48 results about "Glass melting" patented technology

This invention discloses a method and system for monitoring the liquid glass level in a furnace during substrate glass preparation, belonging to the field of substrate glass manufacturing technology. It solves the technical problem that existing technologies cannot achieve real-time monitoring and adjustment of the liquid glass level in a substrate glass furnace to ensure its stability. The method involves collecting weighing data of glass powder and substrate glass, and calculating the theoretical height of the liquid glass level in the furnace. Subsequently, a glass volume conversion coefficient is set, and the actual liquid glass level is manually measured. The theoretical and actual liquid glass levels are compared to correct the volume conversion coefficients for melting glass powder and substrate glass. By comparing the difference between the theoretical and target liquid glass levels, the feeding frequency of the feeding system is adjusted, thereby achieving adjustment and stability of the liquid glass level in the substrate glass furnace.

This utility model discloses an electrode brick structure for a substrate glass melting furnace, relating to the technical field of glass electric melting furnaces. It includes a furnace body and an oxy-fuel combustion system. The oxy-fuel combustion system includes an oxygen supply mechanism and a heating mechanism. The heating mechanism includes an electrode brick, a support assembly, and a propulsion assembly. A slot is formed on the side of the furnace body, and the electrode brick is slidably disposed within the slot. Both the support assembly and the propulsion assembly are fixedly connected to the furnace body, with the support assembly located at the bottom end of the slot and abutting against the electrode brick. The propulsion assembly is used to push the electrode brick to slide within the slot. During the operation of the substrate glass melting furnace, by setting up the propulsion assembly, when the electrode brick's heating power decreases due to erosion, it can be further pushed into the furnace, maintaining effective contact with the molten glass, continuously providing sufficient heating power, ensuring stable operation of the glass melting furnace, and avoiding the impact of insufficient power on glass production quality and efficiency.

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 present invention relates to a waste gas treatment method, a waste gas treatment apparatus, a glass article manufacturing apparatus, and a glass article manufacturing method. The waste gas treatment method of the present invention has: a glass melting step ST1; a cooling step ST2 in which a cooling liquid is brought into contact with waste gas to obtain cooled waste gas; a powder recovery step ST3 in which a powder of an alkali metal salt, or an alkaline earth metal salt or an alkaline earth metal base is brought into contact with the cooled waste gas to obtain contacted waste gas, and a reaction product of the cooled waste gas and the powder is recovered as a powder; and a waste liquid treatment step ST5 in which a cooling liquid is brought into contact with the contacted waste gas to obtain purified gas, and a reaction liquid of the contacted waste gas and the cooling liquid is recovered as a waste liquid, in the waste liquid treatment step ST5, a treatment liquid is prepared by adjusting the waste liquid to have a pH of 5 to 9 and a temperature of 40°C or higher, and the treatment liquid is fed back to the cooling step ST2, and in the cooling step ST2, the treatment liquid is brought into contact with the waste gas.

The application relates to a preparation method of a rare earth-carbide composite phase-containing anti-pollution flashover tempered glass substrate, and relates to the technical field of tempered glass preparation. Rare earth oxides, carbide powder and grinding aids are mixed to obtain a rare earth-carbide composite powder; base raw materials, the rare earth-carbide composite powder, fluxing agents and clarifying agents are mixed to obtain mixed raw materials; the mixed raw materials are sent into a glass melting furnace for melting, argon is introduced for stirring, and clarification is carried out; the clarified glass liquid is injected into a mold for pressing and forming, and after demolding, the glass is sent into a tempering furnace to obtain a tempered glass intermediate to obtain the rare earth-carbide composite phase-containing anti-pollution flashover tempered glass substrate; the application can effectively improve the internal stress distribution of the glass, reduce defects, and improve the bending strength and pollution flashover voltage of the tempered glass.

A glass melting furnace 1 comprises: four first single-phase AC power sources 5; four second single-phase AC power sources 6 that have phases different from those of the first single-phase AC power sources 5; a first electrode group 8 that is formed of eight first electrodes 7 arranged on a bottom wall 1a in a 4-row by 2-column matrix; and a second electrode group 10 that is formed of eight second electrodes 9 arranged on the bottom wall 1a in a 4-row by 2-column matrix at positions different but adjacent to the first electrode group 8. Two terminals o, u that form a pair in each of the first single-phase AC power sources 5 are included in different columns in the first electrode group 8, and are connected to two of the first electrodes 7 arranged at two of the every other positions in the column direction Y. Two terminals о', v that form a pair in each of the second single-phase AC power sources 6 are included in different columns in the second electrode group 10, and are connected to two of the second electrodes 9 arranged at two of the every other positions in the column direction Y.

This invention discloses a preparation process for high-zircon content zircon bricks, belonging to the field of refractory materials technology. This process aims to solve the technical problem of the inability to achieve low-temperature full densification of zircon materials due to their easy decomposition at high temperatures during traditional sintering. The main steps include: firstly, preparing active zircon micropowder with high lattice strain energy through high-energy grinding; secondly, using heterogeneous agglomeration technology to coat the active micropowder onto the surface of inert coarse aggregate, constructing a "core-shell" structure granulated material; and finally, performing low-temperature solid-state sintering below the decomposition temperature, utilizing the distortion energy stored in the active micropowder to drive densification. This process simultaneously controls amorphization degree, Zeta potential, debinding oxidation, sintering atmosphere, and cooling regime. This invention successfully prepares high-density, high-strength, highly erosion-resistant, and glass-phase-free high-performance zircon bricks, suitable for harsh environments such as glass melting furnaces, while completely avoiding the thermal decomposition of zircon.

This invention discloses an intelligent temperature control system for glass melting furnaces based on multi-parameter collaborative optimization, relating to the field of furnace temperature control technology. The system includes: acquiring multi-source operating parameters of the glass melting furnace and images of the furnace charge surface to construct a unified time-scaled operating condition sequence; extracting charge coverage information and combining it with the feed mass flow rate, glass melt level changes, and drawing speed changes to construct material endothermic state parameters; sequentially executing feedforward endothermic trigger judgment, back-end thermal diversion judgment, and composite coupling judgment to output the current control mode; and generating joint control quantities according to the control mode and correcting the temperature control parameter set. This invention achieves early identification of material-side endothermic drag, hierarchical differentiation of temperature deviation sources, and collaborative control and continuous adaptive correction of multiple channels, improving the feedforward nature, targeting, and stability of furnace temperature control.

The invention pertains to an electrical booster heating system for a glass melting tank (2), the electrical booster heating system (1) comprising at least: - at least one electrode set (R1 / S1; S2 / T2; R3 / T3) comprising a first electrode device (E1 / E2; E3 / E4; E9 / E10) and a second electrode device (E5 / E6; E7 / E8 E11 / E12), both electrode devices (E1 / E2; E3 / E4; E9 / E10; E5 / E6; E7 / E8 E11 / E12) being assigned to a phase (R,S,T) of an electrical power supply (Q1,Q2,Q3) - the electrode devices (E1 / E2; E3 / E4; E9 / E10; E5 / E6; E7 / E8 E11 / E12) each pass through a peripheral boundary wall (3; 4) of the glass melting tank (2) and, during operation of the glass melting tank (2), are surrounded by a glass melt (2B) present in an interior (2A) of the glass melting tank (2) with a first, tank-inner- side free end (20) of the electrode device (E1 / E2; E3 / E4; E9 / E10;E5 / E6; E7 / E8 E11 / E12) and are connected to the power supply (Q1,Q2,Q3) with a tank-outer- side end (21), - the glass melt (2B) connects the free ends (20), on the inside of the tank, of the first and second electrode devices (E1 / E2; E3 / E4; E9 / E10; E5 / E6; E7 / E8 E11 / E12) in an electrically conductive manner to form an electric circuit, characterized in that each electrode device (E1 / E2; E3 / E4; E9 / E10;E5 / E6; E7 / E8 E11 / E12) is formed from an at least electrically paired arrangement of at least two individual electrodes (E1 to E12), wherein, to form the electrically paired arrangement of the two individual electrodes (E1 to E12) of the respective electrode devices (E1 / E2; E3 / E4; E9 / E10; E5 / E6; E7 / E8 E11 / E12), the two individual electrodes (E1 to E12) of the electrode device (E1 / E2; E3 / E4; E9 / E10; E5 / E6; E7 / E8 E11 / E12) have the same electrical potential.

The application provides a glass melting furnace flue gas fine arsenic removal coupled with denitration purification device and method, and relates to the technical field of environmental protection and flue gas treatment. The glass melting furnace flue gas fine arsenic removal coupled with denitration purification device provided by the application comprises a heat exchanger, a first-stage quenching tower, a second-stage quenching tower, a filtering device, a power wave washing device, a demister and an NH3-SCR denitration tower. Through the combined process of "quenching arsenic precipitation-power wave deep arsenic capture-heat exchange temperature rise-NH3-SCR denitration", the application realizes the synergistic and efficient purification of As2O3 and NO x , achieves the purposes of fine arsenic removal and denitration (As2O3≤0.5mg / Nm 3 , NO x ≤100mg / Nm 3 ), and the flue gas meets the standard emission of "Glass Industry Air Pollutant Emission Standard" (GB 26453-2022), has low operation energy consumption, zero emission of waste water recycling, and provides a flexible and efficient solution for glass melting furnace flue gas purification.

To provide a method for manufacturing molten glass that can further reduce the delay in melting of the glass raw material composition during the glass melting process. [Solution] A method for producing molten glass having a glass composition containing SiO2 and Al2O3 by melting a glass raw material composition containing silica sand, aluminum oxide, and an alkali metal source, wherein the silica sand has a D90 of more than 600 μm, and the aluminum oxide has a D90 of 200 μm or less. The glass composition preferably has an oxide-based content of SiO2 of 50 mol% or more, an Al2O3 content of 5 mol% or more, and a total content of Li2O, Na2O, and K2O of 5 mol% or more.

The utility model relates to refractory production technical field discloses a kind of steel structure dome mould for masonry glass melting furnace big dome brick, comprising: circular arc mechanism, play the role of fixed support;Support mechanism, it is installed in the inside of circular arc mechanism, for supporting big dome brick;The support mechanism includes the internal thread connection of the first nut has inner hexagonal bolt, one end of the inner hexagonal bolt is provided with steel ball;Horizontal mechanism, for supporting arc support mechanism;The horizontal mechanism includes two support channel steel;Stabilizing mechanism, it is installed in the inside of horizontal mechanism, for supporting stable horizontal mechanism.In the utility model, by the first nut of multiple is fixed in the position of arc angle steel round hole lower surface, by inner hexagonal bolt is rotated and inserted into the first nut, adjust the distance between and big dome brick, by inner hexagonal bolt movement push steel ball movement and big dome brick contact, by the rolling of steel ball reach the effect of conveniently moving big dome brick.

The utility model discloses a stress buffer structure of leadless glass ring seal joint of titanium cup mouth part, including the mechanism that holds, the mechanism that holds includes titanium cup, the top of titanium cup is provided with annular wave groove, the inside wall of annular wave groove has sprayed transition coating, the top of titanium cup is equipped with glass ring, glass ring bottom is compatible with annular wave groove. In the utility model, the annular wave groove is formed through precision numerical control processing or laser etching at the cup mouth position of titanium cup, then the transition coating of silicon oxide is plated on the inside wall of annular wave groove by using chemical vapor deposition, then the molten glass ring is buckled on the top of annular wave groove, thereby completing the sealing operation, in the whole sealing process, annular wave groove prevents stress concentration, then the transition coating guarantees the wettability of glass melting and titanium, effectively buffers stress, and the product quality is stable.

The present invention relates to a method for melting vitrifiable material for manufacturing plate glass, the method comprising: (i) preparing a furnace comprising at least one main melting tank equipped with an electric heating means, at least one auxiliary melting tank, a refining tank equipped with an oxygen combustion heating means, and a neck separating the main melting tank and the refining tank; (ii) charging the vitrifiable material, comprising raw materials and cullet, into the main melting tank and / or auxiliary melting tank, wherein the total amount of cullet is at least 10% by weight of the vitrifiable material; and (iii) heating with the electric heating means to melt the main melting tank. (iv) a step of melting the vitrifiable material in a tank and flowing it through a neck to a purification tank; (v) a step of melting at least a portion of the cullet in an auxiliary melting tank and flowing it through a neck or a purification tank, wherein the electrical input ratio is in the range of 50% to 85%; (v) a step of purifying the molten material in the purification tank by heating in an oxygen combustion heating means supplied with gas and / or hydrogen; (vi) a step of flowing the molten material from the purification tank to a work zone; (vii) a step of capturing CO2 from exhaust gas having a CO2 concentration of at least 35%, comprising a step of compression and / or dehydration.

The present application relates to the technical field of glass processing, and specifically discloses an automatic feeding glass melting furnace, which comprises a furnace body, and a feeding port is arranged on the furnace body; a feeding unit is arranged on one side of the furnace body, and the feeding unit comprises a hopper, a conveying belt connected with the feeding end of the hopper, and a transfer piece connecting the discharging end of the hopper and the feeding port; guide pieces are symmetrically arranged on both sides of the hopper, trigger pieces are movably arranged on the guide pieces, and a bag breaking and material shaking piece is arranged in the hopper; the conveying belt is used for conveying a bag filled with quartz sand, and a plurality of supporting rods for supporting the bag are rotatably arranged above the hopper. When the conveying belt drives the bag to enter the feeding end of the hopper, the trigger pieces move synchronously with the bag under the action of the guide pieces, the bag breaking and material shaking piece is triggered to penetrate into the bag from the bottom of the bag, and the bag breaking part is pried open and shaken, so that the residual quartz sand is effectively shaken off, the waste of materials is avoided, the risk of scratches caused by manual bag breaking is reduced, and the working environment is improved.

The application relates to the technical field of sample melting machine equipment, in particular to a mold device for a high-frequency induction heating equipment and the high-frequency induction heating equipment; the mold device comprises a mold crucible assembly, a rotating mechanism and a jacking mechanism. The mold crucible assembly is composed of a mold crucible, a ceramic supporting cylinder and a mold coil, wherein the mold crucible is supported on the ceramic supporting cylinder, and the mold coil is wound around the outer periphery of the supporting cylinder. The rotating mechanism comprises a supporting plate and a rotating piece and is used for driving the mold crucible to rotate. The jacking mechanism is connected with the supporting plate and can drive the rotating mechanism to move up and down. The mold device can accurately control the position of the mold crucible entering and leaving the mold coil through the jacking mechanism, and can realize uniform smelting liquid spreading and exhaust through the rotating function of the rotating mechanism, effectively solves the problem of poor forming quality caused by uneven smelting liquid pouring speed and poor gas exhaust in the traditional sample melting equipment, and can significantly improve the forming quality of glass melting pieces by using the mold device.

The utility model relates to a defoaming agent liquid supply technical field especially relates to a kind of metering pump defoaming agent system and equipment for glass melting, it includes at least one group main liquid supply pipeline, auxiliary liquid supply pipeline and control system, the import end of main liquid supply pipeline is communicated with the liquid supply pipe of defoaming agent, and export end is connected with defoaming gun;One end of auxiliary liquid supply pipeline is communicated with the liquid supply pipe of defoaming agent, and the other end is connected main liquid supply pipeline connection;By main liquid supply pipeline cooperation auxiliary liquid supply pipeline, realize on-line different line replacement, overhaul the fittings of main liquid supply pipeline, while, cooperate the setting of metering pump a, realize the supply of defoaming agent is completed by pressureless tank liquid supply, solve the technical problems, such as the inconvenience of pressure vessel storage overhaul in prior art affects normal production.

This utility model relates to the field of refractory materials for glass industrial furnaces, and discloses a large archway for a glass melting furnace. It includes a left archway brick group, a right archway brick group, and an interlocking archway brick group located between the left and right archway brick groups. The key feature is that both the left and right archway brick groups are composed of multiple composite archway bricks arranged sequentially. Each composite archway brick includes an outer load-bearing brick and an inner anti-corrosion brick located below the outer load-bearing brick. The outer load-bearing brick and the inner anti-corrosion brick are detachably connected, and an expansion gap exists between them. This glass melting furnace archway uses composite archway bricks with an outer and inner layer brick in both archway brick groups, and the inner layer brick of the composite archway brick has anti-corrosion properties. Simultaneously, the expansion gap between the outer and inner layer bricks gives the glass melting furnace archway thermal expansion decoupling capabilities, significantly reducing stress cracks caused by thermal expansion.

The utility model discloses a kind of middle section connecting structure of glass production heating rod, including electric fluxing heating rod, electric fluxing heating rod is composed of L type heating rod and I type heating rod, I type heating rod is installed in L type heating rod one end below, L type heating rod and I type heating rod connecting place outside is equipped with protective cylinder cover, protective cylinder cover bottom is equipped with limit round plate, limit round plate is fixedly connected with I type heating rod, protective cylinder cover is made of zirconium oxide, protective cylinder cover one end inside is fixedly provided with annular limit block, annular limit block is clamped in I type heating rod top connecting place, L type heating rod other end is connected with power supply equipment, I type heating rod is inserted into glass melting furnace;The utility model has the advantages of improving heating rod anticorrosion effect, prolonging service life, reducing downtime maintenance frequency etc.

Disclosed is a flue gas heat recovery system and method for a glass melting furnace. In a first stage, the sensible heat of the flue gas is reduced in a regenerator or by use of high electric energy input in a hybrid electric furnace. In a second stage, the flue gas is used in a heat transfer fluid heater to provide heat to a heat transfer fluid. In a third stage, the heat transfer fluid provides heat to a batch / cullet preheater (BCPH) to preheat batch and / or cullet in an indirect heat exchanger such as a screw heat exchanger.

To provide a technology that improves heating power (W) for molten glass having high electrical resistivity.SOLUTION: A glass melting apparatus includes: a dissolver for storing a glass raw material and molten glass that is made by melting the glass raw material; and a plurality of electrodes for electrically heating the molten glass. The molten glass has an electrical resistivity of 0.5 Ωm or more at 1600°C. The plurality of electrodes forms an energization passage having a shortest distance of 1800 mm or less.SELECTED DRAWING: Figure 5

The invention relates to a method for hot repairing a region to be repaired (301, 302, 303) inside a glass melting furnace (10), the region to be repaired being at a temperature higher than 300° C., said method comprising the following steps: •a) installing an inner formwork (32i) in a service position, so as to produce a mold around the region to be repaired; •b) filling the mold with a repair product (41), at least part of the inner formwork being made of a ceramic matrix composite (CMC).

This utility model discloses a high-temperature hot repair platform for a substrate glass melting furnace, relating to the field of substrate glass production technology. The platform consists of a repair platform, a ladder, guardrails, and a repair door. The repair platform is constructed with square tubing welded into a stable frame and fitted with a grid plate, installed on one side of the furnace top. The ladder is made of high-strength metal, with hooks at the top that fit the platform's hanging holes and the bottom touching the ground. The guardrail is U-shaped and has a track. The repair door is a push-pull structure with rollers along the track on the edge, and is secured with a locking pin when closed. Workers can directly use the platform to move up and down and enter the repair area without needing to schedule a lifting platform, simplifying the repair process, improving efficiency, and ensuring production safety.

The application discloses a glass wool raw material added with a fluxing agent and a glass wool preparation method, and belongs to the technical field of glass wool preparation. The glass wool raw material of the application adopts quartz sand, feldspar, borax, soda ash, potassium nitrate, dolomite, calcite and recycled glass clinker as raw materials, innovatively constructs a soda ash+borax+potassium nitrate ternary composite fluxing and stabilizing system, and breaks through the limitation of traditional binary fluxing technology; meanwhile, a three-stage gradient melting, gradient centrifugal spinning and low-pressure constant-temperature solidification coupling preparation process is matched, the glass melting state is effectively optimized, the slag ball generation is greatly reduced, and the glass fiber is refined and homogenized. The application solves the technical problems of high energy consumption, high slag ball content, large fiber dispersion and poor product stability in the existing glass wool production, and has the advantages of simple preparation process, industrialization production and the like, and the prepared glass wool has excellent heat preservation, sound absorption, rebound and weather resistance, and has good application prospect and economic value.

The present invention relates to a method for controlling a cold top glass melting electric furnace. Said method comprises the execution of a feedback control loop of the thickness of a crust located on the surface of the melt bath, said feedback control loop being configured to determine a command for controlling the electric power of the furnace by taking into account the melting kinetics of the batch forming the crust.

The invention relates to a method for repairing, in a hot state, a region of a tank in a glass furnace, referred to as the “region to be repaired”, by means of a repair product (P), the method involving the following steps, at a temperature greater than 300° C.: a) defining a receiving space in the region to be repaired, referred to as the “region to be filled”, the region to be filled (10) having a bottom (12; 12′); b) coating the bottom, the coating time, from the start of the introduction of the repair product into the region to be filled to the time at which the bottom is completely covered with the repair product, lasting less than 14 minutes; c) filling the region to be filled with the repair product, the rate of increase (V) in the repair product in the region to be filled being, at any time during the filling step, greater than or equal to 3 mm / min.

This invention belongs to the field of glass melting furnace technology, specifically a hydrogen-burning glass melting furnace, including a tank furnace. A furnace roof is fixedly installed on the top of the tank furnace, and heating boxes are symmetrically arranged on both sides of the tank furnace for heating the external sides of the furnace. A feeding port is opened at one end of the tank furnace, and a heating box is located at the bottom of the furnace for heating the bottom. A slag-scraping assembly drives a flexible scraper to scrape and clean the furnace roof, removing solid particles adhering to its inner wall. Simultaneously, an adsorption assembly collects the solid particles scraped off by the slag-scraping assembly. Through the cooperation of the slag-scraping assembly and the adsorption assembly, the furnace roof can be cleaned in real time while the tank furnace is burning and melting solid batch materials to produce molten glass. Compared to manual cleaning during furnace shutdown, the furnace roof can be cleaned without stopping the furnace, which is more conducive to glass production operations.