-absorbing glass.

The utility model provides a frit high-temperature melting device with a protective structure, which comprises a shell assembly, a crucible furnace and a shell cover, the shell assembly comprises a base and a shell body, the upper side surface of the base is provided with the shell body, the base is internally provided with an accommodating cavity, and the base and the shell body are internally provided with gas pipes; the shell assembly comprises a shell body, a gas pipe is installed in the shell body, a gas head is installed on the surface of the outer side of the gas pipe, a first fixing frame and a second fixing frame are installed in the shell body, and a crucible furnace is installed in the shell body through the first fixing frame and the second fixing frame. The shell body provides a physical barrier for the crucible furnace in the shell body, damage caused by collision and impact of external objects to the crucible furnace is prevented, the shell cover and the stirring assembly are arranged, so that frit can be heated more evenly in the high-temperature melting process, the melting speed is increased, and the melting efficiency is improved.

The present invention relates to a method and apparatus for preparing large-sized, low-bubble gas-melted quartz glass ingots, belonging to the technical field of quartz glass production. In the present invention, quartz sand raw materials are simultaneously fed by multiple oxyhydrogen burners. The oxyhydrogen flame ejected from the oxygen connecting pipe of the oxyhydrogen burner 4 melts into quartz glass liquid in a crucible. The simultaneous feeding of the multiple oxyhydrogen burners ensures the high temperature of the glass liquid in the crucible, further removes microbubbles and flocs in the glass liquid, and increases the feeding volume, thereby improving production efficiency. The crucible can help quartz glass liquid at a higher temperature condense and form, allowing the glass liquid in the crucible to be formed in one step, saving the existing thermal modification process and reducing the production cycle and cost. This solves the problem of impurity defects such as gas-liquid inclusions in the existing quartz sand structure, which causes the melted quartz glass to contain a large number of microbubbles and flocs, greatly reducing the quality of the quartz glass product.

The utility model relates to the technical field of 3D (three-dimensional) glass printer accessories, and discloses a quick-release crucible and nozzle device, a glass smelting furnace is fixedly mounted at the top of a glass annealing furnace, a glass crucible is arranged in the glass smelting furnace, a communicating pipe is arranged at the bottom of the glass crucible in a penetrating manner, and a nozzle is arranged in the communicating pipe. A limiting plate is fixedly mounted at the top of the communicating pipe, a locking nut is in threaded connection with the outer side of the communicating pipe, a high-temperature nozzle is detachably mounted at the bottom of the communicating pipe, and a fixing ring is fixedly mounted on the outer side of the high-temperature nozzle. The threaded plug is driven by a tool to retreat in the threaded groove, the pushing force of the spring is reduced, then the locking force between the insertion block and the annular clamping groove is reduced, and then the whole high-temperature nozzle can be disassembled by holding the fixing ring and pulling the fixing ring downwards. And after the communicating pipe is cooled, the locking nut is detached from the communicating pipe, and then the communicating pipe is pushed out of the glass crucible, so that the glass crucible is conveniently detached in the process.

To provide a composition for mid-infrared light transmitting glass that can be formed into a lens that has excellent optical properties and secures all of excellent physical properties, and a method for preparing the same.SOLUTION: A composition for glass allows passage of light in a mid-infrared wavelength band by a preset reference value or more, wherein the composition for glass includes preset contents of TeO2, BaO, ZnO and a dopant that changes optical properties of glass.SELECTED DRAWING: Figure 1

This invention relates to a method for manufacturing X-ray amorphous MAS glass, the X-ray amorphous MAS glass having: a mass ≥3 kg and a surface area-to-volume ratio ≤1.5 cm². ‑1 The method comprises the following steps: a) preparing a powder mixture having 10 to 40 mol% MgO, 5 to 30 mol% Al2O3 and 40 to 70 mol% SiO2 or precursors of these raw materials, and having auxiliary elements and foreign elements, wherein the auxiliary elements are elements of Group I and / or Group II and / or Group IV and / or Fe, wherein the total content of the auxiliary elements and foreign elements is set to at least 10 ppm to 300 ppm, especially at least 30 ppm to 150 ppm, particularly preferably at least 50 ppm to 100 ppm; b) melting the powder mixture prepared in step a); c) cooling the melt prepared in step b) and pulverizing the cooled melt into particles with a diameter ≤10 mm; d) heating and melting the particles obtained in step c); and e) cooling the melt obtained in step d).

The invention discloses a tool for measuring the liquid level of substrate glass and a using method of the tool, and belongs to the technical field of substrate glass manufacturing. According to the tool for measuring the liquid level of the substrate glass, the problem that the moving stability of the probe is insufficient when the liquid level of the substrate glass is measured is solved. The tool for measuring the liquid level of the substrate glass comprises the supporting device, the sleeve and the probe, the sliding way is arranged on the sleeve, the outer diameter of the sleeve is smaller than the diameter of the liquid level measuring hole of the substrate glass, the probe is tightly attached to the sliding way when moving, a path is planned for movement of the probe, shaking of the probe in the moving process can be effectively avoided, and the measuring accuracy is improved. The probe is prevented from mistakenly touching the wall of the glass liquid level measuring hole of the substrate during moving, so that the moving stability of the probe is ensured, and the measuring quality is ensured.

A copper ion-doped polychromatic fluorescent glass and a preparation method and use thereof are provided. The fluorescent glass has a chemical formula shown as the following: aP2O5-bSiO2-cZnO-dCs2CO3-eNaCl-fCuCl, wherein a, b, c, d, e, and f in the formula represent the molar coefficients of compounds, wherein a is 45 to 65, b is 10 to 30, c is 1 to 5, d is 5 to 20, e is 5 to 20, f is 0.1 to 5. The fluorescent can achieve blue, orange and near-infrared photoluminescence under the UV light with higher fluorescent quantum yield.

The invention discloses a high-zirconium brick as well as a preparation process and application thereof. The high-zirconium brick comprises the following components in percentage by weight: 40-99% of zirconium dioxide, 0.1-60% of aluminum oxide, and 0.1-40% of the sum of the weight of yttrium oxide, ferric oxide, titanium oxide, magnesium oxide, calcium oxide and silicon oxide. According to the method, heating and annealing cooling are controlled in a curve temperature control mode, all elements in the prepared high-zirconium brick are integrally uniform and free of segregation, the whole body density of the product is uniform and consistent, the defects of needle-shaped air holes, bubble retention, surface holes and the like do not exist, and the high-zirconium brick product prepared through the technological method is short in delivery cycle and can be produced in a customized mode.

The invention provides a device and a method for preparing 5N high-purity fused quartz powder from natural quartz ore, and relates to the technical field of fused quartz powder equipment.The device comprises a furnace body, the furnace body is placed on the ground through a support, the furnace body is driven by a motor to rotate, and the motor is fixedly connected with the support; the crucible is arranged on the machine body and is used for melting quartz sand ore; the stabilizing device is arranged on the support and used for clamping and fixing a container for collecting the quartz sand ore molten liquid and preventing the container from displacing after being impacted, the container for collecting the molten liquid can be placed and reinforced by arranging the stabilizing device, and the situation that the container is damaged after the molten liquid is poured into the container is reduced; the device solves the problems that the container is impacted by the melt to displace, so that the poured melt deviates from the container, the melt cannot be accurately put into the container, and the melt collecting effect is affected, and the placing stability of the container is improved.