419 results about "Fused quartz" patented technology

The invention discloses a wafer detection scattered light collection objective lens, and relates to the technical field of optical imaging. The scattered light collecting lens is applied to wafer defect detection, the scattered light collecting lens sequentially comprises a first lens group, a second lens group, a third lens group and a fourth lens group from an object plane to an image plane in the optical axis direction of the lens, twelve lenses and an aperture diaphragm, and the twelve lenses and the aperture diaphragm are coaxially arranged; the first lens group is a catadioptric lens group, has positive focal power, and is used for imaging an object plane to an intermediate image plane through two times of reflection. The numerical aperture of the acquisition objective lens provided by the invention is equal to 0.9, the field of view is equal to 2.6 mm, the acquisition objective lens has the characteristics of large field of view, large numerical aperture and small center shielding, the capability of detecting scattered light of defects can be greatly improved, chromatic aberration is corrected by adopting a refraction and reflection mode, and a wider laser bandwidth can be realized compared with a general refraction mode of combining CaF2 and fused quartz.

The invention relates to the technical field of ceramics, in particular to a preparation method of a heat-resistant ceramic marmite. The heat-resistant ceramic marmite is composed of a green body and a glaze surface, and the green body is prepared from, by weight, 30-35 parts of fused quartz, 8-10 parts of petalite, 9-11 parts of kaolin, 19-21 parts of washed illite clay, 5-7 parts of sepiolite, 5-6 parts of andalusite, 7-9 parts of coal gangue, 0.2-0.7 part of zinc spinel and 2-3 parts of talc; the glaze surface is prepared from the following raw materials in parts by weight: 18 to 20 parts of fused quartz, 14 to 16 parts of petalite, 12 to 14 parts of kaolin, 5 to 6 parts of calcium oxide, 1.5 to 2 parts of zinc oxide, 1 to 1.5 parts of strontium oxide, 8 to 10 parts of spodumene, 0.6 to 0.8 part of lanthanum oxide, 8 to 10 parts of ZrSiO4 coated Al2O3 and 1.2 to 1.8 parts of pigment. The prepared ceramic marmite has the advantages of matt appearance, higher thermal stability, low water absorption rate and excellent comprehensive performance, and is not easy to crack and wear.

The invention discloses a fused quartz plate welding machine with a clamping effect, and relates to the technical field of fused quartz plate welding, the fused quartz plate welding machine comprises a threaded sleeve plate, and a fillet pressing plate is arranged on one side of the threaded sleeve plate; according to the fused quartz plate welding machine with the clamping effect, the hollow air cushion is arranged to be a square rubber body which is internally provided with a hollow area and provided with filleted corners, and a hollow cylinder is fixedly connected to the inner wall of the hollow air cushion, and the hollow air cushion is arranged on one side of the filleted corner pressing plate to make elastic contact with a fused quartz plate; the pre-tightening force is adjusted to be proper force for clamping the fused quartz plate by compressing the reset spring, so that the surface of the fused quartz plate is prevented from being affected by the material of the quartz plate and being easily impressed or even damaged when the quartz plate is rigidly clamped; and the situation that when the fused quartz plate is directly clamped by the fillet pressing plate, the force is difficult to control, excessive clamping is likely to happen, and the fused quartz plate is damaged is prevented.

The invention discloses a long-life alumina crucible as well as a preparation method and application thereof. The raw material composition of the alumina crucible comprises pretreated quartz particles; the pretreated quartz particles are obtained through a pretreatment process; according to the pretreatment process, the surfaces of fused quartz particles are coated with a modifier through a granulation process, and the pretreatment process specifically comprises the steps that the fused quartz particles, the modifier and a binding agent are mixed, granulated and dried, and pretreated quartz particles are obtained. The fused quartz particle raw material is subjected to modification pretreatment, so that the crystallization behavior of fused quartz is reduced or inhibited, the stability of the fused quartz particles in the crucible firing and high-temperature service process is improved, and the binding property of the fused quartz particles and the fine powder component is enhanced, so that the mechanical properties such as breaking strength and fracture toughness of the alumina crucible are improved; therefore, the service life and the stability of the crucible are improved, and the performance of the alumina crucible can completely meet the requirement of the service life under extreme conditions in the fields of rare noble metal smelting and the like.

The invention discloses a fused quartz high-precision surface laser double-sided polishing method, and belongs to the technical field of optical element laser processing. In order to solve the problem of surface shape distortion of the fused quartz element under the existing laser polishing process, the method comprises the following steps: firstly, ultrasonically cleaning the fused quartz element and blow-drying the fused quartz element by using compressed air; the morphology distribution of the fused quartz after laser polishing is simulated through finite element simulation, and the scanning speed is optimized; polishing the target surface according to the process parameters and the processing path after the scanning speed is optimized; the internal temperature distribution of the fused quartz after laser polishing is obtained through finite element simulation, and the polishing power of elements with different thicknesses is optimized; the back face of the target face is polished through the optimized laser power; and after laser polishing, carrying out ultrasonic cleaning and drying again. The method is simple in process and low in cost, the surface shape quality can be remarkably improved, the roughness is reduced, the time cost consumed by a parameter cross experiment is avoided, and optimization of laser polishing parameters is efficiently achieved.

The invention belongs to the technical field of high-temperature and high-pressure free radical in-situ analysis, and provides a visual detection method for free radicals generated by hydrocarbon-water interface micro-droplets at high temperature and high pressure. The method comprises the following steps: preparation of a free radical fluorescence indicator aqueous solution, sample loading of a fused quartz capillary tube, visual simulation experiment and free radical fluorescence phenomenon analysis. On the basis of the temperature and pressure range of the actual stratum burying condition, the micro-droplet fluorescence phenomenon of the free radical fluorescence indicator water solution and the hydrocarbon liquid interface under the high-temperature and high-pressure conditions is observed through a visual fused quartz capillary thermal simulation experiment, and the fluorescence characteristics of a laser confocal microscope are used for detection. Comprehensively obtaining a method for in-situ online detection of generation of free radicals in the high-temperature and high-pressure process; the problem that micro-droplet free radicals cannot be directly detected under high-temperature and high-pressure conditions is solved.

The invention provides a visual detection method for interface water droplet induced electron generation in a high-temperature and high-pressure hydrocarbon-water system, and belongs to the technical field of in-situ analysis of electrons in mixed fluid. The detection method comprises the following steps: preparing a fused quartz capillary reaction cavity; loading a sample in a fused quartz capillary reaction cavity: sequentially inserting a thin capillary syringe filled with a silicomolybdic acid aqueous solution and a thin capillary syringe filled with a hydrocarbon liquid into the fused quartz capillary reaction cavity, and injecting the silicomolybdic acid aqueous solution and the hydrocarbon liquid; and carrying out visual detection on the water droplets. Through the visual fused quartz capillary thermal simulation experiment device, the color change of the water droplets at the interface of the silicomolybdic acid aqueous solution and the hydrocarbon fluid under the conditions of high temperature and high pressure is visually displayed, and the color characteristics of the water droplets are observed in real time by using a microscope, so that whether the water droplets induce electron generation or not is judged; the problem that electrons generated by water droplets cannot be directly observed and detected under high-temperature and high-pressure conditions is solved.

The invention discloses a method for manufacturing an aspheric fused quartz optical element, which comprises the following steps of: S1, carrying out ultra-precision grinding on the aspheric fused quartz optical element to ensure that the surface shape error and the surface roughness of the ground surface meet the requirements; s2, performing magneto-rheological polishing and shaping on the aspheric fused quartz optical element; s3, the surface shape precision of the aspheric fused quartz optical element is detected, if the detection result meets the requirement, the step S4 is executed, and if the detection result does not meet the requirement, the step S2 is executed again; s4, the aspheric fused quartz optical element is subjected to fairing polishing; and S5, detecting the front shape of the transmitted wavefront of the aspheric fused quartz optical element, filtering the intermediate frequency band, then performing power spectral density analysis, if the intermediate-high frequency error meets the requirement, completing the processing, and if the intermediate-high frequency error does not meet the requirement, returning to the step S4. The method has the advantages of high precision, high efficiency, low damage, low cost and the like.

The invention discloses fused quartz plate welding equipment with a positioning effect, and relates to the technical field of welding, and the fused quartz plate welding equipment comprises a composite mechanism. According to the fused quartz plate welding equipment with the positioning effect, through the design of the composite mechanism, the two fixing mechanisms are arranged and distributed on the two sides of the composite base, quartz plates are placed on the inner sides of the fixing mechanisms, and the effect of fixing the plates is achieved through the fixing mechanisms, so that the stability during welding is kept, deviation is prevented, and the welding precision is improved; the fixing mechanisms slide on the outer sides of the sliding rail columns, the two fixing mechanisms move towards one side of the welding machine, the mechanical butt joint effect is achieved, deviation caused by manual butt joint is avoided, the sliding frame body slides on the inner side of the composite frame body, the welding machine is driven to conduct transverse operation, and therefore the plate welding effect is achieved. When laser welding is carried out, dazzling light exists, the light is shielded through the protection mechanism, the working environment is optimized, and the vision of personnel is prevented from being affected.

The invention discloses a heating assembly for a fused quartz furnace, and belongs to the technical field of heating, the heating assembly comprises a furnace body, a fixed seat is arranged on the bottom side in the furnace body, the heating assembly also comprises two hydraulic push rods which are distributed at the bottom of the fixed seat in a circumferential array, and the bottoms of the hydraulic push rods are fixedly connected with the inner wall of the furnace body. According to the invention, the heating block and the heat conduction block are inserted and mounted along the limiting sliding groove, the use positions of the limiting sliding block, the heating block and the heat conduction block are limited through the limiting sliding groove, and the furnace cover can limit and fix the top of the heating block, so that the hydraulic push rod drives the fixed seat to move upwards, and the heat conduction block enters the heating block; the use height between the heating block and the heat conduction block is adjusted to meet the heating requirements of different crucible heights, so that the different heating requirements of the equipment in the use process are guaranteed, a heat source is effectively focused, energy loss is reduced, and the applicability and the energy efficiency level of the equipment are remarkably improved.

The invention belongs to the technical field of optical element processing, and particularly relates to a fused quartz optical element subsurface damage detection method based on intrinsic point defects. Comprising the following steps: selecting a laser type according to optical absorption characteristics of intrinsic point defects; setting a fluorescence signal acquisition wave band of the laser confocal microscope according to the intrinsic point defect emission spectrum; an ultraviolet laser is used for irradiating the fused quartz optical element, intrinsic point defects in subsurface damage are excited, and a fluorescence signal is generated; the laser confocal microscope obtains a sub-surface damage fluorescence tomography image by using a fluorescence signal pseudo colorization function, and the image is preprocessed to realize three-dimensional reconstruction of the sub-surface damage; and extracting the depth of the subsurface damage according to the position information of the bottommost pixel point of the three-dimensional reconstruction model. According to the method disclosed by the invention, no other fluorescent marker is used, so that additional pollution of the fluorescent marker to the element is fundamentally avoided, the application of the fluorescent microscopy to pollution-free and high-efficiency detection of the subsurface damage of the fused quartz optical element with large aperture and high cost becomes possible, and the precision of depth detection is improved.

The invention discloses a high-deformability silicon-based ceramic core for a nickel-based single crystal blade and a preparation method of the high-deformability silicon-based ceramic core, and the high-deformability silicon-based ceramic core comprises the following substances in percentage by mass: 20-65 wt% of core-shell structure quartz glass powder, 30-75 wt% of fused quartz glass powder, 3-35 wt% of a mineralizer and 1-10 wt% of a special additive. The preparation method comprises the following steps: preparing core-shell structure quartz glass powder with various particle sizes, a mineralizing agent and a special additive; uniformly mixing the substances to obtain silicon-based ceramic powder, and uniformly mixing the silicon-based ceramic powder with a plasticizer to obtain silicon-based ceramic core slurry; filling and pressing to obtain a silicon-based ceramic core blank, and roasting to obtain the high-deformability silicon-based ceramic core. According to the method, the silicon-based ceramic core has the characteristics of excellent shrinkage yielding, strength yielding, creep yielding and the like in the solidification process of the high-temperature alloy liquid, and the problem that recrystallization is generated in an inner cavity of the nickel-based single-crystal high-temperature alloy blade is effectively solved.

The invention discloses waste stripping equipment during quartz round hole forming, and relates to the technical field of laser drilling, the waste stripping equipment comprises a laser processing table, a laser drilling head is arranged on the laser processing table, and a waste stripping assembly is arranged on the laser processing table. Through operation of the waste stripping assembly, when laser finishes drilling a single round hole, hole core waste is immediately adsorbed through negative pressure and is vertically downwards separated from the round hole, the purpose of immediately stripping the waste is achieved, retention of the hole core waste in the round hole is avoided, and it is not needed to wait for laser drilling of all the round holes to be completed; the hole core waste of a single round hole is rapidly stripped in a high-temperature state, molten quartz left on the hole wall of the round hole and the hole core waste cannot be cooled and solidified, and secondary adhesion of the round hole and the hole core waste is avoided.

The invention provides a high-purity fused quartz sand magnetic separation device, which belongs to the technical field of fused quartz sand magnetic separation equipment.The high-purity fused quartz sand magnetic separation device comprises a magnetic system bearing frame, a magnetic plate, a first transmission roller group and a first conveyor belt, a second conveying belt for horizontal conveying is arranged on the second transmission roller group; a plurality of groups of brush strips and scrapers are arranged on the second conveying belt; along with the conveying of the second conveying belt, the scraping plate can be in contact with the first conveying belt at the minimum position of the gap between the first conveying belt and the second conveying belt, and at the moment, the scraping plate can pull away the ferromagnetic materials retained at the edge of the magnetic plate in the conveying direction of the first conveying belt, so that the situation that the ferromagnetic materials are retained to cause abrasion to the first conveying belt is avoided; the brush strips on the second conveying belt make contact with the first conveying belt, the brush strips play a role in disturbing the materials on the first conveying belt, and the washing effect on the non-magnetic materials mingled in the ferromagnetic materials is improved.

The invention relates to a hemispherical resonator and hemispherical gyroscope parameter and defect identification system and method, and belongs to the technical field of hemispherical resonator gyroscopes. According to the invention, automatic identification of damping non-uniformity, rigidity non-uniformity and 1-3-order quality defect parameters is respectively carried out on the fused quartz hemispherical resonator before and after film coating and the gyroscope header after base assembly, so that the full-flow coverage test of the hemispherical resonator gyroscope is realized; various parameters are identified in the whole process from harmonic oscillator machining forming to the gauge outfit state, the testing precision, the system reusability, the operation convenience and consistency are greatly improved, and the production efficiency is improved.

The invention discloses a femtosecond laser direct-writing Type X structure-based geometric phase fork-shaped grating, a preparation method and application of the femtosecond laser direct-writing Type X structure-based geometric phase fork-shaped grating in vortex light, and belongs to the technical field of laser processing, and the femtosecond laser direct-writing Type X structure-based geometric phase fork-shaped grating comprises design and parameter calculation of a geometric phase fork-shaped grating device, determination of a processing parameter window of a Type X structure and the femtosecond laser direct-writing fork-shaped grating. According to the invention, femtosecond laser is utilized to induce and generate an anisotropic nanopore structure with ultra-high transmittance higher than 97% in fused quartz and other transparent materials, namely a Type X structure, the structure has a birefringence characteristic, and the slow axis angle of the structure is always perpendicular to the laser polarization direction, so that the slow axis angle can be continuously adjusted by adjusting laser polarization. The Type X structure serves as a metasurface unit of the geometric phase fork-shaped grating, geometric phase regulation and control are achieved by controlling slow axis orientation of the Type X structure, and therefore generation and regulation and control of vortex light are achieved. The method is high in efficiency and simple in process.

The invention relates to a telemetering type laser-induced breakdown spectroscopy detection system which is characterized in that a light outlet of a laser is aligned with the position of a light guide arm base, a laser beam expanding device is mounted in the light guide arm base, and laser is expanded into parallel light through the laser beam expanding device and then sequentially passes through a first laser reflector, a second laser reflector, a third laser reflector and a dichroscope; and the fourth aluminum film reflecting mirror and the fused quartz glass are converged on the sample to be detected and are excited to generate plasmas. According to the principle of light path reversibility, the spectrum generated by the plasma can be changed into parallel light through the fused quartz lens, and the parallel light enters the optical fiber coupling module through the fourth aluminum film reflector and the dichroscope and is transmitted to the spectrum detector through the optical fiber. According to the invention, the high-temperature molten sample to be detected can be detected, the free adjustment of the light path in the spatial position is realized, and the problems of high temperature of the straight surface of the detection probe, difficulty in field installation and the like are solved.

The invention discloses a device and method for testing performance degradation of a deep ultraviolet fused quartz material, and the method comprises the steps: employing a continuous laser beam with the wavelength of 213nm as a detection light beam, and simultaneously monitoring the transmittance change of the detection light beam after the detection light beam passes through a deep ultraviolet laser irradiation region of the deep ultraviolet fused quartz material and the instantaneous change of the light intensity of a light beam central region; the color center defect concentration change of the deep ultraviolet fused quartz material caused by deep ultraviolet laser irradiation and the absorption change of the deep ultraviolet laser irradiation wavelength are obtained, and the transmittance change of the irradiation laser beam transmitting the deep ultraviolet fused quartz material is monitored at the same time; the performance degradation data of the deep ultraviolet fused quartz material under the irradiation of the deep ultraviolet laser and the contribution of the color center defect generated by the irradiation of the deep ultraviolet laser to the performance degradation are obtained. According to the invention, the contribution of color center defects to performance degradation can be distinguished, the performance recovery mechanism of hydrogen can be measured, and the measurement sensitivity of thermal lens signals can be effectively improved.

The invention discloses a laser processing device for a fused quartz micro-filter plate, which comprises a main frame (1), and a first moving assembly (4) for moving a workbench (2) and a second moving assembly (3) for moving a laser transmitter (12) are arranged on the main frame (1); a dust removal assembly (5) is arranged on the workbench (2); a circular plate (6) is arranged at the moving end of the second moving assembly (3), an annularly-arranged rotating assembly (7) is arranged at the lower end of the circular plate (6), and the rotating end of the rotating assembly (7) is connected with a connecting rod piece (8). The protective part is arranged around the laser transmitter, dust splashing is prevented, the influence of dust on crack bridging repair is reduced, and the repair quality is guaranteed.

A method for manufacturing a fused metal sight window that melts the metal of the frame around the window, instead of the traditional method of melting the window into the frame. Since most of the superior optical transparent materials (such as fused silica, sapphire, YAG, ALON, diamond, fused quartz and magnesium fluoride) have a melting point higher than most metals, it was not previously possible to create fused metal sight windows with these materials. By melting the frame onto the window, many new combinations of metals and optical materials may be used while retaining the strength of the sight window that results from fusing the metal and the window.

The invention belongs to the technical field of petroleum and natural gas mineral geochemical experiment research, and discloses a research method for a mechanism of extracting elemental gold in hydrothermal fluid from crude oil. In-situ visualization experiments are carried out in a transparent fused quartz capillary tube, and analysis is carried out in combination with a scanning electron microscope, an energy dispersion X-ray spectrum and a transmission electron microscope, so that continuous evolution of water droplets near an interface of oil and a solution containing HAuCl4 at a high temperature is successfully proved. According to the method disclosed by the invention, hydration electrons released in a conversion process from OH <-> to OH < * > in the water droplets are extracted, the hydration electrons and H2O2 formed in the droplets have a synergistic effect, Au3 < + > is promoted to be reduced to form natural gold atoms, the atoms are gathered into nano-scale and micron-scale gold particles in a droplet coalescence process, and a clear and reasonable mechanism is provided for formation of elemental gold in crude oil extraction hydrothermal fluid.

The invention discloses a convenient-to-position cutting machine for fused quartz plate processing, and relates to the technical field of cutting, and the convenient-to-position cutting machine comprises a composite mechanism. According to the cutting machine convenient to position and used for fused quartz plate machining, through the design of a composite mechanism, a quartz plate is placed on the inner side of the movable fixing assembly, and the quartz plate is fixed through the movable fixing assembly, so that the stability during cutting is kept, and the situation that the cutting effect is affected due to deviation during cutting is avoided; during operation, the movable fixing assembly slides in a groove in the top of the composite base and is in butt joint with the saw blade, the saw blade is controlled by the first motor to rotate, the cutting effect on a quartz plate is achieved, the sliding cross beam slides on the two sides of the composite base, the cutting position is convenient to move and adjust, and the sliding frame body slides on the sliding cross beam; and the saw blade is controlled to ascend and descend through the lifting table, so that the saw blade is conveniently attached to the surface of the quartz plate, different operation requirements are met, and normal operation of equipment is kept.

The invention relates to the technical field of fused quartz element manufacturing equipment, in particular to a fused quartz element transfer device and an automatic production line, the fused quartz element transfer device comprises a transfer trolley, a hoisting frame and a hanging basket assembly, and the hoisting frame comprises a first support, a second support and a connecting cross beam; the first support and the second support are arranged in a spaced mode in the first direction so that a containing space can be formed between the first support and the second support, the connecting cross beam is arranged in the containing space, and the connecting cross beam is fixedly connected with the first support and the second support so that the containing space can be divided into a part containing space and a bearing space which are sequentially arranged in the gravity direction. The transfer trolley is arranged in the bearing space, the hanging basket assembly is arranged in the part containing space, and the hoisting frame is detachably connected with the transfer trolley and the hanging basket assembly. According to the fused quartz element transfer device and the automatic production line, the structure is simplified, the stability is improved, the maintainability, the replaceability and the utilization rate of the transfer trolley are improved, and the compatibility is improved.

The invention relates to the field of hemispherical resonator gyroscope manufacturing, in particular to a high-uniformity metallization coating method and device for a fused quartz hemispherical resonator. The method comprises the following steps of: fixing a special tool of the hemispherical harmonic oscillator and the hemispherical harmonic oscillator; the distance between the surface of the sputtering target and the surface of the special tool, the relative distance between the center of the sputtering target and the center of the special tool and the included angle between the hemispherical harmonic oscillator and the horizontal plane of the special tool are adjusted; carrying out surface cleaning on the hemispherical harmonic oscillator, and then carrying out film plating; the film uniformity distribution condition is obtained by sampling an accompanying plating sheet and measuring a film layer step.

The invention discloses fused quartz plate cutting equipment with a dustproof effect, and relates to the technical field of quartz plate machining, the fused quartz plate cutting equipment comprises a bottom plate, and supporting frames are fixedly mounted on the two sides of the top of the bottom plate; guide bases are movably mounted at the two ends of the outer surface of the cutting assembly; and the material guiding and dust collecting part is used for guiding and conveying the quartz plate. According to the fused quartz plate cutting equipment with the dustproof effect, before a quartz plate is cut, a worker needs to guide and convey the quartz plate, at the moment, the quartz plate makes contact with a guide roller, and when the worker pushes the quartz plate to one side of a dust collection groove set, the quartz plate slides and displaces and drives the guide roller to drive a rotating rod to rotate in a positioning plate; the quartz plates are pushed to the position above the dust collection groove set, the effects of reducing friction force generated when the quartz plates are pushed and saving the workload of workers are achieved, and guide rollers are arranged at the two ends of the dust collection groove set so that discharging can be conveniently conducted after the quartz plates are machined.

The invention discloses low-expansion cordierite ceramic prepared from chlorite and a preparation method of the low-expansion cordierite ceramic. The low-expansion cordierite ceramic is prepared from the following chemical components in percentage by mass: 47.3 to 48.8 percent of SiO2, 37.6 to 39.1 percent of Al2O3, 0.5 to 0.6 percent of CaO, 12.35 to 13.4 percent of MgO, 0.05 to 0.1 percent of Fe2O3, 0.01 to 0.02 percent of K2O, 0.003 to 0.009 percent of Na2O and 0.16 to 0.21 percent of TiO2. The preparation method comprises the following steps: 1, taking chlorite as a raw material, and adding kaolin and aluminum oxide to prepare a cordierite precursor; step 2, adding fused quartz into the cordierite precursor prepared in the step 1 to prepare mixed powder; and 3, molding the mixed powder obtained in the step 2, and firing to obtain the low-expansion cordierite ceramic.

The invention relates to the technical field of melting preparation of quartz materials, in particular to a technological method for melting a quartz tube through cooperation of microwaves and plasmas. According to the technological method for melting the quartz tube through the cooperation of the microwaves and the plasmas, through the chemical cooperation mechanism of microwave molecule activation, plasma cooperation melting and heat preservation annealing, the problems that traditional electric heating is high in energy consumption, many in metal residues and uneven in thermal field are effectively solved, the technology is stable, and the technological method is suitable for mass production of high-purity quartz tubes.

The invention discloses a preparation method of high-purity fused quartz powder, and the preparation method specifically comprises the following steps: S1, crushing; s2, fully washing the quartz powder with water, and then removing impurities; s3, feeding the crushed particles subjected to impurity removal into a pickling tank for pickling; s4, dissolving the crude product in two times of alkaline solution, carrying out alkali washing treatment, and carrying out ultrasonic cleaning after the treatment is completed; s5, the cleaned raw materials are fed into a heating furnace to be subjected to high-temperature heat treatment; s6, magnetic separation is repeated; and S7, further crushing into fused quartz sand of which the particle size is less than 2mm by adopting an impact crusher. According to the preparation method of the high-purity fused quartz powder, circulating pickling is adopted, the optimal pickling condition acid concentration, acid dosage, pickling time, pickling temperature and the like are selected, metal impurities are effectively removed, and the purification effect is good; repeated magnetic separation is carried out under high and low field intensities, the magnetic separation effect is good, magnetic impurities are preliminarily and efficiently removed, and the purity of the whole manufactured product is high.

The invention belongs to the technical field of water microdroplet manufacturing, and provides a preparation method of water microdroplets in a hydrocarbon-water system. The method comprises the following steps: preparing a quartz capillary reaction tube; preparing a microdroplet observation end and a sample injection end; sample injection: respectively inserting thin capillary syringes filled with water and hydrocarbon liquid into the quartz capillary reaction tubes, and injecting the water and the hydrocarbon liquid; fixing the quartz capillary reaction tube; preparing liquid drops, namely adjusting the temperature and the pressure in the quartz capillary reaction tube by using a cold and hot table and a constant-pressure liquid pump. The fused quartz capillary is utilized to quickly prepare the water microdroplets in a hydrocarbon-water system under high-temperature and high-pressure conditions, so that the defects that a traditional emulsification method depends on a large number of surfactants to introduce impurities and is unstable at high temperature and high pressure, microfluidic technical equipment is complex, the cost is high, the microdroplets are easy to damage at high temperature and high pressure, the preparation efficiency is low and the like are overcome; and a new way is opened up for preparing the water microdroplets under high-temperature and high-pressure conditions.

The invention discloses a large-size few-bubble gas-fused quartz glass ingot qualification detection device and detection method.The detection device comprises a box body, a quartz inlet and a quartz outlet are formed in the front end and the rear end of the box body respectively, a conveying belt is arranged in an inner cavity of the box body, and a first lifting component and a second lifting component are sequentially arranged on the upper portion of the box body in the front-back direction; the lower portion of the first lifting component is connected with a sweeping component, the sweeping component comprises a sweeping motor and a movable sealing shaft sleeve connected with a vacuum suction pipe, the output end of the sweeping motor penetrates through the movable sealing shaft sleeve to be connected with a sweeping cylinder communicated with the vacuum suction pipe, and the lower portion of the second lifting component is connected with a detection component. The detection part comprises a detection motor and a turntable connected with the output end of the detection motor, the turntable is connected with a plurality of vertical plates, and the lower ends of the vertical plates are connected with detection heads. According to the invention, the quartz glass ingot can be swept in all directions, the quartz glass ingot can be detected in all directions, the phenomenon of missing detection is prevented, and the accuracy of the detection result is ensured.