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37results about How to "Change dispersion" patented technology

Preparation method of kaolin having high colloid index

The invention relates to the technical field of kaolin preparation, and particularly relates to a preparation method of kaolin having a high colloid index. The preparation method comprises the following steps: (1) pulping, and dispersing; (2) desanding; (3) blanching; (4) modifying with ammonia water: adding ammonia water of which the concentration is 10-29% in percentage by mass into the ore pulp concentrated material, and then thoroughly stirring for 15-25 minutes, wherein 0.1-0.35 kg of ammonia water is added into per ton of ore pulp concentrated material; and (5) washing and drying: circularly washing and dewatering the ore pulp concentrated material subjected to ammonia water modification in the step (4), and drying the washed and dewatered ore pulp concentrated material to obtain the kaolin having a high colloid index. According to the invention, the ammonia water is added into the ore pulp concentrated material to perform modification treatment, so that the hydrophilicity, dispersity and expandability of kaolin can be changed, thereby ensuring that the colloid index of the finally prepared kaolin is higher than 90ml/15g. Thus, the prepared kaolin is especially suitable for being used as a catalyst for catalytic cracking reaction in the petrochemical industry.
Owner:茂名市茂群高岭土有限公司

Optical fiber of stimulated Brillouin scattering effect enhancement type

The invention discloses an optical fiber of a stimulated Brillouin scattering effect enhancement type, and the optical fiber comprises a fiber core and a wrapping layer surrounding the fiber core. The radius a of the fiber core is from 1 [mu]m to 7 [mu]m, and the fiber core is doped with one of GeO2, P2O, and Al2O3. The wrapping layer is doped with a material F. The relation between the refractive index difference delta n between the fiber core and the wrapping layer and the radius a of the fiber meets the conditions: a*a*delta n is greater than zero and not greater than 0120 [mu]m[2]. The relation between the sound speed difference delta V1 between the fiber core and the wrapping layer and the radius a of the fiber meets the conditions: a*a*delta V1 is greater than zero and not greater than 225 [mu]m[2]*m/s, so as to excite and generate single optical mode and single sound mode constraint stably in the optical fiber at the same time. The fiber core and the wrapping layer are respectively doped with different materials, thereby obtaining the common excitation of an acousto-optic field. A single brillouin gain peak is formed in the optical fiber through coupling. The position of the gain peak of a gain spectrum of the optical fiber is higher in gain coefficient, and the full width at half maximum of a brillouin gain spectrum is narrower and is about 10 MHz. Moreover, the optical fiber also can improve an absolute value of a chromatic dispersion parameter while enhancing the stimulated Brillouin scattering effect, and effectively inhibits an four-wave mixing effect nearby a normally-used working band window 1.55 [mu]m.
Owner:HUAZHONG UNIV OF SCI & TECH

Space station environment control and life-support system controller, and control method

The invention relates to a space station environment control and life-support system controller, and a control method. The system controller comprises multiple redundantly arranged power supply unitsand multiple redundantly arranged environment control and life-support system units; the environment control and life-support system units are connected through an interaction channel; the environmentcontrol and life-support system unit comprises a processor module and a power conversion module; the processor module is connected to a sub-system management module, a data sending module, a state telemetry module, a reset circuit, a clock circuit, a data storage and a program storage; and the power conversion module respectively converts secondary direct-current voltage provided by the power supply units into working voltage required by the sub-system management module, the data sending module and the state telemetry module. The control method comprises the steps of: collecting environment monitoring data of each sub-system, and then, analyzing the collected environment monitoring data through the system controller. By means of the space station environment control and life-support system controller, and the control method in the invention, reliable living environment parameter real-time data can be provided for astronauts.
Owner:XIAN MICROELECTRONICS TECH INST

Device for preparing fine crystal powder based on electrostatic spraying, and using method thereof

The invention relates to a device for preparing fine crystal powder based on electrostatic spraying. The technical scheme is that the lower end of a hollow support rod (6) is connected to the upper end of a quartz crucible (12) through a variable diameter seal joint (11); the upper end of the hollow support rod (6) passes through a lifting hole and is connected with a lifting mechanism (1) through a flange (3); 4-8 heating elements (22) are evenly fixed at the inner wall of a heat-resisting protective layer (21); a water-cooling receiving copper plate (15) is arranged at the center near the lower part of a furnace body (8); an induction heating coil (13) is arranged above the water-cooling receiving copper plate (15); an insulated corundum protecting pipe (5) is arranged inside the hollow support rod (6); one end of a conductive electrode (2) is externally connected with the anode of a direct current high-voltage power supply (25) through a lead; and the other end penetrates outside from the insulated corundum protecting pipe (5) and contacts the bottom of the quartz crucible (12). The device has the characteristics that the device is little in investment, high in conductivity, easy to operate and rapid to condense, and can conveniently control the powder shape and the microstructure; and the prepared powder is narrow in particle size distribution, small in crystal particle, and high in purity.
Owner:湖北赛格瑞新能源科技有限公司

High-temperature integrated down-hole temperature and pressure measurement system

The invention discloses a high-temperature integrated down-hole temperature and pressure measurement system. According to the high-temperature integrated down-hole temperature and pressure measurement system, signals of a high-temperature high-precision temperature sensor and a pressure sensor are transmitted into an amplification conditioning unit, analog voltage signals are subjected to filtering, amplification and compensating under the temperature and pressure changing condition and then input to a central processing unit, after being subjected to digital conversion through the central processing unit, the analog voltage signals are input to a high-temperature memory unit to be recorded and memorized, and the high-temperature memory unit, a high-temperature measurement and control system composed of the temperature sensor and a power supply unit, a datum communication interface and a programming port jointly form a high-temperature integrated independent chip. According to the high-temperature integrated down-hole temperature and pressure measurement system, the conditions that a traditional test instrument is decentralized in circuit structure, low in integration level and intellectualization, poor in reliability and difficult to repair are thoroughly changed, and therefore high-temperature down-hole measurement is achieved. The high-temperature integrated down-hole temperature and pressure measurement system can complete accurate measurement, memory and processing of the temperature and pressure intensity of different depths by means of the method that the system directly enters an oil layer and descends into a well at a time, and the high-temperature integrated down-hole temperature and pressure measurement system has the advantages of being unique in inventive concept, reasonable in structural design, convenient to use, flexible in use, suitable for industrial popularization and the like.
Owner:陕西深泉沃达精密仪器科技有限公司

Multi-dimensional data acquisition application method and system

The invention discloses a multi-dimensional data acquisition application method and system, and belongs to the technical field of information. According to the method, the comprehensive sensor is usedfor collecting the distance information, the depth image information and the RGB image information, the collected information is integrated into multi-dimensional data to be analyzed and processed, and whether the distance between the user and the mobile terminal is within a preset range or not is judged; if the user is in the preset range, the method includes extracting depth image information and RGB image information, and obtaining gender, age and posture data of the user according to the information; judging whether a human-computer interaction behavior exists between the user and the mobile terminal or not according to the depth image information and the RGB image information; and if the user and the mobile terminal do not have the human-computer interaction behavior, enabling the mobile terminal to play pre-stored commodity information matched with the gender, age and posture data of the user. The comprehensive sensor is composed of a distance sensor, an RGB camera and a depth camera. The method and system are convenient to configure, can improve the consumption experience, and is suitable for commercial popularization and application.
Owner:深圳数拓科技有限公司

Metal powder information detection technology management system

InactiveCN107748770AChange dispersionKeep abreast of the production situationDatabase updatingParticle size analysisEngineeringInformation feedback
The invention relates to the technical field of metal powder detection and discloses a metal powder information detection technology management system. The system comprises an information collection unit, a central processing unit, an information collection unit, a data comparison module, an information feedback unit, an input module and an information storage unit, wherein the information collection unit comprises an apparent density measurement instrument, a tap density measurement instrument, a powder body shear instrument and a true density measurement instrument. Through the information collection unit, the apparent density measurement instrument, the tap density measurement instrument, the powder body shear instrument, the true density measurement instrument, a laser particle analyzer, a moisture measurement instrument, a resistivity measurement instrument, a contact angle measurement instrument, a strength measurement instrument, the central processing unit and the information collection unit, the problem of inconvenient management caused by dispersed detection information and incapability of obtaining production conditions timely in conventional metal powder production is solved; and the production conditions can be timely obtained only by collecting the detection information and sending the detection information to the central processing unit in a centralized manner.
Owner:JIANGSU LEKE METAL MATERIAL TECH

A Stimulated Brillouin Scattering Enhanced Optical Fiber

The invention discloses an optical fiber of a stimulated Brillouin scattering effect enhancement type, and the optical fiber comprises a fiber core and a wrapping layer surrounding the fiber core. The radius a of the fiber core is from 1 [mu]m to 7 [mu]m, and the fiber core is doped with one of GeO2, P2O, and Al2O3. The wrapping layer is doped with a material F. The relation between the refractive index difference delta n between the fiber core and the wrapping layer and the radius a of the fiber meets the conditions: a*a*delta n is greater than zero and not greater than 0120 [mu]m[2]. The relation between the sound speed difference delta V1 between the fiber core and the wrapping layer and the radius a of the fiber meets the conditions: a*a*delta V1 is greater than zero and not greater than 225 [mu]m[2]*m / s, so as to excite and generate single optical mode and single sound mode constraint stably in the optical fiber at the same time. The fiber core and the wrapping layer are respectively doped with different materials, thereby obtaining the common excitation of an acousto-optic field. A single brillouin gain peak is formed in the optical fiber through coupling. The position of the gain peak of a gain spectrum of the optical fiber is higher in gain coefficient, and the full width at half maximum of a brillouin gain spectrum is narrower and is about 10 MHz. Moreover, the optical fiber also can improve an absolute value of a chromatic dispersion parameter while enhancing the stimulated Brillouin scattering effect, and effectively inhibits an four-wave mixing effect nearby a normally-used working band window 1.55 [mu]m.
Owner:HUAZHONG UNIV OF SCI & TECH
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